: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 */
/* 基础样式重置和字体设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

/* 多巴胺配色方案 */
:root {
  /* 多巴胺浅色系配色 */
  --primary-blue: #87CEEB;
  --primary-green: #98FB98;
  --primary-yellow: #FFE4B5;
  --primary-pink: #FFB6C1;
  --primary-purple: #DDA0DD;
  --primary-orange: #FFDAB9;
  --primary-mint: #F0FFF0;
  --primary-lavender: #E6E6FA;
  
  /* 主要颜色 */
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --white: #ffffff;
  --gradient-1: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
  --gradient-2: linear-gradient(135deg, var(--primary-pink), var(--primary-yellow));
  --gradient-3: linear-gradient(135deg, var(--primary-purple), var(--primary-blue));
  --gradient-4: linear-gradient(135deg, var(--primary-orange), var(--primary-pink));
  
  /* 阴影 */
  --shadow-light: 0 2px 20px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  /* 动画 */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition-smooth);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--text-dark);
}

.nav-brand i {
  font-size: 1.5rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-progress {
  flex: 1;
  max-width: 200px;
  height: 4px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2px;
  margin-left: 2rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-1);
  border-radius: 2px;
  transition: width 0.3s ease;
}

/* 英雄区域 */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.7);
  display: block;
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, 
    rgba(135, 206, 235, 0.3) 0%, 
    rgba(152, 251, 152, 0.3) 50%, 
    rgba(255, 182, 193, 0.3) 100%);
  z-index: 1;
}

.hero-content {
  text-align: center;
  color: white;
  max-width: 800px;
  padding: 0 2rem;
  animation: heroFadeIn 1.5s ease-out;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.title-line {
  display: block;
  opacity: 0;
  animation: titleSlideIn 0.8s ease-out forwards;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.4s; }
.title-line:nth-child(3) { animation-delay: 0.6s; }

.title-highlight {
  background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 1s ease-out 0.8s forwards;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.hero-btn {
  font-size: 1.1rem;
  padding: 1rem 2rem;
  opacity: 0;
  animation: fadeInUp 1s ease-out 1s forwards;
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: white;
  animation: bounce 2s infinite;
  z-index: 2;
}

.hero-scroll span {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-scroll i {
  font-size: 1.2rem;
}

/* 通用section样式 */
.section {
  padding: 6rem 0;
  position: relative;
}

.section:nth-child(even) {
  background: linear-gradient(135deg, var(--primary-mint), var(--primary-lavender));
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--gradient-2);
  color: var(--text-dark);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* 雷克雅未克section */
.reykjavik-section {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-mint));
  position: relative;
}

.reykjavik-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://pplx-res.cloudinary.com/image/upload/v1752998839/pplx_project_search_images/dc4726554587ba08215ce285406330e45e8fe5b0.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.1;
  z-index: -1;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.content-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  transition: var(--transition-smooth);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.content-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-heavy);
  background: rgba(255, 255, 255, 1);
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.content-card h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.content-card p {
  color: var(--text-light);
  line-height: 1.7;
}

.city-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
}

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

.stat-number {
  font-family: 'Poppins', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-light);
  font-weight: 500;
}

/* 黄金圈总览 */
.golden-circle-overview {
  background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
  position: relative;
}

.golden-circle-overview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://pplx-res.cloudinary.com/image/upload/v1752998839/pplx_project_search_images/63c158c6ffbcb4808e0ffc1fa5d268afbea42594.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.15;
  z-index: -1;
}

.golden-circle-intro {
  margin-bottom: 4rem;
}

.intro-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.intro-text h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
}

.intro-text p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.magazine-quote {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 15px;
  box-shadow: var(--shadow-light);
  position: relative;
  margin-top: 2rem;
}

.magazine-quote i {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.magazine-quote blockquote {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--text-dark);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.magazine-quote cite {
  color: var(--text-light);
  font-weight: 600;
}

.attractions-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.attraction-preview {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.attraction-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s;
}

.attraction-preview:hover::before {
  left: 100%;
}

.attraction-preview:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-heavy);
}

.preview-number {
  font-family: 'Poppins', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.attraction-preview h4 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.attraction-preview p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.attraction-preview i {
  font-size: 2rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 景点详情section */
.attraction-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: white;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
}

.attraction-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.attraction-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.4);
  display: block;
}

.attraction-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, 
    rgba(135, 206, 235, 0.4) 0%, 
    rgba(152, 251, 152, 0.4) 50%, 
    rgba(255, 182, 193, 0.4) 100%);
  z-index: -1;
}

.attraction-content {
  position: relative;
  z-index: 1;
}

.attraction-info {
  max-width: 800px;
}

.attraction-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(10px);
}

.attraction-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.attraction-subtitle {
  font-size: 1.5rem;
  opacity: 0.8;
  margin-bottom: 3rem;
  font-style: italic;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.attraction-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.detail-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  transition: var(--transition-smooth);
}

