: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;
}

/* 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);
}

/* 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 */
/* Ocean-themed FloatChat Application Styles with Dynamic Theme Support */

/* Theme-aware Custom Properties */
:root {
  /* Light Theme (Default) */
  --theme-bg-primary: #f0f9ff;
  --theme-bg-secondary: #e0f2fe;
  --theme-bg-tertiary: #bae6fd;
  --theme-text-primary: #1e293b;
  --theme-text-secondary: #334155;
  --theme-text-muted: #64748b;
  --theme-accent-primary: #06b6d4;
  --theme-accent-secondary: #f97316;
  --theme-accent-success: #10b981;
  --theme-accent-warning: #f59e0b;
  --theme-chat-user: #ffffff;
  --theme-chat-bot: #e0f2fe;
  --theme-chat-shadow: rgba(0,0,0,0.1);
  --theme-border-color: rgba(30, 41, 59, 0.2);
  --theme-overlay-bg: rgba(240, 249, 255, 0.9);
  --theme-glass-bg: rgba(255, 255, 255, 0.1);
  
  /* Ocean Animation Colors - Light */
  --ocean-fish-1: #fbbf24;
  --ocean-fish-2: #f97316;
  --ocean-fish-3: #ef4444;
  --ocean-jellyfish: #a78bfa;
  --ocean-bubble: #06b6d4;
  --ocean-wave: #bae6fd;
  --ocean-light-beam: rgba(6, 182, 212, 0.4);
  --ocean-foam: rgba(6, 182, 212, 0.2);
  
  /* Gradients - Light */
  --ocean-gradient: linear-gradient(135deg, #f0f9ff 0%, #bae6fd 50%, #06b6d4 100%);
  --ocean-gradient-radial: radial-gradient(circle at center, #06b6d4 0%, #bae6fd 70%, #f0f9ff 100%);
  
  /* Base theme variables from design system */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --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;
  
  --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;
  
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-theme: 300ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-theme: cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --theme-bg-primary: #0f172a;
  --theme-bg-secondary: #1e293b;
  --theme-bg-tertiary: #334155;
  --theme-text-primary: #e2e8f0;
  --theme-text-secondary: #cbd5e1;
  --theme-text-muted: #94a3b8;
  --theme-accent-primary: #22d3ee;
  --theme-accent-secondary: #fb923c;
  --theme-accent-success: #34d399;
  --theme-accent-warning: #fbbf24;
  --theme-chat-user: #1e293b;
  --theme-chat-bot: #334155;
  --theme-chat-shadow: rgba(34,211,238,0.2);
  --theme-border-color: rgba(148, 163, 184, 0.3);
  --theme-overlay-bg: rgba(15, 23, 42, 0.9);
  --theme-glass-bg: rgba(255, 255, 255, 0.05);
  
  /* Ocean Animation Colors - Dark (Bioluminescent) */
  --ocean-fish-1: #22d3ee;
  --ocean-fish-2: #fb923c;
  --ocean-fish-3: #f472b6;
  --ocean-jellyfish: #a855f7;
  --ocean-bubble: #22d3ee;
  --ocean-wave: #1e293b;
  --ocean-light-beam: rgba(34, 211, 238, 0.6);
  --ocean-foam: rgba(34, 211, 238, 0.3);
  
  /* Gradients - Dark */
  --ocean-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #22d3ee 100%);
  --ocean-gradient-radial: radial-gradient(circle at center, #22d3ee 0%, #1e293b 70%, #0f172a 100%);
}

/* Base Styles with Theme Transitions */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-base);
  background: var(--theme-bg-primary);
  color: var(--theme-text-primary);
  overflow-x: hidden;
  transition: background-color var(--duration-theme) var(--ease-theme),
              color var(--duration-theme) var(--ease-theme);
}

.hidden {
  display: none !important;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-16);
}

/* Preloader Styles with Theme Support */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--ocean-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease,
              background var(--duration-theme) var(--ease-theme);
}

.preloader-content {
  text-align: center;
  color: var(--theme-text-primary);
  transition: color var(--duration-theme) var(--ease-theme);
}

.ocean-ripple {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 2rem;
}

.ripple {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid var(--theme-accent-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: ripple 2s infinite;
  transition: border-color var(--duration-theme) var(--ease-theme);
}

.ripple:nth-child(2) {
  animation-delay: 0.7s;
}

.ripple:nth-child(3) {
  animation-delay: 1.4s;
}

@keyframes ripple {
  0% {
    width: 20px;
    height: 20px;
    opacity: 1;
  }
  100% {
    width: 120px;
    height: 120px;
    opacity: 0;
  }
}

