:root {
    --primary: #D32F2F;
    --primary-dark: #B71C1C;
    --secondary: #2E7D32;
    --accent: #FFC107;
    --dark: #1A1A2E;
    --light: #F5F5F5;
    --white: #FFFFFF;
    --gray: #757575;
    --light-gray: #E0E0E0;
    --shadow: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-hover: 0 15px 45px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-sm: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Vazirmatn', sans-serif; background: var(--light); color: var(--dark); overflow-x: hidden; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--light); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes rotateIn { from { transform: rotate(-180deg) scale(0); opacity: 0; } to { transform: rotate(0) scale(1); opacity: 1; } }
@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(-20px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.page { display: none; animation: fadeIn 0.4s ease; min-height: calc(100vh - 200px); }
.page.active { display: block; }

.header { background: var(--white); box-shadow: 0 2px 15px rgba(0,0,0,0.06); position: sticky; top: 0; z-index: 1000; padding: 12px 0; }
.header-inner { max-width: 1400px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; cursor: pointer; text-decoration: none; }
.logo-icon { width: 44px; height: 44px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: white; font-size: 22px; }
.logo-text { font-size: 22px; font-weight: 900; background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.search-box { flex: 1; max-width: 450px; position: relative; }
.search-box input { width: 100%; padding: 12px 45px 12px 18px; border: 2px solid var(--light-gray); border-radius: var(--radius-sm); font-family: inherit; font-size: 14px; transition: all 0.3s; background: var(--light); }
.search-box input:focus { outline: none; border-color: var(--primary); background: var(--white); box-shadow: 0 0 0 3px rgba(211,47,47,0.1); }
.search-box button { position: absolute; left: 5px; top: 50%; transform: translateY(-50%); background: var(--primary); color: white; border: none; width: 36px; height: 36px; border-radius: var(--radius-sm); cursor: pointer; transition: all 0.3s; }
.search-box button:hover { background: var(--primary-dark); transform: translateY(-50%) scale(1.05); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-btn { position: relative; background: none; border: none; font-size: 20px; color: var(--dark); cursor: pointer; padding: 8px; border-radius: var(--radius-sm); transition: all 0.3s; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; }
.header-btn:hover { background: var(--light); color: var(--primary); }
.badge { position: absolute; top: 2px; right: 2px; background: var(--primary); color: white; font-size: 10px; width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; }
.user-menu { display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 6px 14px; border-radius: var(--radius-sm); transition: all 0.3s; border: 2px solid var(--light-gray); background: var(--white); }
.user-menu:hover { border-color: var(--primary); background: var(--light); }
.user-avatar { width: 32px; height: 32px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-size: 14px; }
#userName { font-size: 14px; font-weight: 600; }

.nav-categories { background: var(--white); border-top: 1px solid var(--light-gray); padding: 10px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.nav-categories::-webkit-scrollbar { display: none; }
.nav-inner { max-width: 1400px; margin: 0 auto; padding: 0 20px; display: flex; gap: 8px; }
.nav-item { 
    white-space: nowrap; 
    padding: 8px 20px; 
    border-radius: var(--radius-sm); 
    cursor: pointer; 
    transition: all 0.3s; 
    font-size: 13px; 
    font-weight: 600; 
    border: 2px solid transparent; 
    background: var(--light); 
    color: var(--gray); 
    display: flex; 
    align-items: center; 
    gap: 6px; 
}
.nav-item i { font-size: 14px; }
.nav-item:hover, .nav-item.active { background: var(--primary); color: white; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(211,47,47,0.25); }

.hero { background: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%); padding: 60px 20px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -50%; right: -10%; width: 500px; height: 500px; background: rgba(211,47,47,0.15); border-radius: 50%; animation: float 6s ease infinite; }
.hero::after { content: ''; position: absolute; bottom: -30%; left: -5%; width: 300px; height: 300px; background: rgba(46,125,50,0.1); border-radius: 50%; animation: float 8s ease infinite reverse; }
.hero-inner { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; position: relative; z-index: 1; }
.hero-content h1 { font-size: 42px; color: white; margin-bottom: 15px; line-height: 1.3; font-weight: 900; }
.hero-content p { font-size: 16px; color: rgba(255,255,255,0.85); margin-bottom: 25px; line-height: 1.8; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }

