:root {
    --bg: #f5f5f7;
    --text: #1d1d1f;
    --muted: #757575;
    --primary: #d32f2f;
    --primary-dark: #b71c1c;
    --primary-light: #ef5350;
    --card: #ffffff;
    --border: #e0e0e0;
    --success: #388e3c;
    --warning: #f57c00;
    --danger: #d32f2f;
    --info: #1976d2;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --transition: all 0.3s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    font-size: 16px;
}

.container {
    width: min(1200px, 94vw);
    margin: 0 auto;
    padding: 0 16px;
}

.row {
    display: flex;
    align-items: center;
}

.row.col {
    flex-direction: column;
    align-items: flex-start;
}

.space-between {
    justify-content: space-between;
}

.gap {
    gap: 16px;
}

/* Header & Navigation */
.site-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.site-header .container {
    padding: 12px 16px;
}

.site-header .brand {
    font-weight: 700;
    font-size: 24px;
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}

.site-header .brand:hover {
    opacity: 0.8;
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.site-header nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

.site-header nav a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.cart-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.cart-count {
    font-size: 11px;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    padding: 2px 8px;
    line-height: 1.4;
    min-width: 20px;
    text-align: center;
}

.site-header .muted {
    margin-left: 16px;
    padding-left: 16px;
    border-left: 1px solid var(--border);
}

.admin-subnav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 66px;
    z-index: 90;
}

.admin-subnav .container {
    padding-top: 10px;
    padding-bottom: 10px;
}

.admin-subnav-links {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.admin-subnav-link {
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--border);
    background: var(--bg);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    white-space: nowrap;
    transition: var(--transition);
}

.admin-subnav-link:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.admin-subnav-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.admin-layout main.container {
    width: min(1320px, 96vw);
    padding-top: 8px;
}

.admin-layout h1 {
    margin-top: 16px;
    margin-bottom: 18px;
}

.admin-layout .card {
    border-radius: 12px;
}

.admin-dashboard-strip {
    padding: 14px 0 4px;
}

.admin-kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(140px, 1fr));
    gap: 12px;
}

.admin-kpi-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    box-shadow: var(--shadow);
}

.admin-kpi-label {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-bottom: 4px;
}

.admin-kpi-value {
    font-size: 22px;
    line-height: 1.1;
}

.admin-quick-actions {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-layout .card.row.space-between {
    padding-top: 14px;
    padding-bottom: 14px;
}

.admin-layout .card.row.space-between a {
    font-weight: 600;
}

.admin-layout p .btn {
    margin-right: 8px;
    margin-bottom: 8px;
}

.admin-layout table th {
    background: var(--bg);
}

.table-wrap {
    overflow-x: auto;
}

.admin-order-table {
    min-width: 920px;
}

.admin-reservation-table {
    min-width: 820px;
}

.admin-product-table {
    min-width: 920px;
}

.admin-offer-table {
    min-width: 760px;
}

.admin-category-table {
    min-width: 860px;
}

.admin-order-table td,
.admin-order-table th {
    vertical-align: middle;
    white-space: nowrap;
}

.admin-reservation-table td,
.admin-reservation-table th {
    vertical-align: middle;
    white-space: nowrap;
}

.admin-product-table td,
.admin-product-table th,
.admin-offer-table td,
.admin-offer-table th {
    vertical-align: middle;
    white-space: nowrap;
}

.admin-category-table td,
.admin-category-table th {
    vertical-align: middle;
    white-space: nowrap;
}

.admin-inline-form {
    margin: 0;
    display: inline;
}

.admin-inline-input {
    min-width: 220px;
    max-width: 320px;
}

.admin-inline-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Footer */
.site-footer {
    background: var(--card);
    border-top: 1px solid var(--border);
    margin-top: 48px;
    padding: 32px 0;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 24px 0 16px 0;
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 32px;
    color: var(--text);
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}

h4 {
    font-size: 16px;
}

p {
    margin: 12px 0;
}

.muted {
    color: var(--muted);
    font-size: 13px;
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin: 16px 0;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.card-header {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

/* Grid Layout */
.grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

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

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

.menu-page-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
}

.menu-filters-panel {
    position: sticky;
    top: 120px;
    margin: 0;
}

.menu-filters-panel h1 {
    margin-top: 0;
}

.menu-main {
    min-width: 0;
}

.menu-toolbar {
    max-width: 520px;
}

.menu-search-input {
    width: 100%;
}

.menu-categories {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.menu-category-chip {
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

.menu-category-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.menu-category-chip.is-active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.menu-filter-summary {
    font-size: 13px;
}

.menu-product-grid {
    grid-template-columns: 1fr;
}

.menu-card {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
}

.menu-card-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.menu-card-title {
    margin: 0;
    line-height: 1.35;
}

.menu-card-description {
    margin: 2px 0 4px;
    line-height: 1.45;
    color: var(--muted);
}

.menu-card-price {
    display: block;
    margin: 0 0 2px;
}

.menu-modifier-list {
    margin-top: 8px;
    display: grid;
    gap: 8px;
}

.menu-modifier-group {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    margin: 0;
}

.menu-modifier-group legend {
    font-weight: 600;
    font-size: 13px;
    padding: 0 4px;
}

.menu-modifier-option {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
    font-size: 13px;
}

.menu-item-image {
    width: 160px;
    height: 120px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 0;
    border: 1px solid var(--border);
}

.menu-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
}

.qty-control {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.qty-control .btn-small {
    min-width: 34px;
    padding: 8px 0;
}

