:root {
  --saudi-green: #006C35;
  --saudi-green-soft: rgba(0, 108, 53, 0.08);
  --saudi-gold: #C9A961;
  --saudi-gold-soft: rgba(201, 169, 97, 0.12);
  --ink: #0a0a0a;
  --ink-soft: #2a2a2a;
  --muted: #6b6b6b;
  --line: #ececec;
  --bg: #ffffff;
  --serif: "Cormorant Garamond", "EB Garamond", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --serif-ar: "Amiri", "Noto Naskh Arabic", "Segoe UI", Tahoma, serif;
  --sans-ar: "Tajawal", "IBM Plex Sans Arabic", "Segoe UI", Tahoma, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

html[dir="rtl"] body { font-family: var(--sans-ar); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ====== Particle canvas — fixed full-viewport behind everything ====== */
#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* ====== Header ====== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2.5rem;
  mix-blend-mode: difference;
  color: #fff;
}

.logo {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.logo .accent { color: var(--saudi-green); }

.header-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lang-toggle, .audio-toggle {
  background: none;
  border: 1px solid currentColor;
  color: inherit;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: background 0.3s ease, color 0.3s ease;
}
.lang-toggle:hover, .audio-toggle:hover {
  background: currentColor;
  color: var(--bg);
  mix-blend-mode: normal;
}

.audio-toggle .icon { display: inline-block; width: 14px; }
.audio-toggle.is-on .icon::before { content: "🔊"; }
.audio-toggle:not(.is-on) .icon::before { content: "🔇"; }

/* ====== Hero ====== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 2.5rem;
  z-index: 2;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--saudi-green);
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
}

html[dir="rtl"] .eyebrow { letter-spacing: 0.1em; }

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.5rem, 7vw, 6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

html[dir="rtl"] .hero h1 {
  font-family: var(--serif-ar);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0;
}

.hero h1 .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px);
}

.hero h1 em {
  font-style: italic;
  color: var(--saudi-green);
}

html[dir="rtl"] .hero h1 em { font-style: normal; }

.hero .lede {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  color: var(--muted);
  max-width: 580px;
  margin: 0 auto 3rem;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(20px);
}

.cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.25rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.cta-primary {
  background: var(--saudi-green);
  color: #fff;
  box-shadow: 0 10px 40px rgba(0, 108, 53, 0.25);
}

.cta-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 50px rgba(0, 108, 53, 0.35);
}

.cta-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.cta-secondary:hover {
  background: var(--ink);
  color: #fff;
}

/* ====== Scroll indicator ====== */
.scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  animation: fadeIn 1s ease 2.5s forwards;
}

.scroll-cue::after {
  content: "";
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--ink) 0%, transparent 100%);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes fadeIn { to { opacity: 0.7; } }
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ====== Spacer for next stage's content ====== */
.next-stage-placeholder {
  position: relative;
  z-index: 2;
  background: #fff;
  padding: 8rem 2.5rem;
  text-align: center;
  border-top: 1px solid var(--line);
}

.next-stage-placeholder p {
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--muted);
  font-style: italic;
}

html[dir="rtl"] .next-stage-placeholder p {
  font-family: var(--serif-ar);
  font-style: normal;
}

/* ====== Reduced motion ====== */
@media (prefers-reduced-motion: reduce) {
  #particle-canvas { display: none; }
  .hero h1 .word, .eyebrow, .hero .lede, .cta-row {
    opacity: 1;
    transform: none;
  }
  .scroll-cue::after { animation: none; }
}

/* ====== Mobile ====== */
@media (max-width: 768px) {
  .site-header { padding: 1rem 1.25rem; }
  .header-controls { gap: 0.75rem; font-size: 0.7rem; }
  .lang-toggle, .audio-toggle { padding: 0.4rem 0.75rem; }
  .hero { padding: 0 1.5rem; }
  .hero h1 { margin-bottom: 1.5rem; }
  .hero .lede { margin-bottom: 2rem; }
  .cta-row { flex-direction: column; align-items: stretch; }
  .cta { justify-content: center; }
}