:root {
  --bg: #f5f6f4;
  --surface: #ffffff;
  --surface-2: #eef1ee;
  --text: #1c2420;
  --muted: #5d6a63;
  --border: #dde3df;
  --accent: #2f6f5e;
  --accent-text: #ffffff;
  --accent-soft: #dcebe5;
  --danger: #b3261e;
  --ok: #2e7d32;
  --warn: #9a6700;
  --radius: 12px;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.05), 0 2px 8px rgb(0 0 0 / 0.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --surface: #1b211e;
    --surface-2: #232b27;
    --text: #e6ece8;
    --muted: #9aa8a0;
    --border: #2d3631;
    --accent: #6fc2a8;
    --accent-text: #0d1a15;
    --accent-soft: #1f3a31;
    --danger: #f2b8b5;
    --ok: #81c995;
    --warn: #f2cc6b;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1, h2 { margin: 0 0 .4rem; line-height: 1.2; }
h1 { font-size: 1.4rem; }
h2 { font-size: 1.1rem; }
a { color: var(--accent); }
input, select, button { font: inherit; color: inherit; }
input, select {
  min-width: 0;
  padding: .6rem .75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.muted { color: var(--muted); }
.small { font-size: .85rem; }
.error { color: var(--danger); margin: .25rem 0; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
  padding: .55rem .9rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  font-weight: 500;
}
.btn.primary { background: var(--accent); color: var(--accent-text); }
.btn.secondary { background: var(--surface-2); border-color: var(--border); }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--border); }
.btn.link { background: none; padding: 0; color: var(--accent); }
.btn.small { padding: .3rem .6rem; font-size: .85rem; }
.btn:disabled { opacity: .55; cursor: default; }

/* --- login --- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); display: grid; gap: .8rem; padding: 1.5rem; }
.login-card label { display: grid; gap: .3rem; font-weight: 500; }
.login-card p { margin: 0; }

/* --- header --- */
.top {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding: .6rem 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 650; }
.tabs { display: flex; gap: .25rem; flex: 1; }
.tabs a {
  padding: .45rem .75rem; border-radius: 8px;
  color: var(--muted); text-decoration: none; font-weight: 500;
}
.tabs a[aria-current="page"] { background: var(--accent-soft); color: var(--text); }
.who { color: var(--muted); font-size: .9rem; display: flex; gap: .6rem; align-items: center; }
@media (max-width: 640px) {
  .top { gap: .4rem; }
  .brand { flex: 1; }
  .tabs { order: 3; flex-basis: 100%; overflow-x: auto; }
  .tabs a { flex: 1; text-align: center; padding: .45rem .25rem; white-space: nowrap; font-size: .92rem; }
}

.content { max-width: 1000px; margin: 0 auto; padding: 16px; display: grid; gap: 1rem; }
section { display: grid; gap: .8rem; }
.row-form { display: flex; gap: .5rem; flex-wrap: wrap; }
.row-form input { flex: 1 1 220px; }
.search { display: flex; gap: .5rem; flex-wrap: wrap; }
.search input { flex: 1 1 260px; }
.summary { color: var(--muted); font-size: .9rem; }

/* --- lists --- */
.list { display: grid; gap: .5rem; }
.empty { text-align: center; color: var(--muted); padding: 2rem 1rem; }
.item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem .9rem;
  display: grid; gap: .4rem;
}
.item-head { display: flex; gap: .75rem; align-items: flex-start; }
.item-name { flex: 1; min-width: 0; font-weight: 550; overflow-wrap: anywhere; }
.item-meta { display: flex; flex-wrap: wrap; gap: .25rem .9rem; color: var(--muted); font-size: .85rem; }
.item-actions { display: flex; gap: .4rem; flex-wrap: wrap; justify-content: flex-end; }
.progress { height: 6px; background: var(--surface-2); border-radius: 99px; overflow: hidden; }
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: 99px; }
.progress.done > span { background: var(--ok); }
.progress.paused > span { background: var(--muted); }
.badge {
  display: inline-block; padding: .05rem .45rem; border-radius: 99px;
  font-size: .75rem; font-weight: 600; background: var(--surface-2); color: var(--muted);
}
.badge.ok { color: var(--ok); }
.badge.warn { color: var(--warn); }
.badge.err { color: var(--danger); }
.seeds { color: var(--ok); font-weight: 600; }

/* files */
.file-row { display: flex; align-items: center; gap: .75rem; }
.file-row .icon { width: 1.4rem; text-align: center; flex: none; }
.file-row .name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.file-row .name a { color: var(--text); text-decoration: none; font-weight: 500; }
.file-row .name a:hover { text-decoration: underline; }
.crumbs { display: flex; flex-wrap: wrap; gap: .2rem; align-items: center; color: var(--muted); }
.crumbs a { text-decoration: none; }

.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  max-width: calc(100% - 32px);
  background: var(--text); color: var(--bg);
  padding: .6rem 1rem; border-radius: 10px; box-shadow: 0 4px 16px rgb(0 0 0 / .2);
  z-index: 10;
}

/* files: actions under the name on narrow screens */
@media (max-width: 640px) {
  .file-row { flex-wrap: wrap; }
  .file-row .name { flex: 1 1 calc(100% - 2.5rem); }
  .file-row .item-actions { flex-basis: 100%; justify-content: flex-start; padding-left: 2.15rem; }
}
.btn.shared-on { background: var(--accent-soft); color: var(--text); border-color: var(--accent); }

/* dialogs */
.backdrop {
  position: fixed; inset: 0; z-index: 20;
  background: rgb(0 0 0 / .55);
  display: grid; place-items: center; padding: 16px;
}
.modal { width: min(560px, 100%); display: grid; gap: .8rem; }
.modal p { margin: 0; }
.modal input { width: 100%; }

/* player */
.player-backdrop { padding: 0; background: rgb(0 0 0 / .85); }
.player {
  width: min(1200px, 100vw); max-height: 100vh;
  display: flex; flex-direction: column;
  background: #000; color: #eee;
  outline: none;
}
.player:fullscreen { width: 100vw; height: 100vh; max-height: none; }
.player-top { display: flex; align-items: center; gap: .5rem; padding: .4rem .6rem; }
.player-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.player-stage { position: relative; flex: 1; min-height: 0; display: grid; place-items: center; }
.player-stage video { width: 100%; max-height: calc(100vh - 7rem); background: #000; display: block; }
.player:fullscreen .player-stage video { max-height: calc(100vh - 6rem); height: 100%; }
.player-msg {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  background: rgb(0 0 0 / .7); padding: .5rem .9rem; border-radius: 8px; pointer-events: none;
}
.player-msg:empty { display: none; }
.player-bar { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; padding: .5rem .6rem .7rem; }
.player-bar input[type=range] { flex: 1 1 200px; accent-color: #6fc2a8; padding: 0; border: 0; background: none; }
.player-bar select { background: #1b1b1b; color: #eee; border-color: #333; padding: .35rem .5rem; max-width: 14rem; }
.player-time { font-variant-numeric: tabular-nums; font-size: .9rem; color: #ccc; min-width: 7.5rem; }
.pbtn {
  background: none; border: 0; color: #eee; cursor: pointer;
  font-size: 1.15rem; line-height: 1; padding: .35rem .5rem; border-radius: 6px;
}
.pbtn:hover { background: rgb(255 255 255 / .12); }
video::cue { background: rgb(0 0 0 / .65); font-size: clamp(16px, 2.6vw, 30px); }