/* ================================================================
   Vidéo – Stylesheet — ÉDITION FUTURISTE (Interface Holographique)
   Couleurs conservées : #3cb6e6 (cyan), #1940c0 (dark blue), #2563eb (primary)
   Motifs : circuits, scan-lines, coins HUD, halos lumineux
   Typographie : Orbitron (titres), Rajdhani (corps), Share Tech Mono (nav)
   ================================================================ */

@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@500;600;700;800;900&family=Rajdhani:wght@400;500;600;700&family=Share+Tech+Mono&display=swap");

:root {
  /* Palette d'origine conservée */
  --primary: #2563eb;
  --primary-soft: #16254d;
  --secondary: #3cb6e6;
  --bg: #0a1230;
  --white: #ffffff;
  --text: #e4ecff;
  --text-soft: #a3b4e0;
  --radius: 4px; /* coins carrés, style terminal */
  --shadow: 0 8px 30px rgba(37, 99, 235, 0.22);

  /* Dérivés futuristes */
  --bg-panel: rgba(15, 26, 64, 0.55);
  --bg-panel-hover: rgba(20, 34, 84, 0.7);
  --glass-border: rgba(60, 182, 230, 0.22);
  --glass-border-strong: rgba(60, 182, 230, 0.45);
  --glow-cyan: 0 0 18px rgba(60, 182, 230, 0.45);
  --glow-primary: 0 0 24px rgba(37, 99, 235, 0.5);

  /* Motifs (patterns) */
  --pat-circuit: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96' viewBox='0 0 96 96'%3E%3Cpath d='M8 8h24v12h20v8h8v16h8v12h8' fill='none' stroke='%233cb6e6' stroke-opacity='0.07' stroke-width='1'/%3E%3Ccircle cx='8' cy='8' r='3' fill='%233cb6e6' fill-opacity='0.12'/%3E%3Ccircle cx='76' cy='8' r='3' fill='%233cb6e6' fill-opacity='0.12'/%3E%3Ccircle cx='76' cy='88' r='3' fill='%233cb6e6' fill-opacity='0.12'/%3E%3Cpath d='M88 88H64v-12H44v-8h-8V52h-8V40H8' fill='none' stroke='%233cb6e6' stroke-opacity='0.07' stroke-width='1'/%3E%3C/svg%3E");
  --pat-hex: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='100' viewBox='0 0 56 100'%3E%3Cpath d='M28 66L0 50L0 16L28 0L56 16L56 50L28 66L28 100' fill='none' stroke='%233cb6e6' stroke-opacity='0.08' stroke-width='1'/%3E%3C/svg%3E");
  --pat-dots: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Ccircle cx='1' cy='1' r='1' fill='%233cb6e6' fill-opacity='0.12'/%3E%3C/svg%3E");
  --pat-scan: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath d='M0 0h8v1H0z' fill='%233cb6e6' fill-opacity='0.03'/%3E%3C/svg%3E");
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Rajdhani", "Roboto", sans-serif;
  background-color: var(--bg);
  background-image: var(--pat-circuit);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
}

h1,
h2,
h3,
.logo,
.nav-logo {
  font-family: "Orbitron", sans-serif;
}

.mono,
code {
  font-family: "Share Tech Mono", monospace;
}

/* ── Logo / Span ──────────────────────────────────────────── */
.span1 {
  font-family: "Orbitron", sans-serif;
  font-weight: 800;
  color: #3cb6e6;
  text-shadow: 0 0 14px rgba(60, 182, 230, 0.55);
  letter-spacing: 2px;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}
.span2 {
  font-family: "Orbitron", sans-serif;
  font-weight: 800;
  color: #1940c0;
  letter-spacing: 2px;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}
.span1:hover {
  color: #1940c0;
  text-shadow: 0 0 18px rgba(60, 182, 230, 0.85);
}
.span2:hover {
  color: #3cb6e6;
  text-shadow: 0 0 14px rgba(60, 182, 230, 0.55);
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(60, 182, 230, 0.55);
  letter-spacing: 2px;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--cyan);
  letter-spacing: 1px;
  text-shadow: 0 0 12px rgba(60, 182, 230, 0.45);
}

