/* ClassroomViewer — Design System */
:root {
  --navy: #0a1628;
  --navy-light: #0f2137;
  --navy-card: rgba(15, 33, 55, 0.72);
  --green: #22c55e;
  --green-bright: #8cc63f;
  --cyan: #22d3ee;
  --cyan-deep: #00aeef;
  --white: #f8fafc;
  --muted: #94a3b8;
  --border: rgba(34, 211, 238, 0.18);
  --glow-green: 0 0 24px rgba(34, 197, 94, 0.35);
  --glow-cyan: 0 0 24px rgba(34, 211, 238, 0.35);
  --radius: 16px;
  --radius-lg: 24px;
  --font: 'Plus Jakarta Sans', system-ui, sans-serif;
  --header-h: 72px;
  --transition: 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--white);
  background: var(--navy);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(34, 197, 94, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 10%, rgba(34, 211, 238, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(0, 174, 239, 0.06), transparent);
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green); }

.container {
  width: min(1200px, 100% - 2rem);
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.container--narrow { width: min(680px, 100% - 2rem); }

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--green);
  color: var(--navy);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  z-index: 9999;
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
}

.brand-icon { flex-shrink: 0; filter: drop-shadow(var(--glow-green)); }

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-classroom { color: var(--cyan); }
.brand-viewer { color: var(--green-bright); }

.brand-tagline {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a:not(.btn) {
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:not(.btn):hover { color: var(--cyan); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--cyan-deep), var(--green));
  color: var(--navy);
  box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
  box-shadow: var(--glow-green), 0 8px 24px rgba(0, 0, 0, 0.3);
  color: var(--navy);
}

.btn-outline {
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-outline:hover {
  background: rgba(34, 211, 238, 0.1);
  color: var(--cyan);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); color: var(--white); }

.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn-lg { padding: 0.9rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }

.glass-card {
  background: var(--navy-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

.hero {
  position: relative;
  padding: 4rem 0 5rem;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/hero-reference.png') center/cover no-repeat;
  opacity: 0.15;
  mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-content { max-width: 560px; }

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-bright);
  margin: 0 0 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  letter-spacing: -0.03em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--green-bright), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0 0 2rem;
}

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

.hero-visual {
  perspective: 1200px;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-3d-scene {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 400px;
  transform-style: preserve-3d;
  transition: transform 0.1s linear;
}

.float-card {
  position: absolute;
  padding: 1rem 1.25rem;
  width: 220px;
  transform-style: preserve-3d;
}

.float-card--1 { top: 10%; left: 5%; animation: float1 6s ease-in-out infinite; }
.float-card--2 { top: 35%; right: 0; animation: float2 7s ease-in-out infinite; }
.float-card--3 { bottom: 8%; left: 15%; animation: float3 5.5s ease-in-out infinite; width: 200px; }

.float-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

.mini-list span {
  display: block;
  height: 8px;
  background: rgba(34, 197, 94, 0.3);
  border-radius: 4px;
  margin-bottom: 6px;
  width: 80%;
}

.mini-list span:nth-child(2) { width: 65%; }
.mini-list span:nth-child(3) { width: 90%; }

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.mini-grid i {
  background: rgba(34, 211, 238, 0.15);
  padding: 0.5rem;
  border-radius: 8px;
  text-align: center;
  color: var(--cyan);
  font-size: 0.85rem;
}

.mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  height: 60px;
}

.mini-chart .bar {
  flex: 1;
  height: var(--h);
  background: linear-gradient(to top, var(--green), var(--cyan));
  border-radius: 4px 4px 0 0;
  opacity: 0.85;
}

.mini-alert {
  margin: 0;
  font-size: 0.85rem;
  color: var(--green-bright);
}

.hero-fallback-img { border-radius: var(--radius-lg); opacity: 0.9; }

@keyframes float1 {
  0%, 100% { transform: translateY(0) rotateY(-8deg); }
  50% { transform: translateY(-12px) rotateY(-4deg); }
}
@keyframes float2 {
  0%, 100% { transform: translateY(0) rotateY(10deg); }
  50% { transform: translateY(-16px) rotateY(6deg); }
}
@keyframes float3 {
  0%, 100% { transform: translateY(0) rotateY(-5deg); }
  50% { transform: translateY(-10px) rotateY(-2deg); }
}

.section { padding: 5rem 0; position: relative; z-index: 1; }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.section-header p { color: var(--muted); margin: 0; font-size: 1.05rem; }

.section-link { text-align: center; margin-top: 2rem; }
.section-link a { font-weight: 600; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--glow-cyan), 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(34, 211, 238, 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--green-bright);
  margin-bottom: 1rem;
}

.feature-card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.925rem; }

.steps-banner { display: flex; flex-direction: column; gap: 1rem; }

.step-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.75rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0, 100, 180, 0.5), rgba(10, 22, 40, 0.8));
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: inset 0 0 20px rgba(34, 211, 238, 0.08), var(--glow-cyan);
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  color: var(--navy);
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-cyan);
}

.step-title {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.step-icon { font-size: 1.75rem; color: var(--cyan); opacity: 0.85; }

.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

.plan-card {
  padding: 2rem 1.75rem;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}

.plan-card:hover {
  transform: scale(1.02);
  box-shadow: var(--glow-green), 0 16px 48px rgba(0, 0, 0, 0.35);
}

