/* Personal video portfolio - base styles */

:root {
  --accent: #4f8cff;
  --radius: 14px;
  --radius-sm: 9px;
  --maxw: 1220px;
  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, .45);
  --shadow-sm: 0 6px 20px rgba(0, 0, 0, .25);
}

html[data-theme="dark"] {
  --bg: #0b0e13;
  --bg-soft: #121722;
  --bg-card: #151b26;
  --bg-elev: #1a212e;
  --border: #242c3a;
  --border-soft: #1d2431;
  --text: #e8edf6;
  --text-soft: #a9b4c6;
  --muted: #7b8798;
  --scrim: rgba(6, 9, 14, .82);
}

html[data-theme="light"] {
  --bg: #f4f6fa;
  --bg-soft: #ffffff;
  --bg-card: #ffffff;
  --bg-elev: #ffffff;
  --border: #e2e7ef;
  --border-soft: #edf1f7;
  --text: #131924;
  --text-soft: #47536a;
  --muted: #76839a;
  --scrim: rgba(18, 24, 36, .62);
  --shadow-lg: 0 24px 60px rgba(20, 30, 50, .18);
  --shadow-sm: 0 6px 20px rgba(20, 30, 50, .08);
}

* { box-sizing: border-box; }

/* The `hidden` attribute must always win. Without this, any author rule that
   sets `display` (e.g. .modal{display:grid}, .app-shell{display:flex}) would
   override the browser default [hidden]{display:none} and stay on screen. */
[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.3; margin: 0; font-weight: 650; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

.muted { color: var(--muted); }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }

.brand-mark {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #b06bff));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 35%, transparent);
}

.brand-text { min-width: 0; }
.brand-text h1 { font-size: 18px; letter-spacing: .2px; }
.brand-text p { margin: 1px 0 0; font-size: 12.5px; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-soft);
  border-radius: 10px;
  cursor: pointer;
  transition: .18s;
}
.icon-btn:hover { color: var(--text); border-color: var(--accent); }

html[data-theme="dark"] .ico-sun { display: none; }
html[data-theme="light"] .ico-moon { display: none; }

/* ---------------------------------------------------------------- intro */
.intro-card {
  margin: 26px 0 20px;
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}
.intro-text { margin: 0; color: var(--text-soft); white-space: pre-line; }

.contact-row {
  display: flex; flex-wrap: wrap; gap: 9px;
  margin-top: 13px;
}
.contact-chip {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--text-soft);
}

/* ---------------------------------------------------------------- toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.filters { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-soft);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: .16s;
}
.chip:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
.chip .count { opacity: .62; margin-left: 5px; font-size: 11.5px; }

.search-box {
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px;
  height: 38px;
  min-width: 210px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
}
.search-box:focus-within { border-color: var(--accent); }
.search-box input {
  flex: 1; min-width: 0;
  border: 0; background: transparent; outline: none;
  color: var(--text); font-family: inherit; font-size: 13.5px;
}

/* ---------------------------------------------------------------- grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(298px, 1fr));
  gap: 20px;
  padding-bottom: 40px;
}

.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  padding: 0;
  font-family: inherit;
  color: inherit;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); border-color: color-mix(in srgb, var(--accent) 42%, var(--border-soft)); }
.card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-elev);
  overflow: hidden;
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s; }
.card:hover .card-cover img { transform: scale(1.04); }

.card-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.35));
  opacity: 0;
  transition: opacity .2s;
}
.card:hover .card-play { opacity: 1; }
.card-play span {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255,255,255,.92);
  color: #10151f;
  box-shadow: 0 8px 22px rgba(0,0,0,.35);
}

.badge {
  display: inline-block;
  font-size: 11.5px;
  padding: 2px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
  color: var(--text-soft);
  white-space: nowrap;
}

.card-badge { position: absolute; top: 10px; left: 10px; background: rgba(10,14,20,.72); border-color: rgba(255,255,255,.18); color: #eaf0fa; backdrop-filter: blur(6px); }

