/* Fullscreen 100vh Hero Screen (Hope:Re Minimal Organic Aesthetic) */
.hero-screen {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 90px 40px 60px;
    overflow: hidden;
    z-index: 2;
}

/* Organic Contour Map Vector Effect Backdrop */
.hero-organic-contour {
    position: absolute;
    inset: -10%;
    background-image: radial-gradient(circle at 75% 50%, rgba(214, 172, 104, 0.06) 0%, transparent 60%),
                      radial-gradient(circle at 25% 60%, rgba(201, 154, 76, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Corner Frame Brackets ┌ ... ┘ */
.hero-bracket {
    position: absolute;
    width: 32px;
    height: 32px;
    pointer-events: none;
    z-index: 1;
}

.hero-bracket-top-left {
    top: 90px;
    left: 40px;
    border-top: 2px solid var(--border-glow);
    border-left: 2px solid var(--border-glow);
}

.hero-bracket-bottom-right {
    bottom: 40px;
    right: 40px;
    border-bottom: 2px solid var(--border-glow);
    border-right: 2px solid var(--border-glow);
}

/* Hero Screen Grid Container - Full Right Column Allocation */
.hero-screen-container {
    max-width: 1380px;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 30px;
    position: relative;
    z-index: 2;
}

.hero-left-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-live-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-cyan-light);
    border: 1px solid var(--accent-cyan);
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 24px;
}

.hero-main-heading {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
}

.title-brand {
    font-size: clamp(2.8rem, 6.5vw, 4.8rem);
    font-weight: 800;
    line-height: 1.05;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.title-sub-text {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-tagline {
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 540px;
    line-height: 1.7;
    margin-bottom: 36px;
}

.hero-btn-group {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary-action {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--primary);
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    border-radius: 99px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(214, 172, 104, 0.35);
    transition: all var(--transition-normal);
}

.btn-primary-action:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(214, 172, 104, 0.45);
}

.hero-server-ip-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 99px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.hero-server-ip-pill:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-cyan-light);
    color: var(--accent-cyan);
}

/* Right Column: Giant Transparent Fubuki PNG Character Stance */
.hero-right-content {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
}

.hero-character-wrapper {
    position: relative;
    width: 100%;
    height: 85vh;
    max-height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-fubuki-character {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center center;
    border: none;
    border-radius: 0;
    box-shadow: none;
    filter: drop-shadow(0 20px 45px rgba(0, 0, 0, 0.65)) drop-shadow(0 0 35px rgba(214, 172, 104, 0.3));
    position: relative;
    z-index: 2;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
    animation: characterFloat 5s ease-in-out infinite alternate;
}

@keyframes characterFloat {
    0% {
        transform: translateY(0px) scale(1);
    }
    100% {
        transform: translateY(-16px) scale(1.03);
    }
}

.hero-character-wrapper:hover .hero-fubuki-character {
    transform: scale(1.06) translateY(-20px);
    filter: drop-shadow(0 25px 55px rgba(0, 0, 0, 0.75)) drop-shadow(0 0 45px rgba(214, 172, 104, 0.45));
}

.character-aura-glow {
    position: absolute;
    right: 15%;
    top: 15%;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(142, 212, 232, 0.25) 0%, rgba(214, 172, 104, 0.15) 40%, transparent 70%);
    filter: blur(45px);
    z-index: 1;
    pointer-events: none;
}

/* Scroll Indicator Button */
.scroll-indicator {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-muted);
    transition: color var(--transition-fast);
    z-index: 10;
}

.scroll-indicator:hover {
    color: var(--primary);
}

.mouse-icon {
    width: 22px;
    height: 34px;
    border: 2px solid currentColor;
    border-radius: 12px;
    position: relative;
    display: flex;
    justify-content: center;
}

.wheel-dot {
    width: 4px;
    height: 8px;
    background-color: currentColor;
    border-radius: 2px;
    margin-top: 6px;
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

.scroll-text {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.2em;
}

/* Bottom Walking Fubuki GIF Mascot Container (Right to Left First) */
.bottom-walking-mascot {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 105px;
    z-index: 999;
    pointer-events: none;
    animation: walkRightToLeftFirst 26s linear infinite;
}