.plan-card--featured {
  border-color: rgba(34, 197, 94, 0.45);
  box-shadow: var(--glow-green);
  transform: scale(1.03);
}

.plan-card--featured:hover { transform: scale(1.05); }

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--green), var(--cyan));
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.plan-card h2, .plan-card h3 { margin: 0 0 0.5rem; font-size: 1.35rem; }

.plan-price {
  font-size: 2rem;
  font-weight: 800;
  margin: 0.5rem 0 0;
  background: linear-gradient(135deg, var(--white), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.plan-period { color: var(--muted); font-size: 0.875rem; margin: 0 0 1.5rem; }

.plan-limits {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  flex: 1;
}

.plan-limits li {
  padding: 0.4rem 0;
  color: var(--muted);
  font-size: 0.925rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.plan-limits i { color: var(--green); width: 18px; }

.how-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.how-step { padding: 1.75rem 1.25rem; text-align: center; }

.how-num {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.15);
  color: var(--cyan);
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.how-step h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.how-step p { margin: 0; color: var(--muted); font-size: 0.875rem; }

.page-hero { padding: 3.5rem 0 2rem; text-align: center; }

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
}

.page-hero p { color: var(--muted); margin: 0; font-size: 1.1rem; }

.table-wrap { overflow-x: auto; padding: 0; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.compare-table th,
.compare-table td {
  padding: 0.875rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.compare-table th:first-child,
.compare-table td:first-child { text-align: left; font-weight: 500; }

.compare-table thead th {
  background: rgba(34, 211, 238, 0.08);
  font-weight: 700;
}

.text-green { color: var(--green); }
.text-muted { color: var(--muted); }

.form-section { padding-top: 1rem; }
.inscription-form { padding: 2rem; }
.form-row { margin-bottom: 1.25rem; }

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.required { color: var(--green-bright); }

.form-row input[type="text"],
.form-row input[type="email"],
.form-row input[type="tel"],
.form-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(10, 22, 40, 0.6);
  color: var(--white);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

.form-row--2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.plan-select-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.plan-select-card { cursor: pointer; }
.plan-select-card input { position: absolute; opacity: 0; pointer-events: none; }

.plan-select-inner {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: rgba(10, 22, 40, 0.5);
  transition: var(--transition);
  text-align: center;
}

.plan-select-inner strong { font-size: 1rem; }
.plan-select-inner span { font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; }

.plan-select-card input:checked + .plan-select-inner {
  border-color: var(--green);
  background: rgba(34, 197, 94, 0.1);
  box-shadow: var(--glow-green);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-weight: 400;
  cursor: pointer;
}

.checkbox-label input { margin-top: 0.25rem; accent-color: var(--green); }

.hp-field {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

.form-alert {
  padding: 1rem;
  border-radius: 10px;
  margin-bottom: 1.25rem;
  font-size: 0.925rem;
}

.form-alert--error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.field-error {
  color: #fca5a5;
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.merci-section { padding: 4rem 0 6rem; }
.merci-card { padding: 3rem 2rem; text-align: center; }

.merci-icon {
  font-size: 4rem;
  color: var(--green);
  margin-bottom: 1rem;
  filter: drop-shadow(var(--glow-green));
}

.merci-card h1 { margin: 0 0 1rem; font-size: 2rem; }
.merci-card p { color: var(--muted); margin: 0 0 1rem; }

.merci-ref code {
  background: rgba(34, 211, 238, 0.15);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  color: var(--cyan);
  font-size: 1.1rem;
}

.merci-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.legal-content { padding: 2.5rem; }
.legal-content h2 { font-size: 1.25rem; margin: 2rem 0 0.75rem; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p { color: var(--muted); }

.final-cta {
  padding: 4rem 0;
  background: linear-gradient(180deg, transparent, rgba(34, 197, 94, 0.06));
  position: relative;
  z-index: 1;
}

.final-cta-inner { text-align: center; }
.final-cta h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 0.75rem; }
.final-cta p { color: var(--muted); margin: 0 0 2rem; }

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
  position: relative;
  z-index: 1;
  background: rgba(10, 22, 40, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand p { color: var(--muted); font-size: 0.9rem; margin: 0.75rem 0 0; }
.footer-icon { width: 40px; height: 40px; }

.site-footer h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin: 0 0 1rem;
}

.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: var(--muted); font-size: 0.9rem; }
.site-footer a:hover { color: var(--white); }

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-bottom p { margin: 0; color: var(--muted); font-size: 0.85rem; }

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-animate] { opacity: 1; transform: none; }
  .hero-3d-scene { transform: none !important; }
  .float-card { animation: none !important; }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-content { max-width: none; margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { min-height: 320px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .plans-grid { grid-template-columns: 1fr; max-width: 400px; margin-inline: auto; }
  .plan-card--featured { transform: none; }
  .how-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav .btn { width: 100%; }
  .features-grid { grid-template-columns: 1fr; }
  .step-bar { grid-template-columns: auto 1fr; border-radius: var(--radius); }
  .step-icon { display: none; }
  .how-grid { grid-template-columns: 1fr; }
  .form-row--2 { grid-template-columns: 1fr; }
  .plan-select-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 2.5rem 0 3rem; min-height: auto; }
  .float-card { width: 180px; padding: 0.875rem; }
}

@media (max-width: 640px) {
  .brand-tagline { display: none; }
}