:root {
  --bg: #0e1726;
  --card: #16223a;
  --card-hi: #1f2e4d;
  --border: #2a3a5e;
  --text: #f1f5fb;
  --text-dim: #9aa9c4;
  --primary: #2b7df0;
  --primary-hi: #4593ff;
  --success: #1cc26b;
  --warn: #f5a623;
  --danger: #e6534b;
  --radius: 14px;
  --pad: 18px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 18px; line-height: 1.45;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
button, input, select { font: inherit; color: inherit; }

#root { min-height: 100vh; padding-bottom: 40px; }

/* ── Header ───────────────────────────────────────────── */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px var(--pad);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar .back {
  background: transparent; border: 0; color: var(--text);
  font-size: 22px; padding: 6px 10px; cursor: pointer;
  border-radius: 8px;
}
.topbar .back:active { background: var(--card-hi); }
.topbar .title { font-size: 20px; font-weight: 600; flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar .lang-badge {
  background: var(--primary); color: #fff;
  padding: 4px 10px; border-radius: 12px; font-size: 14px; font-weight: 600;
  text-transform: uppercase;
}
.topbar .logout-btn {
  background: transparent; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 7px 10px; cursor: pointer; font-size: 13px;
}

/* ── Login ────────────────────────────────────────────── */
.login-shell {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-form {
  width: 100%; max-width: 420px; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px;
}
.login-form h1 { margin: 0 0 6px; font-size: 28px; }
.login-copy { color: var(--text-dim); margin: 0 0 24px; }
.login-label {
  display: block; color: var(--text-dim); font-size: 14px;
  font-weight: 600; margin-top: 14px;
}
.login-input {
  display: block; width: 100%; margin-top: 6px;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 14px; outline: none;
}
.login-input:focus { border-color: var(--primary); }
.login-error {
  background: rgba(230, 83, 75, 0.18); color: #ffaaa5;
  border: 1px solid var(--danger); border-radius: 8px;
  padding: 10px 12px; margin-top: 16px; font-size: 14px;
}

/* ── Container ────────────────────────────────────────── */
.container { padding: var(--pad); max-width: 720px; margin: 0 auto; }

/* ── Section headers (Pending / Completed) ─────────────── */
.group-header {
  font-size: 14px; font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin: 24px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.group-header:first-child { margin-top: 0; }

/* ── Cards (task list) ────────────────────────────────── */
.task-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 14px;
  cursor: pointer;
  transition: background 0.15s;
}
.task-card:active { background: var(--card-hi); }
.task-card .thumb {
  width: 90px; height: 90px; border-radius: 10px; flex-shrink: 0;
  background: var(--bg); object-fit: cover;
}
.task-card .info { flex: 1; min-width: 0; }
.task-card .title { font-size: 18px; font-weight: 600; margin-bottom: 4px;
  word-break: break-word; }
.task-card .meta { font-size: 14px; color: var(--text-dim); margin-bottom: 6px; }
.task-card .progress {
  height: 8px; background: var(--bg); border-radius: 4px; overflow: hidden;
}
.task-card .progress-bar {
  height: 100%; background: var(--success);
}
.task-card .status-pill {
  display: inline-block; padding: 3px 10px; border-radius: 10px;
  font-size: 13px; font-weight: 600; margin-bottom: 4px;
}
.status-pending { background: #555; color: #fff; }
.status-fixing { background: var(--warn); color: #1a1a1a; }
.status-employee_review { background: var(--primary); color: #fff; }
.status-sent_back { background: var(--danger); color: #fff; }
.status-employee_approved, .status-admin_review { background: #4a4a4a; color: #fff; }

