/* Root Variables */
:root {
    /* Color Palette inspired by honey yellow */
    --primary-color: #FFC30B; /* Honey Yellow */
    --secondary-color: #FFFFFF; /* White for text on dark backgrounds */
    --background-color: #1A1A1A; /* Dark background */
    --card-background: #2A2A2A; /* Slightly lighter dark for cards */
    --text-color: #FFFFFF; /* White text */
    --muted-text-color: #CCCCCC; /* Light gray for muted text */
    --border-color: #444444; /* Dark gray borders */
    --shadow-color: rgba(0, 0, 0, 0.5);
    --hover-shadow-color: rgba(0, 0, 0, 0.7);
    --background-gradient: linear-gradient(135deg, #1A1A1A, #333333);
    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --font-size-base: 16px;
    --font-size-lg: 1.5rem;
    --font-size-md: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-xs: 0.75rem; /* Added for smaller text */

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 10px;
    --spacing-md-wd: 2px;
    --spacing-lg: 24px;
    --spacing-xl: 10px;
    --spacing-bk: 5px;
    --spacing-header: 60px; /* Height of the header */

    /* Border Radius */
    --border-radius-sm: 0px; /* Square corners */
    --border-radius-md: 0px;
    --border-radius-lg: 0px;

    /* Transition */
    --transition-speed: 0.3s;
    --transition-ease: ease-in-out;
}

/* Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}
* {
    transition: all 0.3s ease-in-out;
}
body, html {
    min-height: 100vh;
    background: linear-gradient(135deg, #1A1A1A, #333333); /* Example gradient */
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.6;
    font-size: var(--font-size-base);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.cursor-pointer {
    cursor: pointer;
}

.transition {
    transition: all var(--transition-speed) var(--transition-ease);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--background-color);
    box-shadow: 0 2px 4px var(--shadow-color);
    z-index: 1000;
}

.header .search-profile-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1800px;
    padding: 0 var(--spacing-md);
    margin: 0 auto;
    height: var(--spacing-header);
}

.header .search-bar {
    flex-grow: 1;
    margin-right: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-md);
    background-color: var(--card-background);
    color: var(--text-color);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.header .search-bar::placeholder {
    color: var(--muted-text-color);
}

.header .search-bar:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.header .profile-icon {
    color: var(--secondary-color);
    text-decoration: none;
    cursor: pointer;
    position: relative;
}

.header .profile-icon svg, 
.header .profile-icon img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    transition: transform var(--transition-speed);
}

/* Dropdown Styles */
.dropdown-menu {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
}

.dropdown-item {
    font-size: var(--font-size-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    display: flex;
    align-items: center;
}

.dropdown-item i {
    margin-right: var(--spacing-sm);
}

.dropdown-item:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* Main Container Styles */
.main-container {
    max-width: 1800px;
    margin: var(--spacing-header) auto 0 auto; /* Added top margin to account for fixed header */
    padding: var(--spacing-xl) var(--spacing-md);
    padding-top: var(--spacing-md); /* Adjusted padding to prevent content overlap */
    padding-bottom: var(--spacing-xl);
}

/* Book Section Styles */
.book-section {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding: 0 var(--spacing-md-wd);
}

.section-heading {
    font-family: 'Space Mono', monospace;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Removed the underline from section headings */
.section-heading::after {
    content: none;
}

/* Scrollable Container */
.books-scroll-container {
    display: flex;
    overflow-x: auto;
    gap: var(--spacing-bk);
    padding-bottom: var(--spacing-md);
    scroll-snap-type: x mandatory;
}

.books-scroll-container::-webkit-scrollbar {
    display: none;
}

.books-scroll-container {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Navigation Arrows */
.scroll-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background-color: var(--card-background);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--shadow-color);
    z-index: 10;
    transition: background-color var(--transition-speed), color var(--transition-speed), transform var(--transition-speed);
    color: var(--text-color);
    transition: transform 0.3s;
}

.scroll-arrow i {
    font-size: 1.5rem;
}

.scroll-arrow:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    transform: translateY(-50%) scale(1.05); /* Removed hover scale */
}

.scroll-arrow.left {
    left: var(--spacing-md);
}

.scroll-arrow.right {
    right: var(--spacing-md);
}

.scroll-arrow.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Book Card Styles */
.book-card {
    flex: 0 0 auto;
    width: 240px;
    height: 360px;
    position: relative;
    transition: transform var(--transition-speed);
    scroll-snap-align: start;
    cursor: pointer; /* Make entire card clickable */
}

/* Progress Bar for Last Read Books */
.book-card.last-read .progress-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 0;
}

.book-card.last-read .progress {
    height: 6px; /* Thin horizontal line */
    border-radius: 0;
    background-color: rgba(255, 255, 255, 0.99);
    margin: 0;
}

.book-card.last-read .progress-bar {
    background-color: var(--primary-color);
    width: 0%;
    transition: width var(--transition-speed);
}

/* Book Cover Wrapper */
.book-cover-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--card-background); /* Match card background */
    border-radius: var(--border-radius-md); /* Square corners */
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color); /* Consistent border */
}

