:root {
  /* Colors */
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);
  --color-select-caret: rgba(19, 52, 59, 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: rgba(31, 33, 33, 1);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: rgba(245, 245, 245, 1);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-primary: rgba(50, 184, 198, 1);
    --color-primary-hover: rgba(45, 166, 178, 1);
    --color-primary-active: rgba(41, 150, 161, 1);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-secondary-hover: rgba(119, 124, 124, 0.25);
    --color-secondary-active: rgba(119, 124, 124, 0.3);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-error: rgba(255, 84, 89, 1);
    --color-success: rgba(50, 184, 198, 1);
    --color-warning: rgba(230, 129, 97, 1);
    --color-info: rgba(167, 169, 169, 1);
    --color-focus-ring: rgba(50, 184, 198, 0.4);
    --color-btn-primary-text: rgba(19, 52, 59, 1);
    --color-card-border: rgba(119, 124, 124, 0.2);
    --color-card-border-inner: rgba(119, 124, 124, 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(119, 124, 124, 0.2);
    --color-border-secondary: rgba(119, 124, 124, 0.2);
    --color-select-caret: rgba(245, 245, 245, 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: 50, 184, 198;
    --color-error-rgb: 255, 84, 89;
    --color-warning-rgb: 230, 129, 97;
    --color-info-rgb: 167, 169, 169;
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  --color-background: rgba(31, 33, 33, 1);
  --color-surface: rgba(38, 40, 40, 1);
  --color-text: rgba(245, 245, 245, 1);
  --color-text-secondary: rgba(167, 169, 169, 0.7);
  --color-primary: rgba(50, 184, 198, 1);
  --color-primary-hover: rgba(45, 166, 178, 1);
  --color-primary-active: rgba(41, 150, 161, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-secondary-hover: rgba(119, 124, 124, 0.25);
  --color-secondary-active: rgba(119, 124, 124, 0.3);
  --color-border: rgba(119, 124, 124, 0.3);
  --color-error: rgba(255, 84, 89, 1);
  --color-success: rgba(50, 184, 198, 1);
  --color-warning: rgba(230, 129, 97, 1);
  --color-info: rgba(167, 169, 169, 1);
  --color-focus-ring: rgba(50, 184, 198, 0.4);
  --color-btn-primary-text: rgba(19, 52, 59, 1);
  --color-card-border: rgba(119, 124, 124, 0.15);
  --color-card-border-inner: rgba(119, 124, 124, 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(119, 124, 124, 0.2);
  --color-select-caret: rgba(245, 245, 245, 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: 50, 184, 198;
  --color-error-rgb: 255, 84, 89;
  --color-warning-rgb: 230, 129, 97;
  --color-info-rgb: 167, 169, 169;
}

[data-color-scheme="light"] {
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--primary:active {
  background: var(--color-primary-active);
}

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-text);
}

.btn--secondary:hover {
  background: var(--color-secondary-hover);
}

.btn--secondary:active {
  background: var(--color-secondary-active);
}

.btn--accent {
  background: rgba(139, 92, 246, 0.2);
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

.btn--accent:hover {
  background: rgba(139, 92, 246, 0.3);
  border-color: rgba(139, 92, 246, 0.5);
}

.btn--accent:active {
  background: rgba(139, 92, 246, 0.15);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-secondary);
}

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://www.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* Custom styles for WiFi DensePose application */

/* Base layout and containers */
body {
  background-color: var(--color-background);
  color: var(--color-text);
  overflow-x: hidden;
}

.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: var(--space-16);
}

.header {
  text-align: center;
  padding: var(--space-32) 0;
}

.subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin-top: var(--space-8);
}

/* Navigation tabs */
.nav-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-24);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  padding: var(--space-12) var(--space-16);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  white-space: nowrap;
  position: relative;
}

.nav-tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.nav-tab:hover {
  color: var(--color-text);
}

.nav-tab.active {
  color: var(--color-primary);
}

.nav-tab.active::after {
  transform: scaleX(1);
}

/* Tab content */
.tab-content {
  display: none;
  animation: fadeIn var(--duration-normal) var(--ease-standard);
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Dashboard styles */
.hero-section {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1.6;
  margin: var(--space-16) auto var(--space-32);
  max-width: 800px;
}

.key-benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-20);
  margin: var(--space-32) 0;
}

.benefit-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-card-border);
  transition: transform var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-12);
}

.benefit-card h3 {
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-semibold);
}

.benefit-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  margin-bottom: 0;
}

.system-stats {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  margin: var(--space-32) 0;
  gap: var(--space-16);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-16);
}

.stat-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Hardware tab styles */
.hardware-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
}

@media (max-width: 768px) {
  .hardware-grid {
    grid-template-columns: 1fr;
  }
}

.antenna-array {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-16);
}

.antenna-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: var(--space-16);
  margin-bottom: var(--space-16);
}

.antenna {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: pointer;
}

.antenna::before {
  content: attr(data-type);
  font-size: var(--font-size-sm);
  color: var(--color-surface);
  font-weight: var(--font-weight-medium);
}

.antenna.tx {
  background-color: rgba(33, 128, 141, 0.8);
}

.antenna.rx {
  background-color: rgba(168, 75, 47, 0.8);
}

.antenna.active::after {
  content: '';
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid currentColor;
  animation: pulse 2s infinite;
}

.antenna.tx.active::after {
  color: rgba(33, 128, 141, 0.4);
}

.antenna.rx.active::after {
  color: rgba(168, 75, 47, 0.4);
}

@keyframes pulse {
  0% {
    transform: scale(0.95);
    opacity: 1;
  }
  70% {
    transform: scale(1.1);
    opacity: 0.3;
  }
  100% {
    transform: scale(0.95);
    opacity: 1;
  }
}

