@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 30px rgba(184,134,11,0.3); }
    50% { box-shadow: 0 0 50px rgba(184,134,11,0.5); }
}

.hero-section {
    width: 100%;
    background-color: var(--bg-color);
    margin-bottom: 5em;
    position: relative;
    overflow: hidden;
    padding: 40px 0 0;
}

.hero-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.deco-circle-1 {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(184,134,11,0.08), transparent);
    top: -250px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.deco-circle-2 {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 2px solid rgba(28,74,60,0.08);
    bottom: -150px;
    left: -50px;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 20px 80px;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text-area {
    animation: slideIn 0.8s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    /* background: white; */
    border-radius: 30px;
    color: var(--accent-gold);
    font-size: 11px;
    letter-spacing: 3px;
    font-weight: 600;
    margin-bottom: 30px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.05);
}

.hero-badge::before,
.hero-badge::after {
    content: "•";
    color: var(--accent-gold);
    font-size: 16px;
}

.hero-title {
    font-size: 48px;
    color: var(--primary-jade);
    margin: 0 0 24px;
    line-height: 1.3;
    font-weight: 400;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-jade), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text {
    font-size: 18px;
    color: var(--ink-85);
    line-height: 1.9;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-number {
    font-size: 36px;
    font-weight: 600;
    color: var(--primary-jade);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--ink-55);
    letter-spacing: 1px;
}

.hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    /* align-items: center; */
    justify-content: space-between;
    gap: 40px;
    position: relative;
    animation: fadeIn 0.8s ease-out;
}
    
.hero-copy {
    flex: 1 1 48%;
    max-width: 520px;
}
    
.hero-kicker {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent-gold);
    opacity: 0.85;
    margin-bottom: 10px;
}
    
.hero-title {
    font-size: 1.75rem;
    margin: 0 0 12px;
    color: var(--primary-jade);
    padding-top: 60px;
}
    
.hero-slogan {
    font-size: 1.125rem;
    color: var(--accent-gold);
    margin: 16px 0;
    font-style: italic;
    letter-spacing: 2px;
}

.hero-text {
    font-size: 0.875rem;
    opacity: 0.9;
}

.after-hero-spacer {
    height: 70px;
}

.book-showcase {
    position: absolute;
    width: 220px;
    height: 300px;
    /* background: white; */
    border-radius: 8px 24px 24px 8px;
    box-shadow: 0 25px 60px rgba(0,0,0,0.15);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.book-showcase:nth-child(1) {
    top: 50px;
    left: 0;
    z-index: 3;
    transform: rotate(-5deg);
}

.book-showcase:nth-child(2) {
    top: 100px;
    left: 80px;
    z-index: 2;
    transform: rotate(3deg);
}

.book-showcase:nth-child(3) {
    top: 150px;
    left: 160px;
    z-index: 1;
    transform: rotate(-2deg);
}

.book-showcase:hover {
    transform: translateY(-10px) rotate(0deg) scale(1.05);
    z-index: 10;
}

.book-cover {
    width: 100%;
    height: 75%;
    background-size: cover;
    background-position: center;
}

.book-info {
    padding: 15px;
    background: linear-gradient(135deg, white, var(--warm-cream));
}

.book-title {
    font-size: 14px;
    color: var(--primary-jade);
    margin: 0;
    font-weight: 500;
}

.book-author {
    font-size: 12px;
    color: rgba(44,44,44,0.6);
    margin-top: 4px;
}

.filter-section {
    /* background: white; */
    padding: 40px 0;
    margin-top: -40px;
    border-radius: 40px 40px 0 0;
    box-shadow: 0 -20px 60px rgba(0,0,0,0.05);
    position: relative;
    z-index: 5;
}

.filter-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    background: var(--bg-color);
    padding: 8px;
    border-radius: 35px;
    max-width: 700px;
    margin: 0 auto;
}

