/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1A73E8;
    --primary-dark: #1557B0;
    --secondary: #34A853;
    --danger: #EA4335;
    --warning: #FBBC04;
    --text-primary: #202124;
    --text-secondary: #5F6368;
    --border: #DADCE0;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    padding-bottom: 80px;
    padding-bottom: calc(80px + env(safe-area-inset-bottom));
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.header-actions {
    display: flex;
    gap: 12px;
}

.btn-icon {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 50%;
    transition: background 0.2s;
}

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

.btn-cart {
    position: relative;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 50%;
    transition: background 0.2s;
}

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

.cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

/* Search Bar */
.search-bar {
    background: var(--bg-primary);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.search-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 14px;
    outline: none;
    transition: border 0.2s;
}

.search-input:focus {
    border-color: var(--primary);
}

/* Categories */
.categories {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 16px 0;
    scrollbar-width: none;
}

.categories::-webkit-scrollbar {
    display: none;
}

.category-btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

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

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

/* Loading & Error */
.loading, .error {
    text-align: center;
    padding: 48px 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* Menu Grid */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    padding: 16px 0;
}

.menu-item {
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.menu-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.menu-item-image {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: 700;
    color: white;
}

.menu-item-content {
    padding: 16px;
}

.menu-item-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.menu-item-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.menu-item-actions {
    display: flex;
    gap: 8px;
}

.btn-add {
    flex: 1;
    padding: 10px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

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

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

.btn-qty {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.qty-display {
    font-weight: 600;
    min-width: 24px;
    text-align: center;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom));
    z-index: 100;
    min-height: 64px;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
    flex: 1;
    max-width: 120px;
}

.nav-item.active {
    color: var(--primary);
}

.nav-item span {
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 12px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.btn-close {
    background: none;
    border: none;
    font-size: 32px;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
}

/* Cart Items */
.cart-item {
    display: flex;
    gap: 12px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.cart-item-details {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.cart-item-price {
    color: var(--text-secondary);
    font-size: 14px;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border 0.2s;
}

.form-input:focus {
    border-color: var(--primary);
}

.radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Order Summary */
.order-summary {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.order-summary h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    padding-top: 12px;
    margin-top: 12px;
    border-top: 2px solid var(--border);
    font-weight: 700;
    font-size: 18px;
}

/* Buttons */
.btn-primary {
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}

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

.btn-block {
    width: 100%;
}

.total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-size: 18px;
    font-weight: 600;
}

.total-price {
    color: var(--primary);
    font-size: 24px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all 0.3s;
    z-index: 2000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* History */
.history-item {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
}

.history-id {
    font-weight: 600;
    font-size: 14px;
}

.history-status {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.status-pending {
    background: #FFF3CD;
    color: #856404;
}

.status-confirmed {
    background: #D1ECF1;
    color: #0C5460;
}

.status-completed {
    background: #D4EDDA;
    color: #155724;
}

.history-items {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.history-total {
    font-weight: 600;
    color: var(--primary);
}

.text-center {
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .menu-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 12px;
    }

    .menu-item-image {
        height: 140px;
        font-size: 36px;
    }

    .modal-content {
        max-height: 95vh;
    }
}