.antenna-legend {
  display: flex;
  justify-content: center;
  gap: var(--space-20);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.legend-color {
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

.legend-color.tx {
  background-color: rgba(33, 128, 141, 0.8);
}

.legend-color.rx {
  background-color: rgba(168, 75, 47, 0.8);
}

.config-section {
  margin-top: var(--space-16);
}

.config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-24);
}

.config-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-16);
  border: 1px solid var(--color-card-border);
}

.config-item label {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.config-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

.csi-data {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid var(--color-card-border);
}

.csi-display {
  margin-top: var(--space-12);
}

.csi-row {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-8);
}

.csi-bar {
  flex: 1;
  height: 12px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.csi-fill {
  height: 100%;
  transition: width 0.5s var(--ease-standard);
}

.csi-fill.amplitude {
  background: linear-gradient(90deg, #1FB8CD, #32B8C6);
}

.csi-fill.phase {
  background: linear-gradient(90deg, #FF9A3D, #E65125);
}

.csi-value {
  width: 40px;
  text-align: right;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

/* Demo tab styles */
.demo-controls {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  margin-bottom: var(--space-24);
}

.demo-status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* Status indicator dot */
.status-indicator {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #555;
}

.status-indicator.active {
  background: #00cc88;
  box-shadow: 0 0 6px #00cc88;
}

.status-indicator.sim {
  background: #ffa500;
  box-shadow: 0 0 6px #ffa500;
  animation: pulse 1.5s infinite;
}

.status-indicator.connecting {
  background: #f0ad4e;
  animation: pulse 1s infinite;
}

.status-indicator.error {
  background: #ff3c3c;
}

/* Live Demo data-source banner */
.demo-source-banner {
  display: block;
  width: 100%;
  padding: 10px 16px;
  margin-bottom: 12px;
  border-radius: 6px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-sizing: border-box;
}

.demo-source-live {
  background: rgba(0, 204, 136, 0.15);
  border: 1px solid #00cc88;
  color: #00cc88;
}

.demo-source-sim {
  background: rgba(255, 165, 0, 0.15);
  border: 1px solid #ffa500;
  color: #ffa500;
}

.demo-source-reconnecting {
  background: rgba(255, 180, 0, 0.12);
  border: 1px solid #f0ad4e;
  color: #f0ad4e;
  animation: pulse 1.5s infinite;
}

.demo-source-offline {
  background: rgba(255, 60, 60, 0.12);
  border: 1px solid #ff3c3c;
  color: #ff3c3c;
}

.demo-source-unknown {
  background: rgba(128, 128, 128, 0.12);
  border: 1px solid #888;
  color: #888;
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
}

@media (max-width: 768px) {
  .demo-grid {
    grid-template-columns: 1fr;
  }
}

.signal-panel, .pose-panel {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid var(--color-card-border);
}

.signal-display, .pose-display {
  background-color: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  margin: var(--space-12) 0;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

canvas {
  max-width: 100%;
}

.signal-metrics, .detection-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
}

.metric, .info-item {
  flex: 1;
  min-width: 120px;
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.metric span:last-child, .info-item span:last-child {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  font-family: var(--font-family-mono);
}

/* Architecture tab styles */
.architecture-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-24);
}

.architecture-image {
  max-width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-md);
}

.flow-steps {
  display: flex;
  justify-content: space-between;
  width: 100%;
  flex-wrap: wrap;
  gap: var(--space-16);
}

.step-card {
  flex: 1;
  min-width: 180px;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid var(--color-card-border);
  position: relative;
  transition: transform var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
  cursor: pointer;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  color: var(--color-surface);
  border-radius: 50%;
  font-weight: var(--font-weight-bold);
  position: absolute;
  top: -16px;
  left: var(--space-16);
}

.step-card h3 {
  margin-top: var(--space-16);
  margin-bottom: var(--space-8);
}

.step-card p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* Performance tab styles */
.performance-chart {
  text-align: center;
  margin-bottom: var(--space-24);
}

.chart-image {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.performance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-24);
}

.performance-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid var(--color-card-border);
}

.metric-list {
  margin-top: var(--space-16);
}

.metric-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding: var(--space-8);
  border-radius: var(--radius-md);
  background-color: rgba(0, 0, 0, 0.05);
}

.metric-value {
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-mono);
}

.metric-value.success {
  color: var(--color-success);
}

.limitations-section {
  grid-column: 1 / -1;
  margin-top: var(--space-16);
}

.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  margin-top: var(--space-16);
}

@media (max-width: 768px) {
  .pros-cons {
    grid-template-columns: 1fr;
  }
}

.pros h4, .cons h4 {
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.pros ul, .cons ul {
  padding-left: var(--space-20);
}

.pros li, .cons li {
  margin-bottom: var(--space-8);
  color: var(--color-text-secondary);
}

/* Applications tab styles */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-24);
  margin-bottom: var(--space-32);
}

.app-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  border: 1px solid var(--color-card-border);
  transition: transform var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
  height: 100%;
}

.app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.app-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-12);
}

.app-card h3 {
  margin-bottom: var(--space-12);
}

.app-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
}

.app-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.feature-tag {
  background-color: var(--color-secondary);
  color: var(--color-text);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.implementation-note {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  border: 1px solid var(--color-card-border);
  margin-top: var(--space-32);
}

.implementation-note h3 {
  margin-bottom: var(--space-12);
}

.implementation-note p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
/* Additional styles for modular UI components */

/* Header info bar */
.header-info {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  margin-top: var(--space-16);
  font-size: var(--font-size-sm);
}

.api-version,
.api-environment,
.overall-health {
  padding: var(--space-4) var(--space-12);
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  font-weight: var(--font-weight-medium);
}

