:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 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;
}

/* Color Vision Friendly (CVD) theme */
[data-color-scheme="cvd"] {
  /* Base colors chosen for common CVD types (deuteranopia/protanopia) */
  --color-background: #f7f7f7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;

  /* Primary uses teal-blue for better distinguishability */
  --color-primary: #0b84a5; /* teal-blue */
  --color-primary-hover: #0a7896;
  --color-primary-active: #096a86;

  /* Secondary neutral */
  --color-secondary: rgba(90, 90, 90, 0.12);
  --color-secondary-hover: rgba(90, 90, 90, 0.2);
  --color-secondary-active: rgba(90, 90, 90, 0.25);
  --color-border: rgba(90, 90, 90, 0.25);
  --color-btn-primary-text: #ffffff;

  /* Status colors selected from CVD-safe palettes */
  --color-success: #2a9d8f; /* cyan-green */
  --color-error: #d62839;   /* red accessible */
  --color-warning: #f4a261; /* orange */
  --color-info: #577590;    /* slate blue */

  --color-card-border: rgba(90, 90, 90, 0.15);
  --color-card-border-inner: rgba(90, 90, 90, 0.12);
  --color-focus-ring: rgba(11, 132, 165, 0.35);
  --color-select-caret: rgba(26, 26, 26, 0.8);

  /* Charts/background accents */
  --color-bg-1: rgba(11, 132, 165, 0.10);
  --color-bg-2: rgba(244, 162, 97, 0.12);
  --color-bg-3: rgba(42, 157, 143, 0.12);
  --color-bg-4: rgba(214, 40, 57, 0.10);
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    /* RGB versions for opacity control (Dark Mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 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(var(--color-gray-400-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 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: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* RGB versions for opacity control (dark mode) */
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  /* Colorful background palette - Dark Mode */
  --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
  --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
  --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
  --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
  --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
  --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
  --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
  --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 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(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 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: var(--color-teal-300-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* Place a more specific CVD theme after light/dark to win the cascade */
:root[data-color-scheme="cvd"], html[data-color-scheme="cvd"] {
  --color-background: #f7f7f7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #4a4a4a;

  --color-primary: #0b84a5;
  --color-primary-hover: #0a7896;
  --color-primary-active: #096a86;

  --color-secondary: rgba(90, 90, 90, 0.12);
  --color-secondary-hover: rgba(90, 90, 90, 0.2);
  --color-secondary-active: rgba(90, 90, 90, 0.25);
  --color-border: rgba(90, 90, 90, 0.25);
  --color-btn-primary-text: #ffffff;

  --color-success: #2a9d8f;
  --color-error: #d62839;
  --color-warning: #f4a261;
  --color-info: #577590;

  --color-card-border: rgba(90, 90, 90, 0.15);
  --color-card-border-inner: rgba(90, 90, 90, 0.12);
  --color-focus-ring: rgba(11, 132, 165, 0.35);
  --color-select-caret: rgba(26, 26, 26, 0.8);

  --color-bg-1: rgba(11, 132, 165, 0.10);
  --color-bg-2: rgba(244, 162, 97, 0.12);
  --color-bg-3: rgba(42, 157, 143, 0.12);
  --color-bg-4: rgba(214, 40, 57, 0.10);
}

/* 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--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://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* END PERPLEXITY DESIGN SYSTEM */
/* Session Tracker Overlay */
.session-tracker {
  position: fixed;
  top: var(--space-20);
  right: var(--space-20);
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  display: flex;
  align-items: center;
  gap: var(--space-16);
  z-index: 1500;
  box-shadow: var(--shadow-lg);
  min-width: 280px;
}

.session-info {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#sessionTime {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-family: var(--font-family-mono);
}

.session-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
}

.session-controls {
  display: flex;
  gap: var(--space-8);
}

/* Session history delete icon hover */
.session-history-list .session-actions .btn i {
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-standard);
}

.session-history-list .session-actions .btn:hover i {
  color: var(--color-error);
}

/* Enhanced App Container */
.app-container {
  display: flex;
  min-height: 100vh;
  background: var(--color-background);
}

/* Enhanced Sidebar */
.sidebar {
  width: 280px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  transition: width var(--duration-normal) var(--ease-standard),
    transform var(--duration-normal) var(--ease-standard);
  z-index: 1000;
}

.sidebar.collapsed {
  width: 72px;
  transform: none;
  overflow-x: hidden;
}

/* Collapsed: show only icons */
.sidebar.collapsed .logo span {
  display: none;
}

.sidebar.collapsed .nav-link span {
  display: none;
}

.sidebar.collapsed .nav-link {
  justify-content: center;
  padding: var(--space-12);
}

