/* ============================================
   FrostHaus — Ice Explorer
   Design tokens from landing page CSS
   ============================================ */

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

:root {
  --ice-white: #f0f6ff;
  --frost: #c8e0ff;
  --deep-blue: #0a1628;
  --mid-blue: #142244;
  --accent-cyan: #4de8e0;
  --accent-pink: #ff6b9d;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-hover: rgba(255, 255, 255, 0.10);
}

body {
  font-family: 'DM Sans', -apple-system, sans-serif;
  background: var(--deep-blue);
  color: var(--ice-white);
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
}

/* ---- Frost particle background ---- */
.frost-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(77, 232, 224, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 107, 157, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(200, 224, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* ---- Layout ---- */
.page-content { position: relative; z-index: 1; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- Header / Nav ---- */
.site-header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--glass-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ice-white);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-logo span { color: var(--accent-cyan); }

.header-nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.header-nav a {
  color: var(--frost);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.header-nav a:hover { color: var(--accent-cyan); }

.nav-active { color: var(--accent-cyan) !important; }

/* ---- Hero ---- */
.explorer-hero {
  text-align: center;
  padding: 5rem 2rem 4rem;
  max-width: 700px;
  margin: 0 auto;
}

.explorer-hero .tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1.25rem;
}

.explorer-hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--ice-white) 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.explorer-hero p {
  font-size: 1.1rem;
  color: var(--frost);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

/* ---- Favorites bar ---- */
.favorites-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.75rem 0;
}

.favorites-bar .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.fav-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-pink);
  flex-shrink: 0;
}

.fav-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.fav-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 0.25rem 0.75rem;
  font-size: 0.85rem;
  color: var(--ice-white);
  transition: background 0.15s;
}

.fav-chip .remove-fav {
  cursor: pointer;
  opacity: 0.6;
  font-size: 0.9em;
  line-height: 1;
  padding: 0 0 0 0.25rem;
  background: none;
  border: none;
  color: var(--accent-pink);
  transition: opacity 0.15s;
}

.remove-fav:hover { opacity: 1; }

.empty-favs {
  font-size: 0.85rem;
  color: var(--frost);
  opacity: 0.5;
  font-style: italic;
}

/* ---- Grid ---- */
.ice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  padding: 3rem 0 5rem;
}

/* ---- Ice Card ---- */
.ice-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  display: flex;
  flex-direction: column;
}

.ice-card:hover {
  border-color: rgba(77, 232, 224, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card-accent {
  height: 6px;
  width: 100%;
  transition: height 0.2s;
}

.ice-card:hover .card-accent { height: 8px; }

.card-body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-emoji {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.card-origin-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  background: rgba(77, 232, 224, 0.12);
  border: 1px solid rgba(77, 232, 224, 0.2);
  border-radius: 100px;
  padding: 0.25rem 0.65rem;
  white-space: nowrap;
}

.card-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--ice-white);
  line-height: 1.2;
}

.card-description {
  font-size: 0.92rem;
  color: var(--frost);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.card-unique {
  background: rgba(255, 107, 157, 0.08);
  border: 1px solid rgba(255, 107, 157, 0.15);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
}

.card-unique-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-pink);
  margin-bottom: 0.35rem;
}

.card-unique-text {
  font-size: 0.88rem;
  color: var(--ice-white);
  line-height: 1.55;
}

.card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--glass-border);
}

.card-meta-row {
  display: flex;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.card-meta-label {
  color: var(--accent-cyan);
  font-weight: 600;
  flex-shrink: 0;
}

.card-meta-value {
  color: var(--frost);
}

/* ---- Favorite button ---- */
.fav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-family: inherit;
  margin-top: auto;
}

.fav-btn-add {
  background: linear-gradient(135deg, var(--accent-pink) 0%, #e85a8a 100%);
  color: white;
}

.fav-btn-add:hover {
  background: linear-gradient(135deg, #e85a8a 0%, #d04a7a 100%);
  transform: scale(1.02);
}

.fav-btn-remove {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--frost);
}

.fav-btn-remove:hover {
  background: rgba(255, 107, 157, 0.15);
  border-color: rgba(255, 107, 157, 0.3);
  color: var(--accent-pink);
}

.fav-btn.saving {
  opacity: 0.6;
  pointer-events: none;
}

/* ---- Loading state ---- */
#app-loading {
  text-align: center;
  padding: 6rem 2rem;
  color: var(--frost);
  font-size: 1.1rem;
}

#app-loading::after {
  content: '...';
  animation: dots 1.2s infinite;
}

@keyframes dots {
  0%, 20% { content: '.'; }
  40% { content: '..'; }
  60%, 100% { content: '...'; }
}

/* ---- Error state ---- */
.error-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--accent-pink);
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .ice-grid { grid-template-columns: 1fr; }
  .explorer-hero { padding: 3rem 1.5rem 2.5rem; }
  .container { padding: 0 1.25rem; }
  .favorites-bar .container { gap: 0.5rem; }
  .fav-label { font-size: 0.72rem; }
}