.api-environment.env-development {
  background: rgba(var(--color-info-rgb), 0.1);
  color: var(--color-info);
}

.api-environment.env-production {
  background: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
}

.overall-health.status-healthy {
  background: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
}

.overall-health.status-degraded {
  background: rgba(var(--color-warning-rgb), 0.1);
  color: var(--color-warning);
}

.overall-health.status-unhealthy {
  background: rgba(var(--color-error-rgb), 0.1);
  color: var(--color-error);
}

/* Dashboard panels */
.live-status-panel,
.system-metrics-panel,
.features-panel,
.live-stats-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  margin-bottom: var(--space-24);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.component-status {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
}

.component-status.status-healthy {
  border-color: var(--color-success);
  background: rgba(var(--color-success-rgb), 0.05);
}

.component-status.status-degraded {
  border-color: var(--color-warning);
  background: rgba(var(--color-warning-rgb), 0.05);
}

.component-status.status-warning {
  border-color: #ffa500;
  background: rgba(255, 165, 0, 0.08);
}

.component-status.status-warning .status-text {
  color: #ffa500;
}

.component-status.status-unhealthy {
  border-color: var(--color-error);
  background: rgba(var(--color-error-rgb), 0.05);
}

.component-name {
  font-weight: var(--font-weight-semibold);
}

.status-text {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
}

.status-message {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* Metrics display */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.progress-bar {
  height: 8px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  transition: width 0.3s ease;
}

.progress-fill.normal {
  background: var(--color-success);
}

.progress-fill.warning {
  background: var(--color-warning);
}

.progress-fill.critical {
  background: var(--color-error);
}

/* Features status */
.features-status {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-12);
  margin-top: var(--space-16);
}

.feature-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
}

.feature-item.enabled {
  background: rgba(var(--color-success-rgb), 0.05);
  border-color: var(--color-success);
}

.feature-item.disabled {
  opacity: 0.6;
}

.feature-status {
  font-weight: var(--font-weight-semibold);
}

/* Live statistics */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-16);
  margin-top: var(--space-16);
}

.stat-item {
  text-align: center;
}

.stat-item .stat-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.person-count,
.avg-confidence,
.detection-count {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

/* Zones display */
.zones-panel {
  margin-top: var(--space-24);
}

.zones-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-12);
}

.zone-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) var(--space-12);
  background: var(--color-secondary);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
}

.zone-name {
  font-weight: var(--font-weight-medium);
}

.zone-count {
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-8);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
}

/* Error container */
.error-container {
  background: rgba(var(--color-error-rgb), 0.1);
  border: 1px solid var(--color-error);
  color: var(--color-error);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-16);
}

/* Global error toast */
.error-toast {
  position: fixed;
  bottom: var(--space-24);
  right: var(--space-24);
  background: var(--color-error);
  color: white;
  padding: var(--space-12) var(--space-20);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  transform: translateY(100%);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.error-toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Backend status toast */
.backend-status-toast {
  position: fixed;
  top: var(--space-24);
  right: var(--space-24);
  padding: var(--space-12) var(--space-20);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  transform: translateY(-100%);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1001;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.backend-status-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.backend-status-toast.success {
  background: var(--color-success);
  color: white;
}

.backend-status-toast.warning {
  background: var(--color-warning);
  color: white;
}

.backend-status-toast.error {
  background: var(--color-error);
  color: white;
}

/* Tab badge */
.tab-badge {
  display: inline-block;
  margin-left: var(--space-8);
  padding: var(--space-2) var(--space-6);
  background: var(--color-error);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

/* Help text */
.help-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--space-16);
}

/* Array status */
.array-status {
  display: flex;
  gap: var(--space-16);
  margin-top: var(--space-16);
  padding: var(--space-12);
  background: var(--color-secondary);
  border-radius: var(--radius-base);
}

.array-info {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.info-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.info-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

/* ===== Sensing Tab Styles ===== */

.sensing-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-16);
  min-height: 550px;
}

@media (max-width: 900px) {
  .sensing-layout {
    grid-template-columns: 1fr;
  }
}

.sensing-viewport {
  background: #0a0a12;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  overflow: hidden;
  min-height: 500px;
  position: relative;
}

.sensing-viewport canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.sensing-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

/* Side panel */
.sensing-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  overflow-y: auto;
  max-height: 600px;
}

.sensing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: var(--space-12);
}

.sensing-card-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* Connection status */
.sensing-connection {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
}

.sensing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-info);
  flex-shrink: 0;
}

.sensing-dot.connected {
  background: #00cc88;
  box-shadow: 0 0 6px #00cc88;
}

.sensing-dot.simulated {
  background: var(--color-warning);
  box-shadow: 0 0 6px var(--color-warning);
}

.sensing-dot.connecting {
  background: var(--color-info);
  animation: pulse 1.5s infinite;
}

.sensing-dot.disconnected {
  background: var(--color-error);
}

.sensing-dot.reconnecting {
  background: var(--color-warning);
  animation: pulse 1.5s infinite;
}

.sensing-source {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-family: var(--font-family-mono);
}

.sensing-about-text {
  margin: 0;
  font-size: 12px;
  color: #aaa;
  line-height: 1.5;
}

.sensing-about-text strong {
  color: #ccc;
}

/* Data-source status banner (live / reconnecting / simulated) */
.sensing-source-banner {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  margin-bottom: var(--space-12);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family-mono);
  text-align: center;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-sizing: border-box;
}

.sensing-source-live {
  background: rgba(0, 204, 136, 0.15);
  border: 1px solid #00cc88;
  color: #00cc88;
}

.sensing-source-reconnecting {
  background: rgba(255, 180, 0, 0.12);
  border: 1px solid var(--color-warning);
  color: var(--color-warning);
  animation: pulse 1.5s infinite;
}

