/* ============================================================
   کتابخانه ساوینا - استایل اصلی
   رنگ‌ها: #780000 | #C1121F | #FDF0D5 | #003049 | #669BBC
   ============================================================ */

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #780000;
    --secondary: #C1121F;
    --bg: #FDF0D5;
    --dark: #003049;
    --accent: #669BBC;
    --white: #FFFFFF;
    --gray: #6c757d;
    --light-gray: #f8f9fa;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Vazir', 'Tahoma', 'Arial', sans-serif;
    background: var(--bg);
    color: var(--dark);
    line-height: 1.6;
    direction: rtl;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: var(--transition);
}
a:hover {
    color: var(--secondary);
}

img {
    max-width: 100%;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* ===== HEADER ===== */
header {
    background: var(--dark);
    color: var(--white);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--white);
}
.logo span {
    color: var(--accent);
}
.logo i {
    color: var(--secondary);
    margin-left: 8px;
}

.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 8px 18px;
    flex: 1;
    max-width: 450px;
    min-width: 200px;
    border: 2px solid transparent;
    transition: var(--transition);
}
.search-box:focus-within {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.15);
}
.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--white);
    padding: 8px 10px;
    width: 100%;
    font-size: 0.95rem;
}
.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}
.search-box button {
    background: transparent;
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 5px;
}
.search-box button:hover {
    color: var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cart-icon {
    position: relative;
    font-size: 1.5rem;
    color: var(--white);
    transition: var(--transition);
}
.cart-icon:hover {
    color: var(--accent);
}
.cart-count {
    position: absolute;
    top: -10px;
    right: -12px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    width: 22px;
    height: 22px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.user-menu {
    position: relative;
}
.user-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}
.user-btn:hover {
    background: var(--secondary);
    border-color: var(--secondary);
}

.user-dropdown {
    position: absolute;
    top: 50px;
    left: 0;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    padding: 10px 0;
    display: none;
    z-index: 100;
}
.user-dropdown.open {
    display: block;
}
.user-dropdown a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}
.user-dropdown a:hover {
    background: var(--bg);
    color: var(--primary);
}
.user-dropdown a i {
    width: 20px;
    color: var(--primary);
}
.user-dropdown .user-info {
    padding: 10px 20px;
    border-bottom: 1px solid #eee;
}
.user-dropdown .user-info strong {
    color: var(--dark);
}
.user-dropdown .user-info small {
    color: var(--gray);
    font-size: 0.8rem;
}
.user-dropdown hr {
    border: none;
    border-top: 1px solid #eee;
    margin: 5px 0;
}

/* ===== BANNER ===== */
.banner {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 50px 20px;
    text-align: center;
    color: var(--white);
    margin-bottom: 30px;
}
.banner h1 {
    font-size: 2.8rem;
    font-weight: bold;
    margin-bottom: 10px;
}
.banner h1 i {
    color: var(--bg);
}
.banner p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 20px;
}
.banner-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.banner-stats span {
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 8px 20px;
    border-radius: 30px;
}
.banner-stats i {
    margin-left: 8px;
}

/* ===== FILTERS ===== */
.filters {
    background: var(--white);
    padding: 20px 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    justify-content: center;
    border-bottom: 2px solid #eee;
    position: sticky;
    top: 75px;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.filters select {
    padding: 10px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    background: var(--white);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
    min-width: 140px;
}
.filters select:focus {
    border-color: var(--primary);
}
.filters label {
    font-weight: bold;
    color: var(--dark);
    font-size: 0.9rem;
}
.filter-reset {
    background: var(--secondary);
    color: var(--white);
    border: none;
    padding: 10px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: var(--transition);
    text-decoration: none;
}
.filter-reset:hover {
    background: var(--primary);
    transform: scale(1.05);
}

/* ===== BOOKS ===== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0 20px;
}
.section-header h2 {
    color: var(--dark);
    font-size: 1.8rem;
}
.section-header h2 i {
    color: var(--secondary);
    margin-left: 10px;
}
#booksCount {
    color: var(--gray);
    font-size: 0.95rem;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}

