/* ==========================================================================
   Order System - Pure Native CSS Design System
   ========================================================================== */

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --secondary: #64748b;
    --secondary-hover: #475569;
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --info: #0ea5e9;
    --info-light: #f0f9ff;
    
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-header: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-focus: #818cf8;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;

    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------------- Navbar ---------------- */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 50;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.25rem;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.navbar-brand-icon {
    width: 2rem;
    height: 2rem;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 1rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.15s ease;
}

.nav-link:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.nav-link.active {
    color: var(--primary);
    background-color: var(--primary-light);
    font-weight: 600;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ---------------- Container & Layout ---------------- */
.main-container {
    max-width: 1200px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
}

.page-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* ---------------- Cards & Grid ---------------- */
.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 0.25rem;
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    background-color: var(--bg-card-header);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background-color: var(--bg-card-header);
    border-top: 1px solid var(--border-color);
}

/* ---------------- Tables ---------------- */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.925rem;
}

.table th {
    background-color: #f8fafc;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background-color: #f8fafc;
}

/* ---------------- Badges ---------------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: 0.775rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-pending {
    background-color: var(--warning-light);
    color: #b45309;
}

.badge-processing {
    background-color: var(--info-light);
    color: #0369a1;
}

.badge-completed {
    background-color: var(--success-light);
    color: #047857;
}

.badge-cancelled {
    background-color: var(--danger-light);
    color: #b91c1c;
}

.badge-neutral {
    background-color: #f1f5f9;
    color: #475569;
}

/* ---------------- Buttons ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.15rem;
    font-size: 0.925rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
    line-height: 1.25;
}

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

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

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

.btn-secondary:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-success:hover {
    background-color: #059669;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.825rem;
}

/* ---------------- Forms ---------------- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.4rem;
}

.form-control, .form-select, .form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.925rem;
    color: var(--text-main);
    background-color: #ffffff;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

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

.filter-bar {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

/* ---------------- Alerts / Toasts ---------------- */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.925rem;
}

.alert-success {
    background-color: var(--success-light);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background-color: var(--danger-light);
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ---------------- Invoice / Detail View ---------------- */
.invoice-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.invoice-meta {
    text-align: right;
}

.order-summary-box {
    background: #f8fafc;
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin-left: auto;
    width: 320px;
    max-width: 100%;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    font-size: 0.925rem;
}

.summary-total {
    font-size: 1.2rem;
    font-weight: 700;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
    color: var(--primary);
}

/* ---------------- Footer ---------------- */
.footer {
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: auto;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        height: auto;
        padding: 1rem;
        gap: 1rem;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
    }

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

    .invoice-card {
        padding: 1.25rem;
    }

    .invoice-header {
        flex-direction: column;
        gap: 1rem;
    }

    .invoice-meta {
        text-align: left;
    }

    .order-summary-box {
        width: 100%;
    }
}

/* ---------------- Multi-Select Interactive Menu Cards ---------------- */
.menu-select-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.menu-select-card:hover {
    border-color: var(--primary);
    background-color: #f8faff;
}

.menu-select-card.is-selected {
    border-color: var(--primary);
    background-color: var(--primary-light);
    box-shadow: 0 0 0 1px var(--primary);
}