.mascot-embed-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
}

.mascot-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Continuous Back-and-Forth Motion: Right to Left FIRST, then flip and walk Left to Right */
@keyframes walkRightToLeftFirst {
    0% {
        transform: translateX(calc(100vw + 10px)) scaleX(1);
    }
    48% {
        transform: translateX(-100px) scaleX(1);
    }
    50% {
        transform: translateX(-100px) scaleX(-1);
    }
    98% {
        transform: translateX(calc(100vw + 10px)) scaleX(-1);
    }
    100% {
        transform: translateX(calc(100vw + 10px)) scaleX(1);
    }
}

/* Control Panel (Search & Category Chips) */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto 36px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    pointer-events: none;
    transition: color var(--transition-fast);
}

.search-box input {
    width: 100%;
    padding: 16px 48px 16px 54px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.search-box input:focus + .search-icon {
    color: var(--primary);
}

.clear-search {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.clear-search:hover {
    color: var(--accent-warm-rose);
}

/* Category Filters Bar */
.category-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-chip {
    padding: 10px 18px;
    border-radius: 99px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-normal);
    user-select: none;
}

.filter-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.filter-chip.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(214, 172, 104, 0.35);
}

/* Changelogs Feed Section & Typographic Divider */
.changelogs-container {
    position: relative;
}

.changelogs-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

/* ==========================================================================
   Bottom Infinite Water-Inertia Decorative Typographic Section Divider
   ========================================================================== */
.bottom-typographic-divider {
    position: relative;
    width: 100vw;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    padding: 38px 0;
    margin-top: 60px;
    margin-bottom: 30px;
    background: linear-gradient(180deg, rgba(14, 17, 22, 0.45) 0%, rgba(22, 27, 36, 0.85) 50%, rgba(14, 17, 22, 0.45) 100%);
    border-top: 1px solid rgba(214, 172, 104, 0.2);
    border-bottom: 1px solid rgba(214, 172, 104, 0.2);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow: hidden;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

:root:not(.dark) .bottom-typographic-divider {
    background: linear-gradient(180deg, rgba(245, 242, 235, 0.6) 0%, rgba(235, 230, 220, 0.9) 50%, rgba(245, 242, 235, 0.6) 100%);
    border-color: rgba(0, 0, 0, 0.08);
}

/* Side Edge Fade Gradients creating the infinite endless illusion */
.bottom-typographic-divider::before,
.bottom-typographic-divider::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 15vw;
    z-index: 5;
    pointer-events: none;
}

.bottom-typographic-divider::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-main) 0%, transparent 100%);
}

.bottom-typographic-divider::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-main) 0%, transparent 100%);
}

/* Corner Bracket Accents extending off-screen */
.infinite-divider-brackets {
    position: absolute;
    inset: 10px 24px;
    pointer-events: none;
    z-index: 4;
}

.infinite-divider-brackets::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 32px;
    height: 32px;
    border-top: 2px solid var(--primary);
    border-left: 2px solid var(--primary);
    box-shadow: -2px -2px 12px rgba(214, 172, 104, 0.35);
}

.infinite-divider-brackets::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    border-bottom: 2px solid var(--primary);
    border-right: 2px solid var(--primary);
    box-shadow: 2px 2px 12px rgba(214, 172, 104, 0.35);
}

/* Infinite Marquee Container & Tracks */
.infinite-marquee-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 100%;
    font-family: var(--font-mono);
    font-size: 0.92rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    overflow: hidden;
}

.marquee-track {
    display: flex;
    align-items: center;
    gap: 20px;
    white-space: nowrap;
    width: max-content;
    will-change: transform;
}

.track-left {
    animation: marqueeScrollLeft 38s linear infinite;
}

.track-right {
    animation: marqueeScrollRight 38s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

@keyframes marqueeScrollLeft {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes marqueeScrollRight {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* Water Inertia Floating Word Element */
.float-word {
    display: inline-block;
    will-change: transform;
    transition: transform 0.08s cubic-bezier(0.25, 1, 0.5, 1);
    transform-origin: center center;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.float-word:hover {
    color: var(--primary) !important;
    text-shadow: 0 0 15px var(--primary);
}

/* Highlighted Words */
.hl-orange {
    color: #e56b6f;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(229, 107, 111, 0.35);
}

.hl-yellow {
    color: #d6ac68;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(214, 172, 104, 0.35);
}

.hl-blue {
    color: #38bdf8;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(56, 189, 248, 0.35);
}

.hl-purple {
    color: #c084fc;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(192, 132, 252, 0.35);
}

.hl-green {
    color: #38a169;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(56, 161, 105, 0.35);
}

/* Compact Preview Changelog Card */
.changelog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-smooth), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.changelog-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.25);
}

