style.css

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

body {
  margin: 0;
  padding: 0;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

.btn--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');
}

/* Monument Explorer - Advanced CSS with 3D effects, animations and interactions */

/* Custom Properties and Variables */
:root {
  --monument-red: #8B4513;
  --monument-white: #FFFAFA;
  --monument-grey: #708090;
  
  --ambient-light: rgba(255, 248, 220, 0.6);
  --shadow-color: rgba(0, 0, 0, 0.25);
  --glow-primary: rgba(33, 128, 141, 0.4);
  --glow-secondary: rgba(255, 193, 133, 0.6);
  
  --time-dawn: rgba(242, 166, 94, 0.7);
  --time-noon: rgba(255, 255, 253, 0.9);
  --time-dusk: rgba(221, 85, 85, 0.7);
  --time-night: rgba(31, 64, 104, 0.8);
  
  --particle-color-1: rgba(255, 255, 255, 0.8);
  --particle-color-2: rgba(255, 244, 214, 0.6);
  
  --3d-perspective: 1000px;
  --transition-slow: 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-medium: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  
  --monument-shadow-length: 20px;
  --monument-shadow-blur: 15px;
  --monument-shadow-opacity: 0.3;
  
  --gradient-primary: linear-gradient(135deg, #1FB8CD, #172A3A);
  --gradient-secondary: linear-gradient(135deg, #FFC185, #944454);
  --gradient-accent: linear-gradient(135deg, #DB4545, #964325);
}

/* Typography Extensions */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.title-line {
  display: block;
  transform: translateY(50px);
  opacity: 0;
  animation: slideUpFade 1s forwards;
}

.line-1 {
  animation-delay: 0.2s;
}

.line-2 {
  animation-delay: 0.4s;
}

.line-3 {
  animation-delay: 0.6s;
}

/* Custom Cursor */
#custom-cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  display: none;
}

.cursor-trail {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  transform: scale(0.8);
  opacity: 0.8;
  transition: all 0.05s ease;
}

.cursor-glow {
  position: absolute;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--glow-primary);
  filter: blur(5px);
  transform: scale(1);
  opacity: 0.5;
  top: -5px;
  left: -5px;
}

@media (pointer: fine) {
  body {
    cursor: none;
  }
  
  #custom-cursor {
    display: block;
  }
  
  a, button, [role="button"], .clickable {
    cursor: none;
  }
}

/* Loading Screen Styles */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-background);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  transition: opacity 0.6s ease-out, visibility 0.6s ease-out;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-24);
}

.monument-builder {
  position: relative;
  width: 200px;
  height: 200px;
  perspective: var(--3d-perspective);
}

.stone-block {
  position: absolute;
  background-color: var(--monument-red);
  border: 1px solid rgba(0, 0, 0, 0.1);
  transform-style: preserve-3d;
  opacity: 0;
  transform: translateY(20px) rotateX(45deg) rotateZ(0deg);
  animation: buildMonument 2s forwards infinite;
}

.block-1 {
  width: 100px;
  height: 30px;
  bottom: 0;
  left: 50px;
  animation-delay: 0s;
}

.block-2 {
  width: 90px;
  height: 30px;
  bottom: 30px;
  left: 55px;
  animation-delay: 0.4s;
}

.block-3 {
  width: 80px;
  height: 30px;
  bottom: 60px;
  left: 60px;
  animation-delay: 0.8s;
}

.block-4 {
  width: 70px;
  height: 30px;
  bottom: 90px;
  left: 65px;
  animation-delay: 1.2s;
}

.block-5 {
  width: 60px;
  height: 40px;
  bottom: 120px;
  left: 70px;
  border-radius: 30px 30px 0 0;
  animation-delay: 1.6s;
}

.loading-text {
  text-align: center;
}

.progress-bar {
  width: 300px;
  height: 6px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-full);
  margin: var(--space-16) 0;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  width: 0%;
  border-radius: var(--radius-full);
  animation: loadingProgress 3.5s ease-out forwards;
}

.loading-status {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Particle System */
.particle-system {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
}

/* Navigation */
.floating-nav {
  position: fixed;
  top: var(--space-16);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: 95%;
  max-width: 1200px;
  background-color: rgba(var(--color-surface), 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-md);
  padding: var(--space-12) var(--space-16);
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  position: relative;
  perspective: var(--3d-perspective);
}

.logo-3d {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: 1px;
  color: var(--color-primary);
  transform-style: preserve-3d;
  animation: float 3s ease-in-out infinite;
}

.logo-shadow {
  position: absolute;
  bottom: -8px;
  left: 10%;
  width: 80%;
  height: 4px;
  border-radius: var(--radius-full);
  background-color: var(--shadow-color);
  filter: blur(4px);
  opacity: 0.5;
  animation: shadowPulse 3s ease-in-out infinite;
}

