/* CSS cơ bản & Theme */
:root {
    --bg-color: #111827; /* gray-900 */
    --text-color: #e5e7eb; /* gray-200 */
    --text-color-light: #9ca3af; /* gray-400 */
    --text-color-darker: #6b7280; /* gray-500 */
    --primary-color: #ec4899; /* pink-500 */
    --primary-color-darker: #db2777; /* pink-600 */
    --secondary-color: #a855f7; /* purple-500 */
    --gradient-start: var(--primary-color);
    --gradient-end: var(--secondary-color);
    --border-color: #374151; /* gray-700 */
    --border-color-light: #4b5563; /* gray-600 */
    --card-bg: #1f2937; /* gray-800 */
    --card-bg-hover: #374151; /* gray-700 */
    --header-height: 64px; /* Tăng chiều cao header */
    --modal-bg: #111827e6; /* gray-900 with opacity for backdrop */
    --scrollbar-thumb: rgba(255, 255, 255, 0.3);
    --scrollbar-track: rgba(255, 255, 255, 0.1);
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.dark-theme {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

.container {
    max-width: 1030px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    background: none;
    border: none;
    color: inherit;
}

/* Utility Classes */
.desktop-only {
    display: block;
}
.mobile-only {
    display: none;
}

.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 9999px; /* Pill shape */
    font-size: 0.875rem; /* text-sm */
    font-weight: 500;
    transition: background-color 0.3s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-color-darker);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color-light);
    border-color: var(--border-color-light);
}

.btn-secondary:hover {
    background-color: var(--card-bg);
    color: white;
}

/* Header */
.site-header {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    /* height is now auto based on content */
}

/* Header Top Bar */
.header-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height); /* Use variable for top bar height */
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-size: 1.25rem; /* text-xl */
    font-weight: bold;
}
.logo-link:hover {
    color: white;
}

.logo-icon {
    display: inline-block;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
}

/* Adjust desktop search bar to fit in top bar */
.header-top-bar .search-bar {
     flex-grow: 1; /* Allow search to take space */
     margin: 0 20px; /* Space around search bar */
     max-width: 500px; /* Limit max width */
}

.search-bar input {
     /* width is now flexible */
     flex-grow: 1;
}

.mobile-header-icons {
    display: flex;
    gap: 5px;
}

/* Desktop Header Actions in Top Bar */
.header-top-bar .header-actions {
     /* Styles kept, just ensure placement */
}
.action-icons {
    display: flex;
    gap: 5px;
}
.header-icon-btn {
    background: none;
    border: none;
    color: var(--text-color-light);
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.3s, color 0.3s;
}
.header-icon-btn:hover {
    background-color: var(--card-bg);
    color: white;
}
.auth-buttons { display: flex; gap: 10px; }

/* Header Main Nav Bar */
.header-main-nav {
    background-color: var(--bg-color); /* Might be slightly different if needed */
    border-top: 1px solid var(--border-color);
    height: 48px; /* Adjust height for nav bar */
}

.header-main-nav .container {
    height: 100%;
}

.header-main-nav .main-nav {
     height: 100%;
}

.main-nav ul {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 30px; /* Increased gap for main nav */
}

.main-nav ul li a,
.main-nav ul li .nav-button {
    padding: 0; /* Remove vertical padding, controlled by nav bar height */
    height: 100%;
    display: flex;
    align-items: center;
    position: relative; /* For active indicator */
}

/* Add active indicator */
.main-nav ul li a.active::after,
.main-nav ul li .nav-button.open::after { /* Also show indicator when modal is open */
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

/* Genre Modal */
.genre-menu-item { position: relative; }

.genre-modal {
    display: none; /* Hidden by default */
    position: fixed; /* Cover viewport */
    inset: 0;
    z-index: 1100;
    justify-content: center;
    align-items: flex-start; /* Align to top */
    padding-top: 10vh; /* Khoảng cách từ top */
    animation: fadeIn 0.3s ease-out forwards;
}
.genre-modal.open {
    display: flex;
}

.genre-modal-overlay {
    position: absolute;
    inset: 0;
    background-color: var(--modal-bg);
    backdrop-filter: blur(4px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}
@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
@keyframes slideUp {
     from { transform: translateY(0); opacity: 1; }
     to { transform: translateY(-20px); opacity: 0; }
}

.genre-modal-content {
    position: relative;
    background-color: var(--bg-color);
    border-radius: 12px;
    box-shadow: 0 0 25px rgba(236, 72, 153, 0.3);
    border: 1px solid var(--border-color-light);
    width: 600px;
    max-width: 90vw;
    max-height: 70vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideDown 0.4s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

.modal-header-gradient {
    height: 4px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
}