.detail-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(10px);
}

.detail-icon {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.detail-content h4 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.detail-content p {
  opacity: 0.9;
  line-height: 1.7;
}

/* 不同景点的特色颜色 */
/* 辛格维利尔 detail-card 白底深色文字 */
.thingvellir-section .detail-card {
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-dark);
}
.thingvellir-section .detail-card h4,
.thingvellir-section .detail-card p {
  color: var(--text-dark);
}
.thingvellir-section .detail-card .detail-icon {
  background: rgba(0, 0, 0, 0.05);
}

.thingvellir-section .attraction-bg::after {
  /* 使用浅色半透明渐变，确保整体仍为白色视觉 */
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.7) 0%,
    rgba(255, 255, 255, 0.4) 100%);
}

.geysir-section .attraction-bg {
  /* 保持外围标题为浅色 */
  color: white;
}
/* 盖歇尔间歇泉 detail-card 白底深色文字 */
.geysir-section .detail-card {
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-dark);
}
.geysir-section .detail-card h4,
.geysir-section .detail-card p {
  color: var(--text-dark);
}
.geysir-section .detail-card .detail-icon {
  background: rgba(0, 0, 0, 0.05);
}

.geysir-section .attraction-bg::after {
  /* 使用浅色半透明渐变，确保整体仍为白色视觉 */
  background: linear-gradient(135deg,
    rgba(255, 255, 255, 0.7) 0%,
    rgba(255, 255, 255, 0.4) 100%);
}

.gullfoss-section .attraction-bg::after {
  background: linear-gradient(135deg, 
    rgba(221, 160, 221, 0.4) 0%, 
    rgba(135, 206, 235, 0.4) 100%);
}

/* 评价section */
.reviews-section {
  background: linear-gradient(135deg, var(--primary-purple), var(--primary-pink));
  position: relative;
}

.reviews-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://pplx-res.cloudinary.com/image/upload/v1752367174/pplx_project_search_images/fd66ec6fdfc3dfa4d40db3c93a6e93fe1392d9df.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.1;
  z-index: -1;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.review-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.review-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-1);
}

.review-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
  background: rgba(255, 255, 255, 1);
}

.review-source {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 600;
}

.review-source i {
  font-size: 1.2rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.review-content {
  margin-bottom: 1.5rem;
  position: relative;
}

.quote-icon {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.review-content p {
  font-size: 1.1rem;
  color: var(--text-dark);
  line-height: 1.7;
  font-style: italic;
}

.review-rating {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stars {
  color: #ffd700;
}

.stars i {
  margin-right: 0.2rem;
}

.review-rating span {
  color: var(--text-light);
  font-weight: 500;
}

/* 贴士section */
.tips-section {
  background: linear-gradient(135deg, var(--primary-green), var(--primary-mint));
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.tip-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
}

.tip-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-1);
  border-radius: 22px;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s;
}

.tip-card:hover::before {
  opacity: 1;
}

.tip-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
  background: rgba(255, 255, 255, 1);
}

.tip-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: white;
}

.tip-card h4 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.tip-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* 总结section */
.conclusion-section {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.conclusion-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.conclusion-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.conclusion-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 2rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.conclusion-text {
  font-size: 1.2rem;
  line-height: 1.8;
  margin-bottom: 3rem;
  opacity: 0.9;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.conclusion-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.stat {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  padding: 2rem 1rem;
}

.stat .stat-number {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.stat .stat-label {
  opacity: 0.8;
}

.conclusion-btn {
  font-size: 1.1rem;
  padding: 1rem 2rem;
  background: white;
  color: var(--text-dark);
  border: none;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition-bounce);
}

.conclusion-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-heavy);
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 1rem;
}

.btn--primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: var(--shadow-light);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .section {
    padding: 4rem 0;
  }
  
  .content-grid,
  .tips-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .city-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .attractions-preview {
    grid-template-columns: 1fr;
  }
  
  .attraction-details {
    grid-template-columns: 1fr;
  }
  
  .detail-card {
    flex-direction: column;
    text-align: center;
  }
  
  .nav-progress {
    display: none;
  }
  
  /* Hide scroll indicator on mobile */
  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .attraction-title {
    font-size: 2.5rem;
  }
  
  .city-stats {
    grid-template-columns: 1fr;
  }
  
  .conclusion-stats {
    grid-template-columns: 1fr;
  }
}

/* 动画关键帧 */
@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes titleSlideIn {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 滚动动画类 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.show {
  opacity: 1;
  transform: translateY(0);
}

/* 滚动指示器 */
.scroll-indicator {
  position: fixed;
  top: 50%;
  right: 2rem;
  transform: translateY(-50%);
  z-index: 100;
}

.scroll-dots {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.scroll-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition-smooth);
  backdrop-filter: blur(5px);
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.scroll-dot.active {
  background: white;
  transform: scale(1.2);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* 加载动画 */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading.hidden {
  opacity: 0;
  pointer-events: none;
}