/* Reset og basis styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    background-color: hsl(30 50% 8%);
    background-color: #fff;
}

.app {
    min-height: 100dvh;
    display: grid;
    grid-template-rows: auto 1fr auto;
}

/* Header & Navigation */
header {
    background-color: #2c3e50;
    background-color: hsl(30 50% 20%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-brand h1 {
    font-size: 1.5rem;
}

.nav-brand a {
    color: inherit;
    text-decoration: none;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
    font-weight: 500;
}

.nav-menu a:hover {
    opacity: 0.8;
}

/* Main container */
.container {
    max-width: 1200px;
    margin: 2rem auto;
}

.container > h1 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

/* Hero Section */
.hero {
    background: hsl(210deg 29% 50%);
    background-color: hsl(30 50% 30%);;
    color: white;
    padding: 4rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Card Strip */
.card-strip {
    margin-bottom: 3rem;
}

.card-strip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-strip-header h2 {
    color: #333;
}

.view-all {
    color: #ccc;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.view-all:hover {
    color: #764ba2;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

/* Books grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
}

/* Book card */
.book-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    border: solid .1rem #eee;
}


.book-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.book-cover {
    width: 100%;
    height: 280px;
    overflow: hidden;
    background-color: #e0e0e0;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-info {
    padding: 1.5rem;
}

.book-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.book-info .author {
    color: #7f8c8d;
    font-style: italic;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.book-info .description {
    color: #555;
    line-height: 1.6;
    font-size: 0.95rem;
}

.book-info .published {
    color: #95a5a6;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Authors grid */
.authors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

/* Author card */
.author-card {
    background: #eee;
    background-color: hsl(30 50% 95%);
    border-radius: 8px;
    overflow: hidden;
    border: solid .1rem #eee;
}


.author-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    padding: 1.5rem;
}

.author-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.author-info .country {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.author-info .biography {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 2rem;
    color: #7f8c8d;
}

.breadcrumb a {
    color: #333;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Book Detail */
.book-detail {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 3rem;
    background: white;
}

.book-detail-cover img {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

.book-detail-content h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.book-author {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin-bottom: 0.5rem;
}

.book-author a {
    color: #333;
    text-decoration: none;
}

.book-author a:hover {
    text-decoration: underline;
}

.book-published {
    color: #95a5a6;
    margin-bottom: 2rem;
}

.book-description {
    margin-bottom: 2rem;
}

.book-description h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.book-description p {
    color: #555;
    line-height: 1.8;
}

/* Author Detail */
.author-detail {
    background: white;
}

.author-detail-header {
    margin-bottom: 2rem;
}

.author-detail-header h1 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.author-country {
    color: #7f8c8d;
    font-size: 1.1rem;
}

.author-biography {
    margin-bottom: 3rem;
    border-radius: .5rem;
    background-color: hsl(30 50% 90%);
    padding: 2rem;
}

.author-biography h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.author-biography p {
    color: #555;
    line-height: 1.8;
}

.author-books h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

/* Buttons */
.button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #333;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-weight: 500;
}


.book-actions,
.author-actions {
    margin-top: 2rem;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: #7f8c8d;
}

/* Error state */
.error {
    background-color: #ffebee;
    border-left: 4px solid #f44336;
    padding: 1.5rem;
    border-radius: 4px;
    margin: 2rem 0;
}

.error h1 {
    color: #c62828;
    margin-bottom: 0.5rem;
}

.error p {
    color: #d32f2f;
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background-color: hsl(30 50% 20%);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .books-grid,
    .authors-grid,
    .card-grid {
        grid-template-columns: 1fr;
    }

    .book-detail {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .book-detail-cover {
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .card-strip-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}