/* ============================================
   style.css - Enhanced: Variables, Reset, Base & Utilities
   ============================================ */

/* --------------------------------------------
   1. CSS Variables (Design Tokens)
   -------------------------------------------- */
:root {
  /* Colors - Light Theme Base */
  --color-ink: #1a231f;
  --color-ink-soft: #2d3a35;
  --color-muted: #5a6b64;
  --color-muted-light: #8f9c96;
  --color-paper: #ece8e0;
  --color-card: #f5f2eb;
  --color-line: #cdc5b8;
  --color-border: #bfb6a6;

  /* Semantic Colors */
  --color-primary: #0b5e56;
  --color-primary-light: #0f7a70;
  --color-primary-dark: #083e38;
  --color-primary-soft: #c8e6de;

  --color-accent: #1565c0;
  --color-accent-light: #1976d2;
  --color-accent-dark: #0d47a1;
  --color-accent-soft: #b3d7f5;

  /* Feedback Colors */
  --color-success: #1b6b31;
  --color-success-soft: #d4edda;
  --color-warning: #b9772e;
  --color-warning-soft: #fce4c8;
  --color-error: #c73a2b;
  --color-error-soft: #f5d0cc;
  --color-info: #1565c0;
  --color-info-soft: #d0e3f7;

  /* Shadows - Layered System */
  --shadow-xs: 0 0.25rem 0.75rem rgba(23, 32, 29, 0.08);
  --shadow-sm: 0 0.75rem 1.5rem rgba(23, 32, 29, 0.10);
  --shadow-md: 0 1.5rem 2.5rem rgba(23, 32, 29, 0.14);
  --shadow-lg: 0 2rem 4rem rgba(23, 32, 29, 0.18);
  --shadow-xl: 0 3rem 6rem rgba(23, 32, 29, 0.22);
  --shadow-small: var(--shadow-sm);
  --shadow-soft: var(--shadow-md);

  /* Border Radius - Consistent Scale */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.75rem;
  --radius-xl: 2.5rem;
  --radius-pill: 9999px;

  /* Typography - Fluid Scale with clamp for responsive sizing */
  --font-body: "Vazirmatn", "Noto Sans Arabic", system-ui, -apple-system, sans-serif;
  --font-display: Georgia, "Times New Roman", ui-serif, serif;
  --font-mono: "SF Mono", "Cascadia Code", monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-md: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-lg: clamp(1.25rem, 1.125rem + 0.625vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.375rem + 0.625vw, 1.875rem);
  --text-2xl: clamp(1.875rem, 1.625rem + 1.25vw, 2.25rem);
  --text-3xl: clamp(2.25rem, 1.875rem + 1.875vw, 3rem);
  --text-4xl: clamp(3rem, 2.25rem + 3.75vw, 4rem);

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  /* Spacing - 8px base grid */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-size: min(100% - var(--space-8), 1180px);
  --container-narrow: min(100% - var(--space-8), 760px);
  --container-wide: min(100% - var(--space-8), 1400px);

  /* Easing Curves */
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-sharp: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Animation & Transitions */
  --transition-fast: 150ms var(--ease-smooth);
  --transition-smooth: 260ms var(--ease-smooth);
  --transition-slow: 400ms var(--ease-smooth);

  /* Z-index layers */
  --z-negative: -1;
  --z-elevate: 1;
  --z-dropdown: 10;
  --z-sticky: 50;
  --z-popover: 80;
  --z-modal: 100;
  --z-tooltip: 200;
}

/* Dark Theme Variables */
html[data-theme="dark"] {
  --color-ink: #f4efe5;
  --color-ink-soft: #e5ddd0;
  --color-muted: #8f9c96;
  --color-muted-light: #66736d;
  --color-paper: #1a1a1a;
  --color-card: #2a2a2a;
  --color-line: #404040;
  --color-border: #333333;

