/* ===== VARIABLES ===== */
:root {
  --purple: #3D1A8E;
  --purple-light: #5B2FBF;
  --purple-dark: #1E0A5C;
  --orange: #F26522;
  --orange-light: #FF8040;
  --white: #FFFFFF;
  --off-white: #F8F7FF;
  --gray-100: #F3F4F6;
  --gray-300: #D1D5DB;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --dark: #0D0820;
  --text: #1A1A2E;
  --r: 16px;
  --shadow: 0 4px 24px rgba(61,26,142,0.10);
  --shadow-lg: 0 12px 48px rgba(61,26,142,0.18);
  --t: 0.3s ease;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Space Grotesk', sans-serif; color: var(--text); background: var(--white); overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== NAVBAR ===== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(61,26,142,0.08);
  transition: var(--t);
}
.nav-container {
  max-width: 1280px; margin: 0 auto;
  padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.nav-logo img { height: 44px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 14px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 500; color: var(--gray-700);
  transition: var(--t);
}
.nav-links a:hover { color: var(--purple); background: rgba(61,26,142,0.06); }
.btn-nav-cta {
  background: var(--purple) !important; color: var(--white) !important;
  padding: 9px 20px !important; border-radius: 8px !important;
  font-weight: 600 !important; margin-left: 8px !important;
}
.btn-nav-cta:hover { background: var(--purple-light) !important; }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 8px; border-radius: 8px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--purple); border-radius: 2px; transition: var(--t);
}

/* ===== HERO SPLIT ===== */
#hero {
  min-height: 100vh;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 100px 0 0;
  background: var(--off-white);
  overflow: hidden;
}
.hero-left {
  padding: 60px 64px 60px 80px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(61,26,142,0.08); color: var(--purple);
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.5px;
  padding: 7px 16px; border-radius: 50px; margin-bottom: 28px;
  border: 1px solid rgba(61,26,142,0.15);
}
.hero-left h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  font-weight: 800; line-height: 1.1;
  color: var(--dark); margin-bottom: 20px;
}
.hero-left h1 .accent { color: var(--orange); }
.hero-left p {
  font-size: 1.05rem; color: var(--gray-500); line-height: 1.75;
  margin-bottom: 36px; max-width: 480px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.btn-cta {
  background: var(--orange); color: var(--white);
  padding: 14px 28px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 700;
  box-shadow: 0 4px 20px rgba(242,101,34,0.35);
  transition: var(--t); display: inline-block;
}
.btn-cta:hover { background: var(--orange-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(242,101,34,0.45); }
.btn-outline {
  background: transparent; color: var(--purple);
  padding: 14px 28px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600;
  border: 2px solid var(--purple);
  transition: var(--t); display: inline-block;
}
.btn-outline:hover { background: var(--purple); color: var(--white); }
.hero-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  background: var(--white); border: 1px solid var(--gray-300);
  padding: 7px 14px; border-radius: 50px;
  font-size: 0.82rem; font-weight: 500; color: var(--gray-700);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* HERO RIGHT */
.hero-right {
  height: 100%;
  min-height: 100vh;
  position: relative;
  background: var(--purple-dark);
}
.hero-photo-stack {
  position: relative; height: 100%; min-height: 100vh;
}
.hero-img-main {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center top;
  opacity: 0.75;
  position: absolute; inset: 0;
}
.hero-card-float {
  position: absolute; z-index: 10;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-radius: 14px; padding: 14px 18px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  min-width: 180px;
}
.card-top { top: 120px; left: -32px; }
.card-bottom { bottom: 80px; right: 24px; }
.card-float-icon { font-size: 1.6rem; }
.hero-card-float strong { display: block; font-size: 0.9rem; font-weight: 700; color: var(--dark); }
.hero-card-float span { font-size: 0.78rem; color: var(--gray-500); }

/* ===== STATS BAND ===== */
.stats-band {
  background: var(--purple);
  padding: 28px 32px;
}
.stats-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center;
  gap: 48px; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-item strong { display: block; font-size: 1.3rem; font-weight: 700; color: var(--white); }
.stat-item span { font-size: 0.8rem; color: rgba(255,255,255,0.65); }
.stat-divider { width: 1px; height: 36px; background: rgba(255,255,255,0.2); }