.sensing-source-server-sim {
  background: rgba(255, 165, 0, 0.15);
  border: 1px solid #ffa500;
  color: #ffa500;
}

.sensing-source-simulated {
  background: rgba(255, 60, 60, 0.12);
  border: 1px solid var(--color-error);
  color: var(--color-error);
}

/* Health indicator for server-simulated data */
.health-sim {
  color: #ffa500;
  font-weight: 600;
}

/* Big RSSI value */
.sensing-big-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-family: var(--font-family-mono);
  margin-bottom: var(--space-4);
}

#sensingSparkline {
  width: 100%;
  height: 40px;
  display: block;
}

/* Meter bars */
.sensing-meters {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.sensing-meter {
  display: grid;
  grid-template-columns: 90px 1fr 50px;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
}

.sensing-meter label {
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.sensing-bar {
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.sensing-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  background: var(--color-primary);
  width: 0%;
}

.sensing-bar-fill.motion {
  background: linear-gradient(90deg, #ff6633, #ff3333);
}

.sensing-bar-fill.breath {
  background: linear-gradient(90deg, #33ccff, #3366ff);
}

.sensing-bar-fill.spectral {
  background: linear-gradient(90deg, #aa66ff, #ff66aa);
}

.sensing-bar-fill.confidence {
  background: linear-gradient(90deg, #33cc88, #00ff88);
}

.sensing-meter-val {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-align: right;
  color: var(--color-text-secondary);
}

/* Classification */
.sensing-classification {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.sensing-class-label {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  padding: var(--space-8);
  border-radius: var(--radius-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sensing-class-label.absent {
  background: rgba(var(--color-info-rgb), 0.15);
  color: var(--color-info);
}

.sensing-class-label.present_still {
  background: rgba(var(--color-success-rgb), 0.15);
  color: var(--color-success);
}

.sensing-class-label.active {
  background: rgba(var(--color-error-rgb), 0.15);
  color: var(--color-error);
}

.sensing-confidence {
  display: grid;
  grid-template-columns: 70px 1fr 40px;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
}

.sensing-confidence label {
  color: var(--color-text-secondary);
}

/* Details */
.sensing-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.sensing-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-card-border-inner);
}

.sensing-detail-row:last-child {
  border-bottom: none;
}

.sensing-detail-row span:first-child {
  color: var(--color-text-secondary);
}

.sensing-detail-row span:last-child {
  font-family: var(--font-family-mono);
  font-weight: var(--font-weight-medium);
}

/* ===== Training Tab Styles ===== */

#training .tab-header {
  margin-bottom: 20px;
}

#training .tab-header h2 {
  color: var(--color-text);
  margin: 0 0 8px 0;
}

#training .tab-header p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
}

/* Training Panel */
.training-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
}

.training-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-card-border-inner);
}

.training-panel-header h3 {
  color: var(--color-text);
  margin: 0;
  font-size: var(--font-size-base);
}

.training-status-badge {
  padding: var(--space-2) 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
}

.training-status-idle {
  background: var(--color-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.training-status-active {
  background: rgba(var(--color-error-rgb), 0.15);
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb), var(--status-border-opacity));
  animation: pulse-training 2s infinite;
}

.training-status-completed {
  background: rgba(var(--color-success-rgb), 0.15);
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), var(--status-border-opacity));
}

@keyframes pulse-training {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Recording list */
.recording-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px var(--space-12);
  background: var(--color-secondary);
  border: 1px solid var(--color-card-border-inner);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-8);
}

.recording-item-info {
  flex: 1;
}

.recording-item-name {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.recording-item-meta {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  margin-top: var(--space-2);
}

/* Model cards */
.model-card {
  padding: var(--space-12);
  background: var(--color-secondary);
  border: 1px solid var(--color-card-border-inner);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-8);
  transition: border-color 0.2s;
}

.model-card:hover {
  border-color: var(--color-border);
}

.model-card-active {
  border-left: 3px solid var(--color-success);
}

.model-card-name {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.model-card-meta {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  margin-top: var(--space-4);
}

.model-card-stats {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-8);
}

.model-card-stat {
  font-size: var(--font-size-xs);
}

.model-card-stat-label {
  color: var(--color-text-secondary);
}

.model-card-stat-value {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

/* Training chart */
.training-chart-container {
  background: var(--color-secondary);
  border: 1px solid var(--color-card-border-inner);
  border-radius: var(--radius-base);
  padding: var(--space-12);
  margin: var(--space-12) 0;
}

.training-chart-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-8);
}

/* Training config form */
.training-config-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.training-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.training-form-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.training-form-input {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  padding: var(--space-8) 10px;
  font-size: var(--font-size-sm);
  font-family: inherit;
}

.training-form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.training-form-select {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  padding: var(--space-8) 10px;
  font-size: var(--font-size-sm);
}

/* Training buttons */
.training-btn {
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  border: 1px solid transparent;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.2s;
}

.training-btn-primary {
  background: rgba(var(--color-success-rgb), 0.15);
  color: var(--color-success);
  border-color: rgba(var(--color-success-rgb), var(--status-border-opacity));
}

.training-btn-primary:hover {
  background: rgba(var(--color-success-rgb), 0.25);
}

.training-btn-danger {
  background: rgba(var(--color-error-rgb), 0.15);
  color: var(--color-error);
  border-color: rgba(var(--color-error-rgb), var(--status-border-opacity));
}

.training-btn-danger:hover {
  background: rgba(var(--color-error-rgb), 0.25);
}

.training-btn-secondary {
  background: rgba(var(--color-primary-rgb), 0.15);
  color: var(--color-primary);
  border-color: rgba(var(--color-primary-rgb), var(--status-border-opacity));
}

.training-btn-secondary:hover {
  background: rgba(var(--color-primary-rgb), 0.25);
}

