*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #0a1628;
  --accent: #1a73e8;
  --accent-hover: #1557b0;
  --danger: #dc3545;
  --danger-hover: #b02a37;
  --success: #198754;
  --text: #333;
  --text-light: #666;
  --bg: #f4f6f9;
  --card: #fff;
  --border: #e0e4ea;
  --radius: 8px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Auth pages ── */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #0a1628 0%, #1a2d4a 100%);
}

.auth-card {
  background: var(--card);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.auth-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 24px;
}

.auth-logo span { color: var(--accent); }

.auth-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-desc {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.auth-link {
  display: block;
  text-align: center;
  margin-top: 16px;
  color: var(--accent);
  font-size: 0.85rem;
  text-decoration: none;
}

/* ── Forms ── */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26,115,232,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: var(--bg); }

.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* ── Messages ── */
.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 12px;
  text-align: center;
}

.msg {
  font-size: 0.85rem;
  margin-top: 12px;
  padding: 8px 12px;
  border-radius: 6px;
}
.msg.success { background: #d1e7dd; color: #0f5132; }
.msg.error { background: #f8d7da; color: #842029; }

/* ── Admin layout ── */
.admin-header {
  background: var(--primary);
  padding: 0 24px;
  height: 56px;
}

.admin-header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.admin-logo {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
}
.admin-logo span { color: var(--accent); }
.admin-logo small {
  font-weight: 400;
  opacity: 0.5;
  margin-left: 8px;
  font-size: 0.8rem;
}

.admin-header .btn-outline {
  color: rgba(255,255,255,0.7);
  border-color: rgba(255,255,255,0.2);
}
.admin-header .btn-outline:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.admin-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

/* ── Cards ── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary);
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab {
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -1px;
}

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

/* ── Admin table ── */
.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th {
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-light);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.admin-table td {
  padding: 12px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

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

.empty {
  text-align: center;
  color: var(--text-light);
  padding: 40px 0;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .auth-card { padding: 24px; }
  .admin-main { padding: 16px; }
}