/* ============================================================
   TAFSSIR ROUY'IA — Système visuel néon-oniric
   ============================================================ */

:root {
  /* Profondeurs */
  --void: #05030f;
  --abyss: #0a081c;
  --night: #110d24;
  --shadow: #1a1530;

  /* Néons */
  --violet: #7c3aed;
  --violet-soft: #a78bfa;
  --magenta: #ec4899;
  --magenta-soft: #f9a8d4;
  --cyan: #06b6d4;
  --cyan-soft: #67e8f9;
  --crimson: #f43f5e;
  --crimson-soft: #fda4af;
  --amber: #fbbf24;

  /* Texte */
  --ghost: #f5f3ff;
  --pale: #d8d4f0;
  --muted: #8d88a8;
  --dim: #56536e;

  /* Lignes & bordures */
  --line: rgba(167, 139, 250, 0.14);
  --line-bright: rgba(167, 139, 250, 0.32);
  --glass: rgba(124, 58, 237, 0.06);
  --glass-bright: rgba(124, 58, 237, 0.14);

  /* Gradients signature */
  --grad-violet-magenta: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
  --grad-magenta-crimson: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
  --grad-cyan-violet: linear-gradient(135deg, #06b6d4 0%, #7c3aed 100%);
  --grad-aurora: linear-gradient(120deg, #7c3aed 0%, #ec4899 35%, #f43f5e 65%, #fbbf24 100%);

  /* Glow halos */
  --glow-violet: 0 0 40px rgba(124, 58, 237, 0.35), 0 0 80px rgba(124, 58, 237, 0.18);
  --glow-magenta: 0 0 40px rgba(236, 72, 153, 0.35), 0 0 80px rgba(236, 72, 153, 0.18);
  --glow-cyan: 0 0 40px rgba(6, 182, 212, 0.3), 0 0 80px rgba(6, 182, 212, 0.15);

  /* Typo */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-arabic: 'Amiri', 'Scheherazade New', serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--void);
  color: var(--ghost);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  /* fond stellaire subtil */
  background-image:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(124, 58, 237, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(236, 72, 153, 0.06), transparent 60%),
    radial-gradient(circle at 50% 50%, rgba(244, 63, 94, 0.03), transparent 70%);
  background-attachment: fixed;
}

::selection {
  background: var(--violet);
  color: var(--ghost);
}

/* Étoiles ambiantes */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(167, 139, 250, 0.35), transparent),
    radial-gradient(1px 1px at 80% 10%, rgba(236, 72, 153, 0.3), transparent),
    radial-gradient(1px 1px at 30% 80%, rgba(255,255,255,0.25), transparent),
    radial-gradient(1.2px 1.2px at 90% 50%, rgba(103, 232, 249, 0.3), transparent),
    radial-gradient(0.8px 0.8px at 10% 60%, rgba(255,255,255,0.35), transparent);
  background-size: 720px 720px;
  opacity: 0.6;
  z-index: 0;
  animation: starDrift 120s linear infinite;
}

@keyframes starDrift {
  to { background-position: 720px 720px; }
}

/* ============================================================
   TYPOGRAPHIE
   ============================================================ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--violet-soft);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--violet);
  box-shadow: var(--glow-violet);
}

.display {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.04;
  color: var(--ghost);
}

.display .accent {
  background: var(--grad-violet-magenta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

.display .accent-warm {
  background: var(--grad-magenta-crimson);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

.lede {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  color: var(--pale);
  max-width: 60ch;
}

.arabic {
  font-family: var(--font-arabic);
  direction: rtl;
  letter-spacing: 0;
}

.mono {
  font-family: var(--font-mono);
}

/* ============================================================
   NAV — Top, glassy, fixed
   ============================================================ */

.nav-wrap {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 14px 32px;
  background: linear-gradient(180deg, rgba(5, 3, 15, 0.85) 0%, rgba(5, 3, 15, 0.6) 70%, transparent 100%);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ghost);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-brand .ia {
  background: var(--grad-violet-magenta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}
.nav-brand-logo {
  width: 56px;
  height: 40px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-menu {
  display: flex;
  gap: 4px;
  list-style: none;
  align-items: center;
}
.nav-menu a {
  display: inline-block;
  padding: 10px 16px;
  color: var(--pale);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 6px;
  transition: all 0.2s;
  position: relative;
}
.nav-menu a:hover {
  color: var(--ghost);
  background: var(--glass);
}
.nav-menu a.current {
  color: var(--ghost);
  background: var(--glass-bright);
}
.nav-menu a.current::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 1px;
  background: var(--grad-violet-magenta);
  box-shadow: 0 0 8px rgba(124, 58, 237, 0.6);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--violet);
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.18), rgba(236, 72, 153, 0.18));
  color: var(--ghost);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.25s;
  box-shadow: 0 0 0 0 rgba(124, 58, 237, 0);
}
.nav-cta:hover {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.4), rgba(236, 72, 153, 0.4));
  box-shadow: 0 0 24px rgba(124, 58, 237, 0.4);
  border-color: var(--magenta);
}
.nav-cta .arrow { transition: transform 0.2s; }
.nav-cta:hover .arrow { transform: translateX(3px); }

.nav-burger {
  display: none;
  background: none;
  border: 1px solid var(--line-bright);
  color: var(--ghost);
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
}