/* ===== SECTIONS ===== */
#atouts { padding: 100px 32px; background: var(--white); }
#campus, .section-dark { padding: 100px 32px; background: var(--dark); }
#formations { padding: 100px 32px; background: var(--off-white); }
.section-purple { background: var(--purple-dark); padding: 80px 32px; }
#inscription { padding: 100px 32px; background: var(--white); }
#temoignages { padding: 100px 32px; background: var(--dark); }
#contact { padding: 100px 32px; background: var(--off-white); }
.container { max-width: 1280px; margin: 0 auto; }

.section-label {
  display: inline-block;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--orange); margin-bottom: 12px;
}
.section-label.light { color: rgba(255,255,255,0.6); }
.section-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800; color: var(--dark);
  margin-bottom: 16px; line-height: 1.2;
}
.section-title.light { color: var(--white); }
.section-sub {
  font-size: 1rem; color: var(--gray-500); max-width: 580px; line-height: 1.7;
  margin-bottom: 56px;
}
.section-sub.light { color: rgba(255,255,255,0.6); }

/* ===== ATOUTS ===== */
.atouts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}
.atout-card {
  background: var(--off-white); border-radius: var(--r);
  padding: 28px; border: 1px solid var(--gray-300);
  transition: var(--t);
}
.atout-card:hover { border-color: var(--purple); box-shadow: var(--shadow); transform: translateY(-4px); }
.atout-card.atout-big {
  grid-column: span 2;
  background: var(--purple); border-color: var(--purple);
  color: var(--white);
}
.atout-card.atout-big h3 { color: var(--white); }
.atout-card.atout-big p { color: rgba(255,255,255,0.75); }
.atout-icon { font-size: 2rem; margin-bottom: 14px; }
.atout-card h3 { font-size: 1rem; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.atout-card p { font-size: 0.88rem; color: var(--gray-500); line-height: 1.65; }

/* ===== CAMPUS MOSAIC ===== */
.campus-mosaic {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 280px 280px;
  gap: 12px;
}
.mosaic-item {
  position: relative; overflow: hidden; border-radius: 14px;
}
.mosaic-item.mosaic-tall { grid-row: span 2; }
.mosaic-item.mosaic-wide { grid-column: span 2; }
.mosaic-item img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: center top;
  transition: transform 0.5s ease;
}
.mosaic-item:hover img { transform: scale(1.06); }
.mosaic-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(13,8,32,0.7) 0%, transparent 50%);
  display: flex; align-items: flex-end; padding: 16px;
  opacity: 0; transition: opacity 0.3s ease;
}
.mosaic-item:hover .mosaic-overlay { opacity: 1; }
.mosaic-overlay span { color: var(--white); font-size: 0.85rem; font-weight: 600; }

/* ===== FORMATIONS ===== */
.formations-tabs {
  display: flex; gap: 12px; margin-bottom: 40px;
}
.ftab {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 28px; border-radius: 12px;
  font-size: 0.95rem; font-weight: 600; color: var(--gray-500);
  background: var(--white); border: 2px solid var(--gray-300);
  transition: var(--t);
}
.ftab.active { background: var(--purple); color: var(--white); border-color: var(--purple); }
.ftab:hover:not(.active) { border-color: var(--purple); color: var(--purple); }
.ftab-icon { font-size: 1.2rem; }
.ftab-content { display: none; }
.ftab-content.active { display: block; }

.filieres-list { display: flex; flex-direction: column; gap: 12px; }
.filiere-row {
  background: var(--white); border-radius: var(--r);
  border: 1px solid var(--gray-300);
  overflow: hidden; transition: var(--t);
}
.filiere-row:hover { border-color: var(--purple); }
.filiere-header {
  display: flex; align-items: center; gap: 16px;
  padding: 22px 28px; cursor: pointer;
}
.filiere-icon { font-size: 1.8rem; flex-shrink: 0; }
.filiere-header h3 { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; }
.filiere-meta { font-size: 0.8rem; color: var(--orange); font-weight: 600; }
.filiere-toggle {
  margin-left: auto; flex-shrink: 0;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--off-white); color: var(--purple);
  font-size: 1.4rem; font-weight: 700; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: var(--t);
}
.filiere-row.open .filiere-toggle { background: var(--purple); color: var(--white); transform: rotate(45deg); }
.filiere-body {
  display: none; padding: 0 28px 28px;
  border-top: 1px solid var(--gray-100);
}
.filiere-row.open .filiere-body { display: block; padding-top: 24px; }
.filiere-cols {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  margin-bottom: 24px;
}
.filiere-cols strong {
  display: block; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--gray-500); margin-bottom: 12px;
}
.filiere-cols ul li {
  font-size: 0.88rem; color: var(--gray-700);
  padding: 4px 0 4px 14px; position: relative;
}
.filiere-cols ul li::before { content: '·'; position: absolute; left: 0; color: var(--purple); font-weight: 700; }
.filiere-cols ul.debouches li { color: var(--purple); font-weight: 600; }
.filiere-cols ul.debouches li::before { color: var(--orange); }
.btn-filiere {
  display: inline-block;
  background: var(--orange); color: var(--white);
  padding: 10px 22px; border-radius: 8px;
  font-size: 0.88rem; font-weight: 700;
  transition: var(--t);
}
.btn-filiere:hover { background: var(--orange-light); transform: translateY(-1px); }
.formations-cta {
  margin-top: 40px; padding: 28px 36px;
  background: var(--purple); border-radius: var(--r);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.formations-cta p { color: rgba(255,255,255,0.85); font-size: 0.95rem; }
.formations-cta p strong { color: var(--white); }

