/* Top Live Stream — light catalog UI */

:root {
  --ink: #14212b;
  --ink-soft: #3d4f5c;
  --muted: #6a7c89;
  --paper: #f3f6f4;
  --paper-2: #e7eee9;
  --line: #c9d5cc;
  --accent: #0f7a6a;
  --accent-ink: #08574b;
  --danger: #a12828;
  --shadow: 0 10px 30px rgba(20, 33, 43, 0.08);
  --font-display: "Outfit", "Avenir Next", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --radius: 10px;
  --shell: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--paper);
  line-height: 1.45;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(15, 122, 106, 0.16), transparent 60%),
    radial-gradient(900px 420px at 90% 0%, rgba(20, 33, 43, 0.08), transparent 55%),
    linear-gradient(180deg, #f7faf8 0%, var(--paper) 40%, #edf2ef 100%);
}

.shell {
  width: min(var(--shell), calc(100% - 2rem));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(243, 246, 244, 0.86);
  border-bottom: 1px solid rgba(201, 213, 204, 0.8);
}

.site-header .shell {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 0.75rem;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
  padding: 0.2rem 0.1rem;
}

.site-nav a.is-active,
.site-nav a:hover {
  color: var(--accent-ink);
}

.search {
  margin-left: auto;
  display: flex;
  gap: 0.4rem;
}

.search input {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  min-width: min(240px, 42vw);
  font: inherit;
  color: var(--ink);
}

.search button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
}

.search button:hover {
  background: var(--accent-ink);
}

.main {
  padding: 1.5rem 0 3rem;
}

.list-intro h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.04em;
  margin: 0 0 0.4rem;
  line-height: 1.1;
}

.lede,
.landing-note {
  margin: 0;
  color: var(--ink-soft);
  max-width: 46rem;
}

.landing-note {
  padding: 0.75rem 0.9rem;
  background: rgba(15, 122, 106, 0.08);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}

.filters {
  margin: 1.25rem 0 1.5rem;
  display: grid;
  gap: 0.75rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.filter-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-right: 0.25rem;
  min-width: 4.5rem;
}

.chip {
  text-decoration: none;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-size: 0.92rem;
  font-weight: 600;
}

.chip:hover,
.chip.is-active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.stream-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.stream-item {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  color: inherit;
  text-decoration: none;
  transition: transform 160ms ease;
}

.stream-item:hover {
  transform: translateY(-2px);
}

.thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.stream-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.stream-thumb--empty {
  background:
    linear-gradient(135deg, #d7e3dc, #b7c9bf);
}

.viewer-count {
  position: absolute;
  left: 0.45rem;
  bottom: 0.45rem;
  background: rgba(20, 33, 43, 0.82);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.stream-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.stream-meta {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.dot {
  opacity: 0.6;
}

.empty-state,
.loading,
.error-banner {
  grid-column: 1 / -1;
  padding: 1.25rem;
  color: var(--ink-soft);
}

.error-banner {
  color: var(--danger);
  background: rgba(161, 40, 40, 0.08);
  border-radius: 8px;
  margin-bottom: 1rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0 2rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.update-indicator {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  background: var(--ink);
  color: #fff;
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
  pointer-events: none;
}

.update-indicator.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  .search {
    width: 100%;
    margin-left: 0;
  }

  .search input {
    flex: 1;
    min-width: 0;
  }

  .filter-label {
    width: 100%;
  }
}