:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-border: #e1e4e8;
  --color-text: #1f2328;
  --color-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --color-warning: #d97706;
  --radius: 8px;
}

* { box-sizing: border-box; }

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

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-primary);
  text-decoration: none;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  margin-left: 16px;
  font-size: 0.95rem;
}

nav a:hover { color: var(--color-primary); }

.user-badge {
  margin-left: 16px;
  color: var(--color-muted);
  font-size: 0.9rem;
}

main.container {
  padding-top: 24px;
  padding-bottom: 48px;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 32px 0 12px; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.hero {
  text-align: center;
  padding: 60px 20px;
}

.hero-actions { margin-top: 20px; }

.muted { color: var(--color-muted); }
.small { font-size: 0.85rem; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.card-form,
.form-page form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-page { max-width: 640px; }

label {
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 12px;
}

input[type=text],
input[type=email],
input[type=password],
input[type=date],
input[type=time],
select,
textarea {
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
}

textarea { min-height: 80px; resize: vertical; }

.btn {
  display: inline-block;
  padding: 9px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  margin-top: 16px;
  margin-right: 8px;
}

.btn-small { padding: 5px 10px; font-size: 0.85rem; margin-top: 0; }

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

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover { background: var(--color-bg); }

.filter-form {
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  vertical-align: top;
}

.data-table th {
  background: var(--color-bg);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-muted);
}

.data-table tr:last-child td { border-bottom: none; }

.actions { white-space: nowrap; }
.actions a { margin-right: 10px; }

.inline-form { display: inline; }

.link-btn {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: underline;
}
.link-btn.danger { color: var(--color-danger); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: capitalize;
}
.badge-available,
.badge-confirmed { background: #dcfce7; color: var(--color-success); }
.badge-booked { background: #dbeafe; color: var(--color-primary-dark); }
.badge-cancelled { background: #fee2e2; color: var(--color-danger); }

.alert {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 4px;
}