  /* Semantic Colors - Keep similar for dark theme */
  --color-primary: #0f5f59;
  --color-primary-light: #1a8a82;
  --color-primary-dark: #0a4540;
  --color-primary-soft: #d5ebe5;

  --color-accent: #1976d2;
  --color-accent-light: #42a5f5;
  --color-accent-dark: #0d47a1;
  --color-accent-soft: #bbdefb;

  /* Feedback Colors */
  --color-success: #2b7a3e;
  --color-success-soft: #e0f2e4;
  --color-warning: #c97e32;
  --color-warning-soft: #fdf0e0;
  --color-error: #c73a2b;
  --color-error-soft: #fbe9e7;
  --color-info: #2b6f9e;
  --color-info-soft: #e1f0fa;

  /* Shadows - Darker for dark theme */
  --shadow-xs: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.4);
  --shadow-md: 0 1.5rem 2.5rem rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 2rem 4rem rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 3rem 6rem rgba(0, 0, 0, 0.7);
  --shadow-small: var(--shadow-sm);
  --shadow-soft: var(--shadow-md);

  color-scheme: dark;
}

/* Dark Theme - System preference fallback only when no explicit theme is set */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-ink: #f4efe5;
    --color-ink-soft: #e5ddd0;
    --color-muted: #8f9c96;
    --color-muted-light: #66736d;
    --color-paper: #1a1a1a;
    --color-card: #2a2a2a;
    --color-line: #404040;
    --color-border: #333333;

    --color-primary: #0f5f59;
    --color-primary-light: #1a8a82;
    --color-primary-dark: #0a4540;
    --color-primary-soft: #d5ebe5;

    --color-accent: #1976d2;
    --color-accent-light: #42a5f5;
    --color-accent-dark: #0d47a1;
    --color-accent-soft: #bbdefb;

    --color-success: #2b7a3e;
    --color-success-soft: #e0f2e4;
    --color-warning: #c97e32;
    --color-warning-soft: #fdf0e0;
    --color-error: #c73a2b;
    --color-error-soft: #fbe9e7;
    --color-info: #2b6f9e;
    --color-info-soft: #e1f0fa;

    --shadow-xs: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.4);
    --shadow-md: 0 1.5rem 2.5rem rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 2rem 4rem rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 3rem 6rem rgba(0, 0, 0, 0.7);
    --shadow-small: var(--shadow-sm);
    --shadow-soft: var(--shadow-md);

    color-scheme: dark;
  }
}

html[data-theme="light"] {
  --color-ink: #1a231f;
  --color-ink-soft: #2d3a35;
  --color-muted: #5a6b64;
  --color-muted-light: #8f9c96;
  --color-paper: #ece8e0;
  --color-card: #f5f2eb;
  --color-line: #cdc5b8;
  --color-border: #bfb6a6;

  --color-primary: #0b5e56;
  --color-primary-light: #0f7a70;
  --color-primary-dark: #083e38;
  --color-primary-soft: #c8e6de;

  --color-accent: #1565c0;
  --color-accent-light: #1976d2;
  --color-accent-dark: #0d47a1;
  --color-accent-soft: #b3d7f5;

  --color-success: #1b6b31;
  --color-success-soft: #d4edda;
  --color-warning: #b9772e;
  --color-warning-soft: #fce4c8;
  --color-error: #c73a2b;
  --color-error-soft: #f5d0cc;
  --color-info: #1565c0;
  --color-info-soft: #d0e3f7;

  --shadow-xs: 0 0.25rem 0.75rem rgba(23, 32, 29, 0.08);
  --shadow-sm: 0 0.75rem 1.5rem rgba(23, 32, 29, 0.10);
  --shadow-md: 0 1.5rem 2.5rem rgba(23, 32, 29, 0.14);
  --shadow-lg: 0 2rem 4rem rgba(23, 32, 29, 0.18);
  --shadow-xl: 0 3rem 6rem rgba(23, 32, 29, 0.22);

