/* ===========================================================================
   Groovote — page d'accueil publique (présentation)
   Design sombre « salle de fête », accent vert Spotify + or, autonome
   (aucune dépendance ni image externe : illustrations en CSS/emoji).
   =========================================================================== */

:root {
  --fond: #0b0b0f;
  --surface: #16161e;
  --surface-2: #20202b;
  --texte: #f5f5f7;
  --texte-2: #a0a0ad;
  --accent: #1db954;
  --accent-fonce: #169c46;
  --or: #ffce3d;
  --violet: #7b3ff2;
  --rose: #e2569d;
  --rayon: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fond);
  color: var(--texte);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { margin: 0; line-height: 1.1; }

/* --- Logo ------------------------------------------------------------------ */
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--texte);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-img { height: 34px; width: auto; display: block; }
.logo span { color: var(--accent); }

/* --- Navigation ------------------------------------------------------------ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 6vw;
  background: rgba(11, 11, 15, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-liens { display: flex; align-items: center; gap: 22px; }
.nav-liens a { color: var(--texte-2); font-weight: 600; transition: color 0.2s; }
.nav-liens a:hover { color: var(--texte); }
.btn-nav {
  background: var(--accent);
  color: #04240f !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
}
.btn-nav:hover { background: var(--accent-fonce); }

/* Sélecteur de langue FR / EN / ES */
.lang-switch { display: flex; gap: 4px; }
.lang-switch button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--texte-2);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 5px 9px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-switch button:hover { color: var(--texte); border-color: var(--accent); }
.lang-switch button.actif { background: var(--accent); color: #04240f; border-color: transparent; }

/* Bouton hamburger : visible uniquement sur mobile */
.nav-burger {
  display: none;
  background: transparent;
  border: none;
  color: var(--texte);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 6px;
}

/* --- Navigation responsive (mobile) --------------------------------------- */
@media (max-width: 760px) {
  .nav-burger { display: block; }
  /* La liste de navigation se replie en panneau déroulant sous la barre */
  .nav-liens {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px 6vw 20px;
    background: rgba(11, 11, 15, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    /* Replié par défaut : invisible et non cliquable */
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  }
  .nav-liens.ouvert { transform: none; opacity: 1; visibility: visible; }
  .nav-liens a { padding: 10px 4px; }
  .lang-switch { justify-content: center; padding: 6px 0; }
  .btn-nav { text-align: center; }
}

/* --- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 7vh 6vw 9vh;
  overflow: hidden;
}
.hero-halo {
  position: absolute;
  top: -30%;
  right: -10%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(123, 63, 242, 0.35), transparent 60%),
              radial-gradient(circle at 70% 70%, rgba(29, 185, 84, 0.3), transparent 55%);
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}
.hero-contenu, .hero-visuel { position: relative; z-index: 1; }
.surtitre {
  display: inline-block;
  background: rgba(255, 206, 61, 0.12);
  color: var(--or);
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  margin: 0 0 18px;
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 900; }
.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent), var(--or));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sous {
  color: var(--texte-2);
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: 540px;
  margin: 22px 0 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-cta {
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.15s, background 0.2s;
}
.btn-cta:hover { transform: translateY(-2px); }
.btn-cta.principal {
  background: var(--accent);
  color: #04240f;
  border-color: transparent;
}
.btn-cta.principal:hover { background: var(--accent-fonce); }
.btn-cta.grand { padding: 18px 40px; font-size: 1.1rem; }
.hero-note { margin-top: 26px; color: var(--texte-2); font-size: 0.92rem; letter-spacing: 0.5px; }

/* Illustration hero (écran projeté + téléphone, en CSS) */
.hero-visuel { display: flex; flex-direction: column; align-items: center; gap: 0; }
.hero-mocks { display: flex; justify-content: center; align-items: flex-end; gap: 0; }
.hero-logo {
  width: min(300px, 80%);
  aspect-ratio: 1 / 1;
  object-fit: contain;
  margin-bottom: 24px;
}
.mock-ecran {
  width: 320px;
  max-width: 70vw;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
  transform: rotate(-3deg);
}
.mock-barre { display: flex; gap: 6px; margin-bottom: 12px; }
.mock-barre span { width: 10px; height: 10px; border-radius: 50%; background: #3a3a46; }
.mock-titre { color: var(--accent); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; margin: 0 0 8px; font-weight: 700; }
.mock-piste { display: flex; align-items: center; gap: 10px; background: var(--surface-2); border-radius: 10px; padding: 10px; }
.mock-pochette { font-size: 1.8rem; }
.mock-piste small { color: var(--texte-2); }
.mock-feu { color: var(--or); font-weight: 800; margin: 10px 0; font-size: 1.1rem; }
.mock-label { color: var(--texte-2); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1px; margin: 6px 0 6px; }
.mock-ligne { background: var(--surface-2); border-radius: 8px; padding: 8px 10px; font-size: 0.85rem; margin-bottom: 6px; }
.mock-tel {
  width: 150px;
  background: linear-gradient(160deg, var(--violet), var(--rose));
  border-radius: 22px;
  padding: 16px 14px;
  margin-left: -40px;
  margin-bottom: -20px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
  transform: rotate(5deg);
  position: relative;
}
.mock-tel-titre { font-weight: 800; font-size: 0.85rem; margin: 0 0 12px; }
.mock-chip {
  display: block;
  width: 100%;
  margin-bottom: 8px;
  border: none;
  border-radius: 999px;
  padding: 8px;
  font-weight: 700;
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.92);
  color: #181821;
}
.mock-chip.or { background: var(--or); }
.mock-emojis { font-size: 1.1rem; text-align: center; margin-top: 6px; letter-spacing: 2px; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-sous { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visuel { margin-top: 30px; }
}

