:root {
  --bg: #0b0f14;
  --sidebar: #111827;
  --surface: #1a2332;
  --surface2: #243044;
  --border: #2d3f56;
  --text: #e7edf4;
  --muted: #8ba3bf;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --sidebar-w: 240px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 10;
}
.brand {
  padding: 22px 20px;
  border-bottom: 1px solid var(--border);
}
.brand h1 { font-size: 1.05rem; font-weight: 700; }
.brand p { font-size: 0.78rem; color: var(--muted); margin-top: 4px; }
.nav { flex: 1; padding: 12px 10px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 10px 12px; margin-bottom: 4px;
  background: none; border: none; border-radius: 8px;
  color: var(--muted); font-size: 0.92rem; cursor: pointer; text-align: left;
}
.nav-item:hover { background: var(--surface); color: var(--text); }
.nav-item.active { background: rgba(59,130,246,.15); color: #93c5fd; }
.sidebar-foot {
  padding: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.82rem; color: var(--muted);
}
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 28px 32px 48px;
  max-width: 1200px;
}
.page { display: none; }
.page.active { display: block; }
.page-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; }
.page-desc { color: var(--muted); font-size: 0.92rem; margin-bottom: 24px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.stat-label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.stat-value { font-size: 1.75rem; font-weight: 700; margin-top: 6px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h3 {
  font-size: 0.82rem; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); margin-bottom: 14px;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.field { flex: 1; min-width: 160px; }
label { display: block; font-size: 0.82rem; color: var(--muted); margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 10px 12px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 0.92rem; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea { min-height: 180px; font-family: ui-monospace, monospace; font-size: 0.85rem; resize: vertical; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 14px; border: none; border-radius: 8px;
  font-size: 0.88rem; cursor: pointer; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface2); color: var(--text); }
.btn-danger { background: transparent; color: var(--error); border: 1px solid rgba(239,68,68,.35); }
.btn-danger:hover { background: rgba(239,68,68,.12); }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.dropzone {
  border: 2px dashed var(--border); border-radius: 14px;
  padding: 40px 24px; text-align: center; cursor: pointer;
  background: var(--surface2); transition: .2s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: rgba(59,130,246,.08); }
.dropzone p { color: var(--muted); font-size: 0.92rem; margin-top: 8px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding: 0 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 12px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
.link-input {
  width: 100%; max-width: 260px; font-size: 0.78rem;
  padding: 6px 8px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: 6px; color: var(--muted);
}
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  font-size: 0.75rem; background: var(--surface2); color: var(--muted);
}
.badge.ok { background: rgba(34,197,94,.15); color: #86efac; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--muted); padding: 32px; font-size: 0.9rem; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.toast {
  position: fixed; bottom: 24px; right: 24px; padding: 12px 18px;
  border-radius: 10px; background: var(--surface); border: 1px solid var(--border);
  font-size: 0.9rem; opacity: 0; transform: translateY(12px);
  transition: .25s; pointer-events: none; z-index: 200;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { border-color: var(--error); color: #fca5a5; }
.toast.success { border-color: var(--success); color: #86efac; }
.modal-bg {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.6);
  z-index: 100; align-items: center; justify-content: center; padding: 20px;
}
.modal-bg.show { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; width: 100%; max-width: 720px; max-height: 85vh;
  display: flex; flex-direction: column;
}
.modal-head { padding: 18px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-body { padding: 20px; overflow: auto; flex: 1; }
.modal-body pre {
  background: var(--surface2); border-radius: 8px; padding: 14px;
  font-size: 0.82rem; line-height: 1.5; overflow: auto; white-space: pre-wrap; word-break: break-all;
}
.upload-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.upload-item:last-child { border-bottom: none; }
.upload-row { display: flex; align-items: center; gap: 12px; }
.progress-wrap { width: 100px; height: 6px; background: var(--surface2); border-radius: 99px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.upload-link-box {
  margin-top: 10px; padding: 10px 12px;
  background: rgba(34,197,94,.08); border: 1px solid rgba(34,197,94,.25); border-radius: 10px;
}
.upload-link-row { display: flex; gap: 8px; align-items: center; margin-top: 6px; }
.upload-link-row input { flex: 1; font-size: 0.82rem; }
.hint { font-size: 0.82rem; color: var(--muted); margin-top: 8px; }
.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tab {
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: transparent; color: var(--muted); cursor: pointer; font-size: 0.88rem;
}
.tab.active { background: rgba(59,130,246,.15); border-color: var(--accent); color: #93c5fd; }
@media (max-width: 768px) {
  .sidebar { width: 100%; position: relative; height: auto; }
  .main { margin-left: 0; padding: 16px; }
  .layout { flex-direction: column; }
  .nav { display: flex; overflow-x: auto; padding: 8px; }
  .nav-item { white-space: nowrap; width: auto; }
}