/* Card Header */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.version-tag {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    padding: 5px 14px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-sand) 100%);
    color: #181716;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    box-shadow: 0 2px 10px rgba(214, 172, 104, 0.3);
}

.card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.release-date, .author-tag {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Category Badge Pills */
.category-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.badge {
    padding: 4px 12px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-feature {
    background: rgba(214, 172, 104, 0.15);
    color: #e2be7a;
    border: 1px solid rgba(214, 172, 104, 0.3);
}

.badge-fix {
    background: rgba(229, 107, 111, 0.15);
    color: #f28b82;
    border: 1px solid rgba(229, 107, 111, 0.3);
}

.badge-balance {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-performance {
    background: rgba(56, 161, 105, 0.15);
    color: #48bb78;
    border: 1px solid rgba(56, 161, 105, 0.3);
}

.badge-event {
    background: rgba(168, 85, 247, 0.15);
    color: #c084fc;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

/* Compact Card Summary */
.card-summary-preview {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.65;
    margin-bottom: 18px;
}

/* Card Footer Actions */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.btn-detail, .btn-share {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.btn-detail {
    background: var(--primary-light);
    border-color: rgba(214, 172, 104, 0.3);
    color: var(--primary);
}

.btn-detail:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-share:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.empty-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.reset-btn {
    margin-top: 20px;
    padding: 10px 24px;
    background: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: 99px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.reset-btn:hover {
    background: var(--primary-hover);
}

/* Smooth Ultra-Fluid Modal Backdrop & Card Popup Animations */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(12, 11, 10, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.36s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.36s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-main);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 820px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 42px;
    position: relative;
    box-shadow: 0 25px 60px -10px rgba(0, 0, 0, 0.65), 0 0 35px rgba(214, 172, 104, 0.25);
    
    /* Hide Scrollbar for clean aesthetics while keeping smooth scrolling */
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
    
    /* Smooth Scale & Slide Entrance */
    transform: scale(0.92) translateY(24px);
    opacity: 0;
    transition: transform 0.42s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.42s ease;
}

/* Hide Scrollbar for Chrome, Safari, and Opera */
.modal-card::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

.modal-overlay.active .modal-card {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.close-modal-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.close-modal-btn:hover {
    background: var(--accent-warm-rose);
    color: #ffffff;
    border-color: var(--accent-warm-rose);
    transform: rotate(90deg);
}

.hidden {
    display: none !important;
}

/* Responsive Adjustments */
@media (max-width: 900px) {
    .hero-screen-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .hero-left-content {
        align-items: center;
    }

    .hero-tagline {
        margin: 0 auto 28px;
    }

    .hero-character-wrapper {
        height: 55vh;
        max-height: 440px;
    }

    .hero-fubuki-character {
        object-position: center center;
    }

    .modal-card {
        padding: 28px;
    }
}

/* ==========================================================================
   View Mode Switcher (3D Carousel vs Standard Feed)
   ========================================================================== */
.view-mode-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    padding: 5px;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
}

.view-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.view-btn.active {
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(214, 172, 104, 0.15);
}

/* ==========================================================================
   GSAP ScrollTrigger 3D Cylinder Carousel Styling
   ========================================================================== */
.cylinder-viewport-wrapper {
    position: relative;
    width: 100%;
    min-height: 520px;
    padding: 30px 10px 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: visible;
    margin-bottom: 40px;
}

.cylinder-3d-hint {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 22px;
    background: rgba(214, 172, 104, 0.12);
    border: 1px dashed var(--primary);
    border-radius: 99px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 35px;
    text-transform: uppercase;
    animation: pulseGlow 2.5s infinite ease-in-out;
    z-index: 5;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 10px rgba(214, 172, 104, 0.15); }
    50% { box-shadow: 0 0 24px rgba(214, 172, 104, 0.45); }
}

.cylinder-viewport {
    width: 100%;
    height: 460px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    perspective: 1100px;
    perspective-origin: 50% 50%;
    overflow: visible;
}

.cylinder-stage {
    width: 320px;
    height: 420px;
    position: relative;
    transform-style: preserve-3d;
    transform-origin: 50% 50%;
}

/* 3D Card Element Styling */
.card-3d-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 320px;
    height: 420px;
    border-radius: var(--radius-xl);
    background: rgba(22, 26, 34, 0.94);
    border: 1px solid rgba(214, 172, 104, 0.3);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    backface-visibility: visible;
    transition: opacity 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    overflow: hidden;
    user-select: none;
}