.btn { padding: 12px 28px; border-radius: var(--radius-sm); font-family: inherit; font-size: 15px; font-weight: 700; cursor: pointer; border: none; transition: all 0.3s; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.btn-primary { background: var(--primary); color: white; box-shadow: 0 4px 15px rgba(211,47,47,0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 25px rgba(211,47,47,0.4); }
.btn-outline { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.4); }
.btn-outline:hover { background: white; color: var(--primary); border-color: white; }
.btn-secondary { background: var(--secondary); color: white; }
.btn-secondary:hover { background: #1B5E20; transform: translateY(-2px); }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-full { width: 100%; justify-content: center; }

.features { padding: 50px 20px; background: var(--white); }
.features-inner { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.feature-card { text-align: center; padding: 25px; border-radius: var(--radius); background: var(--light); transition: all 0.3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-icon { width: 60px; height: 60px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; margin: 0 auto 15px; color: white; font-size: 24px; }
.feature-card h3 { font-size: 16px; margin-bottom: 8px; }
.feature-card p { color: var(--gray); font-size: 13px; }

.products-section { padding: 60px 20px; max-width: 1400px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 { font-size: 30px; margin-bottom: 10px; font-weight: 900; }
.section-header p { color: var(--gray); font-size: 15px; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 25px; }

/* ===== کارت محصول ===== */
.product-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: all 0.4s; cursor: pointer; position: relative; }
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.product-image { position: relative; height: 220px; overflow: hidden; background: #f0f0f0; }
.product-image img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    transition: none; /* حذف افکت زوم */
}
.product-badge { position: absolute; top: 12px; right: 12px; background: var(--primary); color: white; padding: 4px 12px; border-radius: var(--radius-sm); font-size: 11px; font-weight: bold; z-index: 2; }
.product-wishlist { position: absolute; top: 12px; left: 12px; width: 36px; height: 36px; background: white; border: none; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--gray); transition: all 0.3s; z-index: 2; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.product-wishlist:hover, .product-wishlist.active { background: var(--primary); color: white; transform: scale(1.1); }
.product-info { padding: 16px; }
.product-category { color: var(--primary); font-size: 11px; font-weight: 700; margin-bottom: 6px; }
.product-title { font-size: 15px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; height: 44px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.product-rating { display: flex; align-items: center; gap: 4px; margin-bottom: 12px; }
.stars { color: var(--accent); font-size: 14px; }
.rating-count { color: var(--gray); font-size: 12px; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { display: flex; flex-direction: column; }
.price-current { font-size: 18px; font-weight: 900; color: var(--primary); }
.price-old { font-size: 13px; color: var(--gray); text-decoration: line-through; }
.add-to-cart { width: 40px; height: 40px; background: var(--primary); color: white; border: none; border-radius: var(--radius-sm); cursor: pointer; font-size: 16px; transition: all 0.3s; display: flex; align-items: center; justify-content: center; }
.add-to-cart:hover { background: var(--primary-dark); transform: scale(1.05); }

/* ===== مودال ===== */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.6); z-index: 2000; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.modal-overlay.active { display: flex; }
.modal-content { background: var(--white); border-radius: var(--radius); padding: 40px; width: 100%; max-width: 440px; position: relative; animation: modalIn 0.3s ease; max-height: 90vh; overflow-y: auto; }
.modal-close { position: absolute; top: 15px; left: 15px; background: none; border: none; font-size: 22px; color: var(--gray); cursor: pointer; transition: color 0.3s; }
.modal-close:hover { color: var(--primary); }

.auth-tabs { display: flex; gap: 0; margin-bottom: 30px; border-radius: var(--radius-sm); overflow: hidden; border: 2px solid var(--light-gray); }
.auth-tab { flex: 1; padding: 12px; border: none; background: var(--light); font-family: inherit; font-size: 15px; font-weight: 700; cursor: pointer; transition: all 0.3s; color: var(--gray); }
.auth-tab.active { background: var(--primary); color: white; }
.auth-tab:hover:not(.active) { background: var(--light-gray); }

.auth-panel { display: none; }
.auth-panel.active { display: block; }
.auth-header { text-align: center; margin-bottom: 30px; }
.auth-header h2 { font-size: 24px; margin-bottom: 5px; }
.auth-header p { color: var(--gray); font-size: 14px; }

/* ===== فرم‌ها ===== */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 13px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 15px; border: 2px solid var(--light-gray); border-radius: var(--radius-sm); font-family: inherit; font-size: 14px; transition: all 0.3s; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(211,47,47,0.1); }
.form-group .input-icon { position: relative; }
.form-group .input-icon input { padding-right: 42px; }
.form-group .input-icon i { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--gray); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.form-group textarea { resize: vertical; min-height: 80px; }