.loading-text {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 1rem;
  background: linear-gradient(45deg, var(--theme-accent-primary), var(--theme-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: background var(--duration-theme) var(--ease-theme);
}

.loading-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--theme-accent-primary);
  animation: loading-bounce 1.4s infinite both;
  transition: background-color var(--duration-theme) var(--ease-theme);
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes loading-bounce {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* Ocean Background with Theme Transitions */
.ocean-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--ocean-gradient);
  z-index: -1;
  overflow: hidden;
  transition: background var(--duration-theme) var(--ease-theme);
}

/* Wave Layers with Theme Colors */
.wave-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(6,182,212,0.1)"/></svg>');
  background-repeat: repeat-x;
  animation: wave-move 10s linear infinite;
  transition: opacity var(--duration-theme) var(--ease-theme);
}

[data-theme="dark"] .wave-layer {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(34,211,238,0.15)"/></svg>');
}

.wave-2 {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(6,182,212,0.05)"/></svg>');
  animation: wave-move 15s linear infinite reverse;
  transform: translateY(20px);
}

[data-theme="dark"] .wave-2 {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(34,211,238,0.08)"/></svg>');
}

.wave-3 {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(6,182,212,0.03)"/></svg>');
  animation: wave-move 20s linear infinite;
  transform: translateY(40px);
}

[data-theme="dark"] .wave-3 {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M321.39,56.44c58-10.79,114.16-30.13,172-41.86,82.39-16.72,168.19-17.73,250.45-.39C823.78,31,906.67,72,985.66,92.83c70.05,18.48,146.53,26.09,214.34,3V0H0V27.35A600.21,600.21,0,0,0,321.39,56.44Z" fill="rgba(34,211,238,0.05)"/></svg>');
}

@keyframes wave-move {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Floating Elements with Theme Colors */
.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.fish, .jellyfish, .boat {
  position: absolute;
  font-size: 2.5rem;
  opacity: 0.8;
  z-index: 1;
  filter: drop-shadow(0 0 10px var(--ocean-foam));
  transition: filter var(--duration-theme) var(--ease-theme);
}

/* Theme-specific glow effects for dark mode */
[data-theme="dark"] .fish,
[data-theme="dark"] .jellyfish {
  filter: drop-shadow(0 0 15px var(--ocean-foam)) brightness(1.2);
}

.fish-1 {
  top: 20%;
  left: -100px;
  animation: swim-right 20s linear infinite;
}

.fish-2 {
  top: 60%;
  left: -120px;
  animation: swim-right 25s linear infinite;
  animation-delay: -5s;
}

.fish-3 {
  top: 40%;
  left: -80px;
  animation: swim-right 30s linear infinite;
  animation-delay: -10s;
}

.jellyfish-1, .jellyfish-2 {
  animation: jellyfish-float 6s ease-in-out infinite;
  font-size: 3rem;
}

.jellyfish-1 {
  top: 30%;
  left: 10%;
  animation-delay: 0s;
}

.jellyfish-2 {
  top: 70%;
  right: 10%;
  animation-delay: -3s;
}

.boat {
  top: 10%;
  left: -150px;
  animation: sail 40s linear infinite;
  font-size: 2rem;
}

@keyframes swim-right {
  0% {
    transform: translateX(-100px);
  }
  100% {
    transform: translateX(calc(100vw + 100px));
  }
}

@keyframes jellyfish-float {
  0%, 100% {
    transform: translateY(0) scale(1);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-30px) scale(1.2);
    opacity: 1;
  }
}

@keyframes sail {
  0% {
    transform: translateX(-150px);
  }
  100% {
    transform: translateX(calc(100vw + 150px));
  }
}

/* Bubbles with Enhanced Dark Mode Glow */
.bubbles {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.bubble {
  position: absolute;
  bottom: -50px;
  background: radial-gradient(circle, var(--ocean-bubble), transparent 70%);
  border: 1px solid var(--ocean-foam);
  border-radius: 50%;
  animation: bubble-rise 10s linear infinite;
  animation-delay: var(--delay);
  width: var(--size);
  height: var(--size);
  left: calc(var(--delay) * 15% + 10%);
  box-shadow: 0 0 10px var(--ocean-foam);
  transition: background var(--duration-theme) var(--ease-theme),
              box-shadow var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

[data-theme="dark"] .bubble {
  box-shadow: 0 0 20px var(--ocean-foam), inset 0 0 10px var(--ocean-foam);
}