.sidebar.collapsed .sidebar-stats {
  display: none;
}

/* Attribute-driven collapsed state (applies instantly on load) */
html[data-sidebar="collapsed"] .sidebar {
  width: 72px;
  overflow-x: hidden;
}

html[data-sidebar="collapsed"] .sidebar .logo span,
html[data-sidebar="collapsed"] .sidebar .nav-link span {
  display: none;
}

html[data-sidebar="collapsed"] .sidebar .nav-link {
  justify-content: center;
  padding: var(--space-12);
}

html[data-sidebar="collapsed"] .sidebar .sidebar-stats {
  display: none;
}

html[data-sidebar="collapsed"] .main-content {
  margin-left: 72px;
}

.sidebar-header {
  padding: var(--space-24) var(--space-20);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.logo i {
  font-size: var(--font-size-2xl);
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-8);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

.sidebar-toggle:hover {
  background: var(--color-secondary);
  color: var(--color-text);
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: var(--space-16) 0;
  font-size: 17px;
}

.nav-menu li {
  margin-bottom: var(--space-4);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-12) var(--space-24);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-standard);
  font-weight: var(--font-weight-medium);
}

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

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

.nav-link i {
  width: 20px;
  text-align: center;
}

/* Sidebar Stats */
.sidebar-stats {
  padding: var(--space-20);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.sidebar-stat {
  text-align: center;
  margin-bottom: var(--space-16);
}

.stat-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

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

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  padding: var(--space-32);
  transition: margin-left var(--duration-normal) var(--ease-standard);
}

/* Prevent initial flicker: disable transitions until JS removes .no-anim */
html.no-anim .sidebar,
html.no-anim .main-content {
  transition: none !important;
}

.main-content.expanded {
  margin-left: 72px;
}

.content-section {
  display: none;
}

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

.section-header {
  margin-bottom: var(--space-32);
}

.section-header h1 {
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.section-header p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Status Bar */
.status-bar {
  display: flex;
  gap: var(--space-24);
  margin-bottom: var(--space-24);
  padding: var(--space-16);
  background: var(--color-bg-1);
  border-radius: var(--radius-base);
  flex-wrap: wrap;
}

.status-item {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.status-item i {
  color: var(--color-primary);
}

/* Enhanced Dashboard Styles */
.countdown-container {
  margin-bottom: var(--space-32);
}

.countdown-card {
  background: linear-gradient(135deg, var(--color-bg-1), var(--color-bg-3));
  text-align: center;
  padding: var(--space-32);
}

.countdown-card h2 {
  color: var(--color-text);
  margin-bottom: var(--space-24);
  font-size: var(--font-size-2xl);
}

.countdown-display {
  display: flex;
  justify-content: center;
  gap: var(--space-32);
  margin-bottom: var(--space-24);
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.countdown-number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.countdown-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--space-8);
}

.exam-date {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Enhanced Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-24);
  margin-bottom: var(--space-32);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  display: flex;
  align-items: center;
  gap: var(--space-16);
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
}

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  background: var(--color-bg-1);
  flex-shrink: 0;
}

.stat-content {
  flex: 1;
}

.stat-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0 0 var(--space-4) 0;
}

.stat-content p {
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-8) 0;
  font-size: var(--font-size-sm);
}

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

.progress-bar.small .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-standard);
}

/* Quick Actions */
.quick-actions {
  margin-bottom: var(--space-32);
}

.quick-actions h3 {
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

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

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-16) var(--space-20);
  height: 60px;
}

/* Today's Focus */
.today-focus {
  margin-bottom: var(--space-32);
}

.today-plan {
  margin-bottom: var(--space-16);
}

.plan-item-compact {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  padding: var(--space-16);
  background: var(--color-bg-2);
  border-radius: var(--radius-base);
}

.plan-day {
  min-width: 60px;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.plan-topic {
  flex: 1;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.plan-phase {
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
}

.phase-foundation {
  background: var(--color-bg-1);
  color: var(--color-primary);
}

.phase-core {
  background: var(--color-bg-3);
  color: var(--color-success);
}

.phase-advanced {
  background: var(--color-bg-6);
  color: var(--color-warning);
}

.phase-practice {
  background: var(--color-bg-4);
  color: var(--color-error);
}

.plan-actions {
  display: flex;
  gap: var(--space-12);
}

/* Study Plan Styles */
.plan-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-24);
  flex-wrap: wrap;
  gap: var(--space-16);
}

.filter-buttons {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.filter-btn {
  transition: all var(--duration-fast) var(--ease-standard);
}

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

.plan-stats {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.study-plan-container {
  display: grid;
  gap: var(--space-12);
}

.plan-item {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  display: grid;
  grid-template-columns: auto auto auto auto 1fr auto auto;
  align-items: center;
  gap: var(--space-16);
  transition: all var(--duration-normal) var(--ease-standard);
}

