:root {
  --bg: #f4f5f9;
  --surface: #ffffff;
  --text: #1c1e26;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.06);
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151c;
    --surface: #1d1f29;
    --text: #edeef2;
    --muted: #9aa0ac;
    --border: #2c2f3a;
    --danger-bg: #3a1414;
    --success-bg: #123321;
    --success-text: #86efac;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar .brand {
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--muted);
}

.topbar nav a { color: var(--muted); }
.topbar nav a:hover { color: var(--text); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 0 0 14px; }
.subtitle { color: var(--muted); margin: 0 0 24px; font-size: 0.95rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 28px;
}

.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.form-row .field { flex: 1; min-width: 180px; }

label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
}

input[type="text"],
input[type="url"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

.scope-toggle {
  display: flex;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
}

.scope-toggle label {
  flex: 1;
  margin: 0;
  text-align: center;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
}

.scope-toggle input { display: none; }
.scope-toggle input:checked + span { color: white; }
.scope-toggle label:has(input:checked) {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}
.scope-toggle label:has(input:checked) span { color: white; }

button, .btn {
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}

button:hover, .btn:hover { filter: brightness(1.07); }

button.secondary, .btn.secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

button.danger, .btn.danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.actions-inline { display: flex; gap: 8px; margin-top: 14px; }

.alert {
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.alert.error { background: var(--danger-bg); color: var(--danger); }
.alert.notice { background: var(--success-bg); color: var(--success-text); }

/* --- Big link buttons --- */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.link-btn-wrap { position: relative; }

.link-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px;
  border-radius: 18px;
  min-height: 108px;
  color: white;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, filter 0.12s ease;
  overflow-wrap: anywhere;
}

.link-btn:hover { transform: translateY(-2px); filter: brightness(1.05); }

.link-btn .domain {
  font-weight: 500;
  font-size: 0.78rem;
  opacity: 0.85;
  text-transform: lowercase;
}

.link-card-tools {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.link-btn-wrap:hover .link-card-tools { opacity: 1; }

.icon-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.35);
  color: white;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.icon-btn:hover { background: rgba(0, 0, 0, 0.55); }

.empty-state {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 20px 0;
}

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
}

.login-card h1 { text-align: center; margin-bottom: 4px; }
.login-card .subtitle { text-align: center; }
.login-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 10px; }

table.users-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.users-table th, table.users-table td {
  text-align: right;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
table.users-table th:first-child, table.users-table td:first-child { text-align: right; }
table.users-table th { color: var(--muted); font-weight: 600; }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.badge.admin { background: var(--success-bg); color: var(--success-text); }

.inline-form { display: inline-flex; gap: 6px; align-items: center; }
.inline-form input { width: 130px; padding: 6px 8px; font-size: 0.85rem; }
.small-btn { padding: 6px 10px; font-size: 0.8rem; }

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
}

.category-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0 0 10px;
  padding-left: 2px;
}

.edit-form {
  display: none;
  margin-top: 10px;
  gap: 8px;
}
.edit-form.open { display: flex; }
.category-manager-body.open { flex-direction: column; gap: 20px; }

/* --- Tabs --- */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--muted);
  cursor: pointer;
}

.tab-btn:hover { color: var(--text); filter: none; }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }
.edit-form input { flex: 1; }