/* ─────────────────────────────────────────────────────────────────────
   SYTADELUM — Site vitrine institutionnel
   Palette : crème + bleu nuit + or doux (registre cabinet/administration)
   ───────────────────────────────────────────────────────────────────── */

@font-face {
  font-family: 'Cairo';
  src: url('../fonts/Cairo-Regular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Cairo';
  src: url('../fonts/Cairo-Bold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  --cream:        #f7f4ec;
  --cream-deep:   #efeadd;
  --paper:        #ffffff;
  --ink:          #0a1628;
  --ink-soft:     #1f2e44;
  --ink-dim:      rgba(10, 22, 40, 0.65);
  --ink-faint:    rgba(10, 22, 40, 0.42);
  --gold:         #a07f1a;
  --gold-soft:    #b59538;
  --gold-pale:    rgba(160, 127, 26, 0.22);
  --rule:         rgba(10, 22, 40, 0.12);
  --shadow:       0 1px 2px rgba(10, 22, 40, 0.04), 0 4px 12px rgba(10, 22, 40, 0.06);

  --serif:   'Hoefler Text', 'Garamond', 'Baskerville', 'Cormorant Garamond', 'Times New Roman', serif;
  --sans:    -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Helvetica, sans-serif;
  --arabic:  'Cairo', 'Noto Sans Arabic', 'Geeza Pro', sans-serif;
}

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

html { scroll-behavior: smooth; }
body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--gold-pale); transition: border-color .15s; }
a:hover { border-color: var(--gold); }
a.no-line { border: none; }
img { max-width: 100%; height: auto; display: block; }

/* ─── HEADER ─────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 244, 236, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .inner {
  max-width: 1140px; margin: 0 auto;
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; border: none; }
.brand img { width: 32px; height: 32px; border-radius: 6px; }
.brand .name {
  font-family: var(--serif); font-size: 1.15rem;
  letter-spacing: 0.18em; font-weight: 400;
}
.brand .name b { font-weight: 600; }

nav.primary { display: flex; gap: 28px; }
nav.primary a {
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  border: none;
  padding: 4px 0;
  position: relative;
  color: var(--ink-soft);
}
nav.primary a:hover { color: var(--ink); }
nav.primary a.current { color: var(--ink); }
nav.primary a.current::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 1px; background: var(--gold);
}

.btn-burger { display: none; background: none; border: 1px solid var(--rule); padding: 6px 10px; cursor: pointer; border-radius: 4px; }
.btn-burger span { display: block; width: 18px; height: 1.5px; background: var(--ink); margin: 4px 0; }

/* ─── HERO ────────────────────────────────────────────────────────── */
.hero {
  padding: 84px 32px 96px;
  text-align: center;
  border-bottom: 1px solid var(--rule);
}
.hero .eyebrow {
  font-size: 0.78rem; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1.15;
  max-width: 900px; margin: 0 auto 18px;
  color: var(--ink);
}
.hero h1 em { font-style: italic; color: var(--gold); }
.hero .doctrine {
  font-family: var(--serif); font-style: italic;
  font-size: 1.15rem; color: var(--ink-soft);
  margin: 8px auto 6px; max-width: 720px;
}
.hero .doctrine-ar {
  font-family: var(--arabic); font-weight: 700;
  font-size: 1rem; color: var(--ink-dim); direction: rtl;
  max-width: 720px; margin: 0 auto 38px;
}
.hero .ctas {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-top: 24px;
}

/* ─── BOUTONS ─────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 13px 26px;
  border-radius: 3px;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, transform .1s;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--ink); color: var(--cream);
}
.btn-primary:hover { background: var(--ink-soft); border-color: var(--ink-soft); }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: transparent; color: var(--ink); border-color: var(--ink);
}
.btn-secondary:hover { background: var(--ink); color: var(--cream); }

.btn-gold {
  background: var(--gold); color: var(--cream);
}
.btn-gold:hover { background: var(--gold-soft); }