.card-flag {
  position: absolute; top: 10px; right: 10px;
  font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 999px;
  background: rgba(255, 196, 84, .92); color: #2a1e00;
}
.card-flag.no-video { background: rgba(255, 255, 255, .86); color: #3a4252; }

.card-body { padding: 13px 15px 15px; }
.card-title { font-size: 15.5px; font-weight: 620; margin: 0 0 4px; }
.card-summary {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-tags { margin-top: 9px; display: flex; flex-wrap: wrap; gap: 6px; }
.card-tags .badge { font-size: 11px; }

/* ---------------------------------------------------------------- states */
.empty-state {
  text-align: center;
  padding: 64px 20px 90px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-bottom: 40px;
}
.empty-title { font-size: 17px; font-weight: 620; margin: 0 0 6px; }

.skeleton {
  background: linear-gradient(100deg, var(--bg-card) 30%, var(--bg-elev) 50%, var(--bg-card) 70%);
  background-size: 220% 100%;
  animation: shimmer 1.3s infinite linear;
  border-radius: var(--radius);
  height: 250px;
  border: 1px solid var(--border-soft);
}
@keyframes shimmer { from { background-position: 120% 0; } to { background-position: -120% 0; } }

/* ---------------------------------------------------------------- footer */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 22px 0 30px;
  font-size: 13px;
}
.site-footer .wrap { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.sep { opacity: .5; }

/* ---------------------------------------------------------------- modal */
.modal { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 22px; }
.modal-backdrop { position: absolute; inset: 0; background: var(--scrim); backdrop-filter: blur(4px); }

.modal-panel {
  position: relative;
  width: min(1000px, 100%);
  max-height: calc(100vh - 44px);
  overflow: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  animation: pop .18s ease-out;
}
@keyframes pop { from { transform: translateY(12px) scale(.985); opacity: 0; } }

.modal-close {
  position: absolute;
  top: 12px; right: 12px;
  z-index: 3;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(10,14,20,.62);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(6px);
}
.modal-close:hover { background: rgba(10,14,20,.85); }

.modal-player { background: #05070a; }
.player-frame { position: relative; aspect-ratio: 16 / 9; width: 100%; background: #05070a; }
.player-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.player-notice {
  position: absolute; inset: 0;
  display: grid; place-items: center; text-align: center;
  padding: 24px;
  color: var(--text-soft);
  background: var(--bg-elev);
  font-size: 14px;
}
.player-notice strong { display: block; color: var(--text); margin-bottom: 6px; font-size: 15px; }

.modal-body { padding: 20px 24px 24px; }
.modal-heading { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.modal-heading h2 { font-size: 20px; }
.modal-summary { margin: 0 0 14px; color: var(--text-soft); }

.meta-list { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 14px; font-size: 13px; }
.meta-list div { color: var(--muted); }
.meta-list b { color: var(--text-soft); font-weight: 600; margin-right: 6px; }

.modal-description { color: var(--text-soft); white-space: pre-line; font-size: 14px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }

.modal-foot { margin-top: 18px; display: flex; gap: 12px; }
.link-btn {
  font-size: 13.5px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-soft);
}
.link-btn:hover { border-color: var(--accent); color: var(--text); text-decoration: none; }

/* ---------------------------------------------------------------- toast */
.toast {
  position: fixed;
  left: 50%; bottom: 30px;
  transform: translateX(-50%);
  z-index: 120;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  font-size: 13.5px;
}

/* ---------------------------------------------------------------- responsive */
@media (max-width: 720px) {
  .wrap { padding: 0 15px; }
  .grid { grid-template-columns: 1fr 1fr; gap: 13px; }
  .card-body { padding: 10px 11px 12px; }
  .card-title { font-size: 14px; }
  .card-summary { display: none; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search-box { min-width: 0; }
  .modal { padding: 0; }
  .modal-panel { max-height: 100vh; border-radius: 0; border: 0; }
  .modal-body { padding: 16px 17px 22px; }
}

@media (max-width: 430px) {
  .grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}