/* ===== PROCESSUS ===== */
.process-steps {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 16px; flex-wrap: wrap;
}
.process-step {
  flex: 1; min-width: 180px; max-width: 220px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r); padding: 28px 24px;
}
.step-num {
  font-family: 'Syne', sans-serif;
  font-size: 2.8rem; font-weight: 800;
  color: rgba(255,255,255,0.08); line-height: 1; margin-bottom: 12px;
}
.step-content h3 { font-size: 0.95rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.step-content p { font-size: 0.85rem; color: rgba(255,255,255,0.55); line-height: 1.6; }
.process-arrow {
  font-size: 1.6rem; color: var(--orange);
  align-self: center; flex-shrink: 0;
}

/* ===== INSCRIPTION ===== */
.inscription-wrapper {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px;
  align-items: start;
}
.inscription-left p { font-size: 1rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 32px; }
.inscription-infos { display: flex; flex-direction: column; gap: 12px; }
.info-item {
  font-size: 0.9rem; color: var(--gray-700);
  padding: 12px 16px;
  background: var(--off-white); border-radius: 10px;
  border-left: 3px solid var(--orange);
}
.inscription-right {
  background: var(--off-white); border-radius: 20px;
  padding: 40px 36px; border: 1px solid var(--gray-300);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.fg { display: flex; flex-direction: column; gap: 6px; }
.fg.full { margin-bottom: 16px; }
.fg label { font-size: 0.82rem; font-weight: 600; color: var(--gray-700); }
.fg input, .fg select, .fg textarea {
  background: var(--white); border: 1.5px solid var(--gray-300);
  border-radius: 10px; padding: 12px 14px;
  font-size: 0.9rem; color: var(--text); font-family: inherit;
  transition: var(--t);
}
.fg input:focus, .fg select:focus, .fg textarea:focus {
  outline: none; border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(61,26,142,0.1);
}
.btn-submit-form {
  width: 100%; background: var(--purple); color: var(--white);
  padding: 15px 24px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 700;
  transition: var(--t); margin-top: 8px;
}
.btn-submit-form:hover { background: var(--purple-light); transform: translateY(-1px); }
.form-note { margin-top: 10px; font-size: 0.78rem; color: var(--gray-500); text-align: center; }
.form-success {
  margin-top: 16px; padding: 14px 20px;
  background: rgba(22,163,74,0.1); border: 1px solid rgba(22,163,74,0.3);
  border-radius: 10px; color: #166534; font-weight: 600; text-align: center;
  font-size: 0.9rem;
}