.nav-links {
  display: flex;
  gap: var(--space-20);
}

.nav-link {
  position: relative;
  padding: var(--space-8) var(--space-4);
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after, 
.nav-link.active::after {
  width: 100%;
}

.link-glow {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 10px;
  background-color: var(--glow-primary);
  border-radius: var(--radius-full);
  filter: blur(8px);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-link:hover .link-glow,
.nav-link.active .link-glow {
  opacity: 0.5;
}

.nav-controls {
  display: flex;
  gap: var(--space-12);
}

.control-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  border: none;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

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

.sun-moon-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FFD700, #FFA500);
  position: relative;
  transition: var(--transition-fast);
}

.sun-moon-icon::after {
  content: '';
  position: absolute;
  top: 0;
  right: -4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  transform: scale(0);
  transition: var(--transition-fast);
}

[data-color-scheme="dark"] .sun-moon-icon {
  background: linear-gradient(135deg, #CCCCCC, #E6E6E6);
}

[data-color-scheme="dark"] .sun-moon-icon::after {
  transform: scale(1);
}

.audio-icon {
  width: 20px;
  height: 20px;
  position: relative;
}

.audio-icon::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 0;
  width: 10px;
  height: 6px;
  background-color: var(--color-text);
  clip-path: polygon(0 0, 40% 0, 100% 50%, 40% 100%, 0 100%);
}

.audio-icon::after {
  content: '';
  position: absolute;
  top: 5px;
  right: 0;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-text);
  border-left: none;
  border-radius: 0 50% 50% 0;
}

.audio-off .audio-icon::after {
  display: none;
}

.audio-off .audio-icon::before {
  opacity: 0.5;
}

/* Hero Section */
.hero-section {
  position: relative;
  width: 100vw;
  height: 100vh;
  min-width: 100vw;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin:0;
  padding: 0; /* Remove any padding */
}


.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: orbPulse 8s infinite alternate;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #1FB8CD, #5D878F);
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, #FFC185, #D2BA4C);
  bottom: 10%;
  right: 15%;
  animation-delay: 2s;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: linear-gradient(135deg, #B4413C, #964325);
  top: 15%;
  right: 20%;
  animation-delay: 4s;
}

.hero-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  padding: 0 var(--space-16);
  z-index: 1;
  perspective: var(--3d-perspective);
}

.hero-text {
  flex: 1;
  max-width: 600px;
}

.hero-title {
  font-size: 4rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  margin-bottom: var(--space-16);
}

.hero-subtitle {
  position: relative;
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, #111 10%, #12b3b6 40%, #222 60%, #12b3b6 90%);
  background-size: 200% auto;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow:
    0 2px 16px #12b3b699,
    0 0 32px #111a1f88;
  filter: drop-shadow(0 0 6px #12b3b688);
  opacity: 1;
  overflow: hidden;
}

.hero-subtitle span {
  opacity: 0;
  filter: blur(4px); /* Lower blur for better readability */
  transform: translateY(32px) scale(0.98);
  display: inline-block;
  transition:
    opacity 0.7s cubic-bezier(.5,0,.2,1),
    filter 0.7s cubic-bezier(.5,0,.2,1),
    transform 0.7s cubic-bezier(.5,0,.2,1);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  will-change: opacity, filter, transform;
}

.hero-subtitle span.animated {
  opacity: 1;
  filter: blur(0);
  transform: translateY(0) scale(1.04);
  animation: metallicSweep 2.8s cubic-bezier(.4,0,.2,1) infinite alternate;
}

@keyframes metallicSweep {
  0% {
    background-position: 0% 50%;
    text-shadow: 0 0.1px 16px #12b3b699, 0 0 32px #111a1f88;
  }
  50% {
    background-position: 100% 50%;
    text-shadow: 0 0.1px 28px #12b3b6cc, 0 0 48px #12b3b6cc;
  }
  100% {
    background-position: 0% 50%;
    text-shadow: 0 0.1px 16px #12b3b699, 0 0 32px #111a1f88;
  }
}

/* Remove blue focus outline if any accidental focus occurs */
.hero-subtitle:focus,
.hero-subtitle span:focus {
  outline: none;
  box-shadow: none;
}



.hero-actions {
  display: flex;
  gap: var(--space-16);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 1s forwards 1s;
}

.hero-btn {
  position: relative;
  overflow: hidden;
}

.btn-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.btn-shimmer {
  position: absolute;
  top: -100%;
  left: -100%;
  width: 300%;
  height: 300%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(30deg);
  transition: var(--transition-fast);
}

.hero-btn:hover .btn-shimmer {
  top: -50%;
  left: -50%;
  transition: var(--transition-slow);
}


@media (max-width: 600px) {
  .hero-section {
    width: 90vw;
    height: calc(90vw * 1.2); /* 500:600 ratio = 1:1.2 */
    padding-top: 40px;
  }
}