.plan-item:hover {
  box-shadow: var(--shadow-sm);
}

.plan-item.completed {
  background: var(--color-bg-3);
  border-color: var(--color-success);
}

.plan-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  transition: all var(--duration-fast) var(--ease-standard);
}

.plan-checkbox.checked {
  background: var(--color-success);
  border-color: var(--color-success);
}

.plan-checkbox.checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 12px;
  font-weight: bold;
}

.plan-date {
  min-width: 100px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.plan-hours {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  min-width: 80px;
}

.plan-resources {
  display: flex;
  gap: var(--space-4);
}

.resource-btn {
  padding: var(--space-2) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: all var(--duration-fast) var(--ease-standard);
}

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

/* Study Session Styles */
.session-dashboard {
  display: grid;
  gap: var(--space-32);
  margin-bottom: var(--space-32);
}

.session-timer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-32);
  text-align: center;
}

.timer-display {
  margin-bottom: var(--space-24);
}

.timer-time {
  font-size: 4rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  font-family: var(--font-family-mono);
  line-height: 1;
}

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

.timer-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.session-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-20);
}

.session-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  text-align: center;
}

.session-stat h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: 0 0 var(--space-8) 0;
}

.session-stat p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
}

.session-history-list {
  display: grid;
  gap: var(--space-12);
}

.session-item {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-base);
  padding: var(--space-16);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.session-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.session-duration {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.session-datetime {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Practice Tests Styles */
.practice-platforms, .previous-papers {
  margin-bottom: var(--space-32);
}

.platforms-grid, .papers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-20);
  margin-bottom: var(--space-24);
}

.platform-card, .paper-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  transition: all var(--duration-normal) var(--ease-standard);
}

.platform-card:hover, .paper-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.platform-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-12);
}

.platform-name {
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
}

.platform-type {
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  background: var(--color-bg-1);
  color: var(--color-primary);
}

.platform-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
}

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

.mock-scheduler {
  margin-bottom: var(--space-32);
}

.scheduler-form {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: var(--space-16);
  align-items: end;
}

/* Downloads Styles */
.downloads-grid {
  display: grid;
  gap: var(--space-32);
}

.download-category {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
}

.download-category h3 {
  color: var(--color-text);
  margin-bottom: var(--space-20);
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.download-category h3 i {
  color: var(--color-primary);
}

.download-items {
  display: grid;
  gap: var(--space-16);
}

.download-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-16);
  background: var(--color-bg-1);
  border-radius: var(--radius-base);
  gap: var(--space-16);
}

.download-info h4 {
  color: var(--color-text);
  margin: 0 0 var(--space-4) 0;
  font-size: var(--font-size-base);
}

.download-info p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
}

/* Analytics Styles */
.analytics-dashboard {
  display: grid;
  gap: var(--space-32);
}

.analytics-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-20);
}

.summary-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  text-align: center;
}

.summary-card h3 {
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-16) 0;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
}

.score-display {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-8);
}

.score-trend {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

.charts-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-24);
}

.chart-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
}

.chart-card h3 {
  margin-bottom: var(--space-20);
  color: var(--color-text);
  text-align: center;
}

/* Resources Styles */
.resources-content {
  display: grid;
  gap: var(--space-32);
}

.resource-section {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
}

.resource-section h3 {
  color: var(--color-text);
  margin-bottom: var(--space-20);
}

.topics-analysis {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-16);
}

.topic-analysis-item {
  background: var(--color-bg-1);
  padding: var(--space-16);
  border-radius: var(--radius-base);
}

.topic-analysis-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.topic-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.topic-weightage {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

.topic-details {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.strategy-matrix {
  overflow-x: auto;
}

.strategy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.strategy-table th,
.strategy-table td {
  padding: var(--space-12);
  text-align: center;
  border: 1px solid var(--color-border);
}

.strategy-table th {
  background: var(--color-bg-1);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.strategy-table td {
  color: var(--color-text);
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-16);
}

.tip-card {
  background: var(--color-bg-2);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  border-left: 4px solid var(--color-primary);
}

.tip-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.tip-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Settings Styles */
.settings-content {
  display: grid;
  gap: var(--space-32);
}

.settings-group h3 {
  color: var(--color-text);
  margin-bottom: var(--space-16);
}

.setting-item {
  margin-bottom: var(--space-20);
}

.setting-item label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.data-actions {
  display: flex;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
  flex-wrap: wrap;
}

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

.data-info p {
  margin: var(--space-4) 0;
}

/* Toast Notifications */
.toast {
  position: fixed;
  top: var(--space-20);
  right: var(--space-20);
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-base);
  padding: var(--space-16);
  display: flex;
  align-items: center;
  gap: var(--space-12);
  z-index: 3000;
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.toast.show {
  transform: translateX(0);
}

