/**
 * EVE Official Website - Main Stylesheet
 * 
 * A clean, minimal design inspired by the EVE official website.
 * Features responsive design, smooth animations, and modern UI elements.
 * 
 * Table of Contents:
 * 1. CSS Reset & Variables
 * 2. Base Typography & Layout
 * 3. Header & Navigation
 * 4. Main Content Areas
 * 5. Announcements & Content Cards
 * 6. Discography & Album Pages
 * 7. Detail Pages (Events, News, Releases)
 * 8. Dynamic Controls (Filters, Search)
 * 9. Interactive Elements & Animations
 * 10. Footer
 * 11. Responsive Design
 * 
 * @author EVE Official Website Team
 * @version 1.0.0
 */

/* ========================================
   1. CSS RESET & VARIABLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000;
    --text-gray: #666;
    --text-light: #999;
    --border-color: #e5e5e5;
    --bg-gray: #f5f5f5;
    --white: #fff;
    --max-width: 1200px;
    --spacing-unit: 8px;
}

/* ========================================
   2. BASE TYPOGRAPHY & LAYOUT
   ======================================== */

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    font-size: 14px;
    line-height: 1.7;
    color: var(--primary-color);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   3. HEADER & NAVIGATION
   ======================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: calc(var(--spacing-unit) * 4);
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-gray);
    font-size: 13px;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -25px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
}

/* Main Content */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 100px calc(var(--spacing-unit) * 3) 60px;
    min-height: calc(100vh - 300px);
}

.content-header {
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.page-title {
    font-size: 32px;
    font-weight: normal;
    letter-spacing: 0.1em;
}

/* Announcements List */
.announcements-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.announcement-item {
    padding: calc(var(--spacing-unit) * 3) 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
    align-items: flex-start;
    transition: opacity 0.3s ease;
}

.announcement-item:hover {
    opacity: 0.7;
}

.announcement-date {
    min-width: 100px;
    color: var(--text-gray);
    font-size: 13px;
    padding-top: 3px;
}

.announcement-content {
    flex: 1;
}

.category-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.05em;
    margin-bottom: calc(var(--spacing-unit) * 1);
    padding: 2px 8px;
    border: 1px solid var(--border-color);
}

.category-tag.release {
    color: #e74c3c;
    border-color: #e74c3c;
}

.category-tag.event {
    color: #3498db;
    border-color: #3498db;
}

.category-tag.news {
    color: #2ecc71;
    border-color: #2ecc71;
}

.category-tag.store {
    color: #f39c12;
    border-color: #f39c12;
}

.category-tag.movie {
    color: #9b59b6;
    border-color: #9b59b6;
}

.announcement-title {
    font-size: 18px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    line-height: 1.4;
}

.announcement-title a {
    color: var(--primary-color);
    text-decoration: none;
}

.announcement-title a:hover {
    text-decoration: underline;
}

.announcement-excerpt {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
}

/* Load More */
.load-more {
    text-align: center;
    margin-top: calc(var(--spacing-unit) * 8);
}

.load-more-btn {
    background: none;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 12px 40px;
    font-size: 12px;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Footer */
.site-footer {
    background-color: var(--bg-gray);
    padding: calc(var(--spacing-unit) * 6) 0;
    margin-top: calc(var(--spacing-unit) * 10);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

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

.footer-social {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 3);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-social a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 12px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 3);
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 calc(var(--spacing-unit) * 2);
        height: 60px;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: calc(var(--spacing-unit) * 3);
        gap: calc(var(--spacing-unit) * 2);
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-menu a.active::after {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .main-content {
        padding: 80px calc(var(--spacing-unit) * 2) 40px;
    }

    .page-title {
        font-size: 24px;
    }

    .announcement-item {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1.5);
    }

    .announcement-date {
        min-width: auto;
    }

    .announcement-title {
        font-size: 16px;
    }

    .footer-nav,
    .footer-social {
        flex-wrap: wrap;
        gap: calc(var(--spacing-unit) * 2);
    }
}

@media (max-width: 480px) {
    .logo a {
        font-size: 20px;
    }

    .announcement-excerpt {
        font-size: 13px;
    }

    .load-more-btn {
        padding: 10px 30px;
        font-size: 11px;
    }
}

/* Section Divider */
.section-divider {
    margin: calc(var(--spacing-unit) * 8) 0 calc(var(--spacing-unit) * 4) 0;
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 2px solid var(--border-color);
}

.section-divider h2 {
    font-size: 20px;
    font-weight: normal;
    letter-spacing: 0.1em;
    color: var(--text-gray);
}

/* Past Events */
.past-event {
    opacity: 0.7;
}

/* Discography Styles */
.discography-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.album-item {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.album-cover {
    aspect-ratio: 1;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.placeholder-cover {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 0.05em;
    color: var(--text-light);
    text-align: center;
    padding: calc(var(--spacing-unit) * 2);
}

