/* =====================================================
   SEN STEM ACADEMY — Design System
   Mobile-first · Optimisé 3G · Moderne
   ===================================================== */

/* ─── Variables ─────────────────────────────────────── */
:root {
  --primary:       #0B3D91;
  --primary-dark:  #072B6B;
  --primary-light: #1A5CB8;
  --secondary:     #00C2CB;
  --accent:        #FF6B35;
  --accent-light:  #FF8A5C;
  --success:       #27AE60;
  --gold:          #F39C12;
  --dark:          #0F172A;
  --gray-900:      #1E293B;
  --gray-800:      #334155;
  --gray-600:      #64748B;
  --gray-400:      #94A3B8;
  --gray-200:      #E2E8F0;
  --gray-100:      #F1F5F9;
  --white:         #FFFFFF;
  --bg:            #F8FAFC;

  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:     0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.14);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.18);

  --font:       'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --transition: .25s cubic-bezier(.4,0,.2,1);
  --max-w: 1200px;
}

/* ─── Reset & Base ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--gray-900);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, textarea, select {
  font: inherit;
  border: none;
  outline: none;
  background: none;
}

/* ─── Typography ─────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); font-weight: 700; line-height: 1.25; }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); font-weight: 600; line-height: 1.35; }
h4 { font-size: 1.1rem; font-weight: 600; }
p  { font-size: 1rem; color: var(--gray-600); }

.text-primary   { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent    { color: var(--accent); }
.text-white     { color: var(--white); }
.text-center    { text-align: center; }

/* ─── Layout Utilities ───────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section {
  padding-block: 5rem;
}

.section-sm { padding-block: 3rem; }

.grid-2 { display: grid; gap: 2rem; }
.grid-3 { display: grid; gap: 1.5rem; }
.grid-4 { display: grid; gap: 1.5rem; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { flex-direction: column; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

/* ─── Badge / Tag ────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.badge-primary  { background: rgba(11,61,145,.12); color: var(--primary); }
.badge-accent   { background: rgba(255,107,53,.12); color: var(--accent); }
.badge-success  { background: rgba(39,174,96,.12); color: var(--success); }
.badge-secondary{ background: rgba(0,194,203,.12); color: var(--secondary); }

/* ─── Section Labels ─────────────────────────────────── */
.section-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  text-align: center;
  margin-bottom: 3rem;
}

.section-label h2 { color: var(--dark); }

.section-label p {
  max-width: 540px;
  font-size: 1.1rem;
}

.divider {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 999px;
  margin-inline: auto;
}

/* ─── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(11,61,145,.35);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,107,53,.35);
}

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

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

.btn-whatsapp {
  background: #25D366;
  color: var(--white);
}
.btn-whatsapp:hover {
  background: #1EB558;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,.4);
}

.btn-lg { padding: 1rem 2.25rem; font-size: 1.05rem; border-radius: var(--radius-lg); }
.btn-sm { padding: .5rem 1.1rem; font-size: .85rem; }

/* ─── Navbar ─────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  padding: .65rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: white;
  font-weight: 800;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -.01em;
}

.nav-logo-sub {
  font-size: .7rem;
  color: var(--gray-600);
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.navbar:not(.scrolled) .nav-logo-name { color: var(--white); }
.navbar:not(.scrolled) .nav-logo-sub  { color: rgba(255,255,255,.7); }

.nav-links {
  display: none;
  align-items: center;
  gap: .25rem;
}

.nav-links a {
  padding: .5rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray-700, #374151);
  transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
  background: rgba(11,61,145,.08);
  color: var(--primary);
}

.navbar:not(.scrolled) .nav-links a { color: rgba(255,255,255,.88); }
.navbar:not(.scrolled) .nav-links a:hover { background: rgba(255,255,255,.15); color: var(--white); }

.nav-cta { display: none; }

.nav-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 999px;
  transition: var(--transition);
}

.navbar.scrolled .nav-toggle span { background: var(--gray-800); }

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  top: 72px;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  padding: 2rem 1.5rem;
  gap: .5rem;
  overflow-y: auto;
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--gray-900);
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.nav-mobile a:hover, .nav-mobile a.active {
  background: var(--gray-100);
  border-left-color: var(--primary);
  color: var(--primary);
}

.nav-mobile-cta {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

/* ─── Hero ───────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0B3D91 0%, #072B6B 40%, #0A1128 100%);
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .18;
}

.hero-blob-1 {
  width: 500px; height: 500px;
  background: var(--secondary);
  top: -100px; right: -80px;
  animation: float 8s ease-in-out infinite;
}

.hero-blob-2 {
  width: 350px; height: 350px;
  background: var(--accent);
  bottom: -80px; left: -60px;
  animation: float 10s ease-in-out infinite reverse;
}