.filter-tab {
    flex: 1;
    padding: 14px 24px;
    text-align: center;
    cursor: pointer;
    color: var(--text-main);
    font-size: 15px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border-radius: 30px;
    font-weight: 500;
    position: relative;
}

.filter-tab:hover {
    background: rgba(255,255,255,0.5);
}

.filter-tab.active {
    /* background: white; */
    color: var(--primary-jade);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

.filter-count {
    display: inline-block;
    margin-left: 6px;
    padding: 2px 8px;
    background: var(--light-jade);
    border-radius: 12px;
    font-size: 12px;
    color: var(--primary-jade);
}

.ebooks-section {
    padding: 0px 0 100px;
    /* background: white; */
}

.ebooks-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.ebook-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.ebook-card {
    background: linear-gradient(135deg, var(--soft-white), var(--paper-2));
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    position: relative;
    display: flex;
    flex-direction: column;
}

.ebook-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--primary-jade));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.ebook-card:hover::before {
    transform: scaleX(1);
}

.ebook-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(28,74,60,0.15);
}

.ebook-cover-wrapper {
    position: relative;
    width: 100%;
    height: 350px;
    overflow: hidden;
    background: var(--light-jade);
}

.ebook-cover {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: all 0.4s ease;
}

.ebook-card:hover .ebook-cover {
    transform: scale(1.08);
}

.ebook-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 16px;
    /* background: white; */
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-gold);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    animation: float 3s ease-in-out infinite;
}

.ebook-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ebook-category {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--accent-gold);
    font-weight: 600;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.ebook-title {
    font-size: 20px;
    color: var(--primary-jade);
    margin: 0 0 12px;
    font-weight: 500;
    line-height: 1.4;
}

.ebook-description {
    font-size: 14px;
    color: rgba(44,44,44,0.7);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.ebook-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid rgba(28,74,60,0.08);
}

.ebook-info {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: rgba(44,44,44,0.6);
}

.ebook-info span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.download-btn {
    padding: 10px 20px;
    background: var(--primary-jade);
    color: white;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.download-btn:hover {
    background: var(--accent-gold);
    transform: translateX(5px);
}

.featured-section {
    padding: 80px 0;
    background: linear-gradient(180deg, white, var(--bg-color));
}

.featured-header {
    text-align: center;
    margin-bottom: 50px;
}

.featured-title {
    font-size: 36px;
    color: var(--primary-jade);
    margin-bottom: 12px;
}

.featured-subtitle {
    color: rgba(44,44,44,0.7);
    font-size: 16px;
}

.featured-book {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 60px;
    align-items: center;
    padding: 40px;
    /* background: white; */
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.featured-cover {
    position: relative;
    aspect-ratio: 3/4;
    background-size: cover;
    background-position: center;
    border-radius: 10px 30px 30px 10px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    animation: glow 4s ease-in-out infinite;
}

.featured-ribbon {
    position: absolute;
    top: 30px;
    left: -10px;
    padding: 10px 30px 10px 20px;
    background: var(--accent-gold);
    color: white;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 5px 15px rgba(184,134,11,0.3);
}

.featured-ribbon::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    border-left: 10px solid transparent;
    border-top: 10px solid rgba(184,134,11,0.8);
}

.featured-info h3 {
    font-size: 32px;
    color: var(--primary-jade);
    margin-bottom: 16px;
}

.featured-author {
    font-size: 16px;
    color: var(--accent-gold);
    margin-bottom: 24px;
}

.featured-desc {
    font-size: 16px;
    color: rgba(44,44,44,0.8);
    line-height: 1.9;
    margin-bottom: 32px;
}

.featured-actions {
    display: flex;
    gap: 16px;
}

.btn-primary {
    padding: 16px 32px;
    background: var(--primary-jade);
    color: white;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(184,134,11,0.3);
}

@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-visual {
        display: none;
    }
    .ebook-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    .featured-book {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 32px;
    }
    .filter-tabs {
        flex-direction: column;
    }
    .ebook-grid {
        grid-template-columns: 1fr;
    }
}