:root:not(.dark) .card-3d-item {
    background: rgba(255, 252, 245, 0.95);
    border-color: rgba(201, 154, 76, 0.4);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.card-3d-item:hover {
    border-color: var(--primary);
    box-shadow: 0 20px 45px rgba(214, 172, 104, 0.35);
}

.card-3d-item.is-active-front {
    border: 2px solid #d6ac68 !important;
    box-shadow: 0 0 35px rgba(214, 172, 104, 0.5), 0 20px 50px rgba(0, 0, 0, 0.7) !important;
    opacity: 1 !important;
    z-index: 30;
}

.card-3d-inner {
    padding: 24px;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
}

.card-3d-header {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.card-3d-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-3d-meta {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.card-3d-summary {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 12px 0;
}

.card-3d-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: auto;
}

.btn-3d-detail {
    flex: 1;
    padding: 10px 14px;
    background: var(--primary-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.btn-3d-detail:hover {
    background: var(--primary);
    color: #0b0f14;
    box-shadow: 0 0 15px rgba(214, 172, 104, 0.4);
}

.btn-3d-share {
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-3d-share:hover {
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Mobile Responsive Adjustments for 3D Carousel */
@media (max-width: 768px) {
    .cylinder-stage {
        width: 280px;
        height: 400px;
    }

    .card-3d-item {
        width: 280px;
        height: 400px;
    }

    .view-mode-switcher {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   Intro Loading Screen
   ========================================================================== */
#intro-screen {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background-color: var(--bg-main);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.intro-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.intro-character {
    width: 280px;
    filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.4));
    animation: breathing 3s ease-in-out infinite alternate;
}

@keyframes breathing {
    0% { transform: scale(1) translateY(0); filter: brightness(0.95); }
    100% { transform: scale(1.03) translateY(-5px); filter: brightness(1.05); }
}

.intro-loading-text {
    font-family: var(--font-heading);
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.intro-progress-bar {
    width: 220px;
    height: 4px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.intro-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan-light);
    border-radius: 4px;
}

/* ==========================================================================
   Scroll-driven Marquee Divider
   ========================================================================== */
.scroll-marquee-container {
    width: 100%;
    overflow: hidden;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 22px 0;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 10;
    user-select: none;
}

.scroll-marquee-inner {
    display: flex;
    white-space: nowrap;
    will-change: transform;
}

.marquee-text-block {
    display: flex;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    text-transform: uppercase;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.15);
    letter-spacing: 0.08em;
}

:root:not(.dark) .marquee-text-block {
    -webkit-text-stroke: 1px rgba(0, 0, 0, 0.12);
}

.scroll-marquee-container .hl-cyan {
    color: var(--accent-cyan);
    -webkit-text-stroke: none;
    text-shadow: 0 0 15px rgba(142, 212, 232, 0.25);
}

.scroll-marquee-container .hl-gold {
    color: var(--primary);
    -webkit-text-stroke: none;
    text-shadow: 0 0 15px rgba(214, 172, 104, 0.2);
}

/* ==========================================================================
   Sneak Peeks Update Section (Alternating 2-Column Layout)
   ========================================================================== */
.sneakpeeks-container {
    margin-top: 100px;
    padding-top: 60px;
    border-top: 1px dashed var(--border-color);
}

.sneakpeeks-header {
    text-align: center;
    margin-bottom: 50px;
}

.sneakpeeks-main-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.sneakpeeks-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-top: 10px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.sneakpeeks-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.sneakpeek-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.sneakpeek-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-cyan-light);
    box-shadow: 0 12px 35px rgba(142, 212, 232, 0.08);
}

/* Alternating Layout: Even items have media on the right */
.sneakpeek-item:nth-child(even) {
    grid-template-columns: 1fr 1.2fr;
}

.sneakpeek-item:nth-child(even) .sneakpeek-media {
    order: 2;
}

.sneakpeek-media {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.sneakpeek-thumbnail-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    cursor: pointer;
    overflow: hidden;
}

.sneakpeek-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.sneakpeek-thumbnail-wrapper:hover .sneakpeek-thumbnail {
    transform: scale(1.03);
}

.sneakpeek-play-btn {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 58px; height: 58px;
    border-radius: 50%;
    background: var(--accent-cyan);
    color: var(--bg-main);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    box-shadow: 0 0 25px var(--accent-cyan-light);
    transition: transform var(--transition-normal), background var(--transition-normal), color var(--transition-normal), box-shadow var(--transition-normal);
    z-index: 2;
}