.training-btn-muted {
  background: var(--color-secondary);
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.training-btn-muted:hover {
  background: var(--color-secondary-hover);
}

/* Progress bar */
.training-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-8) 0;
}

.training-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* Metrics grid */
.training-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin: var(--space-12) 0;
}

.training-metric {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-secondary);
  border-radius: var(--radius-base);
}

.training-metric-value {
  color: var(--color-text);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  font-family: var(--font-family-mono);
}

.training-metric-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-2);
}

/* Collapsible section */
.training-collapsible-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-bottom: 1px solid var(--color-card-border-inner);
}

.training-collapsible-header:hover {
  color: var(--color-primary);
}

.training-collapsible-content {
  padding: var(--space-12) 0;
}

/* Pose trail toggle in toolbar */
.pose-trail-btn {
  padding: var(--space-6) 14px;
  border-radius: var(--radius-base);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.2s;
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
}

.pose-trail-btn.active {
  background: rgba(var(--color-primary-rgb), 0.25);
  border-color: rgba(var(--color-primary-rgb), 0.6);
}

.pose-trail-btn:hover {
  background: rgba(var(--color-primary-rgb), 0.2);
}

/* ==========================================================================
   ENHANCEMENTS: Keyboard Shortcuts, Performance Monitor, Toast, Theme Toggle
   ========================================================================== */

/* --- Keyboard Shortcuts Overlay --- */

.shortcuts-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.shortcuts-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.shortcuts-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 480px;
  max-width: 90vw;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: shortcuts-enter var(--duration-normal) var(--ease-standard);
}

@keyframes shortcuts-enter {
  from { transform: scale(0.95) translateY(10px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.shortcuts-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-16) var(--space-20);
  border-bottom: 1px solid var(--color-border);
}

.shortcuts-header h2 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.shortcuts-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-4);
  line-height: 1;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast);
}

.shortcuts-close:hover {
  color: var(--color-text);
}

.shortcuts-close:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.shortcuts-body {
  padding: var(--space-16) var(--space-20);
  overflow-y: auto;
}

.shortcuts-group {
  margin-bottom: var(--space-16);
}

.shortcuts-group:last-child {
  margin-bottom: 0;
}

.shortcuts-group h3 {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-8);
}

.shortcut-row {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-6) 0;
}

.shortcut-row kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 26px;
  padding: 0 var(--space-8);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  box-shadow: 0 1px 0 var(--color-border);
}

.shortcut-row span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* --- Performance Monitor --- */

.perf-monitor {
  position: fixed;
  bottom: var(--space-16);
  right: var(--space-16);
  z-index: 9999;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-md);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  min-width: 200px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-standard);
}

.perf-monitor.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.perf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-10);
  border-bottom: 1px solid var(--color-border);
  cursor: grab;
  user-select: none;
}

.perf-header span {
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 0.1em;
  font-size: 10px;
}

.perf-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 16px;
  padding: 0 var(--space-2);
  line-height: 1;
}

.perf-close:hover {
  color: var(--color-text);
}

.perf-metrics {
  padding: var(--space-6) var(--space-10);
}

.perf-row {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-2) 0;
}

.perf-label {
  color: var(--color-text-secondary);
  width: 28px;
  font-size: 10px;
  letter-spacing: 0.05em;
}

.perf-value {
  color: var(--color-text);
  min-width: 52px;
  text-align: right;
}

.perf-value.perf-warning {
  color: var(--color-warning);
}

.perf-value.perf-ok {
  color: var(--color-success);
}

.perf-spark {
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.05);
}

[data-color-scheme="dark"] .perf-spark {
  background: rgba(255, 255, 255, 0.05);
}

/* --- Toast Notifications --- */

.toast-container {
  position: fixed;
  top: var(--space-16);
  right: var(--space-16);
  z-index: 10001;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: 400px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-10);
  padding: var(--space-12) var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-md);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  pointer-events: auto;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateX(20px);
  transition: all var(--duration-normal) var(--ease-standard);
}

.toast.toast-enter {
  opacity: 1;
  transform: translateX(0);
}

.toast.toast-exit {
  animation: toast-out var(--duration-normal) var(--ease-standard) forwards;
}

@keyframes toast-out {
  to { opacity: 0; transform: translateX(20px); height: 0; padding: 0; margin: 0; overflow: hidden; }
}

.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-error); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info { border-left: 3px solid var(--color-primary); }

.toast-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  margin-top: 1px;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info .toast-icon { color: var(--color-primary); }

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-message {
  line-height: var(--line-height-normal);
}

.toast-action {
  display: inline-block;
  margin-top: var(--space-4);
  padding: 0;
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  text-decoration: underline;
}

.toast-action:hover {
  color: var(--color-primary-hover);
}

.toast-dismiss {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 18px;
  padding: 0 var(--space-2);
  line-height: 1;
  flex-shrink: 0;
}

.toast-dismiss:hover {
  color: var(--color-text);
}

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(0, 0, 0, 0.05);
}

.toast-progress-bar {
  height: 100%;
  width: 100%;
  transform-origin: left;
}

.toast-progress-animate {
  animation: toast-progress-shrink linear forwards;
}

@keyframes toast-progress-shrink {
  from { transform: scaleX(1); }
  to { transform: scaleX(0); }
}

.toast-success .toast-progress-bar { background: var(--color-success); }
.toast-error .toast-progress-bar { background: var(--color-error); }
.toast-warning .toast-progress-bar { background: var(--color-warning); }
.toast-info .toast-progress-bar { background: var(--color-primary); }

/* --- Theme Toggle Button --- */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
}

.theme-toggle:hover {
  background: var(--color-secondary-hover);
  color: var(--color-primary);
}