@keyframes bubble-rise {
  0% {
    bottom: -50px;
    opacity: 0;
    transform: translateX(0) scale(0);
  }
  10% {
    opacity: 0.8;
    transform: scale(1);
  }
  90% {
    opacity: 0.8;
  }
  100% {
    bottom: calc(100vh + 50px);
    opacity: 0;
    transform: translateX(100px) scale(0.3);
  }
}

/* Light Beams with Enhanced Theme Effects */
.light-beams {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.light-beam {
  position: absolute;
  top: -50%;
  width: 3px;
  height: 200%;
  background: linear-gradient(to bottom, 
    transparent, 
    var(--ocean-light-beam) 20%, 
    var(--ocean-light-beam) 50%,
    var(--ocean-light-beam) 80%, 
    transparent
  );
  animation: light-shift 12s ease-in-out infinite;
  opacity: 0.7;
  transition: background var(--duration-theme) var(--ease-theme),
              opacity var(--duration-theme) var(--ease-theme);
}

[data-theme="dark"] .light-beam {
  opacity: 0.9;
  box-shadow: 0 0 10px var(--ocean-light-beam);
}

.beam-1 {
  left: 20%;
  animation-delay: 0s;
}

.beam-2 {
  left: 50%;
  animation-delay: -4s;
}

.beam-3 {
  left: 80%;
  animation-delay: -8s;
}

@keyframes light-shift {
  0%, 100% {
    transform: translateX(-30px) rotate(3deg);
    opacity: 0.3;
  }
  50% {
    transform: translateX(30px) rotate(-3deg);
    opacity: 0.7;
  }
}

[data-theme="dark"] .light-beam {
  animation: light-shift-dark 12s ease-in-out infinite;
}

@keyframes light-shift-dark {
  0%, 100% {
    transform: translateX(-30px) rotate(3deg);
    opacity: 0.5;
  }
  50% {
    transform: translateX(30px) rotate(-3deg);
    opacity: 1;
  }
}

/* Header with Theme Support */
.header {
  position: relative;
  background: var(--theme-overlay-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--theme-border-color);
  padding: var(--space-16) 0;
  z-index: 10;
  transition: background-color var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.logo-icon {
  font-size: 2rem;
  animation: float 3s ease-in-out infinite;
  transition: filter var(--duration-theme) var(--ease-theme);
}

[data-theme="dark"] .logo-icon {
  filter: drop-shadow(0 0 10px var(--theme-accent-primary));
}

.logo h1 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(45deg, var(--theme-accent-primary), var(--theme-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  transition: background var(--duration-theme) var(--ease-theme);
}

.beta-tag {
  background: var(--theme-glass-bg);
  color: var(--theme-accent-primary);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--theme-border-color);
  transition: background-color var(--duration-theme) var(--ease-theme),
              color var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* Theme Toggle Styles */
.theme-toggle-container {
  display: flex;
  align-items: center;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-standard);
}

.theme-toggle:hover {
  background: var(--theme-glass-bg);
}

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

.theme-toggle-track {
  width: 60px;
  height: 32px;
  background: var(--theme-glass-bg);
  border: 2px solid var(--theme-border-color);
  border-radius: var(--radius-full);
  position: relative;
  transition: all var(--duration-theme) var(--ease-theme);
}

.theme-toggle-thumb {
  width: 24px;
  height: 24px;
  background: var(--theme-accent-primary);
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transform: translateX(0);
  transition: all var(--duration-theme) var(--ease-theme);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(28px);
}

.theme-icon {
  position: absolute;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-theme) var(--ease-theme);
}

.theme-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: #fbbf24;
}

.theme-icon-moon {
  opacity: 0;
  transform: rotate(180deg) scale(0.5);
  color: #e2e8f0;
}

.theme-icon-moon svg {
  fill: currentColor;
  stroke: none;
}

[data-theme="dark"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(180deg) scale(0.5);
}

[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Main Content with Theme Support */
.main-content {
  min-height: calc(100vh - 200px);
  padding: var(--space-32) 0;
  position: relative;
  z-index: 5;
}

.chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-32);
  height: 70vh;
}

/* Sidebar with Theme Support */
.sidebar {
  background: var(--theme-overlay-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--theme-border-color);
  padding: var(--space-24);
  height: fit-content;
  z-index: 5;
  transition: background-color var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

.sidebar h3 {
  color: var(--theme-accent-primary);
  margin-bottom: var(--space-20);
  font-size: var(--font-size-lg);
  transition: color var(--duration-theme) var(--ease-theme);
}

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

.suggestion-btn {
  background: var(--theme-glass-bg);
  border: 1px solid var(--theme-border-color);
  color: var(--theme-text-primary);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  text-align: left;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
}