/* --- Blocs de section ------------------------------------------------------ */
.bloc { padding: 9vh 6vw; max-width: 1100px; margin: 0 auto; }
.bloc h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  text-align: center;
  margin-bottom: 48px;
}
.fond-doux { max-width: none; background: var(--surface); }
.fond-doux > * { max-width: 1100px; margin-left: auto; margin-right: auto; }

/* Vidéos de démonstration — disposition alternée (vidéo gauche / droite) */
.videos-alternes { display: flex; flex-direction: column; gap: 56px; }
.video-ligne { display: flex; align-items: center; gap: 48px; }
.video-ligne.inverse { flex-direction: row-reverse; }
.bloc-video {
  margin: 0;
  flex: 0 0 58%;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--rayon);
  overflow: hidden;
}
.bloc-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  object-fit: cover;
}
.bloc-video figcaption {
  padding: 14px 16px;
  color: var(--texte-2);
  font-size: 0.95rem;
  text-align: center;
}
.video-texte { flex: 1 1 auto; }
.video-texte h3 { font-size: 1.4rem; font-weight: 800; margin-bottom: 14px; }
.video-texte p { color: var(--texte-2); line-height: 1.65; font-size: 1.05rem; margin: 0; }

/* Comment ça marche */
.etapes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.etape {
  position: relative;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--rayon);
  padding: 30px 24px;
  text-align: center;
}
.etape-num {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 34px;
  height: 34px;
  line-height: 34px;
  border-radius: 50%;
  background: var(--accent);
  color: #04240f;
  font-weight: 800;
}
.etape-emoji { font-size: 2.6rem; display: block; margin: 8px 0 14px; }
.etape h3 { font-size: 1.2rem; margin-bottom: 10px; }
.etape p { color: var(--texte-2); line-height: 1.55; margin: 0; }

/* Grille des fonctions */
.grille-fonctions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.carte-fonction {
  background: var(--surface-2);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--rayon);
  padding: 24px 20px;
  transition: transform 0.18s, border-color 0.2s;
}
.carte-fonction:hover { transform: translateY(-4px); border-color: rgba(29, 185, 84, 0.5); }
.carte-fonction span { font-size: 2rem; }
.carte-fonction h3 { font-size: 1.05rem; margin: 12px 0 8px; }
.carte-fonction p { color: var(--texte-2); font-size: 0.92rem; line-height: 1.5; margin: 0; }

/* Usages */
.usages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.usage {
  border-radius: var(--rayon);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.07);
}
.usage-illu {
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.4rem;
}
.illu-wcs { background: linear-gradient(135deg, #7b3ff2, #1db954); }
.illu-fete { background: linear-gradient(135deg, #e2569d, #ffce3d); }
.illu-club { background: linear-gradient(135deg, #1db954, #0b0b0f); }
.usage h3 { font-size: 1.2rem; margin: 18px 22px 8px; }
.usage p { color: var(--texte-2); line-height: 1.55; margin: 0 22px 22px; }

@media (max-width: 860px) {
  .etapes, .grille-fonctions, .usages { grid-template-columns: 1fr; }
  .video-ligne, .video-ligne.inverse { flex-direction: column; }
  .bloc-video { flex: none; width: 100%; }
}
@media (min-width: 621px) and (max-width: 980px) {
  .grille-fonctions { grid-template-columns: repeat(2, 1fr); }
}

/* Bandeau ludique */
.bandeau-fun {
  background: linear-gradient(90deg, var(--accent), var(--or));
  text-align: center;
  padding: 5vh 6vw;
}
.bandeau-fun p { margin: 0; color: #0b0b0f; font-size: clamp(1.1rem, 2.6vw, 1.7rem); font-weight: 800; }

/* Appel final */
.cta-final { text-align: center; }
.cta-final h2 { margin-bottom: 16px; }

/* Pied de page */
.pied {
  text-align: center;
  padding: 6vh 6vw 8vh;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--texte-2);
}
.pied p { margin: 12px 0 0; font-size: 0.9rem; }
.pied a[href="/connexion"] { color: var(--accent); font-weight: 700; }

/* --- Apparition au défilement ---------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}