.hero-3d-scene {
  width: 100%;
  height: 100vh;
  position: relative;
  perspective: var(--3d-perspective);
}
/*India-map-container*/

body {
  background: transparent; /* or rgba(0,0,0,0) if inside another container */
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
}
.hero-section,
#map-container {
  width: 100vw;
  height: 100vh;
  min-width: 100vw;
  min-height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
#map-container svg {
  width: 100vw;
  height: 100vh;
  display: block;
  position: absolute;
  object-fit: contain;
  top: 0; left: 0;
}



 



/* Optional: Hide scrollbars visually in all browsers */
#map-container {
  scrollbar-width: none; /* Firefox */
}
#map-container::-webkit-scrollbar {
  display: none;         /* Chrome, Safari, Opera */
}



#popup-menu {
  position: fixed;
  background: rgba(255, 255, 255, 0.15); /* translucent white */
  border-radius: 20px;
  padding: 24px 32px;
  color: #fff;
  min-width: 280px;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.25);
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
  transition: opacity 0.3s ease, transform 0.3s ease;
  /* Remove centering transform, position will be set dynamically */
  top: 0;
  left: 0;
  transform: translate(0, 0);
}

#popup-menu.active {
  opacity: 1;
  pointer-events: auto;
}

#popup-menu h2 {
  margin: 0 0 12px 0;
  font-weight: 600;
  font-size: 1.4em;
  text-align: center;
  color: #ffd700;
}

#popup-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#popup-menu li {
  margin: 10px 0;
  cursor: pointer;
  font-size: 1.1em;
  transition: color 0.2s ease, transform 0.3s ease;
}

#popup-menu li:hover {
  color: #fff;
  transform: scale(1.05) translateX(6px);
}

/* Sublist styles */
.sublist {
  margin-left: 18px;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.4s ease, transform 0.4s ease;
  transform: translateY(10px);
  pointer-events: none;
  color: #bbf7d0;
  font-size: 1em;
}

.sublist.active {
  max-height: 400px;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}


.sublist li {
  font-size: 1em;
  color: #bbf7d0;
  margin: 6px 0;
  transition: color 0.2s, transform 0.3s;
}

.sublist li:hover {
  color: #fff;
  transform: scale(1.05) translateX(6px);
}


/* 3D effect on map region hover (Tamil Nadu, Bihar, etc.) */
#INTN.state,
#INTN.Tamil\ Nadu,
#INBR.state,
#INBR.Bihar,
#INAN.state,
#TNAN.Andaman\and\Nicobar,
#INTG.state,
#INTG.Telangana,
#INAP.state,
#INAP.Andhra\Pradesh,
#INAR.state,
#INAR.Arunachal\Pradesh,
#INTAS.state,
#INAS.Assam,
#INCT.state,
#INCT.Chhattisgarh,
#INCH.state,
#INCH.Chandigarh,
#INDH.state,
#INDH.Dādra\and\Nagar\Haveli\and\Damān\and\Diu,
#INDL.state,
#INDL.Delhi,
#INGA.state,
#INGA.Goa,
#INGJ.state,
#INGJ.Gujarat,
#INHR.state,
#INHR.Haryana,
#INHP.state,
#INHP.Himachal\Pradesh,
#INJH.state,
#INJH.Jharkhand,
#INKA.state,
#INKA.Karnataka,
#INKL.state,
#INKL.Kerala,
#INMP.state,
#INMP.Madhya\Pradesh,
#INMH.state,
#INMH.Maharashtra,
#INMN.state,
#INMN.Manipur,
#INML.state,
#INML.Meghalaya,
#INTG.state,
#INMZ.Mizoram,
#INNL.state,
#INNL.Nagaland,
#INOR.state,
#INOR.Odisha,
#INPB.state,
#INPB.Punjab,
#INPY.state,
#INPY.Puducherry,
#INRJ.state,
#INRJ.Rajasthan,
#INTG.state,
#INSK.Sikkim,
#INTR.state,
#INTR.Tripura,
#INUT.state,
#INUT.Uttaranchal,
#INUP.state,
#INUP.Uttar\Pradesh,
#INWB.state,
#INWB.West\Bengal,
#INLD.state,
#INLD.Lakshadweep,
#INLA.state,
#INLA.Ladakh,
#INJK.state,
#INJK.Jammu\and\Kashmir


