:root {
  --bg: #08080f;
  --bg-panel: #12121f;
  --bg-panel-2: #171728;
  --border: #2a2a44;
  --border-soft: #1c1c30;
  --text: #e8e8f0;
  --text-dim: #9494b0;
  --accent: #f5a623;
  --accent-glow: #ffd27a;
  --corona: #ffe9c2;
  --danger: #e05252;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 8px 24px -12px rgba(0, 0, 0, 0.6);
  --shadow-card-hover: 0 16px 40px -14px rgba(245, 166, 35, 0.25);
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  position: relative;
}

/* Fond étoilé statique + halo qui respire doucement, en fixed pour rester
   stable au scroll sur toutes les pages. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, #1c1c3a 0%, transparent 60%),
    radial-gradient(1px 1px at 12% 22%, #fff 100%, transparent),
    radial-gradient(1px 1px at 78% 15%, #fff 100%, transparent),
    radial-gradient(1px 1px at 45% 68%, #fff 100%, transparent),
    radial-gradient(1px 1px at 88% 78%, #fff 100%, transparent),
    radial-gradient(1px 1px at 25% 85%, #fff 100%, transparent),
    radial-gradient(1px 1px at 62% 42%, #fff 100%, transparent),
    radial-gradient(1px 1px at 8% 55%, #fff 100%, transparent),
    radial-gradient(1px 1px at 95% 35%, #fff 100%, transparent),
    var(--bg);
  opacity: 0.55;
  animation: twinkle 6s ease-in-out infinite alternate;
}

@keyframes twinkle {
  from { opacity: 0.4; }
  to { opacity: 0.75; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 3px var(--corona), 0 0 14px 3px var(--accent-glow); }
  50% { box-shadow: 0 0 0 3px var(--corona), 0 0 22px 7px var(--accent-glow); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid var(--border-soft);
  background: rgba(8, 8, 15, 0.7);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
header.site-header.scrolled {
  border-color: var(--border);
  box-shadow: 0 8px 24px -16px rgba(0, 0, 0, 0.8);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
  transition: transform 0.25s var(--ease);
}
.brand:hover { transform: translateY(-1px); }

.brand .disc {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #050508;
  animation: pulseGlow 3.5s ease-in-out infinite;
}

nav.site-nav a {
  position: relative;
  color: var(--text-dim);
  text-decoration: none;
  margin-left: 22px;
  font-size: 0.95rem;
  transition: color 0.2s var(--ease);
  padding-bottom: 3px;
}
nav.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 1.5px;
  background: var(--accent);
  transition: right 0.25s var(--ease);
}
nav.site-nav a:hover, nav.site-nav a.active { color: var(--accent); }
nav.site-nav a:hover::after, nav.site-nav a.active::after { right: 0; }

main { max-width: 1100px; margin: 0 auto; padding: 24px 20px 60px; }

h1, h2, h3 { color: var(--text); letter-spacing: -0.01em; }
main h1 {
  background: linear-gradient(135deg, var(--text) 30%, var(--accent-glow));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
a { color: var(--accent); transition: color 0.2s var(--ease); }
a:hover { color: var(--accent-glow); }

.panel {
  background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 18px 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  opacity: 0;
  transform: translateY(16px);
}
.panel.in-view {
  animation: fadeInUp 0.6s var(--ease) forwards;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #1a1200;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
  transition: background 0.2s var(--ease), transform 0.15s var(--ease), box-shadow 0.2s var(--ease);
}
.btn:hover { background: var(--accent-glow); transform: translateY(-2px); box-shadow: 0 8px 20px -8px rgba(245, 166, 35, 0.5); }
.btn:active { transform: translateY(0); }
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.secondary:hover { background: rgba(245, 166, 35, 0.08); border-color: var(--accent); box-shadow: none; }

.eclipse-list { display: grid; gap: 12px; }
.eclipse-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
  opacity: 0;
  animation: fadeInUp 0.5s var(--ease) forwards;
}
.eclipse-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px) scale(1.01);
  box-shadow: var(--shadow-card-hover);
  background: var(--bg-panel-2);
}
.tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 3px 8px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: transform 0.2s var(--ease);
}
.eclipse-card:hover .tag { transform: scale(1.05); }
.tag.totale { color: var(--accent); border-color: var(--accent); }
.tag.annulaire { color: #7ab8ff; border-color: #7ab8ff; }

#cesiumContainer {
  width: 100%;
  height: 62vh;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-card);
  opacity: 0;
  animation: fadeInUp 0.7s var(--ease) 0.1s forwards;
}

.visibility-badge {
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.85rem;
  transition: transform 0.2s var(--ease);
}
.visibility-badge.visible { background: rgba(245,166,35,.15); color: var(--accent); }
.visibility-badge.totality { background: rgba(255,210,122,.2); color: var(--accent-glow); animation: pulseGlow 2.4s ease-in-out infinite; }
.visibility-badge.hidden { background: rgba(255,255,255,.05); color: var(--text-dim); }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.gallery img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  opacity: 0;
  animation: fadeInUp 0.5s var(--ease) forwards;
}
.gallery img:hover { transform: scale(1.05); box-shadow: var(--shadow-card-hover); border-color: var(--accent); }

.upload-form { display: grid; gap: 10px; max-width: 480px; }
.upload-form input, .upload-form textarea, .upload-form select {
  background: #0e0e1c;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.upload-form input:focus, .upload-form textarea:focus, .upload-form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}
.dropzone:hover { border-color: var(--accent-glow); color: var(--accent-glow); }
.dropzone.drag { border-color: var(--accent); color: var(--accent); background: rgba(245, 166, 35, 0.06); }

.lightbox {
  position: fixed; inset: 0; background: rgba(0,0,0,.85);
  display: none; align-items: center; justify-content: center; z-index: 50;
  opacity: 0;
  transition: opacity 0.25s var(--ease);
}
.lightbox.open { display: flex; opacity: 1; }
.lightbox img {
  max-width: 90vw; max-height: 85vh; border-radius: 10px;
  transform: scale(0.92);
  transition: transform 0.25s var(--ease);
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.8);
}
.lightbox.open img { transform: scale(1); }

.muted { color: var(--text-dim); font-size: 0.9rem; }

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}