.suggestion-btn:hover {
  background: var(--theme-accent-primary);
  color: var(--theme-bg-primary);
  border-color: var(--theme-accent-primary);
  transform: translateX(5px);
}

[data-theme="dark"] .suggestion-btn:hover {
  box-shadow: 0 0 15px var(--theme-accent-primary);
}

/* Chat Container with Theme Support */
.chat-container {
  display: flex;
  flex-direction: column;
  background: var(--theme-overlay-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--theme-border-color);
  overflow: hidden;
  z-index: 5;
  transition: background-color var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

.chat-messages {
  flex: 1;
  padding: var(--space-24);
  overflow-y: auto;
  max-height: calc(70vh - 120px);
}

.message {
  display: flex;
  gap: var(--space-12);
  margin-bottom: var(--space-20);
  animation: message-slide-in 0.3s ease-out;
}

@keyframes message-slide-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-avatar {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--theme-accent-primary), var(--theme-accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: background var(--duration-theme) var(--ease-theme);
}

.user-message .message-avatar {
  background: linear-gradient(135deg, var(--theme-accent-secondary), var(--theme-accent-primary));
}

.message-content {
  flex: 1;
  background: var(--theme-chat-bot);
  border-radius: var(--radius-base);
  padding: var(--space-12) var(--space-16);
  backdrop-filter: blur(5px);
  border: 1px solid var(--theme-border-color);
  box-shadow: 0 2px 4px var(--theme-chat-shadow);
  transition: all var(--duration-theme) var(--ease-theme);
}

.user-message .message-content {
  background: var(--theme-chat-user);
}

[data-theme="dark"] .message-content {
  box-shadow: 0 2px 8px var(--theme-chat-shadow), 0 0 10px var(--ocean-foam);
}

.message-text {
  line-height: 1.6;
  color: var(--theme-text-primary);
  transition: color var(--duration-theme) var(--ease-theme);
}

.welcome-message .message-content {
  background: linear-gradient(135deg, var(--theme-accent-primary), var(--theme-accent-secondary));
  background-size: 200% 200%;
  animation: gradient-shift 4s ease-in-out infinite;
  color: var(--theme-bg-primary);
  border-color: var(--theme-accent-primary);
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.welcome-message .message-text {
  color: var(--theme-bg-primary);
}

/* Typing Indicator with Theme Support */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  padding: 0 var(--space-24) var(--space-16);
  animation: fade-in 0.3s ease-out;
}

.typing-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-12) var(--space-16);
  background: var(--theme-glass-bg);
  border-radius: var(--radius-base);
  border: 1px solid var(--theme-border-color);
  transition: all var(--duration-theme) var(--ease-theme);
}

.typing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--theme-accent-primary);
  animation: typing-bounce 1.4s infinite both;
  transition: background-color var(--duration-theme) var(--ease-theme);
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* Chat Input with Theme Support */
.chat-input-container {
  padding: var(--space-24);
  border-top: 1px solid var(--theme-border-color);
  background: var(--theme-bg-secondary);
  transition: all var(--duration-theme) var(--ease-theme);
}

.input-group {
  display: flex;
  gap: var(--space-12);
  align-items: center;
}

.chat-input {
  flex: 1;
  background: var(--theme-glass-bg);
  border: 1px solid var(--theme-border-color);
  border-radius: var(--radius-base);
  padding: var(--space-12) var(--space-16);
  color: var(--theme-text-primary);
  font-size: var(--font-size-base);
  transition: all var(--duration-fast) var(--ease-standard);
}

.chat-input:focus {
  outline: none;
  border-color: var(--theme-accent-primary);
  box-shadow: 0 0 0 3px var(--ocean-foam);
}

.chat-input::placeholder {
  color: var(--theme-text-muted);
  transition: color var(--duration-theme) var(--ease-theme);
}

.send-button {
  background: linear-gradient(135deg, var(--theme-accent-primary), var(--theme-accent-secondary));
  border: none;
  border-radius: 50%;
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  color: var(--theme-bg-primary);
}

.send-button:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 15px var(--ocean-foam);
}

.send-button:active {
  transform: scale(0.95);
}

/* Visualization Panel with Theme Support */
.visualization-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90vw;
  max-width: 900px;
  max-height: 80vh;
  background: var(--theme-overlay-bg);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--theme-border-color);
  z-index: 1000;
  animation: panel-slide-in 0.3s ease-out;
  transition: background-color var(--duration-theme) var(--ease-theme),
              border-color var(--duration-theme) var(--ease-theme);
}

@keyframes panel-slide-in {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-24);
  border-bottom: 1px solid var(--theme-border-color);
  transition: border-color var(--duration-theme) var(--ease-theme);
}