.hero-blob-3 {
  width: 200px; height: 200px;
  background: var(--gold);
  top: 40%; left: 30%;
  animation: float 6s ease-in-out infinite 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}

/* Grid pattern overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero .container {
  position: relative;
  z-index: 1;
  padding-block: 4rem 5rem;
}

.hero-content {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem 1rem .4rem .6rem;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  color: rgba(255,255,255,.9);
  font-size: .82rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  margin-bottom: .5rem;
}

.hero-badge-dot {
  width: 8px; height: 8px;
  background: #00C2CB;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.5); }
}

.hero-title { color: var(--white); margin-bottom: 1.25rem; }

.hero-title .highlight {
  position: relative;
  display: inline-block;
  color: var(--secondary);
}

.hero-description {
  color: rgba(255,255,255,.78);
  font-size: 1.1rem;
  max-width: 520px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(8px);
  margin-top: 2.5rem;
}

.hero-stat {
  padding: 1.25rem 1rem;
  text-align: center;
  background: rgba(255,255,255,.04);
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: .25rem;
}

.hero-stat-label {
  font-size: .75rem;
  color: rgba(255,255,255,.6);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* Hero Visual - Floating Cards */
.hero-visual {
  display: none;
  position: relative;
}

.hero-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  color: white;
}

.hero-card-main {
  background: linear-gradient(135deg, rgba(0,194,203,.15), rgba(11,61,145,.2));
  border-color: rgba(0,194,203,.3);
}

.hero-floating-cards {
  display: grid;
  gap: 1rem;
}

.hero-mini-card {
  display: flex;
  align-items: center;
  gap: .75rem;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  backdrop-filter: blur(8px);
}

.hero-mini-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ─── Services Cards ─────────────────────────────────── */
.services {
  background: var(--white);
}

.service-card {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  transition: var(--transition);
}

.service-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.service-card.scratch::before  { background: linear-gradient(90deg, #FF6B35, #FF8A5C); }
.service-card.python::before   { background: linear-gradient(90deg, #0B3D91, #00C2CB); }
.service-card.robotics::before { background: linear-gradient(90deg, #27AE60, #00C2CB); }

.service-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.service-card.scratch  .service-icon { background: rgba(255,107,53,.12); }
.service-card.python   .service-icon { background: rgba(11,61,145,.1); }
.service-card.robotics .service-icon { background: rgba(39,174,96,.12); }

.service-level {
  font-size: .78rem;
  font-weight: 600;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.service-card h3 { color: var(--dark); }
.service-card p  { font-size: .95rem; }

.service-features {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-top: auto;
}

.service-feature {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .88rem;
  color: var(--gray-800);
}

.service-feature::before {
  content: '✓';
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.service-card.scratch  .service-feature::before { background: rgba(255,107,53,.15); color: var(--accent); }
.service-card.python   .service-feature::before { background: rgba(11,61,145,.12); color: var(--primary); }
.service-card.robotics .service-feature::before { background: rgba(39,174,96,.15); color: var(--success); }

/* ─── Stats Section ──────────────────────────────────── */
.stats-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding-block: 4rem;
}

.stats-grid {
  display: grid;
  gap: 2rem;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 3rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: .25rem;
  background: linear-gradient(135deg, var(--white), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-unit {
  font-size: 1.5rem;
}

.stat-label {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  font-weight: 500;
}

/* ─── Why Us / Features ──────────────────────────────── */
.features-section { background: var(--bg); }

.feature-list {
  display: grid;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.feature-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.feature-text h4 { color: var(--dark); margin-bottom: .3rem; }
.feature-text p  { font-size: .92rem; }

/* Features visual */
.features-visual {
  position: relative;
}

.impact-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.impact-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.impact-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-dot 2s ease-in-out infinite;
}

.impact-list { display: flex; flex-direction: column; gap: .85rem; }

.impact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.impact-label { font-size: .88rem; color: var(--gray-600); }

.impact-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--gray-200);
  border-radius: 999px;
  overflow: hidden;
  max-width: 160px;
}

.impact-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 1.5s cubic-bezier(.4,0,.2,1);
  width: 0;
}

.impact-bar.animated { }

.impact-pct {
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
  min-width: 36px;
  text-align: right;
}

/* ─── Testimonials ───────────────────────────────────── */
.testimonials { background: var(--white); }

.testimonial-grid { display: grid; gap: 1.5rem; }

.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  position: relative;
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.quote-mark {
  font-size: 4rem;
  line-height: .8;
  color: var(--primary);
  opacity: .15;
  font-family: Georgia, serif;
  margin-bottom: -.5rem;
}

.testimonial-text {
  font-style: italic;
  color: var(--gray-800);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  font-size: .95rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.author-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: white;
  flex-shrink: 0;
}