/* ===== صفحه محصولات ===== */
.search-header { background: linear-gradient(135deg, var(--primary), var(--secondary)); padding: 50px 20px; text-align: center; color: white; }
.search-header h1 { font-size: 32px; margin-bottom: 10px; }
.search-header p { opacity: 0.9; }
.search-filters { max-width: 1400px; margin: 0 auto; padding: 25px 20px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.filter-select { padding: 10px 18px; border: 2px solid var(--light-gray); border-radius: var(--radius-sm); font-family: inherit; font-size: 14px; background: white; cursor: pointer; transition: all 0.3s; }
.filter-select:focus { outline: none; border-color: var(--primary); }

/* ===== جزییات محصول ===== */
.product-detail { max-width: 1200px; margin: 0 auto; padding: 30px 20px; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.product-gallery { position: sticky; top: 100px; }
.main-image { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.main-image img { width: 100%; height: 450px; object-fit: contain; background: #f8f8f8; }
.product-detail-info h1 { font-size: 28px; margin-bottom: 12px; font-weight: 900; }
.product-detail-meta { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; flex-wrap: wrap; }
.detail-price { font-size: 30px; font-weight: 900; color: var(--primary); }
.detail-price-old { font-size: 20px; color: var(--gray); text-decoration: line-through; }
.detail-discount { background: var(--primary); color: white; padding: 4px 12px; border-radius: var(--radius-sm); font-size: 13px; font-weight: bold; }
.product-description { color: var(--gray); line-height: 2; margin-bottom: 25px; font-size: 14px; }
.product-features-list { margin-bottom: 25px; }
.product-features-list h3 { margin-bottom: 12px; font-size: 16px; }
.feature-item { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; color: var(--gray); font-size: 14px; }
.feature-item i { color: var(--secondary); }
.quantity-selector { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.quantity-selector label { font-weight: 700; font-size: 14px; }
.qty-btn { width: 36px; height: 36px; border: 2px solid var(--light-gray); background: white; border-radius: var(--radius-sm); cursor: pointer; font-size: 16px; transition: all 0.3s; }
.qty-btn:hover { border-color: var(--primary); color: var(--primary); }
.qty-input { width: 50px; height: 36px; text-align: center; border: 2px solid var(--light-gray); border-radius: var(--radius-sm); font-family: inherit; font-size: 15px; font-weight: 700; }
.detail-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ===== سبد خرید ===== */
.cart-container { max-width: 1400px; margin: 0 auto; padding: 30px 20px; }
.cart-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 35px; }
.cart-items { background: var(--white); border-radius: var(--radius); padding: 25px; box-shadow: var(--shadow); }
.cart-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 25px; padding-bottom: 15px; border-bottom: 2px solid var(--light); }
.cart-header h2 { font-size: 22px; }
.cart-item { display: grid; grid-template-columns: 80px 1fr auto; gap: 15px; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--light); }
.cart-item-image { width: 80px; height: 80px; border-radius: var(--radius-sm); overflow: hidden; background: var(--light); }
.cart-item-image img { width: 100%; height: 100%; object-fit: cover; }
.cart-item-info h4 { font-size: 15px; margin-bottom: 4px; }
.cart-item-info p { color: var(--gray); font-size: 12px; }
.cart-item-price { font-size: 16px; font-weight: 900; color: var(--primary); }
.cart-item-actions { display: flex; align-items: center; gap: 10px; }
.remove-item { color: var(--gray); cursor: pointer; transition: color 0.3s; background: none; border: none; font-size: 16px; }
.remove-item:hover { color: var(--primary); }
.cart-summary { background: var(--white); border-radius: var(--radius); padding: 25px; box-shadow: var(--shadow); position: sticky; top: 100px; height: fit-content; }
.cart-summary h3 { font-size: 18px; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--light); }
.summary-row { display: flex; justify-content: space-between; margin-bottom: 12px; color: var(--gray); font-size: 14px; }
.summary-row.total { font-size: 18px; font-weight: 900; color: var(--dark); padding-top: 12px; border-top: 2px solid var(--light); margin-top: 12px; }
.empty-cart { text-align: center; padding: 60px 20px; }
.empty-cart i { font-size: 60px; color: var(--light-gray); margin-bottom: 15px; }
.empty-cart h3 { font-size: 22px; margin-bottom: 8px; }
.empty-cart p { color: var(--gray); margin-bottom: 25px; }

