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

:root {
  --bg:      #080e1a;
  --card:    #111827;
  --border:  rgba(255,255,255,0.08);
  --text:    #f1f5f9;
  --muted:   #64748b;
  --purple:  #6366f1;
  --pink:    #ec4899;
  --cyan:    #06b6d4;
  --green:   #10b981;
  --r:       1.4rem;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Étoiles animées ────────────────────────────────────── */
.stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* ── Portail ────────────────────────────────────────────── */
.portal {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  gap: 2.5rem;
}

/* ── Header ─────────────────────────────────────────────── */
.portal-header { text-align: center; }

.portal-logo {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 900;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--purple), var(--pink), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.portal-sub {
  color: var(--muted);
  font-size: 1rem;
  margin-top: .5rem;
  letter-spacing: .5px;
}

/* ── Grille cartes ──────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  width: 100%;
  max-width: 760px;
}

/* ── Carte app ──────────────────────────────────────────── */
.app-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.75rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}

.app-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity .3s;
  border-radius: var(--r);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px #00000050;
}

.app-card:hover::before { opacity: 1; }

/* Couleur accent par carte */
.card-converter { border-color: #6366f130; }
.card-converter::before { background: radial-gradient(ellipse at top left, #6366f112, transparent 60%); }
.card-converter:hover    { border-color: #6366f180; box-shadow: 0 16px 48px #6366f120; }

.card-maths { border-color: #ec489930; }
.card-maths::before { background: radial-gradient(ellipse at top left, #ec489912, transparent 60%); }
.card-maths:hover   { border-color: #ec489980; box-shadow: 0 16px 48px #ec489920; }

.card-geo { border-color: #10b98130; }
.card-geo::before { background: radial-gradient(ellipse at top left, #10b98112, transparent 60%); }
.card-geo:hover   { border-color: #10b98180; box-shadow: 0 16px 48px #10b98120; }

.card-prime { border-color: #06b6d430; }
.card-prime::before { background: radial-gradient(ellipse at top left, #06b6d412, transparent 60%); }
.card-prime:hover   { border-color: #06b6d480; box-shadow: 0 16px 48px #06b6d420; }

.card-verbs { border-color: #f59e0b30; }
.card-verbs::before { background: radial-gradient(ellipse at top left, #f59e0b12, transparent 60%); }
.card-verbs:hover   { border-color: #f59e0b80; box-shadow: 0 16px 48px #f59e0b20; }

.card-essence { border-color: #84cc1630; }
.card-essence::before { background: radial-gradient(ellipse at top left, #84cc1612, transparent 60%); }
.card-essence:hover   { border-color: #84cc1680; box-shadow: 0 16px 48px #84cc1620; }

.card-electron { border-color: #38bdf830; }
.card-electron::before { background: radial-gradient(ellipse at top left, #38bdf812, transparent 60%); }
.card-electron:hover   { border-color: #38bdf880; box-shadow: 0 16px 48px #38bdf820; }

.card-flagquest { border-color: #f43f5e30; }
.card-flagquest::before { background: radial-gradient(ellipse at top left, #f43f5e12, transparent 60%); }
.card-flagquest:hover   { border-color: #f43f5e80; box-shadow: 0 16px 48px #f43f5e20; }

.card-cosmos { border-color: #8b5cf630; }
.card-cosmos::before { background: radial-gradient(ellipse at top left, #8b5cf612, transparent 60%); }
.card-cosmos:hover   { border-color: #8b5cf680; box-shadow: 0 16px 48px #8b5cf620; }

.card-rockets { border-color: #fb923c30; }
.card-rockets::before { background: radial-gradient(ellipse at top left, #fb923c12, transparent 60%); }
.card-rockets:hover   { border-color: #fb923c80; box-shadow: 0 16px 48px #fb923c20; }

/* Icône */
.card-icon {
  font-size: 2.8rem;
  flex-shrink: 0;
  line-height: 1;
}

/* Corps */
.card-body { flex: 1; }

.card-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: .4rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.card-grade {
  font-size: .7rem;
  background: #ec489930;
  color: #f9a8d4;
  border: 1px solid #f9a8d450;
  border-radius: 2rem;
  padding: .15rem .55rem;
  font-weight: 700;
}

.card-desc {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: .75rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.card-tags span {
  font-size: .72rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 2rem;
  padding: .2rem .65rem;
  color: var(--muted);
}

/* Flèche */
.card-arrow {
  font-size: 1.3rem;
  color: var(--muted);
  transition: transform .2s, color .2s;
  flex-shrink: 0;
}

.app-card:hover .card-arrow {
  transform: translateX(5px);
  color: var(--text);
}

/* ── Footer ─────────────────────────────────────────────── */
.portal-footer {
  color: var(--muted);
  font-size: .8rem;
  margin-top: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  padding-bottom: 1.5rem;
}
.footer-copy { font-weight: 700; letter-spacing: .3px; }

.footer-disclaimer {
  font-size: .72rem;
  line-height: 1.5;
  color: #94a3b8;
  background: rgba(251,191,36,0.06);
  border: 1px solid rgba(251,191,36,0.18);
  border-radius: .8rem;
  padding: .5rem .8rem;
}

.footer-cat {
  font-size: .75rem;
  line-height: 1.5;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  flex-wrap: wrap;
}
.footer-cat-icon {
  font-size: 1.4rem;
  display: inline-block;
  animation: cat-bob 2.4s ease-in-out infinite;
}
@keyframes cat-bob {
  0%,100% { transform: translateY(0) rotate(-4deg); }
  50%     { transform: translateY(-4px) rotate(4deg); }
}