.author-name { font-weight: 700; font-size: .9rem; color: var(--dark); }
.author-role { font-size: .78rem; color: var(--gray-600); }

.stars {
  display: flex;
  gap: 2px;
  margin-top: .3rem;
  color: var(--gold);
  font-size: .8rem;
}

/* ─── CTA Banner ─────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, #0F172A, #0B3D91, #072B6B);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,194,203,.2) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(255,107,53,.15) 0%, transparent 60%);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.cta-content h2 { color: var(--white); }
.cta-content p  { color: rgba(255,255,255,.75); font-size: 1.1rem; max-width: 480px; }

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ─── Footer ─────────────────────────────────────────── */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  padding-block: 3rem 1.5rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  font-size: .9rem;
  margin-top: .75rem;
  max-width: 260px;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
}

.footer-socials {
  display: flex;
  gap: .5rem;
  margin-top: 1.25rem;
}

.social-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid rgba(255,255,255,.1);
}

.social-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.footer-col h5 {
  color: var(--white);
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer-links a {
  font-size: .9rem;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: .4rem;
}

.footer-links a:hover { color: var(--secondary); }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .88rem;
  color: rgba(255,255,255,.55);
  margin-bottom: .6rem;
}

.footer-contact-item span:first-child { font-size: 1rem; flex-shrink: 0; }

.footer-divider {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin-bottom: 1.5rem;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  align-items: center;
  text-align: center;
  font-size: .82rem;
  color: rgba(255,255,255,.35);
}

/* ─── WhatsApp Float Button ──────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 900;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .75rem;
}

.whatsapp-bubble {
  display: none;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-lg);
  font-size: .88rem;
  color: var(--gray-800);
  max-width: 220px;
  text-align: right;
  border: 1px solid var(--gray-200);
}

.whatsapp-bubble.visible { display: block; animation: fadeIn .3s ease; }

.whatsapp-btn {
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  box-shadow: 0 4px 20px rgba(37,211,102,.5);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  animation: whatsapp-pulse 3s ease-in-out infinite;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,.6);
}

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,.5); }
  50%       { box-shadow: 0 4px 36px rgba(37,211,102,.8), 0 0 0 8px rgba(37,211,102,.1); }
}

/* ─── Page Hero (Inner pages) ────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 7rem 0 4rem;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.page-hero .container { position: relative; z-index: 1; }
.page-hero p { color: rgba(255,255,255,.75); font-size: 1.1rem; max-width: 540px; margin-inline: auto; margin-top: .75rem; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-size: .83rem;
  color: rgba(255,255,255,.55);
  margin-bottom: 1rem;
}
.breadcrumb a { color: rgba(255,255,255,.7); transition: var(--transition); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255,255,255,.4); }

/* ─── Programme Page ─────────────────────────────────── */
.programme-tabs {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}

.tab-btn {
  padding: .65rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .9rem;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid var(--gray-200);
  color: var(--gray-600);
  background: var(--white);
}

.tab-btn.active, .tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(11,61,145,.06);
}

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn .4s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.curriculum-grid { display: grid; gap: 1.5rem; }

.curriculum-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition);
}

.curriculum-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.curriculum-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.curriculum-header h4 { color: var(--white); font-size: 1rem; }
.curriculum-header .badge { background: rgba(255,255,255,.2); color: white; }

.curriculum-body { padding: 1.25rem 1.5rem; }
.curriculum-body p { font-size: .9rem; margin-bottom: 1rem; }

.curriculum-skills {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.skill-tag {
  padding: .3rem .75rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  background: var(--gray-100);
  color: var(--gray-700, #374151);
  border: 1px solid var(--gray-200);
}

/* ─── Établissements (B2B) Page ──────────────────────── */
.pricing-grid { display: grid; gap: 1.5rem; }

.pricing-card {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(11,61,145,.08);
}

.pricing-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: .3rem 1.25rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-name { font-weight: 700; font-size: 1.1rem; color: var(--dark); }
.pricing-level { font-size: .82rem; color: var(--gray-600); }

.pricing-price {
  margin-block: .5rem;
}
.pricing-amount {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.pricing-period { font-size: .88rem; color: var(--gray-600); margin-top: .2rem; }

.pricing-features { display: flex; flex-direction: column; gap: .6rem; flex: 1; }

.pricing-feature {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .9rem;
  color: var(--gray-800);
}

.pricing-feature .check {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(39,174,96,.12);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-feature .cross {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  flex-shrink: 0;
}

.pricing-card .btn { margin-top: auto; }

/* ─── FAQ ────────────────────────────────────────────── */
.faq-list { display: flex; flex-direction: column; gap: .75rem; }

.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open { border-color: var(--primary); }