/* ===== تسویه حساب ===== */
.checkout-container { max-width: 900px; margin: 0 auto; padding: 30px 20px; }
.checkout-steps { display: flex; justify-content: center; margin-bottom: 40px; gap: 15px; }
.step { display: flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: var(--radius-sm); background: var(--light); color: var(--gray); font-weight: 700; font-size: 14px; transition: all 0.3s; }
.step.active { background: var(--primary); color: white; }
.step.completed { background: var(--secondary); color: white; }
.step-number { width: 28px; height: 28px; border-radius: 50%; background: rgba(255,255,255,0.25); display: flex; align-items: center; justify-content: center; font-size: 13px; }
.checkout-form { background: var(--white); border-radius: var(--radius); padding: 35px; box-shadow: var(--shadow); }

.payment-methods { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 25px; }
.payment-method { border: 2px solid var(--light-gray); border-radius: var(--radius-sm); padding: 15px; text-align: center; cursor: pointer; transition: all 0.3s; }
.payment-method:hover, .payment-method.active { border-color: var(--primary); background: rgba(211,47,47,0.05); }
.payment-method i { font-size: 28px; margin-bottom: 8px; color: var(--primary); }
.payment-method h4 { font-size: 13px; }

/* ===== فوتر ===== */
.footer { background: var(--dark); color: white; padding: 50px 20px 25px; margin-top: 60px; }
.footer-inner { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 35px; margin-bottom: 30px; }
.footer-col h4 { font-size: 16px; margin-bottom: 15px; color: var(--accent); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.7); text-decoration: none; transition: color 0.3s; cursor: pointer; font-size: 14px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid rgba(255,255,255,0.08); color: rgba(255,255,255,0.4); font-size: 14px; }
.social-links { display: flex; gap: 12px; margin-top: 15px; }
.social-links a { width: 38px; height: 38px; background: rgba(255,255,255,0.08); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: white; transition: all 0.3s; text-decoration: none; }
.social-links a:hover { background: var(--primary); transform: translateY(-3px); }

/* ===== ابزارها ===== */
.toast-container { position: fixed; bottom: 25px; left: 25px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast { background: var(--dark); color: white; padding: 14px 22px; border-radius: var(--radius-sm); box-shadow: var(--shadow-hover); display: flex; align-items: center; gap: 10px; animation: slideIn 0.4s ease; min-width: 280px; font-size: 14px; }
.toast.success { background: var(--secondary); }
.toast.error { background: var(--primary); }
.toast i { font-size: 18px; }

.back-to-top { position: fixed; bottom: 25px; right: 25px; width: 44px; height: 44px; background: var(--primary); color: white; border: none; border-radius: var(--radius-sm); cursor: pointer; font-size: 18px; box-shadow: var(--shadow); transition: all 0.3s; opacity: 0; visibility: hidden; z-index: 999; }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-4px); background: var(--primary-dark); }

.mobile-menu-btn { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--dark); }

/* ===== ریسپانسیو ===== */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; text-align: center; }
    .hero-content h1 { font-size: 32px; }
    .hero-btns { justify-content: center; }
    .hero-image { display: none; }
    .features-inner { grid-template-columns: repeat(2, 1fr); }
    .product-detail-grid { grid-template-columns: 1fr; }
    .product-gallery { position: relative; top: 0; }
    .cart-grid { grid-template-columns: 1fr; }
    .cart-summary { position: relative; top: 0; }
    .footer-inner { grid-template-columns: repeat(2, 1fr); }
    .payment-methods { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .header-inner { flex-wrap: wrap; }
    .search-box { order: 3; max-width: 100%; flex-basis: 100%; margin-top: 8px; }
    .mobile-menu-btn { display: block; }
    .features-inner { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .product-card { border-radius: var(--radius-sm); }
    .product-image { height: 160px; }
    .modal-content { padding: 25px 20px; margin: 15px; }
    .form-row { grid-template-columns: 1fr; }
    .payment-methods { grid-template-columns: 1fr; }
    .checkout-steps { flex-direction: column; align-items: center; }
    .cart-item { grid-template-columns: 70px 1fr; }
    .cart-item-actions { grid-column: 1 / -1; justify-content: space-between; }
    .footer-inner { grid-template-columns: 1fr; text-align: center; }
    .social-links { justify-content: center; }
    .nav-categories { padding: 8px 0; }
    .nav-item { padding: 6px 14px; font-size: 12px; }
}
@media (max-width: 480px) {
    .hero-content h1 { font-size: 26px; }
    .section-header h2 { font-size: 22px; }
    .products-grid { grid-template-columns: 1fr; }
    .btn { padding: 10px 20px; font-size: 13px; }
    .btn-lg { padding: 12px 24px; font-size: 14px; }
}