.sneakpeek-thumbnail-wrapper:hover .sneakpeek-play-btn {
    transform: translate(-50%, -50%) scale(1.12);
    background: var(--primary);
    color: var(--bg-main);
    box-shadow: 0 0 25px rgba(214, 172, 104, 0.5);
}

.sneakpeek-video-container {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 3;
}

.sneakpeek-video-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.sneakpeek-image-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.sneakpeek-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.sneakpeek-image-wrapper:hover .sneakpeek-image {
    transform: scale(1.03);
}

.sneakpeek-content {
    padding: 10px 0;
}

.sneakpeek-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sneakpeek-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 12px 0 10px;
    color: var(--text-primary);
    line-height: 1.4;
}

.sneakpeek-summary {
    font-size: 0.98rem;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-line;
}

/* Responsive design for Tablet/Mobile */
@media (max-width: 768px) {
    .sneakpeek-item, .sneakpeek-item:nth-child(even) {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 18px;
    }
    
    .sneakpeek-item:nth-child(even) .sneakpeek-media {
        order: 0;
    }
    
    .sneakpeeks-main-title {
        font-size: 1.8rem;
    }
}

/* ==========================================================================
   Vote Update Section (Coming Soon)
   ========================================================================== */
.vote-section {
    margin-top: 100px;
    padding: 60px 40px;
    background: radial-gradient(circle at top left, rgba(142, 212, 232, 0.05), transparent 60%), var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.vote-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(214, 172, 104, 0.08);
    color: var(--primary);
    border: 1px solid rgba(214, 172, 104, 0.15);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.vote-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.vote-description {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 580px;
    margin: 0 auto 30px;
    line-height: 1.6;
}

.vote-coming-soon {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
    background: rgba(142, 212, 232, 0.06);
    border: 1px dashed var(--accent-cyan-light);
    padding: 12px 30px;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    animation: pulseGlow 2s infinite alternate;
}

@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 10px rgba(142, 212, 232, 0.05);
        border-color: rgba(142, 212, 232, 0.2);
    }
    100% {
        box-shadow: 0 0 25px rgba(142, 212, 232, 0.25);
        border-color: rgba(142, 212, 232, 0.6);
    }
}

/* Mobile responsive adjustments for Vote Section */
@media (max-width: 768px) {
    .vote-section {
        padding: 40px 20px;
        margin-top: 80px;
    }
    .vote-title {
        font-size: 1.8rem;
    }
    .vote-description {
        font-size: 0.95rem;
    }
}

/* ==========================================================================
   Discord Authentication Styling (Navbar)
   ========================================================================== */
.discord-auth-container {
    display: flex;
    align-items: center;
    margin-right: 12px;
}

.discord-login-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #5865F2;
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-normal), transform var(--transition-normal);
}

.discord-login-btn:hover {
    background: #4752C4;
    transform: translateY(-1px);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-md);
}

.user-profile img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--accent-cyan);
}

.user-profile span {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logout-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 2px;
    display: flex;
    align-items: center;
    transition: color var(--transition-normal);
}

.logout-btn:hover {
    color: #F87171;
}

/* ==========================================================================
   Reactions Interface (Cards)
   ========================================================================== */
.card-reactions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.react-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    user-select: none;
}

.react-btn .emoji {
    font-size: 0.95rem;
}

.react-btn .count {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.react-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Active State for Reactions */
.react-btn.has-reacted {
    background: rgba(142, 212, 232, 0.08);
    border-color: var(--accent-cyan);
}

.react-btn.has-reacted .count {
    color: var(--accent-cyan);
}

/* Unauthenticated State: dim and prevent interactions */
.is-unauth .react-btn {
    opacity: 0.6;
}

/* ==========================================================================
   Toast Notification System
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.toast-message {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: rgba(28, 26, 24, 0.85);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glow), 0 10px 30px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.92rem;
    pointer-events: auto;
    
    /* Animation initial state */
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

:root:not(.dark) .toast-message {
    background: rgba(255, 253, 248, 0.9);
    border: 1px solid var(--primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.toast-message.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.toast-message.fade-out {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
}

.toast-icon {
    color: var(--primary);
    font-size: 1.1rem;
    animation: toastPulse 1.5s infinite;
}

@keyframes toastPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

/* ==========================================================================
   Discord Auth Modal Prompt
   ========================================================================== */
.auth-modal-card {
    max-width: 480px;
    padding: 48px 32px;
    text-align: center;
}