  --shadow-small: var(--shadow-sm);
  --shadow-soft: var(--shadow-md);

  color-scheme: light;
}

/* --------------------------------------------
   2. Modern Reset & Base Styles
   -------------------------------------------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Improved focus styling for better accessibility */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* But focus outline shouldn't be hidden when using mouse */
*:focus:not(:focus-visible) {
  outline: none;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16); /* Prevents content from hiding under fixed headers */
  -webkit-text-size-adjust: 100%; /* Prevent font scaling in landscape iOS */
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

body {
  min-width: 320px;
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-ink);
  line-height: var(--leading-relaxed);
  background: linear-gradient(135deg, var(--color-paper), var(--color-card));
  background-attachment: fixed;
  transition:
    color var(--transition-smooth),
    background var(--transition-smooth);
}

/* Cursor-following gradient glow */
body::before {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: var(--z-negative);
  background-image:
    radial-gradient(circle at 10% 10%, color-mix(in srgb, var(--color-accent-soft), transparent 15%), transparent 24rem),
    radial-gradient(circle at 90% 5%, color-mix(in srgb, var(--color-primary-soft), transparent 12%), transparent 26rem),
    radial-gradient(circle at 45% 55%, color-mix(in srgb, var(--color-accent-soft), transparent 60%), transparent 22rem),
    radial-gradient(circle at 75% 70%, color-mix(in srgb, var(--color-primary-soft), transparent 55%), transparent 20rem);
  content: "";
  opacity: 0.7;
  pointer-events: none;
}

/* Mouse glow overlay — updated via JS */
#cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: calc(var(--z-negative) + 0);
  pointer-events: none;
  background: radial-gradient(
    600px circle at var(--cursor-x, 50%) var(--cursor-y, 50%),
    color-mix(in srgb, var(--color-primary-light), transparent 65%),
    color-mix(in srgb, var(--color-accent-light), transparent 75%),
    transparent 50%
  );
  transition: background 150ms ease;
}

body::after {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: calc(var(--z-negative) + 1);
  background-image: radial-gradient(circle, color-mix(in srgb, var(--color-muted), transparent 85%) 1px, transparent 1px);
  background-size: 36px 36px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 80%);
  pointer-events: none;
}

body[data-page] {
  isolation: isolate;
}

body[data-page] .main-content::before {
  position: fixed;
  inset: 12% auto auto 4%;
  z-index: var(--z-negative);
  width: clamp(12rem, 25vw, 24rem);
  height: clamp(12rem, 25vw, 24rem);
  background:
    conic-gradient(from 140deg, rgba(0, 255, 136, 0.15), rgba(0, 212, 255, 0.12), transparent 72%);
  border-radius: 38% 62% 54% 46%;
  filter: blur(2px);
  opacity: 0.7;
  animation: material-blob 16s ease-in-out infinite alternate;
  content: "";
  pointer-events: none;
}

/* Parallax blob — animated via JS scroll */
#parallax-blob {
  position: fixed;
  z-index: calc(var(--z-negative) + 1);
  width: clamp(16rem, 30vw, 30rem);
  height: clamp(16rem, 30vw, 30rem);
  background:
    conic-gradient(from 240deg, rgba(0, 212, 255, 0.12), rgba(0, 255, 136, 0.08), transparent 70%);
  border-radius: 42% 58% 65% 35%;
  filter: blur(60px);
  pointer-events: none;
  inset-block-start: 20%;
  inset-inline-end: -8%;
  will-change: transform;
  transition: transform 0.1s linear;
}

/* Media elements */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Ensure SVGs inherits color */
svg:not([fill]) {
  fill: currentColor;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:not([class]) {
  text-decoration: underline;
  text-underline-offset: 0.2em;
  color: var(--color-primary);
}

a:not([class]):hover {
  color: var(--color-accent);
}

/* Form elements - more resilient */
button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
  border: none;
  background: transparent;
}

button {
  cursor: pointer;
  background: none;
}

/* Remove inner spin buttons from number inputs */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