@media (max-width: 980px) {
  .nav-menu, .nav-cta { display: none; }
  .nav-burger { display: inline-block; }
  .nav-wrap.open .nav-menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(10, 8, 28, 0.96);
    backdrop-filter: blur(18px);
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--line-bright);
  }
  .nav-wrap.open .nav-menu a {
    width: 100%;
    padding: 14px 16px;
  }
  .nav-wrap.open .nav-cta {
    display: inline-flex;
    margin: 12px 16px;
  }
}

/* ============================================================
   BOUTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--grad-violet-magenta);
  color: var(--ghost);
  box-shadow: 0 0 0 1px rgba(167, 139, 250, 0.3), 0 12px 32px -12px rgba(124, 58, 237, 0.6);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(167, 139, 250, 0.5), 0 18px 40px -10px rgba(124, 58, 237, 0.75), 0 0 30px rgba(236, 72, 153, 0.3);
}
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent 50%);
  opacity: 0;
  transition: opacity 0.25s;
}
.btn-primary:hover::before { opacity: 1; }

.btn-ghost {
  background: var(--glass);
  color: var(--ghost);
  border: 1px solid var(--line-bright);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: var(--glass-bright);
  border-color: var(--violet);
  box-shadow: 0 0 24px rgba(124, 58, 237, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--ghost);
  border: 1px solid var(--magenta);
}
.btn-outline:hover {
  background: var(--magenta);
  color: var(--void);
  box-shadow: var(--glow-magenta);
}

.btn .arrow { transition: transform 0.2s; display: inline-block; }
.btn:hover .arrow { transform: translateX(4px); }

/* ============================================================
   CONTAINERS & SECTIONS
   ============================================================ */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}
.container-narrow {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

section {
  position: relative;
  padding: 120px 0;
  z-index: 1;
}

.section-head {
  text-align: center;
  margin-bottom: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.section-head .eyebrow {
  margin: 0 auto;
}
.section-head .eyebrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--violet);
  box-shadow: var(--glow-violet);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(32px, 4.4vw, 56px);
  letter-spacing: -0.02em;
  line-height: 1.05;
  max-width: 20ch;
  color: var(--ghost);
}
.section-title .accent {
  background: var(--grad-violet-magenta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

.section-lede {
  font-size: 17px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 56ch;
  margin: 0 auto;
}

/* ============================================================
   CARDS — Verre néon
   ============================================================ */

.glass-card {
  position: relative;
  background: linear-gradient(180deg, rgba(26, 21, 48, 0.6) 0%, rgba(10, 8, 28, 0.4) 100%);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 36px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.35s ease, border-color 0.35s, box-shadow 0.35s;
  overflow: hidden;
}
.glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.35), transparent 50%, rgba(236, 72, 153, 0.25));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.6;
  transition: opacity 0.35s;
}
.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-bright);
  box-shadow: 0 24px 60px -24px rgba(124, 58, 237, 0.35);
}
.glass-card:hover::before { opacity: 1; }

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  position: relative;
  padding: 80px 0 40px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent 0%, rgba(10, 8, 28, 0.6) 100%);
  margin-top: 80px;
  z-index: 2;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
.footer-brand .nav-brand-logo { width: 72px; height: 52px; }
.footer-brand-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 16px 0 12px;
}
.footer-brand-text .ia {
  background: var(--grad-violet-magenta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.footer-tag {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  max-width: 32ch;
}
.footer h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--violet-soft);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer ul a {
  color: var(--pale);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.footer ul a:hover { color: var(--magenta-soft); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  flex-wrap: wrap;
}
.footer-bottom .domain {
  color: var(--violet-soft);
}

/* ============================================================
   PAGE-HEAD — bandeau standard pour pages internes
   ============================================================ */

.page-head {
  position: relative;
  padding: 200px 0 100px;
  text-align: center;
  overflow: hidden;
}
.page-head::before {
  content: "";
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 1200px; height: 600px;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(124, 58, 237, 0.22), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.page-head .eyebrow { justify-content: center; margin: 0 auto 22px; }
.page-head h1 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 6vw, 76px);
  letter-spacing: -0.025em;
  line-height: 1.02;
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}
.page-head h1 .accent {
  background: var(--grad-violet-magenta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-head .page-lede {
  max-width: 60ch;
  margin: 0 auto;
  color: var(--pale);
  font-size: 18px;
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* ============================================================
   ANIMATIONS UTILITAIRES
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="100"] { transition-delay: 0.1s; }
.reveal[data-delay="200"] { transition-delay: 0.2s; }
.reveal[data-delay="300"] { transition-delay: 0.3s; }
.reveal[data-delay="400"] { transition-delay: 0.4s; }
.reveal[data-delay="500"] { transition-delay: 0.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.floating { animation: float 6s ease-in-out infinite; }

@keyframes glow-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}
.pulse { animation: glow-pulse 3s ease-in-out infinite; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--violet), var(--magenta));
  border-radius: 8px;
  border: 2px solid var(--void);
}
::-webkit-scrollbar-thumb:hover { background: var(--magenta); }

/* ============================================================
   CURSOR GLOW — lueur violette qui suit le pointeur sur tout le site.
   Désactivé sur écrans tactiles et en motion-reduce.
   ============================================================ */
:root {
  --cursor-x: 50vw;
  --cursor-y: 50vh;
}
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background:
      radial-gradient(620px circle at var(--cursor-x) var(--cursor-y),
        rgba(124, 58, 237, 0.16) 0%,
        rgba(236, 72, 153, 0.08) 22%,
        rgba(6, 182, 212, 0.04) 42%,
        transparent 62%);
    mix-blend-mode: screen;
    transition: background 80ms linear;
    will-change: background;
  }
}