:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --panel-2: #232730;
  --border: #2a2e38;
  --text: #e6e8ee;
  --muted: #8a91a0;
  --accent: #4f8cff;
  --accent-hover: #2f6ff0;
  --danger: #e35a5a;
  --ok: #4caf76;
  --warn: #d6a23a;
  --radius: 8px;
}

* { 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: 14px;
  line-height: 1.5;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px;
}

header.app {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
header.app h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
}
header.app nav a {
  margin-left: 16px;
  color: var(--muted);
}
header.app nav a.active { color: var(--text); }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }

.drop {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.drop.dragover {
  border-color: var(--accent);
  background: rgba(79, 140, 255, 0.06);
}
.drop input[type=file] { display: none; }

button, .btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
button:hover, .btn:hover { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); }
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
button.small { padding: 4px 10px; font-size: 12px; }

input[type=text], input[type=password], input[type=number] {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  width: 100%;
}

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tr:last-child td { border-bottom: none; }

.bar {
  height: 6px;
  background: var(--panel-2);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}
.bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
  transition: width .2s;
}
.bar.warn > span { background: var(--warn); }
.bar.danger > span { background: var(--danger); }

.row { display: flex; gap: 8px; align-items: center; }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.tabs button {
  background: transparent;
  color: var(--muted);
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: 8px 14px;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }

.toast-wrap {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}
.toast {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  border-radius: 6px;
  max-width: 360px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.toast.error { border-left-color: var(--danger); }
.toast.ok { border-left-color: var(--ok); }

.modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}
.modal-bg.show { display: flex; }
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 420px;
  width: 90%;
  text-align: center;
}

.upload-item {
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.upload-item:last-child { border-bottom: none; }
.upload-name { font-weight: 500; word-break: break-all; }

.qr img { width: 200px; height: 200px; image-rendering: pixelated; }

.empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--muted);
}