/* List styles */
ul,
ol {
  list-style: none;
}

/* Text selection */
::selection {
  color: var(--color-card);
  background: var(--color-primary);
}

/* Custom scrollbar - more polished */
::-webkit-scrollbar {
  width: 0.75rem;
  height: 0.75rem;
}

::-webkit-scrollbar-track {
  background: var(--color-paper);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-soft);
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary-soft) var(--color-paper);
}

/* --------------------------------------------
   3. Print Styles
   -------------------------------------------- */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body {
    background: white;
    font-size: 12pt;
    line-height: 1.4;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  a[href^="#"]::after,
  a[href^="javascript"]::after {
    content: "";
  }

  img,
  svg {
    max-width: 100% !important;
  }

  .no-print,
  .skip-link,
  .theme-toggle,
  nav:not(.print-friendly) {
    display: none !important;
  }
}

/* --------------------------------------------
   4. Reduced Motion Support
   -------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------
   5. Utility Classes
   -------------------------------------------- */

/* Typography utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-balance { text-wrap: balance; }
.text-pretty { text-wrap: pretty; }

/* Colors */
.color-ink { color: var(--color-ink); }
.color-muted { color: var(--color-muted); }
.color-primary { color: var(--color-primary); }
.color-accent { color: var(--color-accent); }
.bg-paper { background-color: var(--color-paper); }
.bg-card { background-color: var(--color-card); }

/* Spacing utilities (margin) */
.m-0 { margin: 0; }
.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

/* Padding utilities */
.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }

.px-2 { padding-left: var(--space-2); padding-right: var(--space-2); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }

/* Layout utilities */
.container {
  width: var(--container-size);
  margin-left: auto;
  margin-right: auto;
}

.container-narrow {
  width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
}

.container-wide {
  width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
}

/* Flex utilities */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Grid utilities */
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Responsive grid */
@media (max-width: 768px) {
  .grid-cols-2\:mobile\:1 { grid-template-columns: 1fr; }
  .grid-cols-3\:mobile\:1 { grid-template-columns: 1fr; }
  .grid-cols-4\:mobile\:1 { grid-template-columns: 1fr; }
}

/* Hide utilities */
.visually-hidden:not(:focus):not(:active) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* Responsive utilities */
@media (max-width: 640px) {
  .sm\:hidden { display: none; }
  .sm\:block { display: block; }
  .sm\:flex-col { flex-direction: column; }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .md\:hidden { display: none; }
}

@media (min-width: 1025px) {
  .lg\:hidden { display: none; }
}

/* --------------------------------------------
   6. Accessibility & Navigation
   -------------------------------------------- */
.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: var(--z-popover);
  padding: var(--space-2) var(--space-4);
  color: var(--color-card);
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transform: translateY(calc(-100% - var(--space-4)));
  transition: transform var(--transition-smooth);
  text-decoration: none;
  font-weight: 500;
}

.skip-link:focus {
  transform: translateY(0);
}

/* Main content */
.main-content {
  min-height: 70vh;
  position: relative;
  z-index: var(--z-elevate);
}

/* --------------------------------------------
   7. Component Styles
   -------------------------------------------- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: 500;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  border: 1px solid var(--color-accent);
}

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

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

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

/* Cards */
.card {
  position: relative;
  overflow: hidden;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* Form elements */
.form-group {
  margin-bottom: var(--space-4);
}

label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--color-ink);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

/* --------------------------------------------
   8. Layout Sections
   -------------------------------------------- */
.section-shell,
.page-hero {
  width: var(--container-size);
  margin: 0 auto;
  padding: var(--space-20) 0;
  transform-style: preserve-3d;
  perspective: 1200px;
  transform:
    perspective(1200px)
    translateZ(var(--scroll-z, 0))
    rotateX(var(--scroll-tilt, 0deg));
  will-change: transform;
}