.modal-title {
    font-size: 1.5rem; /* text-2xl */
    font-weight: bold;
    text-align: center;
    padding: 20px;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    background-image: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
}

.genre-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 0 24px 24px 24px;
    overflow-y: auto;
}

.genre-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    background-color: #ffffff0d; /* Slightly transparent white */
    border-radius: 8px;
    color: var(--text-color-light);
    font-size: 0.9rem;
    transition: all 0.2s ease-in-out;
}

.genre-link:hover {
    background-color: #ffffff1a;
    color: white;
    transform: scale(1.03);
    box-shadow: 0 0 15px rgba(236, 72, 153, 0.2);
}

.genre-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(to bottom right, var(--gradient-start), var(--gradient-end));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.2s ease-in-out;
}
.genre-link:hover .genre-icon {
    transform: scale(1.1);
}
.genre-icon i {
    color: white;
    font-size: 0.8em;
}

.close-modal-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-color-light);
    font-size: 1.2rem;
    padding: 5px;
    line-height: 1;
}
.close-modal-btn:hover { color: white; }

/* Mobile Header & Nav */
.mobile-nav {
    display: none; /* Hidden by default */
    position: fixed;
    inset: 0;
    background-color: var(--bg-color);
    z-index: 1200;
    flex-direction: column;
    padding: 20px;
    animation: slideInLeft 0.3s ease-out forwards;
}
.mobile-nav.open {
    display: flex;
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}
@keyframes slideOutLeft {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.close-mobile-menu-btn {
    font-size: 1.2rem; /* Match other icon buttons */
}

.mobile-search-bar {
    display: flex;
    margin-bottom: 20px;
}
.mobile-search-bar input {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    border-radius: 20px 0 0 20px;
    font-size: 1rem;
    outline: none;
}
.mobile-search-bar button {
     padding: 0 15px;
     border: 1px solid var(--border-color);
     border-left: none;
     background-color: var(--card-bg);
     color: var(--text-color-light);
     border-radius: 0 20px 20px 0;
     font-size: 1rem;
}

.mobile-nav ul {
    flex-grow: 1;
    overflow-y: auto;
}

.mobile-nav ul li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 1.1rem;
    color: var(--text-color-light);
    border-bottom: 1px solid var(--border-color);
}
.mobile-nav ul li a:hover {
    color: white;
}
.mobile-nav ul li:last-child a {
    border-bottom: none;
}

.mobile-auth-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}
.mobile-auth-buttons .btn {
    flex: 1;
    text-align: center;
    padding: 10px;
}

/* Main Content */
.site-main {
    padding: 30px 0;
}

.comics-section {
    margin-bottom: 40px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
    padding-left: 10px;
    color: white; /* Make title white */
}

/* Comic Carousel - Enhanced Styling */
.comic-carousel {
    position: relative;
    /* overflow: hidden; */ /* Allow seeing adjacent slides */
    border-radius: 8px;
    margin-bottom: 30px; /* Increased margin */
    padding: 20px 0; /* Add vertical padding */
}

.carousel-wrapper {
    overflow: hidden;
}

.carousel-slider {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1); /* Smoother transition */
}

.carousel-slide {
    flex: 0 0 80%; /* Make slides less than 100% width */
    margin: 0 2%; /* Add space between slides */
    position: relative;
    opacity: 0.5; /* Non-active slides more faded */
    transform: scale(0.9); /* Non-active slides smaller */
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
    border-radius: 8px;
    overflow: hidden; /* Clip image corners */
    box-shadow: 0 5px 15px rgba(0,0,0,0.2); /* Add shadow */
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3); /* Larger shadow for active */
}

/* Center the active slide (requires calculating offset in JS potentially, 
   or using libraries. Simple translateX centers the container) */
/* For pure CSS centering, often requires negative margins based on slide width, 
   which is complex if width is percentage-based. Keeping translateX for now. */

.carousel-slide img {
    width: 100%;
    aspect-ratio: 16 / 8; /* Adjust ratio slightly */
    object-fit: cover;
    /* Removed border-radius here, applied to .carousel-slide */
}

.slide-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 10%, rgba(0,0,0,0.7) 50%, transparent);
    padding: 50px 25px 25px 25px; /* More padding */
    color: white;
    opacity: 0; /* Hide by default */
    transform: translateY(10px); /* Start slightly lower */
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.carousel-slide.active .slide-info {
    opacity: 1;
    transform: translateY(0);
}

.slide-info h3 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 8px;
}

.slide-info p {
    font-size: 0.9rem;
    color: var(--text-color-light);
    margin-bottom: 10px;
    /* Limit description lines */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.label {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: bold;
    color: white;
    border-radius: 4px;
    text-transform: uppercase;
}