.auth-prompt-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.auth-prompt-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(88, 101, 242, 0.15);
    border: 1px solid rgba(88, 101, 242, 0.4);
    color: #5865F2;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    animation: authPulseIcon 2s infinite alternate;
}

@keyframes authPulseIcon {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(88, 101, 242, 0.2); }
    100% { transform: scale(1.05); box-shadow: 0 0 20px 4px rgba(88, 101, 242, 0.4); }
}

.auth-prompt-title {
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--text-primary);
}

.auth-prompt-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.auth-prompt-btn {
    width: 100%;
    justify-content: center;
    background: #5865F2;
    border-color: #5865F2;
    box-shadow: 0 4px 15px rgba(88, 101, 242, 0.35);
    margin-top: 10px;
}

.auth-prompt-btn:hover {
    background: #4752c4;
    box-shadow: 0 6px 20px rgba(88, 101, 242, 0.45);
}

/* ==========================================================================
   FLOATING MUSIC PLAYER WIDGET (UPGRADED VERTICAL NEON GLASSMORPHISM)
   ========================================================================== */
.music-player-widget {
    position: fixed;
    top: 100px;
    left: 24px;
    z-index: 99;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 16px;
    border-radius: var(--radius-xl);
    background: rgba(11, 11, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(142, 212, 232, 0.18);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 
                inset 0 0 25px rgba(142, 212, 232, 0.05);
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    width: 280px;
    max-height: 480px;
    overflow: hidden;
}

.music-player-widget.collapsed {
    width: 40px;
    height: 40px;
    max-width: 40px;
    padding: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    cursor: pointer;
    border-radius: 50%;
}

/* Biểu tượng đĩa nhạc xoay tròn */
.music-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    overflow: hidden;
    transition: transform var(--transition-fast) ease;
    align-self: flex-start;
}

.music-toggle-btn:hover {
    transform: scale(1.08);
}

.music-player-widget:not(.collapsed) .music-toggle-btn {
    align-self: center;
    width: 50px;
    height: 50px;
}

.music-player-widget:not(.collapsed) .music-disc {
    width: 50px;
    height: 50px;
}

.music-disc {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--cyan-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: rotateDisc 8s linear infinite;
    animation-play-state: paused;
    box-shadow: 0 0 10px rgba(142, 212, 232, 0.3);
    transition: all var(--transition-fast) ease;
    background: rgba(0,0,0,0.2);
}

.playing .music-disc {
    animation-play-state: running;
    box-shadow: 0 0 18px var(--cyan-primary);
}

.disc-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    image-rendering: auto;
}

@keyframes rotateDisc {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Sóng nhạc mini nhấp nhô */
.music-waves {
    position: absolute;
    bottom: 2px;
    display: flex;
    gap: 2.5px;
    height: 10px;
    align-items: flex-end;
}

.music-player-widget:not(.collapsed) .music-waves {
    display: none;
}

.wave-bar {
    width: 2px;
    height: 2px;
    background-color: var(--cyan-primary);
    border-radius: 1px;
    transition: height 0.2s ease;
}

.playing .wave-bar:nth-child(1) { animation: wavePulse 1.2s ease-in-out infinite alternate; }
.playing .wave-bar:nth-child(2) { animation: wavePulse 0.8s ease-in-out infinite alternate 0.2s; }
.playing .wave-bar:nth-child(3) { animation: wavePulse 1s ease-in-out infinite alternate 0.4s; }

@keyframes wavePulse {
    0% { height: 2px; }
    100% { height: 10px; }
}

/* Panel Chi Tiết */
.music-player-panel {
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease;
    opacity: 1;
    width: 100%;
}

.collapsed .music-player-panel {
    opacity: 0;
    pointer-events: none;
    height: 0;
    overflow: hidden;
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(142, 212, 232, 0.15);
    padding-bottom: 6px;
}

.player-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--cyan-primary);
    text-shadow: 0 0 5px rgba(142, 212, 232, 0.3);
}

.player-minimize-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px;
    transition: color 0.2s, transform 0.2s;
}

.player-minimize-btn:hover {
    color: var(--cyan-primary);
    transform: scale(1.1);
}

/* Thông tin bài hát kiểu Cyber */
.track-info {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 10px;
    border-radius: var(--radius-md);
    border-left: 2px solid var(--gold-primary);
}

.track-title {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-artist {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 2px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Nút điều khiển phong cách cao cấp */
.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 12px;
}

