/* =====================================================================
   CloudVid — main stylesheet
   Design: "Aurora cloud" — indigo base, violet→cyan signature gradient.
   Supports light/dark via [data-theme]. Responsive desktop + mobile.
   ===================================================================== */

:root {
  /* palette */
  --violet: #6d5efc;
  --violet-deep: #5546e8;
  --cyan: #34d6e8;
  --indigo-900: #0f1226;
  --indigo-800: #171a33;
  --accent-grad: linear-gradient(120deg, var(--violet) 0%, var(--cyan) 100%);

  /* light theme surfaces */
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-2: #f0f1f8;
  --border: #e3e5f0;
  --text: #1a1c2e;
  --text-dim: #6b6f88;
  --shadow: 0 1px 2px rgba(20,22,45,.06), 0 8px 24px rgba(20,22,45,.06);
  --radius: 14px;
  --radius-sm: 9px;
  --sidebar-w: 248px;
  --ok: #1faa6b; --warn: #d98a16; --danger: #e1465c; --info: var(--violet);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

[data-theme="dark"] {
  --bg: #0b0d1c;
  --surface: #15182b;
  --surface-2: #1c2038;
  --border: #262b48;
  --text: #e9ebf7;
  --text-dim: #9398b8;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--violet); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }

/* ---------- App shell ---------- */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 22px 16px;
  position: fixed; inset: 0 auto 0 0; z-index: 40;
  transition: transform .25s ease;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 22px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center; color: #fff; font-size: 14px;
  background: var(--accent-grad);
}
.brand-name { font-weight: 700; font-size: 18px; letter-spacing: -.3px; }

.nav { display: flex; flex-direction: column; gap: 3px; }
.nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  color: var(--text-dim); font-weight: 500; text-decoration: none;
  transition: background .15s, color .15s;
}
.nav a span { width: 20px; text-align: center; opacity: .9; }
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--surface-2); color: var(--text); position: relative; }
.nav a.active::before {
  content: ''; position: absolute; left: -16px; top: 8px; bottom: 8px;
  width: 3px; border-radius: 3px; background: var(--accent-grad);
}

.storage-widget { margin-top: auto; padding: 14px 8px; }
.storage-bar {
  height: 7px; background: var(--surface-2); border-radius: 6px; overflow: hidden; margin-bottom: 8px;
}
.storage-bar span { display: block; height: 100%; background: var(--accent-grad); border-radius: 6px; }
.storage-widget small { color: var(--text-dim); font-size: 12.5px; }
.logout {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  color: var(--text-dim); border-radius: var(--radius-sm); margin-top: 6px;
}
.logout:hover { background: var(--surface-2); color: var(--danger); text-decoration: none; }

.main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }

.topbar {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 28px; border-bottom: 1px solid var(--border);
  background: var(--surface); position: sticky; top: 0; z-index: 30;
}
.page-title { font-size: 19px; font-weight: 650; margin: 0; letter-spacing: -.3px; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.hamburger { display: none; background: none; border: 0; font-size: 22px; color: var(--text); }
.theme-toggle {
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
  width: 38px; height: 38px; border-radius: 10px; font-size: 17px;
}
.avatar {
  width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  color: #fff; font-weight: 600; background: var(--accent-grad);
}
.content { padding: 28px; max-width: 1240px; width: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 10px 18px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-weight: 600; font-size: 14px; text-decoration: none; transition: filter .15s, background .15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent-grad); color: #fff; }
.btn-primary:hover { filter: brightness(1.07); }
.btn-ghost { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Cards / grid ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(170px,1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow);
}
.stat-card .label { color: var(--text-dim); font-size: 13px; }
.stat-card .value { font-size: 26px; font-weight: 700; margin-top: 4px; letter-spacing: -.5px; }

.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }

.video-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 18px; }
.vcard {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .12s, box-shadow .12s;
}
.vcard:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(20,22,45,.12); }
.vcard .thumb {
  aspect-ratio: 16/9; background: var(--surface-2) center/cover no-repeat;
  display: grid; place-items: center; position: relative;
}
.vcard .thumb .play { width: 48px; height: 48px; border-radius: 50%; background: rgba(0,0,0,.55); color:#fff; display:grid; place-items:center; font-size:18px; }
.vcard .thumb .dur { position: absolute; right: 8px; bottom: 8px; background: rgba(0,0,0,.72); color:#fff; font-size:12px; padding:2px 6px; border-radius:5px; }
.vcard .body { padding: 12px 14px; }
.vcard .vtitle { font-weight: 600; font-size: 14.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vcard .meta { color: var(--text-dim); font-size: 12.5px; margin-top: 4px; display: flex; gap: 10px; }
.vcard .actions { display: flex; gap: 6px; padding: 0 14px 14px; }

