/*
Theme Name: TubeGrid
Theme URI:
Author: Custom build
Description: Lightweight, dependency-free video-grid theme. Homepage groups posts by category into card sections, with hover-to-preview thumbnails and lazy-loaded images. No build step, no external fonts/scripts.
Version: 0.1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: tubegrid
*/

:root {
  --bg: #0e1015;
  --bg-elevated: #171a21;
  --bg-header: rgba(14, 16, 21, 0.92);
  --text: #eef0f3;
  --text-muted: #9aa1ac;
  --accent: #22d3ee;
  --tag-bg: rgba(190, 30, 45, 0.85);
  --duration-bg: rgba(0, 0, 0, 0.72);
  --radius: 10px;
  --container: 1280px;
  --gap: 1.1rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-header);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: .9rem 1.25rem;
  flex-wrap: wrap;
}
.site-logo { font-size: 1.3rem; font-weight: 800; letter-spacing: .02em; }
.site-logo span { color: var(--accent); }

.primary-nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.primary-nav a { font-size: .92rem; color: var(--text-muted); }
.primary-nav a:hover { color: var(--text); }

.site-search { display: flex; }
.site-search input {
  background: var(--bg-elevated);
  border: 1px solid rgba(255, 255, 255, .08);
  color: var(--text);
  padding: .45rem .7rem;
  border-radius: 6px 0 0 6px;
  font-size: .88rem;
  min-width: 160px;
}
.site-search button {
  background: var(--accent);
  color: #04222b;
  border: none;
  padding: 0 .8rem;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  font-weight: 600;
}

/* ---------- Sections ---------- */
.section { padding-top: 2.4rem; }
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}
.section-header h2 { font-size: 1.35rem; margin: 0; }
.section-header a { font-size: .88rem; color: var(--text-muted); }
.section-header a:hover { color: var(--accent); }

/* ---------- Grid & Cards ---------- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}
@media (min-width: 640px)  { .video-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .video-grid { grid-template-columns: repeat(4, 1fr); } }

.video-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
}
.video-card__thumb img,
.video-card__thumb video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.video-card__thumb video {
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease;
}
.video-card__thumb.is-previewing video { opacity: 1; }
.video-card__thumb.is-previewing img { opacity: 0; }

.badge {
  position: absolute;
  bottom: .45rem;
  font-size: .7rem;
  padding: .18rem .45rem;
  border-radius: 5px;
  color: #fff;
  line-height: 1.4;
}
.badge--duration { right: .45rem; background: var(--duration-bg); }
.badge--tag { left: .45rem; background: var(--tag-bg); }

.video-card__title {
  margin: .55rem 0 0;
  font-size: .88rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-card:hover .video-card__title { color: var(--accent); }

/* ---------- Single video page ---------- */
.single-video h1 { font-size: 1.6rem; margin-bottom: .4rem; }
.single-video__meta { color: var(--text-muted); font-size: .85rem; margin-bottom: 1rem; }
.single-video__player { margin-bottom: 1rem; }
.single-video__player iframe,
.single-video__player video { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 3.5rem;
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, .06);
  color: var(--text-muted);
  font-size: .85rem;
}