.panel-header h3 {
  color: var(--theme-accent-primary);
  margin: 0;
  transition: color var(--duration-theme) var(--ease-theme);
}

.close-panel {
  background: none;
  border: none;
  color: var(--theme-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-8);
  border-radius: 50%;
  transition: all var(--duration-fast) var(--ease-standard);
}

.close-panel:hover {
  background: var(--theme-glass-bg);
  color: var(--theme-accent-primary);
}

.panel-content {
  padding: var(--space-24);
}

.viz-tabs {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-24);
}

.tab-btn {
  background: var(--theme-glass-bg);
  border: 1px solid var(--theme-border-color);
  color: var(--theme-text-primary);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
}

.tab-btn.active {
  background: var(--theme-accent-primary);
  color: var(--theme-bg-primary);
  border-color: var(--theme-accent-primary);
}

[data-theme="dark"] .tab-btn.active {
  box-shadow: 0 0 10px var(--theme-accent-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fade-in 0.3s ease-out;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Footer with Theme Support */
.footer {
  background: var(--theme-overlay-bg);
  border-top: 1px solid var(--theme-border-color);
  padding: var(--space-24) 0;
  position: relative;
  overflow: hidden;
  z-index: 10;
  transition: all var(--duration-theme) var(--ease-theme);
}

.footer-content {
  text-align: center;
  position: relative;
  z-index: 2;
}

.attribution {
  color: var(--theme-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
  transition: color var(--duration-theme) var(--ease-theme);
}

.attribution strong {
  color: var(--theme-accent-primary);
  font-weight: var(--font-weight-semibold);
  transition: color var(--duration-theme) var(--ease-theme);
}

.footer-waves {
  position: absolute;
  top: -20px;
  left: 0;
  width: 100%;
  height: 40px;
}

.footer-wave {
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M985.66,92.83C906.67,72,823.78,31,743.84,14.19c-82.26-17.34-168.06-16.33-250.45.39-57.84,11.73-114,31.07-172,41.86A600.21,600.21,0,0,1,0,27.35V120H1200V95.8C1132.19,118.92,1055.71,111.31,985.66,92.83Z" fill="rgba(6,182,212,0.1)"/></svg>');
  background-repeat: repeat-x;
  animation: wave-move 8s linear infinite;
  transition: background-image var(--duration-theme) var(--ease-theme);
}

[data-theme="dark"] .footer-wave {
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M985.66,92.83C906.67,72,823.78,31,743.84,14.19c-82.26-17.34-168.06-16.33-250.45.39-57.84,11.73-114,31.07-172,41.86A600.21,600.21,0,0,1,0,27.35V120H1200V95.8C1132.19,118.92,1055.71,111.31,985.66,92.83Z" fill="rgba(34,211,238,0.15)"/></svg>');
}

/* Custom scrollbar with theme support */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: var(--theme-glass-bg);
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--theme-accent-primary);
  border-radius: 3px;
  transition: background-color var(--duration-theme) var(--ease-theme);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--theme-accent-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .chat-layout {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }
  
  .sidebar {
    order: 2;
    height: auto;
  }
  
  .chat-container {
    order: 1;
    height: 60vh;
  }
  
  .visualization-panel {
    width: 95vw;
    max-height: 85vh;
  }
  
  .container {
    padding: 0 var(--space-12);
  }
  
  .logo h1 {
    font-size: var(--font-size-2xl);
  }
  
  .fish, .jellyfish, .boat {
    font-size: 1.8rem;
  }
  
  .theme-toggle-track {
    width: 50px;
    height: 28px;
  }
  
  .theme-toggle-thumb {
    width: 20px;
    height: 20px;
  }
  
  [data-theme="dark"] .theme-toggle-thumb {
    transform: translateX(22px);
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--space-20) 0;
  }
  
  .chat-layout {
    gap: var(--space-16);
  }
  
  .sidebar, .chat-container {
    padding: var(--space-16);
  }
  
  .panel-content, .panel-header {
    padding: var(--space-16);
  }
  
  .fish, .jellyfish, .boat {
    font-size: 1.5rem;
  }
  
  .header-content {
    flex-direction: row;
    justify-content: space-between;
  }
  
  .logo {
    gap: var(--space-8);
  }
  
  .logo h1 {
    font-size: var(--font-size-xl);
  }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  .theme-toggle-track {
    border-width: 3px;
  }
  
  .message-content {
    border-width: 2px;
  }
  
  .suggestion-btn,
  .tab-btn,
  .chat-input {
    border-width: 2px;
  }
}