:root {
  --bg: #f4f6fb;
  --bg-subtle: #eef2f7;
  --panel: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff6ff;
  --good: #16a34a;
  --good-soft: #f0fdf4;
  --warn: #d97706;
  --warn-soft: #fffbeb;
  --bad: #dc2626;
  --bad-soft: #fef2f2;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1);
  --radius: 12px;
  --radius-lg: 16px;
}

* { box-sizing: border-box; }

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 48px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin: 0 -20px 28px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.topbar h1::before {
  content: "DISI";
  display: inline-block;
  margin-right: 10px;
  padding: 3px 8px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  vertical-align: middle;
}

.topbar .meta {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.topbar .actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.labs-intro {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.labs-intro code {
  font-size: 13px;
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: 6px;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn.danger {
  background: var(--bad-soft);
  border-color: #fecaca;
  color: var(--bad);
}

.btn.link {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--accent);
  padding: 4px 8px;
}

.btn.link:hover { box-shadow: none; text-decoration: underline; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.app-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.app-card-icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
}

.app-card-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-card-icon.fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 20px;
  border-color: #bfdbfe;
}

.app-card-body {
  flex: 1;
  min-width: 0;
}

.app-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #bfdbfe;
  text-decoration: none;
}

.app-card h2 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.app-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.admin-app-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
}

.admin-app-icon.fallback {
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  background: var(--accent-soft);
}

.empty {
  color: var(--muted);
  padding: 32px 24px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  text-align: center;
  background: var(--panel);
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 0%, #dbeafe 0%, transparent 45%),
    radial-gradient(circle at 80% 100%, #e0e7ff 0%, transparent 40%),
    var(--bg);
}

.login-box {
  width: min(400px, 100%);
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-lg);
}

.login-box .brand {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.login-box h1 {
  margin: 0 0 24px;
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -0.03em;
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: #93c5fd;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.error {
  color: var(--bad);
  font-size: 14px;
  margin: 12px 0 0;
  padding: 10px 12px;
  background: var(--bad-soft);
  border-radius: 8px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tab {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.tab.active {
  color: var(--accent);
  border-color: #bfdbfe;
  background: var(--accent-soft);
}

.panel { display: none; }
.panel.active { display: block; }

.data-table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: auto;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--bg-subtle);
}

.data-table tbody tr:hover {
  background: #fafbfd;
}

.data-table tr:last-child td { border-bottom: 0; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}

.modal-backdrop.open { display: flex; }

.modal {
  width: min(640px, 100%);
  max-height: 90vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  padding: 24px;
  box-shadow: var(--shadow-lg);
}

.modal h3 {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 600;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-grid .full { grid-column: 1 / -1; }

.perm-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.perm-list label {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
}