/* ─── SECTIONS GÉNÉRIQUES ─────────────────────────────────────────── */
section { padding: 72px 32px; }
.section-title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 12px;
  color: var(--ink);
}
.section-title em { font-style: italic; color: var(--gold); }
.section-lead {
  font-family: var(--serif); font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
  margin-bottom: 42px;
  max-width: 720px;
}
.container { max-width: 1140px; margin: 0 auto; }
.container.narrow { max-width: 860px; }

.eyebrow-section {
  font-size: 0.74rem; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  display: inline-flex; gap: 10px; align-items: center;
}
.eyebrow-section::before, .eyebrow-section::after {
  content: ''; display: inline-block; width: 18px; height: 1px; background: var(--gold); opacity: 0.6;
}

/* ─── CARTES ──────────────────────────────────────────────────────── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 28px 26px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--gold-pale); }
.card .roman {
  font-family: var(--serif); font-style: italic;
  color: var(--gold); font-size: 0.95rem;
  margin-bottom: 10px;
}
.card h3 {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.35rem; margin-bottom: 8px;
  color: var(--ink);
}
.card h3.ar {
  font-family: var(--arabic); font-weight: 700;
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 14px; direction: rtl;
}
.card p {
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.65;
}
.card p.ar {
  font-family: var(--arabic);
  color: var(--ink-dim); direction: rtl;
  margin-top: 8px;
  font-size: 0.92rem;
}

/* ─── BANDEAU CITATION / FILET D'ENCADREMENT ──────────────────────── */
.quote-block {
  border-left: 2px solid var(--gold);
  padding: 14px 28px;
  margin: 32px 0;
  font-family: var(--serif); font-style: italic;
  font-size: 1.2rem;
  color: var(--ink-soft);
}

/* ─── TIMELINE (flux 4 étapes) ────────────────────────────────────── */
.timeline {
  display: grid;
  grid-template-columns: 1fr 28px 1fr 28px 1fr 28px 1fr;
  gap: 0;
  align-items: stretch;
}
.timeline-step {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 32px 26px 28px;
  text-align: center;
  position: relative;
  transition: border-color .2s, transform .2s;
}
.timeline-step:hover { border-color: var(--gold-pale); }
.timeline-step-key {
  border-color: var(--gold);
  background: linear-gradient(180deg, #fffdf6 0%, var(--paper) 100%);
}
.timeline-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border: 1.5px solid var(--gold);
  color: var(--gold);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-style: italic;
  margin: 0 auto 18px;
  background: var(--paper);
}
.timeline-step-key .timeline-num {
  background: var(--gold);
  color: var(--paper);
}
.timeline-step h4 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 8px;
}
.timeline-step p {
  font-family: var(--sans);
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.55;
}
.timeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-family: 'Hoefler Text', Georgia, serif;
  font-size: 1.5rem;
  opacity: 0.7;
}

@media (max-width: 900px) {
  .timeline {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .timeline-arrow {
    transform: rotate(90deg);
    padding: 4px 0;
  }
}

/* ─── SCHÉMA ARCHITECTURE ─────────────────────────────────────────── */
.schema {
  display: flex; align-items: stretch; gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 40px 0;
}
.schema .box {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 22px 24px;
  flex: 1 1 220px;
  text-align: center;
}
.schema .box.center {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}
.schema .box.center h4 { color: var(--gold); }
.schema .box h4 {
  font-family: var(--serif); font-weight: 400;
  font-size: 1.15rem;
  margin-bottom: 4px;
}
.schema .box .sub {
  font-size: 0.85rem;
  color: var(--ink-dim);
}
.schema .box.center .sub { color: rgba(247,244,236,0.7); }
.schema .arrow {
  display: flex; align-items: center; font-family: monospace; color: var(--gold);
  font-size: 1.4rem;
}

.ledger-row {
  display: flex; justify-content: center; margin-top: -6px;
}
.ledger-vbar {
  width: 1px; height: 28px; background: var(--gold); opacity: 0.7;
  margin: 0 auto;
}
.ledger-box {
  background: var(--cream-deep);
  border: 1px dashed var(--gold);
  padding: 16px 24px;
  text-align: center;
  border-radius: 4px;
  max-width: 320px;
  margin: 0 auto;
}
.ledger-box h4 {
  font-family: var(--serif); font-weight: 400;
  color: var(--gold); font-size: 1.05rem;
  margin-bottom: 2px;
}
.ledger-box .sub { font-size: 0.78rem; color: var(--ink-dim); letter-spacing: 0.06em; }

