/* CSS Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    --bg: #f8fafc;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;

    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: background 0.2s;
}

.nav-link:hover {
    background: var(--bg);
}

.nav-user {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.nav-form {
    margin: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
    flex: 1;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

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

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

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

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

.btn-outline:hover {
    background: var(--bg);
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-help {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.auth-title {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-form {
    margin-bottom: 1rem;
}

.auth-footer {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 1rem;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.flash-success {
    background: #dcfce7;
    color: #166534;
}

.flash-error {
    background: #fee2e2;
    color: #991b1b;
}

.flash-warning {
    background: #fef3c7;
    color: #92400e;
}

.flash-info {
    background: #dbeafe;
    color: #1e40af;
}

.flash-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
}

.flash-close:hover {
    opacity: 1;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    background: var(--bg);
}

.table tr:hover {
    background: var(--bg);
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-pending {
    background: #fef3c7;
    color: #92400e;
}

.badge-confirmed {
    background: #dcfce7;
    color: #166534;
}

.badge-cancelled {
    background: #fee2e2;
    color: #991b1b;
}

.badge-draft {
    background: #e2e8f0;
    color: #475569;
}

.badge-booking {
    background: #dbeafe;
    color: #1e40af;
}

.badge-maintenance {
    background: #fce7f3;
    color: #9d174d;
}

.badge-blocked {
    background: #fecaca;
    color: #991b1b;
}

/* Page Headers */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border);
}

/* Utility Classes */
.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }

.hidden {
    display: none !important;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Detail View */
.detail-row {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-label {
    font-weight: 500;
    width: 150px;
    flex-shrink: 0;
}

.detail-value {
    color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 0.5rem;
    }

    .navbar-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}