booknap project/styles.css

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(180deg, #3b82f6, #6366f1);
    min-height: 100vh;
}

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

/* Header and Navigation */
.header {
    background: linear-gradient(90deg, #3b82f6, #6366f1);
    box-shadow: 0 2px 20px rgba(59, 130, 246, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-logo i {
    font-size: 1.8rem;
    color: #ffffff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #ffffff;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* Book Details Section */
.book-details {
    padding: 4rem 0;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: white;
}

.book-header {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
}

.book-cover-large {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.book-cover-large:hover {
    transform: translateY(-10px);
}

.book-cover-large img {
    width: 100%;
    height: auto;
    display: block;
}

.book-info-large h1 {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.book-author {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.book-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.book-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: linear-gradient(90deg, #3b82f6, #6366f1);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-2px);
}

/* Summary Section */
.summary-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: white;
}

.summary-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 2rem;
    text-align: center;
}

.summary-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
}

.summary-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin: 2rem 0 1rem 0;
}

.summary-content p {
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.summary-content ul, .summary-content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.summary-content li {
    margin-bottom: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
}

.summary-content strong {
    color: white;
    font-weight: 600;
}

/* Audio Section */
.audio-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #6366f1, #3b82f6);
    color: white;
}

.audio-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.audio-player {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.audio-info {
    text-align: center;
    margin-bottom: 2rem;
}

.audio-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.audio-info p {
    opacity: 0.9;
}

.audio-controls {
    margin-bottom: 2rem;
}

.audio-controls audio {
    width: 100%;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
}

.audio-duration {
    text-align: center;
    margin-top: 1rem;
    opacity: 0.8;
}

.audio-features {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.feature-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.feature-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Related Books Section */
.related-books {
    padding: 4rem 0;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: white;
}

.related-books h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 2rem;
    text-align: center;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.book-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.15);
}

.book-cover {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.book-card:hover .book-cover img {
    transform: scale(1.05);
}

.book-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(59, 130, 246, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-overlay i {
    color: white;
    font-size: 2rem;
}

.book-card:hover .book-overlay {
    opacity: 1;
}

.book-info {
    padding: 1.5rem;
}

.book-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.book-info .book-author {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.book-info .book-category {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

/* Footer */
.footer {
    background: linear-gradient(90deg, #3b82f6, #6366f1);
    color: white;
    text-align: center;
    padding: 2rem 0;
}

.footer p {
    opacity: 0.8;
}

/* Animated Tabs Section - Blinkist Style */
.animated-tabs-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    overflow: hidden;
}

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

.tabs-header {
    text-align: center;
    margin-bottom: 4rem;
}

.tabs-header h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tabs-header p {
    font-size: 1.2rem;
    color: #4a5568;
    max-width: 600px;
    margin: 0 auto;
}

.tabs-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.tabs-nav {
    display: flex;
    background: white;
    border-radius: 50px;
    padding: 0.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.tab-button {
    background: none;
    border: none;
    padding: 1rem 2rem;
    border-radius: 40px;
    font-size: 1rem;
    font-weight: 600;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-button.active {
    color: white;
}

.tab-button i {
    font-size: 1.2rem;
}

.tab-slider {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    height: calc(100% - 1rem);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.tabs-content {
    width: 100%;
    max-width: 1000px;
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeInUp 0.6s ease-out;
}

.tab-panel.active {
    display: block;
}

.tab-panel-content {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.tab-panel-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Tab-specific styles */
.read-tab {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.read-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1rem;
}

.read-content p {
    font-size: 1.1rem;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.read-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.read-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.read-feature:hover {
    background: #e2e8f0;
    transform: translateX(10px);
}

.read-feature i {
    font-size: 1.5rem;
    color: #667eea;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.read-feature-text h4 {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.read-feature-text p {
    font-size: 0.9rem;
    color: #4a5568;
    margin: 0;
}

.read-visual {
    position: relative;
    text-align: center;
}

.read-visual img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.listen-tab {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.listen-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1rem;
}

.listen-content p {
    font-size: 1.1rem;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.listen-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.listen-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.listen-feature:hover {
    background: #e2e8f0;
    transform: translateX(10px);
}

.listen-feature i {
    font-size: 1.5rem;
    color: #667eea;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.listen-feature-text h4 {
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.listen-feature-text p {
    font-size: 0.9rem;
    color: #4a5568;
    margin: 0;
}

.listen-visual {
    position: relative;
    text-align: center;
}

.listen-visual img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.learn-tab {
    text-align: center;
}

.learn-content h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 1.5rem;
}

.learn-content p {
    font-size: 1.2rem;
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.learn-card {
    background: #f8fafc;
    border-radius: 15px;
    padding: 2rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.learn-card:hover {
    background: white;
    border-color: #667eea;
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.learn-card i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.learn-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 1rem;
}

.learn-card p {
    font-size: 1rem;
    color: #4a5568;
    line-height: 1.6;
    margin: 0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .book-header {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .book-cover-large {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .book-info-large h1 {
        font-size: 2rem;
    }
    
    .book-actions {
        justify-content: center;
    }
    
    .summary-content {
        font-size: 1rem;
    }
    
    .audio-player {
        margin: 0 1rem;
    }
    
    .books-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }

    /* Animated Tabs Responsive */
    .tabs-header h2 {
        font-size: 2rem;
    }
    
    .tabs-nav {
        flex-direction: column;
        border-radius: 20px;
        padding: 0.25rem;
    }
    
    .tab-button {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .tab-slider {
        display: none;
    }
    
    .tab-button.active {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
    }
    
    .read-tab,
    .listen-tab {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .tab-panel-content {
        padding: 2rem;
    }
    
    .learn-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .book-info-large h1 {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .summary-section h2,
    .audio-section h2,
    .related-books h2 {
        font-size: 2rem;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }

    /* Animated Tabs Mobile */
    .tabs-header h2 {
        font-size: 1.75rem;
    }
    
    .tabs-header p {
        font-size: 1rem;
    }
    
    .tab-panel-content {
        padding: 1.5rem;
    }
    
    .read-content h3,
    .listen-content h3 {
        font-size: 1.5rem;
    }
    
    .learn-content h3 {
        font-size: 2rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
}