.section-shell--sm {
  padding: var(--space-12) 0;
}

.section-shell--lg {
  padding: var(--space-24) 0;
}

/* Section heading */
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  position: relative;
}

.section-heading > div {
  position: relative;
}

.section-heading > div::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  inset-inline-start: 0;
  width: 4rem;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary), var(--color-primary-light), transparent);
  border-radius: 999px;
}

.section-heading[style*="text-align: center"] > div::after,
.section-heading.text-center > div::after,
html[dir="rtl"] .section-heading.text-center > div::after,
.section-heading:has(.text-center) > div::after {
  inset-inline-start: 50%;
  transform: translateX(-50%);
}

html[dir="rtl"] .section-heading > div::after {
  inset-inline-start: auto;
  inset-inline-end: 0;
  background: linear-gradient(270deg, var(--color-accent), var(--color-primary), var(--color-primary-light), transparent);
}

.section-kicker {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-wrap: balance;
}

.section-title {
  max-width: 760px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-ink);
  text-wrap: balance;
}

.section-title--large {
  font-size: clamp(var(--text-3xl), 9vw, 7rem);
}

.section-text {
  max-width: 680px;
  margin: var(--space-4) 0 0;
  font-size: clamp(var(--text-md), 2vw, var(--text-xl));
  color: var(--color-muted);
  text-wrap: pretty;
}

/* Hero */
.page-hero {
  position: relative;
  display: grid;
  align-content: center;
  min-height: 28rem;
  overflow: hidden;
  padding-inline: clamp(1.25rem, 4vw, 3.5rem);
  border: 1px solid color-mix(in srgb, var(--color-line), transparent 18%);
  border-radius: clamp(1.5rem, 4vw, var(--radius-xl));
  background:
    radial-gradient(circle at 12% 12%, color-mix(in srgb, var(--color-accent-soft), transparent 18%), transparent 18rem),
    linear-gradient(135deg, color-mix(in srgb, var(--color-card), transparent 5%), color-mix(in srgb, rgba(0, 212, 255, 0.08), var(--color-card) 78%));
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  transform-style: preserve-3d;
  perspective: 1200px;
}

.page-hero::after {
  position: absolute;
  inset-block: auto -35%;
  inset-inline-end: -8%;
  width: clamp(12rem, 28vw, 24rem);
  aspect-ratio: 1;
  background-image: radial-gradient(circle, color-mix(in srgb, var(--color-accent-light), transparent 60%) 2px, transparent 2px);
  background-size: 24px 24px;
  border-radius: 50%;
  content: "";
  pointer-events: none;
  transform: translateZ(-20px);
}

/* 3D depth layer for page-hero content */
.page-hero > * {
  transform-style: preserve-3d;
}

.page-hero > .section-title {
  transform: translateZ(15px);
}

.page-hero > .section-text {
  transform: translateZ(5px);
}

/* Depth layers for 3D space (use via data-depth="1..5") */
[data-depth="1"] { transform: translateZ(5px); }
[data-depth="2"] { transform: translateZ(15px); }
[data-depth="3"] { transform: translateZ(30px); }
[data-depth="4"] { transform: translateZ(50px); }
[data-depth="5"] { transform: translateZ(80px); }

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-line), transparent);
  margin: var(--space-8) 0;
}

/* Wave dividers between sections */
.section-wave {
  position: relative;
  width: 100%;
  height: 4rem;
  overflow: hidden;
  pointer-events: none;
}

.section-wave svg {
  position: absolute;
  bottom: 0;
  width: 200%;
  height: 100%;
  fill: var(--color-card);
  opacity: 0.4;
  animation: wave-drift 20s linear infinite;
}

.section-wave svg:nth-child(2) {
  bottom: -0.25rem;
  opacity: 0.2;
  animation-direction: reverse;
  animation-duration: 28s;
}

@keyframes wave-drift {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}