.theme-toggle:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* --- Focus Visible for Accessibility --- */

.nav-tab:focus-visible,
button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* --- Skip to Content Link --- */

.skip-to-content {
  position: absolute;
  top: -100px;
  left: var(--space-16);
  padding: var(--space-8) var(--space-16);
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  z-index: 10002;
  transition: top var(--duration-fast);
}

.skip-to-content:focus {
  top: var(--space-16);
}

/* --- Responsive Toasts --- */

@media (max-width: 480px) {
  .toast-container {
    left: var(--space-8);
    right: var(--space-8);
    max-width: none;
  }

  .shortcuts-panel {
    width: 95vw;
  }
}

/* ==========================================================================
   ENHANCEMENTS V2: Command Palette, Activity Log, Data Export,
                    Fullscreen, Connection Status
   ========================================================================== */

/* --- Command Palette --- */

.cmd-palette-overlay {
  position: fixed;
  inset: 0;
  z-index: 10010;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.cmd-palette-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ==========================================================================
   MOBILE NAVIGATION - Hamburger menu for small screens
   ========================================================================== */

/* Hamburger button - hidden on desktop */
.mobile-hamburger {
  display: none;
  position: absolute;
  top: 50%;
  right: var(--space-16);
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  padding: var(--space-8);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 100;
  transition: all var(--duration-fast);
}

.mobile-hamburger:hover {
  background: var(--color-secondary-hover);
}

.mobile-hamburger:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-standard);
}

.mobile-hamburger.open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-hamburger.open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-hamburger.open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Backdrop */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9990;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.cmd-palette {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  width: 560px;
  max-width: 90vw;
  max-height: 60vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: cmd-palette-enter var(--duration-normal) var(--ease-standard);
}

@keyframes cmd-palette-enter {
  from { transform: scale(0.97) translateY(-8px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.cmd-palette-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--color-border);
}

.cmd-palette-search-icon {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.cmd-palette-input {
  flex: 1;
  border: none;
  background: none;
  outline: none;
  font-size: var(--font-size-base);
  color: var(--color-text);
  font-family: var(--font-family-base);
}

.cmd-palette-input::placeholder {
  color: var(--color-text-secondary);
}

.cmd-palette-hint {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  padding: 2px 6px;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-secondary);
}

.cmd-palette-results {
  overflow-y: auto;
  flex: 1;
  padding: var(--space-4) 0;
}

.cmd-palette-category {
  padding: var(--space-8) var(--space-16) var(--space-4);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.cmd-palette-item {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  padding: var(--space-8) var(--space-16);
  cursor: pointer;
  transition: background var(--duration-fast);
}

.cmd-palette-item:hover,
.cmd-palette-item-selected {
  background: var(--color-secondary);
}

.cmd-palette-item-icon {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
}

.cmd-palette-item-label {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.cmd-palette-empty {
  padding: var(--space-24) var(--space-16);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.cmd-palette-footer {
  display: flex;
  gap: var(--space-16);
  padding: var(--space-8) var(--space-16);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.cmd-palette-footer kbd {
  display: inline-block;
  padding: 1px 5px;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  font-family: var(--font-family-mono);
  font-size: 10px;
  margin-right: 2px;
}

/* --- Connection Status Widget --- */

.conn-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-4) var(--space-10);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--color-border);
  background: var(--color-secondary);
  transition: all var(--duration-normal);
}

.conn-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-secondary);
  transition: background var(--duration-normal);
}

.conn-status-connected .conn-status-dot {
  background: var(--color-success);
  box-shadow: 0 0 6px rgba(var(--color-success-rgb), 0.5);
}

.conn-status-reconnecting .conn-status-dot {
  background: var(--color-warning);
  animation: pulse-dot 1.5s ease-in-out infinite;
}

.conn-status-error .conn-status-dot {
  background: var(--color-error);
}

.conn-status-disconnected .conn-status-dot {
  background: var(--color-text-secondary);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.conn-status-label {
  color: var(--color-text);
}

.conn-status-reconnect {
  display: flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: 2px;
  border-radius: 3px;
  transition: color var(--duration-fast);
}

.conn-status-reconnect:hover {
  color: var(--color-primary-hover);
}

/* --- Activity Log --- */

.activity-log {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9998;
  height: 280px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-standard);
  cursor: n-resize;
}

.activity-log.visible {
  transform: translateY(0);
}

.activity-log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-12);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
  flex-shrink: 0;
  cursor: default;
}

.activity-log-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.activity-log-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.activity-log-filter {
  width: 22px;
  height: 22px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: none;
  color: var(--color-text-secondary);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  font-family: var(--font-family-mono);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.activity-log-filter.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
}

.activity-log-clear,
.activity-log-close {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  padding: var(--space-2) var(--space-6);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.activity-log-close {
  font-size: 16px;
  padding: 0 var(--space-4);
  border: none;
  line-height: 1;
}

.activity-log-clear:hover,
.activity-log-close:hover {
  color: var(--color-text);
}

.activity-log-body {
  flex: 1;
  overflow-y: auto;
  font-family: var(--font-family-mono);
  font-size: 11px;
  line-height: 1.6;
  padding: var(--space-4) 0;
}

.activity-log-entry {
  display: flex;
  gap: var(--space-8);
  padding: 1px var(--space-12);
  border-left: 2px solid transparent;
}

.activity-log-entry:hover {
  background: var(--color-secondary);
}

.activity-log-info { border-left-color: var(--color-primary); }
.activity-log-warning { border-left-color: var(--color-warning); }
.activity-log-error { border-left-color: var(--color-error); }
.activity-log-connection { border-left-color: var(--color-success); }