.qty-value {
    min-width: 20px;
    text-align: center;
    font-weight: 600;
}

.menu-cart-panel {
    position: sticky;
    top: 120px;
    margin: 0;
}

.menu-cart-panel h2 {
    margin-top: 0;
}

.menu-cart-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.menu-cart-row {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.menu-cart-row-main {
    min-width: 0;
}

.menu-cart-row-name {
    font-weight: 600;
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 180px;
}

.menu-cart-row-qty {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.menu-cart-row-qty-value {
    min-width: 18px;
    text-align: center;
    font-weight: 600;
}

.menu-cart-row-side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
}

.menu-cart-row-subtotal {
    font-weight: 700;
}

.menu-cart-summary {
    margin-top: 12px;
    border-top: 1px dashed var(--border);
    padding-top: 10px;
}

.menu-cart-actions {
    margin-top: 12px;
    display: grid;
    gap: 8px;
}

.admin-product-image-preview {
    display: block;
    width: 100%;
    max-width: 260px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-top: 8px;
}

#menu-empty-state {
    margin-top: 8px;
}

.modifier-builder {
    display: grid;
    gap: 10px;
}

.modifier-group-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
    background: var(--bg);
}

.modifier-option-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 120px auto;
    gap: 8px;
    margin-bottom: 8px;
}

/* Buttons & Links */
button,
.btn {
    border: none;
    background: var(--primary);
    color: #fff;
    padding: 12px 24px;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
    user-select: none;
}

button:hover,
.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

button:active,
.btn:active {
    transform: translateY(0);
}

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

.btn-secondary {
    background: var(--muted);
    color: #fff;
}

.btn-secondary:hover {
    background: #616161;
}

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

.btn-success:hover {
    background: #2e7d32;
}

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

.btn-warning:hover {
    background: #e65100;
}

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

.btn-danger:hover {
    background: #b71c1c;
}

.btn-info {
    background: var(--info);
}

.btn-info:hover {
    background: #1565c0;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
input:not([type="checkbox"]):not([type="radio"]),
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
    background: var(--card);
}

input:not([type="checkbox"]):not([type="radio"]):focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    display: inline-block;
    margin: 0 8px 0 0;
    vertical-align: middle;
    padding: 0;
}

input::placeholder,
textarea::placeholder {
    color: var(--muted);
}

label {
    display: block;
    margin: 12px 0 6px 0;
    font-weight: 500;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr 1fr;
}

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

.auth-card {
    max-width: 560px;
    margin: 0 auto;
}

.auth-actions {
    margin-top: 14px;
    display: flex;
    justify-content: flex-start;
}

.auth-switch {
    margin: 12px 0 0;
}

/* Badges */
.badge {
    font-size: 12px;
    border-radius: 999px;
    padding: 6px 12px;
    background: #fce4ec;
    color: var(--primary);
    font-weight: 500;
    display: inline-block;
}

.badge.success {
    background: #e8f5e9;
    color: var(--success);
}

.badge.warning {
    background: #fff3e0;
    color: var(--warning);
}

.badge.danger {
    background: #ffebee;
    color: var(--danger);
}

.badge.info {
    background: #e3f2fd;
    color: var(--info);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: var(--card);
}

thead {
    background: var(--bg);
}

th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
    color: var(--text);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

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

/* Utilities */
.text-center {
    text-align: center;
}

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

.text-muted {
    color: var(--muted);
}

.text-success {
    color: var(--success);
}

.text-warning {
    color: var(--warning);
}

.text-danger {
    color: var(--danger);
}

.text-info {
    color: var(--info);
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.pt-1 { padding-top: 8px; }
.pt-2 { padding-top: 16px; }
.pt-3 { padding-top: 24px; }
.pb-1 { padding-bottom: 8px; }
.pb-2 { padding-bottom: 16px; }
.pb-3 { padding-bottom: 24px; }

.hidden {
    display: none !important;
}

.toast {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 1200;
    background: var(--card);
    color: var(--text);
    border: 1px solid var(--border);
    border-left: 4px solid var(--success);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 10px 14px;
    opacity: 0;
    transform: translateY(12px);
    transition: var(--transition);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.toast-error {
    border-left-color: var(--danger);
}

.flex-wrap {
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-grid.cols-3 {
        grid-template-columns: 1fr 1fr;
    }

    .menu-page-layout {
        grid-template-columns: minmax(0, 1fr) 340px;
    }

    .menu-filters-panel {
        position: static;
        grid-column: 1 / -1;
    }

    .menu-cart-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 15px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .site-header nav {
        width: 100%;
        flex-wrap: wrap;
        gap: 12px;
    }

    .site-header .brand {
        font-size: 20px;
    }

    .site-header .muted {
        width: 100%;
        margin-left: 0;
        padding-left: 0;
        border-left: none;
    }

    .admin-subnav {
        top: 98px;
    }

    .admin-kpi-grid {
        grid-template-columns: repeat(2, minmax(120px, 1fr));
    }

    .card {
        padding: 16px;
    }

    .grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

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

    .form-grid,
    .form-grid.cols-3 {
        grid-template-columns: 1fr;
    }

    button,
    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }

    input,
    select,
    textarea {
        padding: 10px;
    }

    .container {
        width: 100%;
    }

    .menu-page-layout {
        grid-template-columns: 1fr;
    }

    .menu-card {
        grid-template-columns: 1fr;
    }

    .menu-item-image {
        width: 100%;
        height: 150px;
    }
}