.album-info {
    flex: 1;
}

.release-type {
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--text-gray);
    display: block;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.album-title {
    font-size: 18px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

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

.album-title a:hover {
    color: var(--text-gray);
}

.release-date {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.tracklist {
    margin-top: calc(var(--spacing-unit) * 2);
}

.tracklist h4 {
    font-size: 13px;
    font-weight: normal;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.tracklist ol {
    list-style: none;
    counter-reset: track-counter;
}

.tracklist li {
    counter-increment: track-counter;
    font-size: 13px;
    line-height: 1.8;
    color: var(--text-gray);
    position: relative;
    padding-left: calc(var(--spacing-unit) * 3);
}

.tracklist li::before {
    content: counter(track-counter, decimal-leading-zero) ".";
    position: absolute;
    left: 0;
    font-size: 12px;
}

/* About Page Styles */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.artist-profile {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 10);
}

.profile-image {
    aspect-ratio: 1;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    font-size: 48px;
    font-weight: bold;
    letter-spacing: 0.05em;
    color: var(--text-light);
}

.artist-name {
    font-size: 36px;
    font-weight: normal;
    letter-spacing: 0.05em;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.artist-title {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.bio-section p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.section-title {
    font-size: 20px;
    font-weight: normal;
    letter-spacing: 0.1em;
    margin-bottom: calc(var(--spacing-unit) * 4);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--border-color);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: calc(var(--spacing-unit) * 8);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.timeline::before {
    content: '';
    position: absolute;
    left: calc(var(--spacing-unit) * 3);
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.timeline-year {
    position: absolute;
    left: calc(var(--spacing-unit) * -8);
    font-size: 14px;
    font-weight: bold;
    color: var(--primary-color);
}

.timeline-content h4 {
    font-size: 16px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-gray);
}

/* Achievements */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.achievement-item {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4);
    border: 1px solid var(--border-color);
}

.achievement-number {
    font-size: 36px;
    font-weight: bold;
    letter-spacing: -0.02em;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.achievement-label {
    font-size: 13px;
    color: var(--text-gray);
    letter-spacing: 0.05em;
}

/* Responsive Updates */
@media (max-width: 768px) {
    .discography-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
    }

    .artist-profile {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
    }

    .profile-image {
        max-width: 300px;
        margin: 0 auto;
    }

    .timeline {
        padding-left: calc(var(--spacing-unit) * 4);
    }

    .timeline-year {
        left: calc(var(--spacing-unit) * -4);
        font-size: 12px;
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: calc(var(--spacing-unit) * 2);
    }

    .achievement-item {
        padding: calc(var(--spacing-unit) * 3);
    }

    .achievement-number {
        font-size: 28px;
    }
}

/* Breadcrumb Navigation */
.breadcrumb {
    margin-bottom: calc(var(--spacing-unit) * 4);
    font-size: 13px;
    color: var(--text-gray);
}

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

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

.breadcrumb-separator {
    margin: 0 calc(var(--spacing-unit) * 1);
}

.breadcrumb-current {
    color: var(--primary-color);
}

/* Detail Page Layout */
.detail-page {
    max-width: 1000px;
    margin: 0 auto;
}

.detail-header {
    margin-bottom: calc(var(--spacing-unit) * 6);
    text-align: center;
}

.detail-title {
    font-size: 36px;
    font-weight: normal;
    letter-spacing: 0.05em;
    margin: calc(var(--spacing-unit) * 2) 0 calc(var(--spacing-unit) * 1) 0;
    line-height: 1.2;
}

.detail-date {
    font-size: 16px;
    color: var(--text-gray);
}

.detail-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.detail-main {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 6);
}

.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 4);
}

/* Event Detail Styles */
.event-image,
.article-image {
    aspect-ratio: 16/9;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.placeholder-image {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-light);
    text-align: center;
}

.event-description,
.article-body {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-gray);
}

.event-description p,
.article-body p {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.tour-dates h3,
.setlist-preview h3,
.festival-lineup h3 {
    font-size: 20px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--border-color);
}

.dates-list {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.date-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--spacing-unit) * 2);
    border: 1px solid var(--border-color);
}

.date-info {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 0.5);
}

.date-info .date {
    font-weight: bold;
    font-size: 14px;
}

.date-info .venue {
    font-size: 16px;
}

.date-info .city {
    font-size: 13px;
    color: var(--text-gray);
}

.ticket-status {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    font-size: 11px;
    font-weight: bold;
    letter-spacing: 0.05em;
}

