/**
 * style.css - الملف الرئيسي للأنماط (نسخة محسنة ومدمجة)
 * متوافق مع PHP 5.6
 * Responsive Design لجميع الشاشات
 */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    --primary: #f4511e;
    --primary-dark: #e03a00;
    --primary-light: #ff7043;
    --primary-gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
    --success: #28a745;
    --success-dark: #218838;
    --danger: #dc3545;
    --danger-dark: #c82333;
    --warning: #ffc107;
    --warning-dark: #e0a800;
    --info: #17a2b8;
    --info-dark: #138496;
    --dark: #1a1a2e;
    --dark-light: #16213e;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f8f9fa;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 36px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-full: 9999px;
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Cairo', sans-serif;
    background: linear-gradient(135deg, #f5f5f5 0%, #eeeeee 100%);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ============================================
   Loading Spinner
   ============================================ */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Header Styles
   ============================================ */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo img {
    height: 50px;
    max-width: 100%;
}

/* Main Navigation */
.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 600;
    transition: var(--transition);
}

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

/* Header Actions */
.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.cart-icon {
    position: relative;
    cursor: pointer;
    font-size: 24px;
    color: var(--primary);
    transition: var(--transition);
}

.cart-icon:hover {
    transform: scale(1.05);
}

.cart-count {
    position: absolute;
    top: -8px;
    left: -8px;
    background: var(--danger);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 50%;
    min-width: 18px;
    text-align: center;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.user-menu:hover {
    background: var(--gray-100);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 18px;
}

/* Buttons */
.btn-login, .btn-register, .btn-logout {
    padding: 8px 20px;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

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

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

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-right: 4px solid var(--success);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border-right: 4px solid var(--danger);
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-right: 4px solid var(--warning);
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-right: 4px solid var(--info);
}

.close-alert {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: inherit;
    opacity: 0.6;
    transition: var(--transition-fast);
}

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

/* ============================================
   Primary Buttons
   ============================================ */
.btn-primary {
    background: var(--primary-gradient);
    color: white;
    padding: 12px 30px;
    border-radius: var(--radius-full);
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
    padding: 12px 30px;
    border-radius: var(--radius-full);
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-secondary:hover {
    background: var(--gray-300);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: var(--gray-400);
    padding: 4px 0 20px;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-col h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 150px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    background: var(--primary-dark);
}

/* ============================================
   Toast Messages
   ============================================ */
.toast-message {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
    box-shadow: var(--shadow-md);
    max-width: 90vw;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--gray-700);
}

.form-group .required {
    color: var(--danger);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: 'Cairo', sans-serif;
    font-size: 14px;
    transition: var(--transition-fast);
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(244,81,30,0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* ============================================
   Cards & Grids
   ============================================ */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-600);
    margin-top: 5px;
}

.restaurants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 25px;
}

.restaurant-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.restaurant-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.restaurant-image {
    height: 180px;
    background-size: cover;
    background-position: center;
    background-color: var(--gray-100);
    position: relative;
}

.restaurant-rating {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: gold;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
}

.restaurant-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
}

.restaurant-info {
    padding: 16px;
}

.restaurant-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.restaurant-meta {
    display: flex;
    gap: 12px;
    font-size: 13px;
    flex-wrap: wrap;
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    padding: 10px 16px;
    background: var(--white);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    transition: var(--transition-fast);
}

.pagination a:hover, .pagination .active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--white);
    border-radius: var(--radius-xl);
}

.empty-state i {
    font-size: 64px;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 20px;
    color: var(--gray-600);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--gray-500);
}

/* ============================================
   Responsive Breakpoints
   ============================================ */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }
    
    .restaurants-grid {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    /* Header Mobile */
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        transition: right 0.3s ease;
        z-index: 1000;
        padding: 20px;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
        gap: 15px;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .header-actions .btn-login,
    .header-actions .btn-register,
    .header-actions .btn-logout {
        display: none;
    }
    
    /* Footer Mobile */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Stats Cards */
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Restaurants Grid */
    .restaurants-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px,1fr));
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-card .stat-number {
        font-size: 28px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 12px 15px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .restaurant-name {
        font-size: 16px;
    }
    
    .restaurant-meta {
        font-size: 12px;
        gap: 8px;
    }
    
    .toast-message {
        left: 15px;
        right: 15px;
        width: auto;
        min-width: auto;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header,
    .footer,
    .bottom-nav,
    .back-to-top,
    .mobile-menu-btn,
    .btn-primary,
    .btn-secondary {
        display: none;
    }
    
    .container {
        padding: 0;
        margin: 0;
    }
    
    body {
        background: white;
    }
}