.book-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(120, 0, 0, 0.15);
}

.book-card .book-image {
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--white);
    position: relative;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.book-card .book-image .badge {
    position: absolute;
    top: 12px;
    right: 12px;
    color: var(--white);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: bold;
}
.book-card .book-image .badge.featured {
    background: var(--accent);
}
.book-card .book-image .badge.new {
    background: #00b894;
}
.book-card .book-image .badge.bestseller {
    background: #fdcb6e;
    color: var(--dark);
}

.book-card .book-info {
    padding: 18px 20px 20px;
}
.book-card .book-info .category {
    font-size: 0.7rem;
    color: var(--secondary);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.book-card.book-info h3 {
    font-size: 1.1rem;
    margin: 6px 0 4px;
    color: var(--dark);
}
.book-card .book-info .author {
    font-size: 0.85rem;
    color: var(--gray);
}
.book-card .book-info .author i {
    color: var(--accent);
}
.book-card .book-info .price-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 12px 0;
}
.book-card .book-info .price {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary);
}
.book-card .book-info .old-price {
    font-size: 0.9rem;
    color: #b2bec3;
    text-decoration: line-through;
}
.book-card .book-info .discount {
    color: var(--secondary);
    font-weight: bold;
    font-size: 0.85rem;
}
.book-card .book-info .rating {
    color: #fdcb6e;
    font-size: 0.9rem;
    margin-bottom: 10px;
}
.book-card .book-info .rating span {
    color: var(--gray);
    margin-right: 5px;
}

.book-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}
.book-actions .btn-detail {
    flex: 1;
    padding: 10px;
    background: var(--bg);
    color: var(--dark);
    border-radius: 8px;
    text-align: center;
    font-size: 0.85rem;
    transition: var(--transition);
    text-decoration: none;
}
.book-actions .btn-detail:hover {
    background: var(--primary);
    color: var(--white);
}
.book-actions .add-to-cart {
    padding: 10px 16px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}
.book-actions .add-to-cart:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(193, 18, 31, 0.3);
}

/* ===== FOOTER ===== */
footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 50px 20px 30px;
    margin-top: 60px;
}
.footer-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}
.footer-grid h3 {
    color: var(--white);
    margin-bottom: 15px;
}
.footer-grid h3 i {
    color: var(--accent);
}
.footer-grid a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    padding: 5px 0;
    transition: var(--transition);
}
.footer-grid a:hover {
    color: var(--accent);
}
.footer-bottom {
    max-width: 1280px;
    margin: 30px auto 0;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}
.social i {
    font-size: 1.5rem;
    margin: 0 10px;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    cursor: pointer;
}
.social i:hover {
    color: var(--accent);
    transform: translateY(-3px);
}

/* ===== NOTIFICATION ===== */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 15px 25px;
    border-radius: var(--radius);
    color: var(--white);
    z-index: 5000;
    display: none;
    animation: slideUp 0.5s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.notification.success {
    background: #00b894;
}
.notification.error {
    background: var(--secondary);
}
@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 15px;
    }
    .search-box {
        max-width: 100%;
        width: 100%;
    }
    .filters {
        top: 120px;
        padding: 15px;
        gap: 10px;
    }
    .filters select {
        min-width: 100px;
        font-size: 0.8rem;
        padding: 8px 12px;
    }
    .books-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
    .book-card .book-image {
        height: 200px;
        font-size: 3rem;
    }
    .banner h1 {
        font-size: 2rem;
    }
    .banner-stats {
        gap: 15px;
    }
    .banner-stats span {font-size: 0.9rem;
        padding: 5px 15px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .books-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .book-card .book-info {
        padding: 12px;
    }
    .book-card .book-info h3 {
        font-size: 0.9rem;
    }
    .book-card .book-info .price {
        font-size: 1rem;
    }
    .book-actions .add-to-cart {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    .book-actions .btn-detail {
        font-size: 0.75rem;
        padding: 8px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}