.activity-log-time {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.activity-log-type {
  width: 12px;
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.activity-log-info .activity-log-type { color: var(--color-primary); }
.activity-log-warning .activity-log-type { color: var(--color-warning); }
.activity-log-error .activity-log-type { color: var(--color-error); }
.activity-log-connection .activity-log-type { color: var(--color-success); }

.activity-log-msg {
  color: var(--color-text);
  word-break: break-all;
}

/* --- Data Export Dialog --- */

.export-dialog-overlay {
  position: fixed;
  inset: 0;
  z-index: 10005;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.export-dialog {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-24);
  width: 400px;
  max-width: 90vw;
}

.export-dialog h3 {
  margin: 0 0 var(--space-4);
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.export-dialog-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-16);
}

.export-dialog-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.export-option {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  padding: var(--space-10) var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.export-option:hover {
  border-color: var(--color-primary);
  background: var(--color-secondary);
}

.export-option input[type="radio"] {
  accent-color: var(--color-primary);
}

.export-option span {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.export-option small {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-left: auto;
}

.export-dialog-range {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.export-dialog-range input {
  width: 70px;
  padding: var(--space-4) var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-mono);
}

.export-dialog-actions {
  display: flex;
  gap: var(--space-8);
  justify-content: flex-end;
}

/* --- Fullscreen --- */

.fullscreen-exit-btn {
  position: fixed;
  top: var(--space-12);
  right: var(--space-12);
  z-index: 10020;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--duration-fast);
  opacity: 0.7;
}

.fullscreen-exit-btn:hover {
  opacity: 1;
  color: var(--color-primary);
}

.is-fullscreen .tab-content.active {
  padding: var(--space-16);
  background: var(--color-background);
}

/* --- Responsive adjustments --- */

@media (max-width: 640px) {
  .cmd-palette {
    width: 95vw;
    max-height: 70vh;
  }

  .activity-log {
    height: 200px;
  }

  .conn-status-label {
    display: none;
  }
}

/* Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 9991;
  width: 280px;
  max-width: 80vw;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.12);
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-standard);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-nav-list {
  padding: var(--space-16) 0;
  flex: 1;
}

.mobile-nav-item {
  display: block;
  width: 100%;
  padding: var(--space-12) var(--space-24);
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-decoration: none;
  border-left: 3px solid transparent;
}

.mobile-nav-item:hover {
  background: var(--color-secondary);
  color: var(--color-text);
}

.mobile-nav-item:focus-visible {
  outline: var(--focus-outline);
  outline-offset: -2px;
}

.mobile-nav-item.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: rgba(var(--color-success-rgb), 0.05);
  font-weight: var(--font-weight-semibold);
}

.mobile-nav-hint {
  padding: var(--space-16) var(--space-24);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

/* On mobile: show hamburger, hide desktop tabs */
@media (max-width: 768px) {
  .mobile-hamburger {
    display: flex;
  }

  .mobile-nav-active .nav-tabs {
    display: none;
  }

  .header {
    padding-right: 60px;
  }
}

/* ==========================================================================
   ONBOARDING TOUR
   ========================================================================== */

.onboarding-overlay {
  position: fixed;
  inset: 0;
  z-index: 10100;
}

.onboarding-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.onboarding-highlight {
  position: relative;
  z-index: 10101;
  box-shadow: 0 0 0 4px var(--color-primary), 0 0 0 9999px rgba(0, 0, 0, 0.55);
  border-radius: var(--radius-base);
  transition: box-shadow var(--duration-normal);
}

.onboarding-tooltip {
  position: fixed;
  z-index: 10102;
  width: 360px;
  max-width: 90vw;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-20);
  animation: onboarding-pop var(--duration-normal) var(--ease-standard);
}

.onboarding-tooltip.center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@keyframes onboarding-pop {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.onboarding-tooltip.center {
  animation-name: onboarding-pop-center;
}

@keyframes onboarding-pop-center {
  from { opacity: 0; transform: translate(-50%, -48%); }
  to { opacity: 1; transform: translate(-50%, -50%); }
}

.onboarding-progress {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.onboarding-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  transition: all var(--duration-fast);
}

.onboarding-dot.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: scale(1.2);
}

.onboarding-dot.done {
  background: var(--color-primary);
  border-color: var(--color-primary);
  opacity: 0.5;
}

.onboarding-title {
  margin: 0 0 var(--space-8);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.onboarding-text {
  margin: 0 0 var(--space-16);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

.onboarding-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.onboarding-skip {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  padding: var(--space-4);
}

.onboarding-skip:hover {
  color: var(--color-text);
}

.onboarding-nav {
  display: flex;
  gap: var(--space-8);
}

.onboarding-prev,
.onboarding-next {
  padding: var(--space-6) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.onboarding-prev {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.onboarding-prev:hover {
  background: var(--color-secondary-hover);
}

.onboarding-next {
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  color: var(--color-btn-primary-text);
}

.onboarding-next:hover {
  background: var(--color-primary-hover);
}

.onboarding-next:focus-visible,
.onboarding-prev:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* ==========================================================================
   NOTIFICATION CENTER
   ========================================================================== */

.notif-bell {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.notif-bell:hover {
  background: var(--color-secondary-hover);
  color: var(--color-primary);
}

.notif-bell:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.notif-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  background: var(--color-error);
  color: #fff;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  line-height: 16px;
  text-align: center;
  border-radius: var(--radius-full);
}

.notif-panel {
  position: fixed;
  top: 60px;
  right: var(--space-16);
  z-index: 10050;
  width: 360px;
  max-width: 90vw;
  max-height: 70vh;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--duration-normal) var(--ease-standard);
}

.notif-panel.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.notif-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.notif-panel-actions {
  display: flex;
  gap: var(--space-8);
}

.notif-mark-read,
.notif-clear {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  padding: var(--space-2) var(--space-4);
}