{
  transition: filter 0.3s, transform 0.3s;
  cursor: pointer;
}

#INTN.state:hover,
#INTN.Tamil\ Nadu:hover,
#INBR.state:hover,
#INBR.Bihar:hover
#INAN.state:hover,
#TNAN.Andaman\and\Nicobar:hover,
#INTG.state:hover,
#INTG.Telangana:hover,
#INAP.state:hover,
#INAP.Andhra\Pradesh:hover,
#INAR.state:hover,
#INAR.Arunachal\Pradesh:hover,
#INTAS.state:hover,
#INAS.Assam:hover,
#INCT.state:hover,
#INCT.Chhattisgarh:hover,
#INCH.state:hover,
#INCH.Chandigarh:hover,
#INDH.state:hover,
#INDH.Dādra\and\Nagar\Haveli\and\Damān\and\Diu:hover,
#INDL.state:hover,
#INDL.Delhi:hover,
#INGA.state:hover,
#INGA.Goa:hover,
#INGJ.state:hover,
#INGJ.Gujarat:hover,
#INHR.state:hover,
#INHR.Haryana:hover,
#INHP.state:hover,
#INHP.Himachal\Pradesh:hover,
#INJH.state:hover,
#INJH.Jharkhand:hover,
#INKA.state:hover,
#INKA.Karnataka:hover,
#INKL.state:hover,
#INKL.Kerala:hover,
#INMP.state:hover,
#INMP.Madhya\Pradesh:hover,
#INMH.state:hover,
#INMH.Maharashtra:hover,
#INMN.state:hover,
#INMN.Manipur:hover,
#INML.state:hover,
#INML.Meghalaya:hover,
#INTG.state:hover,
#INMZ.Mizoram:hover,
#INNL.state:hover,
#INNL.Nagaland:hover,
#INOR.state:hover,
#INOR.Odisha:hover,
#INPB.state:hover,
#INPB.Punjab:hover,
#INPY.state:hover,
#INPY.Puducherry:hover,
#INRJ.state:hover,
#INRJ.Rajasthan:hover,
#INTG.state:hover,
#INSK.Sikkim:hover,
#INTR.state:hover,
#INTR.Tripura:hover,
#INUT.state:hover,
#INUT.Uttaranchal:hover,
#INUP.state:hover,
#INUP.Uttar\Pradesh:hover,
#INWB.state:hover,
#INWB.West\Bengal:hover,
#INLD.state:hover,
#INLD.Lakshadweep:hover,
#INLA.state:hover,
#INLA.Ladakh:hover,
#INJK.state:hover,
#INJK.Jammu\and\Kashmir:hover {
  filter: drop-shadow(0 0 16px #5a0006) brightness(1.2);
  transform: scale(1.03) perspective(600px) rotateX(4deg) rotateZ(-2deg);
}



.scroll-indicator {
  position: absolute;
  bottom: var(--space-32);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  animation: fadeIn 1s forwards 1.5s;
 padding:0;
}

.scroll-line {
  width: 2px;
  height: 30px;
  background-color: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-surface);
  animation: scrollLine 2s infinite;
}

.scroll-text {
  margin-top: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  letter-spacing: 1px;
}
/*Explore More*/
:root {
  --parchment: #f9f6e7;
  --limestone: #a89f91;
  --bronze: #b08d57;
  --scroll: #ede3c6;
  --border: #bca87e;
  --shadow: 0 4px 24px 0 rgba(60, 45, 15, 0.13);
  --font: 'EB Garamond', serif;
}

.medieval-modal-section {
  max-width: 700px;
  margin: 2rem auto;
  font-family: var(--font);
  background: var(--parchment);
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 2px solid var(--border);
  overflow: hidden;
  transition: box-shadow 0.3s;
}

.modal-header {
  width: 100%;
  background: linear-gradient(90deg, var(--scroll) 60%, var(--limestone) 100%);
  color: #3b2f15;
  font-size: 1.5rem;
  font-family: var(--font);
  font-weight: 700;
  padding: 1.2rem 1.5rem;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  box-shadow: 0 2px 12px 0 rgba(176, 141, 87, 0.10);
  transition: background 0.3s;
  position: relative;
  outline: none;
}

.modal-header:hover, .modal-header:focus {
  background: linear-gradient(90deg, var(--scroll) 60%, var(--bronze) 100%);
  box-shadow: 0 4px 20px 0 rgba(176, 141, 87, 0.18);
}

.header-icon {
  width: 32px;
  height: 32px;
  display: inline-block;
  margin-right: 0.7rem;
  vertical-align: middle;
}

.scroll-icon {
  background: url('data:image/svg+xml;utf8,<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"><rect x="4" y="6" width="24" height="20" rx="4" fill="%23ede3c6" stroke="%23bca87e" stroke-width="2"/><rect x="8" y="10" width="16" height="12" rx="2" fill="none" stroke="%23a89f91" stroke-width="1"/></svg>') no-repeat center/contain;
  animation: scrollWobble 1.8s infinite;
}

@keyframes scrollWobble {
  0%, 100% { transform: rotate(-5deg);}
  50% { transform: rotate(7deg);}
}