.ctrl-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctrl-btn:hover {
    color: var(--cyan-primary);
    transform: scale(1.15);
}

.play-main-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cyan-primary);
    color: #0b0b0f;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    box-shadow: 0 0 12px rgba(142, 212, 232, 0.4);
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.play-main-btn:hover {
    padding: 8px 12px;
    background: rgba(142, 212, 232, 0.05);
    border-bottom: 1px solid rgba(142, 212, 232, 0.12);
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.playlist-ul {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 140px;
    overflow-y: auto;
}

.playlist-ul::-webkit-scrollbar {
    width: 4px;
}
.playlist-ul::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}
.playlist-ul::-webkit-scrollbar-thumb {
    background: var(--cyan-primary);
    border-radius: 2px;
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    font-size: 0.74rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.playlist-item:last-child {
    border-bottom: none;
}

.playlist-item:hover {
    background: rgba(142, 212, 232, 0.05);
    color: var(--text-primary);
}

.playlist-item.active {
    background: rgba(142, 212, 232, 0.1);
    color: var(--cyan-primary);
    font-weight: 600;
    border-left: 3px solid var(--cyan-primary);
    display: none;
}

.wave-bar {
    width: 2px;
    height: 2px;
    background-color: var(--cyan-primary);
    border-radius: 1px;
    transition: height 0.2s ease;
}

.playing .wave-bar:nth-child(1) { animation: wavePulse 1.2s ease-in-out infinite alternate; }
.playing .wave-bar:nth-child(2) { animation: wavePulse 0.8s ease-in-out infinite alternate 0.2s; }
.playing .wave-bar:nth-child(3) { animation: wavePulse 1s ease-in-out infinite alternate 0.4s; }

@keyframes wavePulse {
    0% { height: 2px; }
    100% { height: 10px; }
}

/* Panel Chi Tiết */
.music-player-panel {
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease;
    opacity: 1;
    width: 100%;
}

.collapsed .music-player-panel {
    opacity: 0;
    pointer-events: none;
    height: 0;
    overflow: hidden;
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(142, 212, 232, 0.15);
    padding-bottom: 6px;
}

.player-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--cyan-primary);
    text-shadow: 0 0 5px rgba(142, 212, 232, 0.3);
}

.player-minimize-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px;
    transition: color 0.2s, transform 0.2s;
}

.player-minimize-btn:hover {
    color: var(--cyan-primary);
    transform: scale(1.1);
}

/* Thông tin bài hát kiểu Cyber */
.track-info {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 10px;
    border-radius: var(--radius-md);
    border-left: 2px solid var(--gold-primary);
}

.track-title {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-artist {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 2px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Nút điều khiển phong cách cao cấp */
.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 12px;
}

.ctrl-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctrl-btn:hover {
    color: var(--cyan-primary);
    transform: scale(1.15);
}

.play-main-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cyan-primary);
    color: #0b0b0f;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    box-shadow: 0 0 12px rgba(142, 212, 232, 0.4);
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.play-main-btn:hover {
    background: #a9e4f5;
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(142, 212, 232, 0.7);
}

.playing .play-main-btn {
    background: var(--gold-primary);
    box-shadow: 0 0 12px rgba(214, 172, 104, 0.4);
    color: #0b0b0f;
    animation: buttonPulse 2s infinite alternate;
}

.playing .play-main-btn:hover {
    background: #e6c58e;
    box-shadow: 0 0 20px rgba(214, 172, 104, 0.7);
}

@keyframes buttonPulse {
    0% { box-shadow: 0 0 8px rgba(214, 172, 104, 0.3); }
    100% { box-shadow: 0 0 18px rgba(214, 172, 104, 0.7); }
}

/* Thanh chỉnh âm lượng phát sáng */
.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.78rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 8px;
    margin-bottom: 12px;
}

/* Tối ưu hóa thanh trượt âm lượng trên mọi trình duyệt */
.volume-control input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    background: transparent;
    cursor: pointer;
    border: none;
    outline: none;
}

.volume-control input[type="range"]::-webkit-slider-runnable-track {
    background: rgba(255, 255, 255, 0.15);
    height: 4px;
    border-radius: 2px;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    margin-top: -4px; /* Căn giữa nút kéo 12px trên rãnh 4px */
    background-color: var(--cyan-primary);
    border-radius: 50%;
    height: 12px;
    width: 12px;
    box-shadow: 0 0 8px var(--cyan-primary);
    transition: transform 0.1s ease;
}