/* ── Header / Nav ─────────────────────────────────────────── */
header {
  padding: 1.2rem 6%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 18, 48, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 rgba(60, 182, 230, 0.15), 0 4px 24px rgba(0, 0, 0, 0.35);
  position: relative;
}
header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    #3cb6e6 25%,
    #2563eb 75%,
    transparent
  );
  opacity: 0.6;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.9rem 1.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

nav a,
.header nav a {
  position: relative;
  text-decoration: none;
  margin-left: 2rem;
  color: var(--text-soft);
  font-family: "Share Tech Mono", monospace;
  font-weight: 400;
  font-size: 13.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 0;
  transition: color 0.25s cubic-bezier(0.23, 1, 0.32, 1), text-shadow 0.25s ease;
}

/* Barre lumineuse : remplace le soulignement classique */
nav a::after,
.header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3cb6e6, #2563eb);
  box-shadow: 0 0 8px rgba(60, 182, 230, 0.7);
  transition: width 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}

nav a:hover,
nav a.active,
.header nav a:hover,
.header nav a.active {
  color: #3cb6e6;
  text-shadow: 0 0 10px rgba(60, 182, 230, 0.45);
}
nav a:hover::after,
nav a.active::after,
.header nav a:hover::after,
.header nav a.active::after {
  width: 100%;
}

.nav-link.active::after {
  width: 100%;
}

/* ── Videos Section ───────────────────────────────────────── */
.videos-section {
  padding: 4rem 6%;
  background-image: var(--pat-scan);
}

.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.video-card {
  background: var(--bg-panel);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  padding: 1rem;
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.18);
  position: relative;
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1),
    box-shadow 0.3s ease, border-color 0.3s ease;
}
/* Coins HUD en L (haut-gauche + bas-droite) */
.video-card::before,
.video-card::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: #3cb6e6;
  border-style: solid;
  pointer-events: none;
  transition: border-color 0.25s ease;
}
.video-card::before {
  top: 10px;
  left: 10px;
  border-width: 2px 0 0 2px;
}
.video-card::after {
  bottom: 10px;
  right: 10px;
  border-width: 0 2px 2px 0;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 45px rgba(60, 182, 230, 0.25), var(--glow-cyan);
  border-color: var(--glass-border-strong);
}
.video-card:hover::before,
.video-card:hover::after {
  border-color: rgba(60, 182, 230, 0.9);
}

.video-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid rgba(60, 182, 230, 0.12);
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3);
}

.video-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.video-card h3 {
  margin-top: 1rem;
  font-family: "Orbitron", sans-serif;
  font-size: 1.1rem;
  color: var(--text);
  text-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
}

.video-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin-top: 0.4rem;
}

/* ── Container & Grid génériques ──────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 20px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  margin-top: 4rem;
  padding: 2rem;
  text-align: center;
  background: rgba(8, 14, 40, 0.9);
  background-image: var(--pat-dots);
  color: var(--text-soft);
  box-shadow: 0 -1px 0 rgba(60, 182, 230, 0.2), 0 8px 30px rgba(0, 0, 0, 0.35);
  border-top: 1px solid var(--glass-border);
  position: relative;
}
.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    #3cb6e6 30%,
    #2563eb 70%,
    transparent
  );
}

.footer p {
  margin: 0;
  letter-spacing: 0.3px;
}

/* ── Animation d'entrée en cascade ────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .video-card {
    animation: card-rise 0.45s cubic-bezier(0.23, 1, 0.32, 1) backwards;
  }
  .video-card:nth-child(2) {
    animation-delay: 60ms;
  }
  .video-card:nth-child(3) {
    animation-delay: 120ms;
  }
  .video-card:nth-child(4) {
    animation-delay: 180ms;
  }
  .video-card:nth-child(5) {
    animation-delay: 240ms;
  }
  .video-card:nth-child(6) {
    animation-delay: 300ms;
  }

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

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 0.6rem;
    position: relative;
  }

  .menu-toggle {
    display: flex;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
  }

  .menu-toggle .bar {
    width: 25px;
    height: 3px;
    background-color: white;
    border-radius: 2px;
    transition: 0.3s;
  }

  nav,
  .navbar,
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #0b1329;
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
    gap: 1rem;
    overflow-x: visible;
    white-space: normal;
  }

  nav.active,
  .navbar.active,
  .nav-links.active {
    display: flex;
  }

  nav a,
  .nav-links a,
  .header nav a {
    font-size: 16px;
    margin-left: 0;
    padding: 8px 10px;
  }

  .nav-container {
    flex-direction: column;
    gap: 0.8rem;
  }

  nav ul {
    flex-direction: column;
    gap: 1rem;
    list-style: none;
  }

  .hero-content h1 {
    font-size: 1.85rem;
  }

  .ressource-grid,
  .videos-grid {
    grid-template-columns: 1fr;
  }
}