.chevron-icon {
  background: url('data:image/svg+xml;utf8,<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"><polyline points="8 12 16 20 24 12" fill="none" stroke="%23bca87e" stroke-width="3" stroke-linecap="round"/></svg>') no-repeat center/contain;
  transition: transform 0.4s cubic-bezier(.65,.05,.36,1);
}

.modal-header[aria-expanded="true"] .chevron-icon {
  transform: rotate(180deg);
}

.modal-content {
  background: var(--parchment);
  border-top: 2px solid var(--border);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.7s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.5s;
  box-shadow: 0 2px 12px 0 rgba(176, 141, 87, 0.10) inset;
  will-change: max-height, opacity;
}

.modal-content.open {
  opacity: 1;
}

.materials-table {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding: 1.5rem;
}

.material-row {
  background: linear-gradient(90deg, #fffbe6 80%, #ede3c6 100%);
  border-radius: 12px;
  box-shadow: 0 2px 10px 0 rgba(176, 141, 87, 0.09);
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding: 1.2rem 1rem;
  transition: box-shadow 0.3s, transform 0.3s;
  position: relative;
  cursor: pointer;
  border: 1.5px solid var(--border);
}

.material-row:hover {
  box-shadow: 0 6px 24px 0 rgba(176, 141, 87, 0.18);
  transform: translateY(-2px) scale(1.015);
  border-color: var(--bronze);
}

.material-icon {
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  margin-top: 0.5rem;
}

.hammer-icon {
  background: url('data:image/svg+xml;utf8,<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg"><rect x="14" y="16" width="4" height="12" rx="1" fill="%23b08d57"/><rect x="10" y="10" width="12" height="6" rx="2" fill="%23a89f91" stroke="%23bca87e" stroke-width="1"/></svg>') no-repeat center/contain;
  animation: hammerSwing 1.3s infinite;
}

@keyframes hammerSwing {
  0%, 100% { transform: rotate(-8deg);}
  50% { transform: rotate(10deg);}
}

.material-info {
  flex: 1 1 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem;
}

.material-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bronze);
  font-family: var(--font);
  flex: 1 1 120px;
  min-width: 120px;
}

.material-thumb img {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  object-fit: cover;
  border: 2px solid var(--limestone);
  box-shadow: 0 2px 8px 0 rgba(176, 141, 87, 0.13);
  background: #fff;
  transition: box-shadow 0.3s, border-color 0.3s;
}

.material-row:hover .material-thumb img {
  border-color: var(--bronze);
  box-shadow: 0 4px 16px 0 rgba(176, 141, 87, 0.19);
}

.material-def {
  font-size: 1rem;
  color: #3b2f15;
  flex: 2 1 220px;
  min-width: 150px;
  font-family: var(--font);
  opacity: 0.88;
}

.details-btn {
  background: linear-gradient(90deg, var(--bronze) 60%, var(--limestone) 100%);
  color: #fffbe6;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  padding: 0.7rem 1.3rem;
  margin-left: auto;
  box-shadow: 0 2px 8px 0 rgba(176, 141, 87, 0.10);
  cursor: pointer;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
  outline: none;
  position: relative;
  overflow: hidden;
}

.details-btn:hover, .details-btn:focus {
  background: linear-gradient(90deg, var(--bronze) 40%, var(--scroll) 100%);
  color: var(--bronze);
  box-shadow: 0 4px 16px 0 rgba(176, 141, 87, 0.19);
}

.details-btn::after {
  content: '';
  display: block;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
  pointer-events: none;
}

.details-btn:active::after {
  width: 120%;
  height: 200%;
  transition: width 0.2s, height 0.2s;
}

@media (max-width: 700px) {
  .materials-table {
    padding: 1rem 0.4rem;
    gap: 0.7rem;
  }
  .material-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
    padding: 1rem 0.6rem;
  }
  .material-info {
    flex-direction: column;
    gap: 0.7rem;
    align-items: flex-start;
  }
  .material-name, .material-def {
    min-width: 0;
    width: 100%;
  }
  .details-btn {
    width: 100%;
    margin: 0.5rem 0 0 0;
  }
}

/* Monuments Section */
.monuments-section {
  padding: var(--space-32) var(--space-16);
  min-height: 100vh;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-32);
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-medium);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-8);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.section-subtitle {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: var(--space-16) auto 0;
}

.section-header.visible {
  opacity: 1;
  transform: translateY(0);
}

.sun-controls {
  max-width: 800px;
  margin: 0 auto var(--space-32);
  padding: var(--space-16);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-medium);
  transition-delay: 0.2s;
}

.sun-controls.visible {
  opacity: 1;
  transform: translateY(0);
}

.sun-slider-container {
  margin-bottom: var(--space-16);
}

.sun-slider {
  width: 100%;
  margin: var(--space-8) 0;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: linear-gradient(to right, var(--time-dawn), var(--time-noon), var(--time-dusk), var(--time-night));
  border-radius: var(--radius-full);
  outline: none;
}