/* ── Segment grid ─────────────────────────────────────── */
.seg-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 600px) { .seg-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .seg-grid { grid-template-columns: repeat(4, 1fr); } }
.seg-cell {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: transform 0.1s;
}
.seg-cell:active { transform: scale(0.98); }
.seg-cell.fixed { border-color: var(--success); }
.seg-cell .seg-img {
  width: 100%; height: auto; display: block;
  background: var(--bg);
}
.seg-cell .seg-num {
  position: absolute; top: 6px; left: 6px;
  background: rgba(0,0,0,0.7); color: #fff;
  padding: 3px 9px; border-radius: 8px;
  font-size: 14px; font-weight: 700;
}
.seg-cell .seg-version {
  position: absolute; top: 6px; right: 6px;
  background: var(--success); color: #fff;
  padding: 3px 8px; border-radius: 8px;
  font-size: 12px; font-weight: 700;
}
.seg-cell .seg-kw {
  padding: 8px 10px;
  font-size: 13px;
  word-break: break-word;
  min-height: 38px;
}

/* ── Segment detail ───────────────────────────────────── */
.version-stack { display: flex; flex-direction: column; gap: 16px; }
.version-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.version-card .vc-img { width: 100%; max-height: 70vh; object-fit: contain;
  background: #000; }
.version-card .vc-meta {
  padding: 10px 14px; display: flex; gap: 10px; align-items: center;
  border-top: 1px solid var(--border);
}
.version-card .vc-label {
  font-weight: 700; padding: 3px 10px; border-radius: 8px;
  background: var(--bg); font-size: 14px;
}
.version-card.is-original .vc-label { background: var(--text-dim); color: var(--bg); }
.version-card.is-current .vc-label { background: var(--success); color: #fff; }
.version-card .vc-by { color: var(--text-dim); font-size: 14px; flex: 1; text-align: right; }
.version-card .vc-type { color: var(--text); font-size: 14px; font-style: italic; }

.kw-strip {
  background: var(--card-hi); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 10px; margin-bottom: 16px;
  font-size: 16px;
}
.kw-strip b { color: var(--primary-hi); }

/* ── Segment prev/next nav strip ─────────────────────── */
.seg-nav {
  display: flex; gap: 10px; margin-bottom: 14px;
}
.seg-nav-btn {
  flex: 1;
  background: var(--card); color: var(--text);
  border: 1px solid var(--border);
  padding: 14px 10px; font-size: 16px; font-weight: 600;
  border-radius: 10px; cursor: pointer;
}
.seg-nav-btn:active { background: var(--card-hi); }
.seg-nav-btn.disabled {
  opacity: 0.35; cursor: not-allowed;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: block; width: 100%;
  background: var(--primary); color: #fff;
  border: 0; border-radius: 12px;
  padding: 18px; font-size: 18px; font-weight: 600;
  cursor: pointer; text-align: center;
  margin-top: 14px;
}
.btn:active { background: var(--primary-hi); transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.success { background: var(--success); }
.btn.warn { background: var(--warn); color: #1a1a1a; }
.btn.danger { background: var(--danger); }
.btn.secondary { background: var(--card-hi); border: 1px solid var(--border); }

.sticky-action {
  position: sticky; bottom: 0; padding: 14px;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
}

/* ── States ───────────────────────────────────────────── */
.empty { text-align: center; color: var(--text-dim); padding: 60px 20px; }
.spinner {
  width: 36px; height: 36px;
  border: 4px solid var(--border); border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 40px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }
.error-banner {
  background: var(--danger); color: #fff;
  padding: 12px 16px; border-radius: 10px;
  margin: 14px 0; font-size: 15px;
}

.video-block {
  background: #000; border-radius: var(--radius); overflow: hidden;
  margin-bottom: 14px;
}
.video-block video { width: 100%; display: block; }

.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  background: var(--card-hi); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 18px; box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  z-index: 100; max-width: 90vw;
}
.toast.error { background: var(--danger); border-color: var(--danger); }
.toast.success { background: var(--success); border-color: var(--success); }

.center-msg { padding: 60px 20px; text-align: center; }
.center-msg h2 { font-size: 22px; margin-bottom: 10px; }
.center-msg p { color: var(--text-dim); }