.ticket-status.sold-out {
    background-color: #e74c3c;
    color: white;
}

.ticket-status.available {
    background-color: #2ecc71;
    color: white;
}

.ticket-status.presale {
    background-color: #f39c12;
    color: white;
}

.setlist {
    list-style: none;
}

.setlist li {
    padding: calc(var(--spacing-unit) * 1.5) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.lineup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.lineup-tier h4 {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--primary-color);
}

.lineup-tier ul {
    list-style: none;
}

.lineup-tier li {
    padding: calc(var(--spacing-unit) * 1) 0;
    font-size: 14px;
    color: var(--text-gray);
}

/* Sidebar Boxes */
.event-info-box,
.ticket-info-box,
.article-info-box,
.release-info-box,
.streaming-box,
.purchase-box,
.album-stats,
.single-stats,
.share-box,
.newsletter-signup {
    padding: calc(var(--spacing-unit) * 3);
    border: 1px solid var(--border-color);
    background-color: var(--bg-gray);
}

.event-info-box h4,
.ticket-info-box h4,
.article-info-box h4,
.release-info-box h4,
.streaming-box h4,
.purchase-box h4,
.album-stats h4,
.single-stats h4,
.share-box h4,
.newsletter-signup h4 {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: calc(var(--spacing-unit) * 3);
    letter-spacing: 0.05em;
}

.info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: 13px;
}

.info-item .label {
    color: var(--text-gray);
}

.info-item .value {
    font-weight: bold;
    text-align: right;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.btn-primary,
.btn-secondary {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    font-size: 13px;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-color);
}

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

.btn-primary:hover {
    background-color: var(--text-gray);
}

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

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

.stream-buttons,
.share-buttons {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 1.5);
}

.stream-btn,
.share-btn {
    padding: calc(var(--spacing-unit) * 1.5);
    font-size: 12px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.stream-btn:hover,
.share-btn:hover {
    opacity: 0.8;
}

/* Article Page Specific */
.article-page .detail-content {
    grid-template-columns: 2fr 1fr;
}

.article-meta {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
    font-size: 13px;
    color: var(--text-gray);
}

.read-time::before {
    content: "•";
    margin-right: calc(var(--spacing-unit) * 1);
}

.article-lead {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.6;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.article-quote {
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 3);
    border-left: 3px solid var(--primary-color);
    background-color: var(--bg-gray);
    font-style: italic;
    font-size: 16px;
    line-height: 1.6;
}

.article-quote cite {
    display: block;
    margin-top: calc(var(--spacing-unit) * 2);
    font-style: normal;
    font-size: 13px;
    color: var(--text-gray);
}

.article-body h3 {
    font-size: 20px;
    font-weight: normal;
    margin: calc(var(--spacing-unit) * 4) 0 calc(var(--spacing-unit) * 2) 0;
    color: var(--primary-color);
}

.image-caption {
    font-size: 12px;
    color: var(--text-light);
    margin-top: calc(var(--spacing-unit) * 1);
    text-align: center;
}

.related-articles {
    margin-top: calc(var(--spacing-unit) * 6);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--border-color);
}

.related-articles h4 {
    font-size: 16px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.related-articles ul {
    list-style: none;
}

.related-articles li {
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.related-articles a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
}

.related-articles a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.newsletter-form input {
    padding: calc(var(--spacing-unit) * 2);
    border: 1px solid var(--border-color);
    font-size: 13px;
}

.newsletter-form button {
    padding: calc(var(--spacing-unit) * 2);
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    font-size: 12px;
    cursor: pointer;
}

/* Release Page Specific */
.release-artwork {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
}

.album-cover-large {
    aspect-ratio: 1;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 400px;
}

.artwork-info {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

.album-description-lead {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.6;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.full-tracklist h3,
.single-tracklist h3,
.music-video-section h3,
.credits-section h3 {
    font-size: 20px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--border-color);
}

.tracklist-detailed {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
}

.track-item {
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
    padding: calc(var(--spacing-unit) * 2);
    border: 1px solid var(--border-color);
}

.track-number {
    font-size: 14px;
    font-weight: bold;
    color: var(--text-gray);
    min-width: 30px;
}

.track-info {
    flex: 1;
}

.track-title {
    font-size: 16px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.track-description {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.track-meta {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    font-size: 12px;
    color: var(--text-light);
}

.purchase-options {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.purchase-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-size: 13px;
}

.stat-item {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.stat-number {
    display: block;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 12px;
    color: var(--text-gray);
}

.video-placeholder {
    aspect-ratio: 16/9;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
    cursor: pointer;
}

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

.play-button {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.video-description {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.credit-category h4 {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--primary-color);
}

.credit-category ul {
    list-style: none;
}

.credit-category li {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.related-releases {
    margin-top: calc(var(--spacing-unit) * 2);
}

.related-items {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 2);
}

.related-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    text-decoration: none;
    color: var(--text-gray);
    transition: color 0.3s ease;
}

