:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --light: #f8fafc;
    --dark: #1e293b;
    --border: #e2e8f0;
    --text: #334155;
    --text-light: #64748b;
    --radius: 0.5rem;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--light);
    color: var(--text);
    line-height: 1.6;
}

/* Navigation */
.admin-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: white;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}

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

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    border-color: var(--primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Authentication Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.auth-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.auth-card-wide {
    max-width: 600px;
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.auth-card h2 {
    font-size: 1rem;
    color: var(--text-light);
    margin: 1.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-light);
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

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

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-link {
    background: none;
    color: var(--text-light);
    padding: 0.5rem;
}

.btn-link:hover {
    color: var(--primary);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.alert-error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: var(--success);
    border: 1px solid #bbf7d0;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

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

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

.table th {
    background: var(--light);
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Lists */
.item-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.item-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.item-name {
    font-weight: 500;
}

.item-price {
    color: var(--text-light);
}

.item-actions {
    display: flex;
    gap: 0.5rem;
}

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.tag-vegan {
    background: #dcfce7;
    color: #166534;
}

.tag-vegetarian {
    background: #d1fae5;
    color: #065f46;
}

.tag-gluten-free {
    background: #fef3c7;
    color: #92400e;
}

.tag-spicy {
    background: #fee2e2;
    color: #991b1b;
}

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

/* Grid */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Dashboard */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    cursor: pointer;
    font-weight: normal;
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .auth-container {
        max-width: 100%;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .admin-nav {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
    }
}

/* HTMX Loading States */
.htmx-request {
    opacity: 0.7;
    pointer-events: none;
}

.htmx-request .btn {
    position: relative;
}

.htmx-request .btn::after {
    content: '';
    position: absolute;
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Toast */
#toast-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1100;
}

.toast {
    padding: 1rem 1.5rem;
    background: var(--dark);
    color: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}