.notif-mark-read:hover,
.notif-clear:hover {
  color: var(--color-primary);
}

.notif-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) 0;
}

.notif-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-10);
  padding: var(--space-8) var(--space-16);
  transition: background var(--duration-fast);
}

.notif-item:hover {
  background: var(--color-secondary);
}

.notif-item.unread {
  background: rgba(var(--color-success-rgb), 0.04);
}

.notif-item-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}

.notif-info .notif-item-dot { background: var(--color-primary); }
.notif-warning .notif-item-dot { background: var(--color-warning); }
.notif-error .notif-item-dot { background: var(--color-error); }

.notif-item.read .notif-item-dot { opacity: 0.3; }

.notif-item-content {
  flex: 1;
  min-width: 0;
}

.notif-item-msg {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text);
  line-height: 1.4;
  word-break: break-word;
}

.notif-item.read .notif-item-msg {
  color: var(--color-text-secondary);
}

.notif-item-time {
  display: block;
  font-size: 10px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.notif-empty {
  padding: var(--space-24);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   IDLE MODE - Reduce visual activity when user is inactive
   ========================================================================== */

.user-idle .progress-fill,
.user-idle .sensing-bar-fill {
  transition-duration: 0s;
  animation: none;
}

.user-idle canvas {
  opacity: 0.5;
  transition: opacity 1s;
}

/* ==========================================================================
   I18N, SCREENSHOT, UPTIME, SETTINGS, REDUCED MOTION, HIGH CONTRAST
   ========================================================================== */

/* --- Language Selector --- */

.lang-selector-wrap {
  display: inline-flex;
}

.lang-selector {
  appearance: none;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-4) var(--space-20) var(--space-4) var(--space-8);
  cursor: pointer;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right 4px center;
  background-size: 14px;
}

[data-color-scheme="dark"] .lang-selector {
  background-image: var(--select-caret-dark);
}

.lang-selector:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* --- Uptime Clock --- */

.uptime-clock {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.uptime-separator {
  opacity: 0.3;
}

.uptime-duration {
  color: var(--color-primary);
}

/* --- Settings Gear --- */

.settings-gear {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--duration-fast);
}

.settings-gear:hover {
  background: var(--color-secondary-hover);
  color: var(--color-primary);
  transform: rotate(30deg);
}

.settings-gear:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* --- Quick Settings Panel --- */

.quick-settings-panel {
  position: fixed;
  top: 60px;
  right: var(--space-16);
  z-index: 10050;
  width: 320px;
  max-width: 90vw;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all var(--duration-normal) var(--ease-standard);
}

.quick-settings-panel.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.qs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--color-border);
}

.qs-header h3 {
  margin: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.qs-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 18px;
  cursor: pointer;
  padding: 0 var(--space-2);
  line-height: 1;
}

.qs-body {
  padding: var(--space-8) 0;
}

.qs-section {
  padding: var(--space-4) var(--space-16);
}

.qs-section-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  padding: var(--space-8) 0 var(--space-4);
}

.qs-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
}

.qs-toggle input {
  display: none;
}

.qs-switch {
  width: 36px;
  height: 20px;
  border-radius: 10px;
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  position: relative;
  transition: all var(--duration-fast);
  flex-shrink: 0;
}

.qs-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-text-secondary);
  transition: all var(--duration-fast);
}

.qs-toggle input:checked + .qs-switch {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.qs-toggle input:checked + .qs-switch::after {
  transform: translateX(16px);
  background: var(--color-btn-primary-text);
}

.qs-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.qs-btn,
.qs-btn-danger {
  padding: var(--space-4) var(--space-12);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-secondary);
  color: var(--color-text);
  transition: all var(--duration-fast);
}

.qs-btn:hover { background: var(--color-secondary-hover); }

.qs-btn-danger {
  color: var(--color-error);
  border-color: var(--color-error);
}

.qs-btn-danger:hover {
  background: var(--color-error);
  color: #fff;
}

/* --- Screenshot Flash --- */

.screenshot-flash {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: white;
  animation: flash-anim 0.3s ease-out forwards;
  pointer-events: none;
}

@keyframes flash-anim {
  0% { opacity: 0.7; }
  100% { opacity: 0; }
}

/* --- Reduced Motion --- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

.reduced-motion *,
.reduced-motion *::before,
.reduced-motion *::after {
  animation-duration: 0.01ms !important;
  transition-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
}

/* --- High Contrast --- */

.high-contrast {
  --color-text: #000;
  --color-text-secondary: #333;
  --color-background: #fff;
  --color-surface: #fff;
  --color-border: #000;
  --color-primary: #0055cc;
  --color-error: #cc0000;
  --color-warning: #cc6600;
  --color-success: #006600;
}

[data-color-scheme="dark"].high-contrast,
.high-contrast[data-color-scheme="dark"] {
  --color-text: #fff;
  --color-text-secondary: #ddd;
  --color-background: #000;
  --color-surface: #111;
  --color-border: #fff;
  --color-primary: #66bbff;
  --color-error: #ff6666;
  --color-warning: #ffaa44;
  --color-success: #44ff44;
}

/* --- Compact Mode --- */

.compact-mode .header { padding: var(--space-8) var(--space-16); }
.compact-mode .header h1 { font-size: var(--font-size-xl); }
.compact-mode .subtitle { display: none; }
.compact-mode .nav-tab { padding: var(--space-8) var(--space-12); font-size: var(--font-size-xs); }
.compact-mode .tab-content { padding-top: var(--space-8); }
.compact-mode .hero-section { padding: var(--space-12); }
.compact-mode .benefit-card { padding: var(--space-8); }

/* --- Responsive --- */

@media (max-width: 640px) {
  .uptime-clock { display: none; }
  .lang-selector-wrap { display: none; }
}