:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --text-dark: #2d3436;
    --text-light: #636e72;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
}

.navbar {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.main-content {
    padding: 2rem 0;
}

.header-section {
    margin-bottom: 3rem;
}

.header-section h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-dark);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.header-section h2 {
    font-size: 1.5rem;
    color: var(--text-light);
}

.book-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.book-cover img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}

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

.book-content h2 {
    color: var(--text-dark);
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.book-content h3 {
    color: var(--text-light);
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
}

.book-description {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.primary-button {
    background: linear-gradient(45deg, #ff9a9e 0%, #fad0c4 99%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.secondary-button {
    background: #f1f2f6;
    color: var(--text-dark);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}