:root {
  --bg: #0a0d0f;
  --surface: #12181b;
  --surface-raised: #1a2226;
  --border: #223038;
  --accent: #00f0ff;
  --accent-dim: #0a8b94;
  --red: #ff3b3b;
  --text: #e8f2f4;
  --text-secondary: #9db0b6;
  --text-dim: #5b6b70;
  --radius: 6px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
}

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

button, input, select {
  font-family: inherit;
  font-size: 14px;
}

.btn {
  background: var(--accent);
  color: #001014;
  border: none;
  border-radius: var(--radius);
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: opacity 0.15s;
}
.btn:hover { opacity: 0.85; }
.btn:disabled { opacity: 0.4; cursor: default; }

.btn-secondary {
  background: var(--surface-raised);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-danger { background: var(--red); color: white; }

.btn-small { padding: 6px 12px; font-size: 12px; }

input[type="text"], input[type="email"], input[type="password"], input[type="number"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  width: 100%;
}
input:focus { outline: none; border-color: var(--accent); }

/* ---------------- Login ---------------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px 28px;
}
.login-logo {
  text-align: center;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 4px;
}
.login-sub {
  text-align: center;
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.15em;
  margin-bottom: 32px;
}
.field-label { color: var(--text-secondary); font-size: 12px; margin-bottom: 6px; display: block; }
.field { margin-bottom: 18px; }
.error-box {
  background: rgba(255, 59, 59, 0.1);
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 18px;
}

/* ---------------- App shell ---------------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-wrap: wrap;
  gap: 12px;
}
.topbar-logo { font-weight: 800; letter-spacing: 0.1em; color: var(--accent); }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-user { color: var(--text-secondary); font-size: 13px; }
.nav-link { color: var(--text-secondary); font-size: 13px; margin-right: 16px; }
.nav-link.active, .nav-link:hover { color: var(--accent); }

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

.storage-bar-wrap { margin-bottom: 24px; }
.storage-bar-track {
  height: 10px;
  border-radius: 5px;
  background: var(--surface-raised);
  overflow: hidden;
  border: 1px solid var(--border);
}
.storage-bar-fill { height: 100%; background: var(--accent); transition: width 0.2s; }
.storage-bar-fill.warn { background: #ffb020; }
.storage-bar-fill.full { background: var(--red); }
.storage-text { color: var(--text-secondary); font-size: 12px; margin-top: 6px; }

.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.breadcrumbs { color: var(--text-secondary); font-size: 13px; margin-bottom: 12px; }
.breadcrumbs a { color: var(--text-secondary); }
.breadcrumbs a:hover { color: var(--accent); }

table { width: 100%; border-collapse: collapse; }
.file-table th {
  text-align: left;
  color: var(--text-dim);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.file-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.file-table tr:hover { background: var(--surface-raised); }
.file-name { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.file-actions { display: flex; gap: 6px; justify-content: flex-end; }
.icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  font-size: 12px;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 20px; margin-bottom: 20px; }

.admin-table th, .admin-table td { padding: 10px; border-bottom: 1px solid var(--border); font-size: 13px; text-align: left; }
.admin-table th { color: var(--text-dim); font-size: 11px; text-transform: uppercase; }
.badge { padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.badge.on { background: rgba(0, 240, 255, 0.15); color: var(--accent); }
.badge.off { background: rgba(255, 59, 59, 0.15); color: var(--red); }
.badge.admin { background: rgba(255, 176, 32, 0.15); color: #ffb020; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 24px; width: 100%; max-width: 420px; }
.modal h3 { margin-top: 0; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
[hidden] { display: none !important; }

.toast {
  position: fixed; bottom: 20px; right: 20px; background: var(--surface-raised);
  border: 1px solid var(--border); border-radius: 6px; padding: 12px 16px; font-size: 13px;
  z-index: 200; max-width: 320px;
}
.toast.error { border-color: var(--red); color: var(--red); }

@media (max-width: 640px) {
  .container { padding: 14px; }
  .file-table th:nth-child(3), .file-table td:nth-child(3) { display: none; }
}