.toast.hidden {
  display: none;
}

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

.toast-icon {
  color: white;
}

.toast-message {
  font-weight: var(--font-weight-medium);
}

.toast-close {
  background: none;
  border: none;
  color: white;
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: 0;
  margin-left: var(--space-8);
}

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

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

.toast.info {
  background: var(--color-info);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4000;
}

.loading-overlay.hidden {
  display: none;
}

.loading-spinner {
  text-align: center;
  color: white;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-16) auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

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

.modal-header h3 {
  margin: 0;
  color: var(--color-text);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

.modal-close:hover {
  background: var(--color-secondary);
  color: var(--color-text);
}

  .modal-body {
    padding: var(--space-20);
  }
/* Scheduled mocks list */
#scheduledMockList {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  margin-bottom: var(--space-24);
}

.routine-stat.card {
  padding: var(--space-20);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.routine-stat .stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

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

.routine-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.routine-item.card {
  padding: 0;
}

.routine-row {
  display: grid;
  grid-template-columns: auto 160px 1fr auto;
  align-items: center;
  gap: var(--space-12);
  padding: var(--space-12) var(--space-16);
  border-left: 4px solid var(--color-primary);
}

.routine-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.routine-time {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.routine-title {
  color: var(--color-text);
}

.routine-badge {
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* Category accents */
.routine-item.cat-physical .routine-badge {
  color: var(--color-success);
  border-color: rgba(var(--color-success-rgb, 33,128,141), 0.4);
  background: rgba(var(--color-success-rgb, 33,128,141), 0.12);
}

.routine-item.cat-nutrition .routine-badge {
  color: var(--color-warning);
  border-color: rgba(var(--color-warning-rgb, 168,75,47), 0.4);
  background: rgba(var(--color-warning-rgb, 168,75,47), 0.12);
}

.routine-item.cat-study .routine-badge {
  color: var(--color-primary);
  border-color: rgba(var(--color-teal-500-rgb, 33,128,141), 0.4);
  background: rgba(var(--color-teal-500-rgb, 33,128,141), 0.12);
}

.routine-item.cat-break .routine-badge {
  color: var(--color-info);
  border-color: rgba(var(--color-info-rgb, 98,108,113), 0.4);
  background: rgba(var(--color-info-rgb, 98,108,113), 0.12);
}

.routine-item.cat-assessment .routine-badge {
  color: var(--color-error);
  border-color: rgba(var(--color-error-rgb, 192,21,47), 0.4);
  background: rgba(var(--color-error-rgb, 192,21,47), 0.12);
}

.routine-item.cat-planning .routine-badge {
  color: var(--color-text-secondary);
  border-color: var(--color-card-border);
  background: var(--color-secondary);
}

.routine-item.cat-rest .routine-badge {
  color: var(--color-text-secondary);
  border-color: var(--color-card-border);
  background: var(--color-secondary);
}

.routine-item.is-done .routine-title,
.routine-item.is-done .routine-time {
  text-decoration: line-through;
  opacity: 0.7;
}

@media (max-width: 640px) {
  .routine-row {
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
      "check title badge"
      "check time badge";
  }
  .routine-check { grid-area: check; }
  .routine-time { grid-area: time; }
  .routine-title { grid-area: title; }
  .routine-badge { grid-area: badge; }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .session-tracker {
    position: relative;
    top: auto;
    margin-bottom: var(--space-16);
  }
  
  .timer-controls {
    flex-direction: column;
  }
  
  .scheduler-form {
    grid-template-columns: 1fr;
  }
  
  .charts-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-280px);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
    padding: var(--space-16);
  }
  
  .session-tracker {
    flex-direction: column;
    gap: var(--space-12);
  }
  
  .status-bar {
    flex-direction: column;
    gap: var(--space-12);
  }
  
  .countdown-display {
    gap: var(--space-16);
  }
  
  .countdown-number {
    font-size: var(--font-size-3xl);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    grid-template-columns: 1fr;
  }
  
  .plan-item {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: left;
  }
  
  .plan-controls {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .session-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .platforms-grid, .papers-grid {
    grid-template-columns: 1fr;
  }
  
  .analytics-summary {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .data-actions {
    flex-direction: column;
  }
  
  .timer-time {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--space-12);
  }
  
  .countdown-display {
    flex-direction: column;
    gap: var(--space-12);
  }
  
  .session-stats-grid {
    grid-template-columns: 1fr;
  }
  
  .analytics-summary {
    grid-template-columns: 1fr;
  }
  
  .topics-analysis {
    grid-template-columns: 1fr;
  }
  
  .tips-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    width: 95%;
    margin: var(--space-16);
  }
  
  .timer-time {
    font-size: 2.5rem;
  }
}