.label-hot {
    background: linear-gradient(45deg, #ff0000, #ff6b6b);
}

.label-new {
    background: linear-gradient(45deg, #00c6ff, #0072ff);
}

.carousel-control {
    /* Slightly adjusted appearance */
    width: 45px;
    height: 45px;
    font-size: 1.4rem;
    background-color: rgba(0, 0, 0, 0.4);
}
.carousel-control:hover {
    background-color: rgba(0, 0, 0, 0.7);
}
.carousel-control.prev {
    left: 5px; /* Closer to edge */
}
.carousel-control.next {
    right: 5px; /* Closer to edge */
}

.carousel-indicators {
    bottom: 15px; /* Slightly higher */
}
.carousel-indicators button {
     width: 8px;
     height: 8px;
     background-color: rgba(255, 255, 255, 0.4);
}
.carousel-indicators button.active {
     background-color: white;
     transform: scale(1.2);
}

/* Comic Grid & Card */
.comic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
}

.comic-card {
    background-color: transparent; /* Remove card bg */
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.comic-card:hover {
    transform: translateY(-5px);
}

.comic-cover {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 6px; /* Rounded cover */
    margin-bottom: 8px;
}

.comic-cover img {
    width: 100%;
    aspect-ratio: 2 / 3; /* More common comic ratio */
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

/* Add a subtle overlay on hover */
.comic-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.comic-card:hover .comic-cover::after {
    opacity: 1;
}

.comic-title {
    font-size: 0.9rem;
    font-weight: 600; /* Slightly bolder */
    padding: 0; /* Remove padding */
    margin: 0 0 4px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 2.8em;
    line-height: 1.4em;
}

.comic-title a {
    color: var(--text-color);
}

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

.comic-chapter {
    display: block;
    font-size: 0.8rem;
    color: var(--text-color-light);
    padding: 0; /* Remove padding */
}

/* Footer */
.site-footer {
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px 0;
    color: var(--text-color-light);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-title {
    font-size: 1rem;
    font-weight: bold;
    color: white;
    margin-bottom: 15px;
}

.footer-column ul li {
    margin-bottom: 8px;
}

.footer-column a {
    color: var(--text-color-light);
    font-size: 0.9rem;
}

.footer-column a:hover {
    color: white;
}

.footer-column p {
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex; /* Align icons */
    align-items: flex-start;
    gap: 6px;
}

.footer-column .icon {
    margin-top: 3px; /* Adjust icon position */
    flex-shrink: 0;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-icons a {
    color: var(--text-color-light);
    font-size: 1.1rem;
}
.social-icons a:hover {
    color: white;
}

.copyright {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-color-darker);
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 20px;
}

.copyright .disclaimer {
    margin-top: 5px;
    font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 1024px) { /* Adjust breakpoint for hiding desktop nav */
    .header-main-nav {
        display: none;
    }
}

@media (max-width: 768px) {
    .desktop-only { display: none !important; } /* Use !important to override */
    .mobile-only { display: flex !important; } /* Use !important to override. Use flex for icons container */

    .header-top-bar .search-bar {
        display: none; /* Hide desktop search in top bar on mobile */
    }
    .mobile-header-icons {
        display: flex; /* Ensure mobile icons container is flex */
    }

    /* Keep existing mobile styles */
    .mobile-menu-toggle, .mobile-search-toggle {
        display: block;
    }

    /* Carousel on Mobile */
    .carousel-slide {
        flex: 0 0 90%; /* Slightly wider on mobile */
        margin: 0 1%;
    }
     .slide-info h3 {
        font-size: 1.3rem;
    }
     .slide-info p {
        font-size: 0.85rem;
        -webkit-line-clamp: 1; /* Limit to 1 line on mobile */
     }
     .carousel-control {
         width: 35px;
         height: 35px;
         font-size: 1rem;
     }

    /* Other existing mobile styles */
    .site-main {
        padding: 20px 0;
    }
    .section-title {
        font-size: 1.3rem;
        margin-bottom: 15px;
    }
    .comic-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }
     .footer-container {
         grid-template-columns: 1fr; /* Stack columns */
         gap: 25px;
    }

    /* Genre Modal */
    .genre-modal-content {
        width: 90vw;
        max-height: 80vh;
    }
    .genre-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columns on mobile */
    }
}

/* Hide initial placeholder styles */
.comic-card-placeholder {
    display: none;
}
.placeholder-text {
    display: none;
}

/* Prevent scrollbar jump */
body.modal-open {
    overflow: hidden;
    /* padding-right: 15px; */ /* Commented out - might not be needed/ideal */
}