:root {
  --bg: #000000;
  --fg: #ffffff;
  --fg-dim: #b3b3b3;
  --fg-faint: #7a7a7a;
  --line: #232323;
  --panel: #0c0c0c;

  --c-blue: #3b82f6;
  --c-violet: #8b3fe0;
  --c-magenta: #e0299e;
  --c-red: #ef4444;
  --c-orange: #f59e0b;
  --c-green: #65c243;

  --c-teal: #2fe6b0;
  --c-orange-accent: #f5a840;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-w: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
}

h1, h2, h3 {
  font-weight: 300;
  letter-spacing: 0.04em;
  margin: 0 0 16px;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-transform: uppercase;
}

h3 {
  font-size: 1.1rem;
  letter-spacing: 0.03em;
}

p {
  color: var(--fg-dim);
  margin: 0 0 16px;
}

.lead {
  font-size: 1.05rem;
  max-width: 62ch;
}

.eyebrow {
  display: inline-block;
  color: var(--c-teal);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  margin-bottom: 12px;
}

/* ---------- Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
  border-bottom-color: var(--c-teal);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  overflow: hidden;
  text-align: center;
}

.wave-hero {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.9;
}

.wave-hero svg {
  width: min(1100px, 100%);
  height: auto;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(1.8rem, 5.5vw, 3.4rem);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.hero-subtitle {
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  text-decoration: none;
  padding: 14px 32px;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: transform 0.2s, opacity 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(90deg, var(--c-blue), var(--c-magenta), var(--c-orange));
  color: #000;
  font-weight: 400;
}

.btn-outline {
  border: 1px solid var(--line);
  color: var(--fg);
}

.btn-outline:hover {
  border-color: var(--fg-dim);
}

/* ---------- Sections ---------- */

.section {
  padding: 88px 0;
}

.wave-divider {
  display: flex;
  justify-content: center;
  opacity: 0.5;
}

.wave-divider svg {
  width: min(900px, 90%);
  height: auto;
}

/* Apercu */

.apercu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.apercu-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 32px;
  background: var(--panel);
  transition: border-color 0.2s, transform 0.2s;
}

.apercu-card:hover {
  border-color: var(--fg-faint);
  transform: translateY(-2px);
}

.apercu-card h2 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.apercu-link {
  color: var(--c-teal);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

/* Tag list */

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0 0 40px;
}

.tag-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--fg-dim);
}

.info-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.price-tag {
  color: var(--c-orange-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.price-tag--pending {
  color: var(--fg-faint);
  font-size: 0.8rem;
  text-transform: none;
  letter-spacing: 0.02em;
}

/* Materiel */

.materiel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.materiel-item {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

/* Formations */

.formations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.formation-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  background: var(--panel);
}

.formats-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  border-top: 1px solid var(--line);
}

.formats-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--fg-dim);
}

.formats-list li span:last-child {
  color: var(--fg);
}

/* References gallery */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.gallery-placeholder {
  aspect-ratio: 4 / 3;
  border: 1px dashed var(--line);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
  padding: 24px;
}

.gallery-icon {
  font-size: 1.6rem;
  color: var(--fg-faint);
}

.gallery-placeholder p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--fg-faint);
}

/* Contact */

.contact-process {
  font-size: 0.9rem;
  color: var(--fg-faint);
  max-width: 60ch;
}

.contact-forms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 32px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  background: var(--panel);
}

.contact-form h3 {
  margin-bottom: 4px;
}

.form-row label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 8px;
}

input,
select,
textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.95rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--c-teal);
}

textarea {
  resize: vertical;
}

.contact-form .btn {
  align-self: flex-start;
  border: none;
  cursor: pointer;
}

.contact-direct {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.contact-link {
  text-decoration: none;
  color: var(--c-orange-accent);
  font-size: 1rem;
}

.contact-zone {
  margin-top: 20px;
  font-size: 0.85rem;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0;
}

.footer-legal {
  font-size: 0.72rem;
  color: var(--fg-faint);
  margin-bottom: 16px;
}

.footer-legal p {
  margin: 0 0 6px;
  color: inherit;
}

.footer-legal p:last-child {
  margin-bottom: 0;
}

.footer-legal a {
  color: var(--c-teal);
  text-decoration: underline;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--fg-faint);
}

.footer-logo {
  letter-spacing: 0.1em;
}

/* ---------- Waveform glow animation ---------- */

.wave-hero .wave-glow {
  animation: wave-pulse 4s ease-in-out infinite;
}

@keyframes wave-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 0.8; }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .wave-hero .wave-glow {
    animation: none;
  }
}