.sun-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-surface);
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  transition: var(--transition-fast);
}

.sun-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.time-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.lighting-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sun-position {
  width: 120px;
  height: 60px;
  border-radius: 120px 120px 0 0;
  border: 1px solid var(--color-border);
  border-bottom: none;
  position: relative;
}

.sun-indicator {
  width: 16px;
  height: 16px;
  background: radial-gradient(circle, #FFD700, #FFA500);
  border-radius: 50%;
  position: absolute;
  bottom: 0;
  left: 52px;
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.7);
  transform-origin: bottom center;
  transform: rotate(90deg) translateY(-52px) rotate(-90deg);
  transition: transform var(--transition-medium);
}

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

.monuments-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-32);
  justify-content: center;
  margin-top: var(--space-32);
}

.monument-card {
  width: 350px;
  height: 500px;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: var(--transition-medium);
  opacity: 0;
  transform: translateY(50px);
  perspective: var(--3d-perspective);
}

.monument-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.monument-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.monument-3d-container {
  height: 250px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--time-noon), var(--color-background));
  transition: var(--transition-medium);
}

.monument-scene {
  width: 100%;
  height: 100%;
  perspective: var(--3d-perspective);
  display: flex;
  align-items: center;
  justify-content: center;
}

.monument-3d {
  width: 200px;
  height: 200px;
  position: relative;
  transform-style: preserve-3d;
  transform: rotateX(10deg) rotateY(20deg);
  transition: transform var(--transition-medium);
}

.monument-card:hover .monument-3d {
  transform: rotateX(15deg) rotateY(40deg);
}

.monument-shadow {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%) rotateX(90deg);
  width: 80%;
  height: 20px;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0) 70%);
  filter: blur(5px);
}

.monument-structure {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

/* Taj Mahal */
.dome-monument .monument-structure {
  transform-style: preserve-3d;
}

.dome-base-3d {
  width: 120px;
  height: 40px;
  background-color: var(--monument-white);
  position: absolute;
  bottom: 0;
  left: 40px;
  transform: translateZ(0);
}

.dome-main {
  width: 80px;
  height: 120px;
  position: absolute;
  bottom: 40px;
  left: 60px;
  transform-style: preserve-3d;
}

.dome-main::before {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  bottom: 40px;
  background-color: var(--monument-white);
  border-radius: 50% 50% 0 0;
}

.dome-main::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 40px;
  bottom: 0;
  background-color: var(--monument-white);
}

.minarets {
  position: absolute;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.minaret {
  width: 15px;
  height: 100px;
  position: absolute;
  background-color: var(--monument-white);
}

.minaret-1 {
  bottom: 0;
  left: 20px;
  transform: translateZ(20px);
}

.minaret-2 {
  bottom: 0;
  right: 20px;
  transform: translateZ(20px);
}

.minaret-3 {
  bottom: 0;
  left: 20px;
  transform: translateZ(-20px);
}

.minaret-4 {
  bottom: 0;
  right: 20px;
  transform: translateZ(-20px);
}

/* Red Fort */
.fort-monument .monument-structure {
  transform-style: preserve-3d;
}

.fort-walls {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.fort-wall-3d {
  position: absolute;
  background-color: var(--monument-red);
}

.wall-front {
  width: 160px;
  height: 80px;
  bottom: 0;
  left: 20px;
  transform: translateZ(40px);
}

.wall-side {
  width: 80px;
  height: 80px;
  bottom: 0;
  left: 20px;
  transform: rotateY(90deg) translateZ(20px);
}

.wall-back {
  width: 160px;
  height: 80px;
  bottom: 0;
  left: 20px;
  transform: translateZ(-40px);
}

.fort-towers {
  position: absolute;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.tower {
  width: 30px;
  height: 100px;
  position: absolute;
  background-color: var(--monument-red);
}

.tower-1 {
  bottom: 0;
  left: 20px;
  transform: translateZ(40px);
}

.tower-2 {
  bottom: 0;
  right: 20px;
  transform: translateZ(40px);
}

/* Qutub Minar */
.minaret-monument .monument-structure {
  transform-style: preserve-3d;
}

.minaret-tower {
  position: absolute;
  width: 40px;
  height: 180px;
  bottom: 0;
  left: 80px;
  transform-style: preserve-3d;
}

.minaret-section {
  position: absolute;
  background-color: var(--monument-red);
  left: 0;
}