/* ===== TÉMOIGNAGES ===== */
.temoignages-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.temoignage-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r); padding: 32px 28px;
  position: relative; transition: var(--t);
}
.temoignage-card:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
.temoignage-card.featured-card {
  background: var(--purple); border-color: var(--purple);
  transform: scale(1.03);
}
.temoignage-card.featured-card:hover { transform: scale(1.03) translateY(-4px); }
.temoignage-quote {
  font-size: 4rem; line-height: 1; color: var(--orange);
  font-family: 'Syne', sans-serif; margin-bottom: 12px;
}
.temoignage-card p {
  font-size: 0.92rem; color: rgba(255,255,255,0.75);
  line-height: 1.75; font-style: italic; margin-bottom: 24px;
}
.temoignage-author { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.temoignage-photo {
  width: 48px; height: 48px; border-radius: 50%;
  object-fit: cover; object-position: top;
  border: 2px solid var(--orange); flex-shrink: 0;
}
.temoignage-author strong { display: block; font-size: 0.9rem; color: var(--white); }
.temoignage-author span { font-size: 0.78rem; color: rgba(255,255,255,0.5); }
.stars { color: #F59E0B; font-size: 0.9rem; letter-spacing: 2px; }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start;
}
.contact-left p { font-size: 1rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 32px; }
.contact-cards { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.contact-info-card {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--white); border-radius: 12px; padding: 16px 20px;
  border: 1px solid var(--gray-300);
}
.ci-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.contact-info-card strong { display: block; font-size: 0.82rem; font-weight: 700; color: var(--dark); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.contact-info-card p { font-size: 0.88rem; color: var(--gray-500); line-height: 1.6; }
.contact-info-card a { color: var(--purple); transition: var(--t); }
.contact-info-card a:hover { color: var(--orange); }
.contact-socials { display: flex; gap: 10px; flex-wrap: wrap; }
.csocial {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 600; transition: var(--t);
}
.csocial.instagram { background: linear-gradient(135deg, #E1306C, #833AB4); color: var(--white); }
.csocial.facebook { background: #1877F2; color: var(--white); }
.csocial.web { background: var(--off-white); color: var(--purple); border: 1px solid var(--gray-300); }
.csocial:hover { transform: translateY(-2px); opacity: 0.9; }
.contact-right { height: 100%; min-height: 500px; }

/* ===== FOOTER ===== */
#footer { background: var(--dark); padding: 72px 32px 0; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
  gap: 48px; padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-logo { height: 48px; width: auto; margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.45); line-height: 1.7; margin-bottom: 6px; }
.footer-brand strong { color: var(--orange); }
.footer-col h4 {
  font-size: 0.78rem; font-weight: 700; color: var(--white);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.45); transition: var(--t); }
.footer-col ul li a:hover { color: var(--orange); }
.footer-col ul li { font-size: 0.83rem; color: rgba(255,255,255,0.45); }
.footer-col p { font-size: 0.85rem; color: rgba(255,255,255,0.45); margin-bottom: 6px; line-height: 1.5; }
.footer-socials { display: flex; gap: 10px; margin-top: 14px; }
.footer-socials a {
  width: 36px; height: 36px; border-radius: 8px;
  background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.5);
  display: flex; align-items: center; justify-content: center;
  transition: var(--t);
}
.footer-socials a:hover { background: var(--orange); color: var(--white); }
.footer-bottom { padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.25); }
.footer-bottom a { color: var(--orange); }

/* ===== BACK TO TOP ===== */
#backToTop {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--purple); color: var(--white);
  font-size: 1.1rem; font-weight: 700;
  box-shadow: 0 4px 16px rgba(61,26,142,0.4);
  opacity: 0; pointer-events: none; transition: var(--t);
}
#backToTop.visible { opacity: 1; pointer-events: auto; }
#backToTop:hover { background: var(--purple-light); transform: translateY(-3px); }

/* ===== ANIMATIONS ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  #hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-left { padding: 120px 40px 60px; }
  .hero-right { height: 400px; min-height: 400px; }
  .hero-img-main { position: relative; height: 400px; }
  .atouts-grid { grid-template-columns: 1fr 1fr; }
  .atout-card.atout-big { grid-column: span 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--white); padding: 16px 24px 24px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); gap: 4px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .hero-left { padding: 100px 24px 48px; }
  .hero-right { height: 300px; min-height: 300px; }
  .campus-mosaic { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
  .mosaic-item.mosaic-tall { grid-row: span 1; }
  .mosaic-item.mosaic-wide { grid-column: span 2; }
  .formations-tabs { flex-direction: column; }
  .filiere-cols { grid-template-columns: 1fr; }
  .inscription-wrapper { grid-template-columns: 1fr; gap: 40px; }
  .inscription-right { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .temoignages-row { grid-template-columns: 1fr; }
  .temoignage-card.featured-card { transform: none; }
  .process-steps { flex-direction: column; align-items: center; }
  .process-arrow { transform: rotate(90deg); }
  .stats-inner { gap: 24px; }
  .stat-divider { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .formations-cta { flex-direction: column; }
}
@media (max-width: 480px) {
  .hero-left h1 { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .btn-cta, .btn-outline { text-align: center; }
  .atouts-grid { grid-template-columns: 1fr; }
  .atout-card.atout-big { grid-column: span 1; }
  .campus-mosaic { grid-template-columns: 1fr; }
  .mosaic-item.mosaic-wide { grid-column: span 1; }
  #atouts, #campus, .section-dark, #formations, #inscription, #temoignages, #contact { padding: 72px 16px; }
}