/* ─── TABLEAU ─────────────────────────────────────────────────────── */
table.tech {
  width: 100%; border-collapse: collapse;
  background: var(--paper); border: 1px solid var(--rule); border-radius: 4px;
  overflow: hidden;
}
table.tech th, table.tech td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  font-size: 0.95rem;
}
table.tech th {
  background: var(--cream-deep);
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 600;
}
table.tech tr:last-child td { border-bottom: none; }
table.tech td.gold { font-family: var(--serif); font-style: italic; color: var(--gold); }

/* ─── CAPTURE D'ÉCRAN PLACEHOLDER ─────────────────────────────────── */
.screen-frame {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 8px;
  box-shadow: var(--shadow);
}
.screen-frame .placeholder {
  background:
    repeating-linear-gradient(45deg, var(--cream-deep) 0 12px, var(--cream) 12px 24px);
  border-radius: 3px;
  aspect-ratio: 16/10;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-faint);
  font-family: var(--serif); font-style: italic; font-size: 0.95rem;
}

/* ─── FORMULAIRE ──────────────────────────────────────────────────── */
form.contact-form {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 32px;
  max-width: 600px;
}
form.contact-form .field { margin-bottom: 18px; }
form.contact-form label {
  display: block;
  font-size: 0.72rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--ink-soft);
  margin-bottom: 6px; font-weight: 600;
}
form.contact-form input,
form.contact-form textarea,
form.contact-form select {
  width: 100%;
  padding: 11px 13px;
  font-family: inherit; font-size: 0.96rem;
  background: var(--cream);
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink);
  transition: border-color .15s, background .15s;
}
form.contact-form input:focus,
form.contact-form textarea:focus,
form.contact-form select:focus {
  outline: none; border-color: var(--gold); background: #fff;
}
form.contact-form textarea { min-height: 140px; resize: vertical; }
form.contact-form .submit-row { margin-top: 8px; }
form.contact-form .helper {
  font-size: 0.82rem; color: var(--ink-faint);
  margin-top: 14px;
}

/* ─── FOOTER ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--ink);
  color: var(--cream);
  padding: 56px 32px 32px;
  margin-top: 60px;
}
.site-footer .inner {
  max-width: 1140px; margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px;
}
.site-footer h5 {
  font-family: var(--serif); font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.site-footer p, .site-footer a {
  color: rgba(247, 244, 236, 0.82);
  font-size: 0.92rem;
  line-height: 1.7;
  border: none;
}
.site-footer a:hover { color: var(--gold); }
.site-footer .doctrine-foot {
  font-family: var(--serif); font-style: italic;
  color: rgba(247, 244, 236, 0.6);
  font-size: 0.95rem;
  margin-top: 18px;
}
.site-footer .legal {
  border-top: 1px solid rgba(247, 244, 236, 0.14);
  margin-top: 36px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.78rem;
  color: rgba(247, 244, 236, 0.5);
  letter-spacing: 0.08em;
}

/* ─── RESPONSIVE ──────────────────────────────────────────────────── */
@media (max-width: 880px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  nav.primary {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--cream);
    border-bottom: 1px solid var(--rule);
    padding: 18px 32px 24px;
    gap: 14px;
  }
  nav.primary.open { display: flex; }
  nav.primary a.current::after { display: none; }
  .btn-burger { display: block; }
  .schema { flex-direction: column; }
  .schema .arrow { transform: rotate(90deg); justify-content: center; }
  section { padding: 56px 24px; }
  .hero { padding: 64px 24px 72px; }
  .site-footer .inner { grid-template-columns: 1fr; gap: 32px; }
  table.tech { font-size: 0.88rem; }
  table.tech th, table.tech td { padding: 10px 12px; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 1.85rem; }
  .section-title { font-size: 1.6rem; }
}