.section-1 {
  width: 40px;
  height: 40px;
  bottom: 0;
}

.section-2 {
  width: 35px;
  height: 35px;
  bottom: 40px;
  left: 2.5px;
}

.section-3 {
  width: 30px;
  height: 35px;
  bottom: 75px;
  left: 5px;
}

.section-4 {
  width: 25px;
  height: 35px;
  bottom: 110px;
  left: 7.5px;
}

.section-5 {
  width: 20px;
  height: 30px;
  bottom: 145px;
  left: 10px;
  border-radius: 50% 50% 0 0;
}

.minaret-balconies {
  position: absolute;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.balcony {
  position: absolute;
  width: 50px;
  height: 5px;
  left: 75px;
  background-color: var(--monument-white);
  border-radius: 2px;
}

.balcony-1 {
  bottom: 40px;
}

.balcony-2 {
  bottom: 75px;
}

.balcony-3 {
  bottom: 110px;
}

.monument-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

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

.monument-type {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-12);
}

.monument-description {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.monument-stats {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
  flex-wrap: wrap;
}

.stat {
  flex: 1;
  min-width: 70px;
  background-color: var(--color-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.stat-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.explore-btn {
  width: 100%;
}

/* Games Section */
.games-section {
  padding: var(--space-32) var(--space-16);
  min-height: 100vh;
  position: relative;
}

.games-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-32);
  justify-content: center;
  margin-top: var(--space-32);
}

.game-card {
  width: 350px;
  height: 450px;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: var(--transition-medium);
  opacity: 0;
  transform: translateY(50px);
}

.game-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.game-interface {
    display: none;
    /* other styles */
}


.game-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.game-preview {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.game-3d-scene {
  width: 100%;
  height: 100%;
  perspective: var(--3d-perspective);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Architect Game Elements */
.building-blocks {
  display: flex;
  gap: var(--space-16);
  transform-style: preserve-3d;
  animation: rotateBlocks 10s infinite linear;
}

.block {
  width: 50px;
  height: 30px;
  transform-style: preserve-3d;
  position: relative;
}

.block::before,
.block::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
}

.block::before {
  width: 100%;
  height: 100%;
  transform: translateZ(15px);
}

.block::after {
  width: 30px;
  height: 100%;
  transform: rotateY(90deg) translateZ(-15px);
}

.block-stone::before,
.block-stone::after {
  background-color: var(--monument-red);
}

.block-marble::before,
.block-marble::after {
  background-color: var(--monument-white);
}

.block-granite::before,
.block-granite::after {
  background-color: var(--monument-grey);
}

.construction-grid {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, rgba(var(--color-primary-rgb), 0) 0%, rgba(var(--color-primary-rgb), 0.5) 50%, rgba(var(--color-primary-rgb), 0) 100%);
}

.construction-grid::before,
.construction-grid::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 80px;
}

.construction-grid::before {
  bottom: 0;
  background: repeating-linear-gradient(
    to right,
    rgba(var(--color-primary-rgb), 0.1) 0px,
    rgba(var(--color-primary-rgb), 0.1) 1px,
    transparent 1px,
    transparent 20px
  );
}

.construction-grid::after {
  bottom: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(var(--color-primary-rgb), 0.1) 0px,
    rgba(var(--color-primary-rgb), 0.1) 1px,
    transparent 1px,
    transparent 20px
  );
}

/* Timeline Game Elements */
.time-portal {
  position: relative;
  width: 100%;
  height: 100%;
  perspective: var(--3d-perspective);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portal-rings {
  position: relative;
  width: 150px;
  height: 150px;
  transform-style: preserve-3d;
}

.ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 4px solid var(--color-primary);
  transform: translate(-50%, -50%) rotateX(70deg);
}

.ring-1 {
  width: 150px;
  height: 150px;
  opacity: 0.3;
  animation: pulsateRing 3s infinite;
}

.ring-2 {
  width: 120px;
  height: 120px;
  opacity: 0.5;
  animation: pulsateRing 3s infinite 0.5s;
}

.ring-3 {
  width: 90px;
  height: 90px;
  opacity: 0.7;
  animation: pulsateRing 3s infinite 1s;
}

.historical-scenes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.scene {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-position: center;
  background-size: cover;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.scene.ancient {
  opacity: 0.2;
}

/* Physics Game Elements */
.physics-demo {
  position: relative;
  width: 100%;
  height: 100%;
  perspective: var(--3d-perspective);
}

.stress-visualization {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.stress-lines {
  position: absolute;
  width: 150px;
  height: 100px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: repeating-linear-gradient(
    135deg,
    rgba(var(--color-error-rgb), 0) 0px,
    rgba(var(--color-error-rgb), 0) 5px,
    rgba(var(--color-error-rgb), 0.2) 5px,
    rgba(var(--color-error-rgb), 0.2) 10px
  );
  opacity: 0;
  animation: pulseOpacity 3s infinite;
}