.book-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-speed);
}

/* Book Overlay Styles */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    opacity: 1;
    transition: none;
    padding: 0;
    z-index: 1; /* Ensure overlay is below the progress bar */
}

/* Progress Container */
.overlay .progress-container {
    width: 100%;
    padding: 0;
    position: absolute;
    bottom: 0;
    left: 0;
}

/* Progress Bar */
.overlay .progress {
    height: 4px;
    border-radius: 0;
    background-color: rgba(255, 255, 255);
    margin: 0;
}

.overlay .progress-bar {
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
}

/* Progress Container for Non-LastReadBooks Sections */
.book-card:not(.last-read) .progress-container {
    position: absolute;
    bottom: 10px; /* Adjust as needed */
    left: 50%;
    transform: translateX(-50%);
    width: 90%; /* Adjust width as needed */
    z-index: 2; /* Ensure it's above the overlay */
}

.book-card:not(.last-read) .progress-container .progress {
    height: 8px; /* Adjust thickness as desired */
    border-radius: 4px; /* Slightly rounded corners */
    background-color: rgba(255, 255, 255, 0);
}

.book-card:not(.last-read) .progress-container .progress-bar {
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
}

/* Book Information Styles */
.book-info {
    font-family: 'Space Mono', monospace;
    font-size: var(--font-size-md);
    font-weight: 200;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    text-align: center;
    /* Square corners */
}

.book-title {
    font-family: 'Space Mono', monospace;
    font-size: var(--font-size-xs);
    font-weight: 200;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-author {
    font-family: 'Space Mono', monospace;
    font-size: var(--font-size-xs);
    font-weight: 200;
    margin: var(--spacing-xs) 0;
    color: var(--muted-text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-pages {
    font-size: var(--font-size-sm);
    margin: var(--spacing-xs) 0;
    color: var(--muted-text-color);
}

/* Upload Overlay */
.upload-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 195, 11, 0.1); /* Slight honey-yellow tint */
    display: flex;
    flex-direction: column;
    justify-content: flex-end; /* Align progress bar at the bottom */
    align-items: center;
    z-index: 10;
    transition: all var(--transition-speed);
    padding-bottom: var(--spacing-sm); /* Add padding to prevent overlap with card borders */
}

/* Progress Bar */
.upload-overlay .progress {
    width: 100%; /* Full width of the card */
    height: 6px; /* Thin progress bar */
    background-color: var(--border-color); /* Border color as background */
    margin: 0;
    overflow: hidden; /* Ensure no overflow */
    border: none; /* Remove borders */
}

.upload-overlay .progress-bar {
    background-color: var(--primary-color); /* Honey Yellow */
    width: 0%; /* Initial state */
    height: 100%; /* Match the height of the progress container */
    transition: width var(--transition-speed);
}

/* Upload Status */
.upload-overlay .upload-status {
    position: absolute;
    bottom: 10px; /* Place above the progress bar */
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-xs);
    color: var(--text-color); /* Match text color */
    margin: 0;
}


/* Add Book Card Enhanced Styles */
.add-book-card {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: var(--card-background); /* Match card background */
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md); /* Keep square corners */
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
}

.add-book-card.uploading {
    background-color: var(--primary-color); /* Match yellow theme */
    box-shadow: 0 8px 24px var(--hover-shadow-color);
}

.add-book-card .upload-message {
    color: var(--text-color);
    font-size: var(--font-size-md);
    text-align: center;
}


/* Responsive Adjustments */
@media (max-width: 1200px) {
    .book-card {
        width: 220px;
        height: 330px;
    }
    .add-book-card {
        width: 220px;
        height: 330px;
    }
}

@media (max-width: 992px) {
    .book-card {
        width: 200px;
        height: 300px;
    }
    .add-book-card {
        width: 200px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .book-card {
        width: 180px;
        height: 270px;
    }
    .add-book-card {
        width: 180px;
        height: 270px;
    }

    .search-bar {
        width: 80%;
    }

    .profile-icon {
        align-self: flex-end;
    }

    .section-heading {
        font-size: var(--font-size-md);
    }

    .book-title {
        font-size: var(--font-size-sm);
    }

    .book-author {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 576px) {
    .book-card {
        width: 150px;
        height: 225px;
    }
    .add-book-card {
        width: 150px;
        height: 225px;
    }

    .book-title {
        font-size: var(--font-size-xs);
    }

    .book-author {
        font-size: 0.75rem;
    }
}

/* Toast Notifications */
.toast {
    min-width: 250px;
    background-color: var(--card-background);
    color: var(--text-color);
    box-shadow: 0 2px 8px var(--shadow-color);
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 1050;
    border-radius: var(--border-radius-md);
}

.toast .toast-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.toast .toast-body .btn-close {
    margin-left: var(--spacing-sm);
}

/* Additional Styles to Match ZDF.de */
a {
    color: var(--secondary-color);
    text-decoration: none;
}

a:hover {
    color: var(--primary-color);
}

/* Buttons */
button, .btn {
    font-family: var(--font-family);
}

.me-3 {
    margin-right: 0.5rem!important;
}