.folder-row { display: grid; grid-template-columns: repeat(auto-fill,minmax(180px,1fr)); gap: 14px; margin-bottom: 24px; }
.folder {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px; display: flex; align-items: center; gap: 12px; color: var(--text);
}
.folder:hover { background: var(--surface-2); text-decoration: none; }
.folder .ico { font-size: 22px; }
.folder .fname { font-weight: 600; font-size: 14px; }
.folder .fsize { color: var(--text-dim); font-size: 12px; }

.empty { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.empty .big { font-size: 46px; opacity: .5; }

/* ---------- Forms ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.input, select, textarea {
  width: 100%; padding: 11px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-size: 14px; font-family: inherit;
}
.input:focus, select:focus, textarea:focus { outline: 2px solid var(--violet); outline-offset: -1px; border-color: var(--violet); }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }

/* ---------- Badges / alerts ---------- */
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-ok { background: rgba(31,170,107,.14); color: var(--ok); }
.badge-warn { background: rgba(217,138,22,.16); color: var(--warn); }
.badge-danger { background: rgba(225,70,92,.14); color: var(--danger); }

.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; border: 1px solid transparent; }
.alert-success { background: rgba(31,170,107,.12); color: var(--ok); border-color: rgba(31,170,107,.3); }
.alert-error, .alert-danger { background: rgba(225,70,92,.1); color: var(--danger); border-color: rgba(225,70,92,.3); }
.alert-info { background: rgba(109,94,252,.1); color: var(--violet); border-color: rgba(109,94,252,.3); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(8,10,22,.55); display: none;
  align-items: center; justify-content: center; z-index: 60; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface); border-radius: var(--radius); width: 100%; max-width: 460px;
  box-shadow: 0 24px 60px rgba(0,0,0,.35); border: 1px solid var(--border);
  max-height: calc(100vh - 40px); display: flex; flex-direction: column;
}
.modal-head { padding: 18px 22px; border-bottom: 1px solid var(--border); display: flex; align-items: center; flex: none; }
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-head .x { margin-left: auto; background: none; border: 0; font-size: 20px; color: var(--text-dim); cursor: pointer; }
.modal-body { padding: 22px; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.modal-foot { padding: 16px 22px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; flex: none; }

/* ---------- Auth pages ---------- */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(109,94,252,.18), transparent 60%), var(--bg); }
.auth-card { width: 100%; max-width: 410px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px; padding: 34px; box-shadow: var(--shadow); }
.auth-card .brand { justify-content: center; padding-bottom: 18px; }
.auth-card h2 { margin: 0 0 6px; font-size: 22px; letter-spacing: -.4px; text-align: center; }
.auth-card .sub { text-align: center; color: var(--text-dim); margin-bottom: 24px; font-size: 14px; }
.auth-alt { text-align: center; margin-top: 18px; color: var(--text-dim); font-size: 14px; }

/* ---------- Upload ---------- */
.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 48px 24px;
  text-align: center; background: var(--surface); transition: border-color .15s, background .15s; cursor: pointer;
}
.dropzone.drag { border-color: var(--violet); background: rgba(109,94,252,.05); }
.dropzone .big { font-size: 40px; opacity: .6; }
.upload-list { margin-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.upload-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; }
.upload-item .row { display: flex; align-items: center; gap: 12px; }
.upload-item .name { font-weight: 600; font-size: 14px; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upload-item .pct { font-variant-numeric: tabular-nums; color: var(--text-dim); font-size: 13px; }
.progress { height: 8px; background: var(--surface-2); border-radius: 6px; overflow: hidden; margin-top: 10px; }
.progress span { display: block; height: 100%; background: var(--accent-grad); width: 0; transition: width .2s; }

/* ---------- Player / share page ---------- */
.player-wrap { max-width: 960px; margin: 0 auto; }
.player-wrap video { width: 100%; border-radius: var(--radius); background: #000; display: block; }
.share-page { min-height: 100vh; background: var(--bg); padding: 32px 20px; }
.share-page .head { max-width: 960px; margin: 0 auto 18px; display: flex; align-items: center; gap: 12px; }

table.data { width: 100%; border-collapse: collapse; }
table.data th, table.data td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
table.data th { color: var(--text-dim); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .4px; }

/* ---------- Responsive ---------- */
.scrim { display: none; position: fixed; inset: 0; background: rgba(8,10,22,.5); z-index: 35; }
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .hamburger { display: block; }
  .scrim.show { display: block; }
  .content { padding: 18px; }
  .topbar { padding: 14px 18px; }
}

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