.force-arrows {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

.force-arrows::before,
.force-arrows::after {
  content: '';
  position: absolute;
  width: 50px;
  height: 10px;
  background-color: rgba(var(--color-warning-rgb), 0.7);
  top: 50%;
  clip-path: polygon(0 30%, 80% 30%, 80% 0, 100% 50%, 80% 100%, 80% 70%, 0 70%);
  animation: moveArrow 3s infinite;
}

.force-arrows::before {
  left: 20%;
  transform: translateY(-50%);
}

.force-arrows::after {
  right: 20%;
  transform: translateY(-50%) rotateY(180deg);
  animation-delay: 1.5s;
}

.structure-test {
  position: absolute;
  width: 80px;
  height: 120px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.test-monument {
  width: 100%;
  height: 100%;
  background-color: var(--monument-red);
  clip-path: polygon(0 100%, 20% 100%, 20% 40%, 40% 40%, 40% 100%, 60% 100%, 60% 40%, 80% 40%, 80% 100%, 100% 100%, 100% 0, 0 0);
  transform-origin: center bottom;
  animation: wobbleStructure 5s infinite;
}

.load-indicator {
  position: absolute;
  width: 120px;
  height: 20px;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(var(--color-error-rgb), 0.2);
  border-radius: var(--radius-sm);
}

.load-indicator::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 70%;
  background-color: rgba(var(--color-error-rgb), 0.7);
  border-radius: var(--radius-sm);
  animation: loadIncrease 5s infinite;
}

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

.game-info h3 {
  margin-bottom: var(--space-8);
}

.game-info p {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.game-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

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

.play-btn {
  width: 100%;
}

/* Game Interface */
.game-interface {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 1200px;
  height: 80vh;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.game-interface.active {
  opacity: 1;
  visibility: visible;
}

.game-header {
  display: flex;
  align-items: center;
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

.game-header h3 {
  flex: 1;
}

.game-progress {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-right: var(--space-16);
}

.game-progress .progress-bar {
  width: 200px;
  margin: 0;
}

.progress-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.close-game {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  padding: 0;
  border-radius: 50%;
}

.game-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.game-viewport {
  flex: 3;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-card-border-inner);
}

.construction-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--color-background), rgba(var(--color-text-rgb), 0.05));
}

.build-grid {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(var(--color-primary-rgb), 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(var(--color-primary-rgb), 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  transform-origin: center;
  transform: rotateX(60deg);
  transform-style: preserve-3d;
}

.placed-blocks {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  perspective: var(--3d-perspective);
}

.game-controls {
  height: 120px;
  padding: var(--space-16);
  display: flex;
  gap: var(--space-16);
  border-top: 1px solid var(--color-card-border-inner);
}

.material-palette {
  display: flex;
  gap: var(--space-12);
}

.material-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  cursor: pointer;
  opacity: 0.6;
  transition: var(--transition-fast);
}

.material-option.active {
  opacity: 1;
}

.material-option:hover {
  opacity: 0.8;
}

.material-preview {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.stone-material {
  background-color: var(--monument-red);
}

.marble-material {
  background-color: var(--monument-white);
}

.granite-material {
  background-color: var(--monument-grey);
}

.material-option span {
  font-size: var(--font-size-xs);
}

.build-tools {
  display: flex;
  gap: var(--space-8);
}

.tool-btn {
  padding: var(--space-8) var(--space-12);
  background-color: var(--color-secondary);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.tool-btn:hover:not(.active) {
  background-color: var(--color-secondary-hover);
}

.game-sidebar {
  flex: 1;
  padding: var(--space-16);
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.challenge-info {
  margin-bottom: var(--space-16);
}

.challenge-info h4 {
  margin-bottom: var(--space-8);
}

.stability-meter {
  margin-bottom: var(--space-16);
}

.stability-gauge {
  height: 12px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-full);
  margin: var(--space-8) 0;
  overflow: hidden;
}

.gauge-fill {
  height: 100%;
  width: 85%;
  background: linear-gradient(to right, var(--color-error), var(--color-warning), var(--color-success));
  border-radius: var(--radius-full);
}

.stability-text {
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

.game-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

body {
  background: transparent; /* or rgba(0,0,0,0) if inside another container */
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
}
#popup-menu {
 position: fixed;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  padding: 24px 32px;
  color: #fff;
  min-width: 280px;
  max-width: 380px;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.25);
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
  transition: opacity 0.3s ease, transform 0.3s ease;
  top: 0;
  left: 0;
  transform: translate(0, 0);
  max-height: 70vh;      /* This is key */
  overflow-y: auto;      /* This is key */
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

#popup-menu.active {
  opacity: 1;
  pointer-events: auto;
}

#popup-menu h2 {
  margin: 0 0 12px 0;
  font-weight: 600;
  font-size: 1.4em;
  text-align: center;
  color: #ffd700;
}

/* Make the UL fill the available space and be scrollable if needed */
#popup-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
  min-height: 0; /*