.volume-control input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

/* Firefox Support */
.volume-control input[type="range"]::-moz-range-track {
    background: rgba(255, 255, 255, 0.15);
    height: 4px;
    border-radius: 2px;
}

.volume-control input[type="range"]::-moz-range-thumb {
    background-color: var(--cyan-primary);
    border: none;
    border-radius: 50%;
    height: 12px;
    width: 12px;
    box-shadow: 0 0 8px var(--cyan-primary);
    transition: transform 0.1s ease;
}

.volume-control input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.25);
}

.volume-percentage {
    font-family: 'Fira Code', monospace;
    font-size: 0.72rem;
    color: var(--cyan-primary);
    width: 32px;
    text-align: right;
    font-weight: 600;
    text-shadow: 0 0 5px rgba(142, 212, 232, 0.3);
}

/* Danh sách phát nhạc UL/LI đẹp mắt */
.playlist-container {
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius-md);
    border: 1px solid rgba(142, 212, 232, 0.12);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.playlist-header {
    font-size: 0.68rem;
    font-weight: 750;
    color: var(--cyan-primary);
    padding: 8px 12px;
    background: rgba(142, 212, 232, 0.05);
    border-bottom: 1px solid rgba(142, 212, 232, 0.12);
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.playlist-ul {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 140px;
    overflow-y: auto;
}

.playlist-ul::-webkit-scrollbar {
    width: 4px;
}
.playlist-ul::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}
.playlist-ul::-webkit-scrollbar-thumb {
    background: var(--cyan-primary);
    border-radius: 2px;
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    font-size: 0.74rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.playlist-item:last-child {
    border-bottom: none;
}

.playlist-item:hover {
    background: rgba(142, 212, 232, 0.05);
    color: var(--text-primary);
}

.playlist-item.active {
    background: rgba(142, 212, 232, 0.1);
    color: var(--cyan-primary);
    font-weight: 600;
    border-left: 3px solid var(--cyan-primary);
    padding-left: 9px;
}

.playlist-item .item-num {
    font-family: 'Fira Code', monospace;
    font-size: 0.68rem;
    color: var(--text-muted);
    width: 14px;
}

.playlist-item.active .item-num {
    color: var(--cyan-primary);
}

.playlist-item .item-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-item .item-play-icon {
    font-size: 0.68rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.playlist-item.active .item-play-icon {
    opacity: 1;
}

/* Mobile responsive adjustments for floating music player and navbar elements */
@media (max-width: 768px) {
    .music-player-widget {
        top: auto !important;
        bottom: 24px !important;
        left: auto !important;
        right: 24px !important;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5) !important;
    }
    
    .music-player-widget.collapsed {
        left: auto !important;
        right: 24px !important;
        bottom: 24px !important;
        top: auto !important;
    }

    /* Navbar padding and actions layout */
    .navbar {
        padding: 8px 12px !important;
    }

    .nav-container {
        gap: 6px !important;
    }

    /* Reduce brand size on mobile */
    .brand-name {
        font-size: 0.9rem !important;
    }

    .brand-sub {
        font-size: 0.55rem !important;
        letter-spacing: 0.1em !important;
    }

    .brand-logo-wrapper {
        width: 32px !important;
        height: 32px !important;
        padding: 2px !important;
    }

    .brand {
        gap: 8px !important;
    }

    .nav-actions {
        gap: 6px !important;
    }

    /* IP Box: Hide detail text to prevent wrapping/overflow */
    .server-ip-box {
        padding: 6px 8px !important;
        gap: 4px !important;
    }

    .server-ip-box .ip-details {
        display: none !important; /* Hide labels on mobile to save space */
    }

    /* Scale down Discord Authentication Button */
    .discord-login-btn {
        padding: 6px 10px !important;
        font-size: 0.72rem !important;
        gap: 4px !important;
    }

    .discord-login-btn i {
        font-size: 0.8rem !important;
    }

    /* User Profile: hide username text, only show avatar and logout */
    .user-profile {
        padding: 4px 6px !important;
        gap: 4px !important;
    }

    .user-profile span {
        display: none !important; /* Hide text "username" to fit smaller screens */
    }

    .user-profile img {
        width: 20px !important;
        height: 20px !important;
    }

    .logout-btn {
        font-size: 0.8rem !important;
        padding: 2px !important;
    }

    .theme-toggle-btn {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.8rem !important;
    }
}

/* Hide IP box entirely on very small mobile viewports */
@media (max-width: 480px) {
    .server-ip-box {
        display: none !important;
    }
}