.related-item:hover {
    color: var(--primary-color);
}

.related-cover {
    width: 50px;
    height: 50px;
    background-color: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    color: var(--text-light);
}

.related-title {
    font-size: 12px;
}

/* Back Navigation */
.back-navigation {
    margin-top: calc(var(--spacing-unit) * 8);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--border-color);
}

.back-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--primary-color);
}

/* Responsive Design for Detail Pages */
@media (max-width: 768px) {
    .detail-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 4);
    }

    .detail-title {
        font-size: 28px;
    }

    .detail-main {
        gap: calc(var(--spacing-unit) * 4);
    }

    .detail-sidebar {
        gap: calc(var(--spacing-unit) * 3);
    }

    .date-item {
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--spacing-unit) * 2);
    }

    .lineup-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }

    .album-cover-large {
        max-width: 100%;
    }

    .track-item {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 2);
    }

    .track-meta {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1);
    }

    .credits-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }
}

/* Dynamic Content Controls */
.content-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: calc(var(--spacing-unit) * 4) 0;
    padding: calc(var(--spacing-unit) * 3) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.filter-controls {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
}

.filter-btn {
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    font-size: 12px;
    letter-spacing: 0.05em;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
}

.sort-label {
    font-size: 12px;
    color: var(--text-gray);
    letter-spacing: 0.05em;
}

.sort-btn {
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1.5);
    font-size: 11px;
    background: none;
    border: none;
    color: var(--text-gray);
    cursor: pointer;
    transition: color 0.3s ease;
    text-decoration: underline;
}

.sort-btn:hover,
.sort-btn.active {
    color: var(--primary-color);
}

/* Search Container */
.search-container {
    position: relative;
    margin: calc(var(--spacing-unit) * 3) 0;
    max-width: 400px;
}

.search-input {
    width: 100%;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 5) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
    border: 1px solid var(--border-color);
    background-color: var(--bg-gray);
    font-size: 14px;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--white);
}

.search-icon {
    position: absolute;
    right: calc(var(--spacing-unit) * 2);
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    color: var(--text-gray);
    pointer-events: none;
}

/* Enhanced Hover Effects */
.announcement-item,
.album-item,
.event-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.announcement-item:hover,
.album-item:hover,
.event-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--secondary-color);
}

.announcement-title a,
.album-title a {
    transition: color 0.3s ease;
}

.announcement-item:hover .announcement-title a,
.album-item:hover .album-title a {
    color: var(--primary-color);
}

/* Mobile Menu Enhancements */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 4px;
    transition: all 0.3s ease;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--primary-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Scroll Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.announcement-item,
.album-item,
.timeline-item {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.announcement-item.animate-in,
.album-item.animate-in,
.timeline-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Social Media Links */
.footer-social a {
    position: relative;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    transform: translateY(-2px);
}

.footer-social a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.footer-social a:hover::after {
    width: 100%;
}

/* Loading States */
.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.newsletter-form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Filter and Search States */
.filtered-out,
.search-hidden {
    display: none !important;
}

/* Button Animations */
.btn-primary,
.btn-secondary,
.filter-btn,
.sort-btn,
.stream-btn,
.share-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover,
.stream-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Category Tag Animations */
.category-tag {
    transition: all 0.3s ease;
}

.announcement-item:hover .category-tag {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Latest Updates Section */
.latest-updates {
    background-color: var(--bg-gray);
    padding: calc(var(--spacing-unit) * 6) 0;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.latest-updates .section-title {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 4);
    font-size: 24px;
}

.updates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

.update-card {
    background-color: var(--white);
    padding: calc(var(--spacing-unit) * 3);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.update-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.update-card .category-tag {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.update-card h3 {
    font-size: 16px;
    font-weight: normal;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.update-card h3 a {
    color: var(--primary-color);
    text-decoration: none;
}

.update-card .update-date {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.update-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .content-controls {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 3);
        align-items: stretch;
    }

    .filter-controls {
        flex-wrap: wrap;
        justify-content: center;
    }

    .sort-controls {
        justify-content: center;
    }

    .search-container {
        max-width: 100%;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .updates-grid {
        grid-template-columns: 1fr;
        padding: 0 calc(var(--spacing-unit) * 2);
    }
}

@media (max-width: 480px) {
    .filter-btn {
        font-size: 11px;
        padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 1.5);
    }

    .search-input {
        font-size: 13px;
    }
}

/* Performance Optimizations */
* {
    will-change: auto;
}

.announcement-item:hover,
.album-item:hover,
.event-card:hover {
    will-change: transform, box-shadow;
}

/* Accessibility Improvements */
.filter-btn:focus,
.sort-btn:focus,
.search-input:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.nav-toggle:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}