/* Hero Section */
/* Styles for the main hero banner at the top of the homepage. */
#hero-section {
    position: relative;
    height: auto;
    color: var(--text-900);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;

    max-width: none;
    margin-left: 0;
    margin-right: 0;
    padding: 0;

}

/* Hero Background */
/* Pseudo-element creating the blurred background image with gradient overlay. */
#hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-primary);
    background: linear-gradient(0deg, var(--color-bg-primary) 0%, rgba(255, 255, 255, 0) 80%), url('/assets/images/book-banner.png');
    background-size: cover;
    background-position: center;
    filter: blur(3px);
    opacity: 0.5;
    z-index: -1;
}

/* Hero Content */
/* Styles for the text content (heading, paragraph) within the hero section. */
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
}

.hero-content h1 {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-md);
    font-weight: bold;
}

.hero-content p {
    font-family: var(--font-body);
    font-size: var(--text-md);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Content sections on the homepage (e.g., Featured, Genres). */
section {
    margin-bottom: var(--spacing-xxl);
    padding: 0 var(--spacing-md);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

section h2 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}


/* Featured Books Grid */
#featured-books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
}


/* Genre Buttons Section */
#genre-buttons-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

/* Individual Genre Button */
.genre-button {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 2px solid var(--background-300);
    border-radius: var(--border-radius-full);
    text-decoration: none;
    font-family: var(--font-button);
    font-size: var(--text-sm);
    transition: all var(--transition-speed) var(--transition-timing);
}

.genre-button:hover {
    background-color: var(--color-accent-default);
    color: var(--color-bg-primary);
    border-color: var(--color-accent-default);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.genre-icon {
    margin-right: 8px;
}


/* Loading/Error Messages */
/* loading indicators or error messages (e.g., when fetching books). */
.loading-message,
.error-message {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
}

.error-message {
    color: var(--color-danger);
}


/* Responsive Styles */
/* Adjustments for smaller screen sizes (tablets and mobiles). */
@media (max-width: 768px) {
    .hero-content {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-content h1 {
        font-size: var(--text-xl);
    }

    .hero-content p {
        font-size: var(--text-sm);
    }

    #featured-books-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }

    .genre-button {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--text-xs);
    }
}

/* Customer Reviews Section */
#customer-reviews-section {
    margin-bottom: var(--spacing-xxl);
}

#customer-reviews-section h2 {
    margin-bottom: var(--spacing-lg); /* Ensure consistent spacing below title */
}

.reviews-marquee-container {
    overflow: hidden;
    width: 100%;
    padding: var(--spacing-sm) 0;
    position: relative;
}


.reviews-marquee-container::before,
.reviews-marquee-container::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50px;
    z-index: 2;
    pointer-events: none; 
}

.reviews-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, var(--color-bg-primary), transparent);
}

.reviews-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, var(--color-bg-primary), transparent);
}


.reviews-marquee-content {
    display: flex;
    width: 200%; /* Because we duplicated the content */
    animation: marquee-scroll 60s linear infinite;
    will-change: transform; 
}

.reviews-marquee-container:hover .reviews-marquee-content {
    animation-play-state: paused;
}

@keyframes marquee-scroll {
    0% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(-50%); /* Scrolls one full set of reviews */
    }
}

.review-card {
    flex-shrink: 0;
    width: calc(100% / 6 - var(--spacing-lg)); /* Divide by total cards (6), subtract margin */
    padding: var(--spacing-lg);
    margin-right: var(--spacing-lg); 
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--background-300);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column; 
    justify-content: space-between;
    min-height: 150px;
}

.review-card p {
    margin-bottom: var(--spacing-sm);
    font-style: italic;
    font-size: var(--text-sm); 
    line-height: 1.5;
    flex-grow: 1;
}

.review-card p.author {
    font-weight: bold;
    text-align: right;
    color: var(--color-text-secondary);
    font-size: var(--text-xs);
    font-style: normal; 
    margin-top: var(--spacing-md); 
    margin-bottom: 0; 
    flex-grow: 0; 
}


@media (max-width: 768px) {
    .review-card {
        width: calc(100% / 4 - var(--spacing-lg));
        min-height: auto; /* Reset min-height */
    }

}

@media (max-width: 480px) {
    .review-card {
        width: calc(100% / 2 - var(--spacing-lg)); 
    }
     .reviews-marquee-container::before,
     .reviews-marquee-container::after {
        width: 25px;
     }
}

@media (prefers-reduced-motion: reduce) {
    .reviews-marquee-content {
        animation: none;
        transform: translateX(0); 
    }
}