/* ===== BookMart - Home Page Styles ===== */

/* Hero Section - image override (common.css has the rest) */
.hero-image img {
    width: 350px;
    height: 350px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    animation: float 3s ease-in-out infinite;
}

/* ===== Featured Books Section ===== */
.featured-books {
    padding: var(--spacing-2xl) 0;
}

.featured-books-alt {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

/* ===== Popular Categories Section ===== */
.popular-categories {
    padding: var(--spacing-2xl) 0;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.category-card {
    display: block;
    text-align: center;
    padding: 30px 20px;
    background: rgba(19, 34, 56, 0.45);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    transition: transform .35s cubic-bezier(.22,.61,.36,1), box-shadow .35s ease, border-color .35s ease, background .35s ease;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Animated sheen sweep on hover */
.category-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 60%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.12), transparent);
    transform: skewX(-18deg);
    transition: left .7s ease;
    pointer-events: none;
}

.category-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: rgba(78, 168, 222, 0.45);
    background: rgba(28, 48, 72, 0.6) !important;
}

.category-card:hover::after { left: 130%; }

.category-card:hover .category-icon {
    transform: scale(1.08) rotate(-3deg);
    box-shadow: var(--shadow-gold);
}
.category-icon { transition: transform .35s ease, box-shadow .35s ease; }

.category-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 10px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-accent);
}
.category-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* ===== Book Exchange Preview Section ===== */
.book-exchange-preview {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
    position: relative;
    overflow: hidden;
}

.book-exchange-preview::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
}

.book-exchange-preview::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
}

.exchange-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.exchange-content h2 {
    color: var(--text-white);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.exchange-content h2 span {
    color: var(--secondary);
}

.exchange-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.exchange-steps {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.exchange-step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.exchange-step:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.step-num {
    width: 36px;
    height: 36px;
    background: var(--accent);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-text h4 {
    color: var(--text-white);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    margin-bottom: 3px;
}

.step-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.82rem;
    margin: 0;
}

.exchange-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.exchange-image img {
    width: 450px;
    max-width: 110%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===== Why Choose BookMart Section ===== */
.why-choose {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-md);
    background: var(--bg-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== CTA Banner Section ===== */
.cta-banner {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--text-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50" font-size="20" fill="rgba(255,255,255,0.05)">📚</text></svg>');
    background-size: 80px;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--text-white);
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn-light {
    background: var(--text-white);
    color: var(--accent);
    border-color: var(--text-white);
}

.cta-buttons .btn-light:hover {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

.cta-buttons .btn-outline-light {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

.cta-buttons .btn-outline-light:hover {
    background: var(--text-white);
    color: var(--accent);
}



/* ===== Section Views All Link ===== */
.section-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .exchange-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .exchange-image {
        display: none;
        size: 500px;
    }
    
    .exchange-steps {
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
    
    .exchange-steps {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 1.5rem;
    }
    
    .newsletter-form-wrap {
        flex-direction: column;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-card {
        padding: 20px 15px;
    }
    
    .hero-content h1 {
        font-size: 1.6rem;
    }
}