.faq-question {
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--dark);
  font-size: .95rem;
}

.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon { background: var(--primary); color: white; transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s ease;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: .92rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.faq-item.open .faq-answer { max-height: 400px; }

/* ─── Contact Page ───────────────────────────────────── */
.contact-grid { display: grid; gap: 2.5rem; }

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.contact-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: rgba(11,61,145,.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-card h4 { color: var(--dark); font-size: .95rem; margin-bottom: .25rem; }
.contact-card p  { font-size: .88rem; }
.contact-card a  { color: var(--primary); font-weight: 600; font-size: .9rem; }

/* Form */
.form-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.form-card h3 {
  color: var(--dark);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.form-group { margin-bottom: 1.25rem; }

.form-row { display: grid; gap: 1rem; }

.form-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: .4rem;
}

.form-label.required::after {
  content: ' *';
  color: #E74C3C;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: .75rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: .95rem;
  color: var(--dark);
  background: var(--bg);
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(11,61,145,.08);
}

.form-textarea { resize: vertical; min-height: 130px; }

.form-select { cursor: pointer; }

.form-error {
  display: none;
  font-size: .8rem;
  color: #E74C3C;
  margin-top: .3rem;
}

.form-input.error, .form-textarea.error { border-color: #E74C3C; }
.form-input.error + .form-error { display: block; }

.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success .success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.form-success h4 { color: var(--success); margin-bottom: .5rem; }
.form-success p  { font-size: .9rem; }

/* ─── About Page ─────────────────────────────────────── */
.team-grid { display: grid; gap: 1.5rem; }

.team-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.team-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.team-name { font-weight: 700; color: var(--dark); margin-bottom: .25rem; }
.team-role { font-size: .85rem; color: var(--secondary); font-weight: 600; margin-bottom: .75rem; }
.team-bio  { font-size: .88rem; color: var(--gray-600); line-height: 1.6; }

.values-grid { display: grid; gap: 1.5rem; }

.value-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.value-card:hover { box-shadow: var(--shadow); border-color: transparent; }

.value-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.value-card h4 { color: var(--dark); margin-bottom: .5rem; }
.value-card p  { font-size: .9rem; }

/* ─── Page loader ────────────────────────────────────── */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity .5s ease, visibility .5s ease;
}

.page-loader.hidden { opacity: 0; visibility: hidden; }

.loader-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  color: white;
}

.loader-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  animation: loader-bounce .8s ease-in-out infinite alternate;
}

@keyframes loader-bounce {
  from { transform: scale(.9) translateY(0); }
  to   { transform: scale(1) translateY(-8px); }
}

.loader-bar {
  width: 160px; height: 3px;
  background: rgba(255,255,255,.2);
  border-radius: 999px;
  overflow: hidden;
}

.loader-progress {
  height: 100%;
  background: var(--secondary);
  border-radius: 999px;
  animation: loader-progress 1.2s ease-in-out infinite;
}

@keyframes loader-progress {
  0%   { width: 0%; margin-left: 0; }
  50%  { width: 60%; margin-left: 20%; }
  100% { width: 0%; margin-left: 100%; }
}

/* ─── Scroll animations ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* ─── Responsive — Tablet (≥ 768px) ─────────────────── */
@media (min-width: 768px) {
  .grid-2  { grid-template-columns: repeat(2, 1fr); }
  .grid-3  { grid-template-columns: repeat(3, 1fr); }
  .grid-4  { grid-template-columns: repeat(2, 1fr); }

  .stats-grid    { grid-template-columns: repeat(2, 1fr); }
  .feature-list  { gap: 2rem; }
  .pricing-grid  { grid-template-columns: repeat(2, 1fr); }
  .curriculum-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid     { grid-template-columns: repeat(2, 1fr); }
  .values-grid   { grid-template-columns: repeat(2, 1fr); }
  .contact-grid  { grid-template-columns: 1fr 1.5fr; }
  .form-row      { grid-template-columns: repeat(2, 1fr); }

  .hero-stats    { max-width: 500px; }

  .footer-grid   { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Responsive — Desktop (≥ 1024px) ───────────────── */
@media (min-width: 1024px) {
  .nav-links  { display: flex; }
  .nav-cta    { display: flex; }
  .nav-toggle { display: none; }

  .grid-4     { grid-template-columns: repeat(4, 1fr); }
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .curriculum-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid     { grid-template-columns: repeat(3, 1fr); }
  .values-grid   { grid-template-columns: repeat(3, 1fr); }

  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  .hero-visual { display: block; }

  .features-content {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.5fr; }
}

/* ─── Animations delay helpers ───────────────────────── */
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }
.delay-4 { transition-delay: .4s; }
.delay-5 { transition-delay: .5s; }