/* ===================================================================
   SLEEVE — Cover Art Archive
   Aesthetic: Midnight editorial. Cool, clean, confident.
   Deep blacks with icy blue-white accents, sharp geometry.
   =================================================================== */

:root {
    --bg-deep: #050507;
    --bg: #0b0b0f;
    --bg-card: #12121a;
    --bg-elevated: #1a1a25;
    --bg-hover: #20202e;
    --surface: #252535;
    --border: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    --text: #eaeaef;
    --text-dim: #8888a0;
    --text-muted: #55556a;
    --accent: #6e8eff;
    --accent-glow: #8aa4ff;
    --accent-dim: #4c6ad4;
    --accent-bg: rgba(110, 142, 255, 0.07);
    --accent-secondary: #c07aff;
    --radius: 6px;
    --radius-lg: 10px;
    --font-display: 'Outfit', 'Helvetica Neue', sans-serif;
    --font-body: 'Outfit', 'Helvetica Neue', sans-serif;
    --font-mono: 'Space Mono', 'Consolas', monospace;
    --transition: 160ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-deep);
    color: var(--text);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Subtle noise texture */
.grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.018;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--surface); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-dim); }

/* ---- HEADER ---- */
.header {
    background: var(--bg-deep);
    padding: 1.5rem 2rem 0.75rem;
}

.header-inner {
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.logo-icon svg {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.logo-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    line-height: 1.2;
}

.logo-note {
    margin-right: 0.2rem;
}

.logo-subtitle {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--accent);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.55;
    line-height: 1.2;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

.header-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.4rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.header-btn:hover {
    color: var(--accent);
    border-color: var(--accent-dim);
    background: var(--accent-bg);
}

/* ---- SEARCH ---- */
.search-section {
    padding: 2.5rem 2rem 0;
    max-width: 1600px;
    margin: 0 auto;
}

.search-container {
    max-width: 640px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
    border-color: rgba(110, 142, 255, 0.3);
    box-shadow: 0 0 0 3px var(--accent-bg), 0 8px 40px rgba(0, 0, 0, 0.4);
}

.search-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: color var(--transition);
}

.search-box:focus-within .search-icon {
    color: var(--accent);
}

#searchInput {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 300;
    padding: 0.8rem 0.75rem;
    caret-color: var(--accent);
}

#searchInput::placeholder {
    color: var(--text-muted);
}

.search-type-toggle {
    display: flex;
    gap: 1px;
    background: var(--bg-deep);
    border-radius: var(--radius);
    padding: 2px;
}

.type-btn {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.3rem 0.55rem;
    border: none;
    border-radius: 4px;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.type-btn.active {
    background: var(--accent);
    color: #fff;
}

.type-btn:hover:not(.active) {
    color: var(--text-dim);
}

.filter-bar {
    display: flex;
    gap: 0.35rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.filter-chip {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.25rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: 100px;
    background: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.filter-chip:hover {
    border-color: var(--border-light);
    color: var(--text-dim);
}

.filter-chip.active {
    border-color: var(--accent-dim);
    background: var(--accent-bg);
    color: var(--accent);
}

/* ---- ARTIST BANNER ---- */
.artist-banner {
    background: linear-gradient(135deg, var(--accent-bg) 0%, transparent 50%);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 2rem;
}

.artist-banner-inner {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.artist-banner-name {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.artist-banner-meta {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
}

.artist-banner-close {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.artist-banner-close:hover {
    border-color: var(--accent-dim);
    color: var(--accent);
}

/* ---- GALLERY ---- */
.gallery-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem 2rem 4rem;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
    gap: 1rem;
}

/* ---- CARD ---- */
.card {
    position: relative;
    cursor: pointer;
    border-radius: var(--radius);
    overflow: hidden;
    animation: cardIn 0.35s ease both;
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-cover {
    position: relative;
    aspect-ratio: 1;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s cubic-bezier(0.2, 0, 0.2, 1);
    will-change: transform;
}

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

.card-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    background: linear-gradient(0deg, rgba(5,5,7,0.75) 0%, transparent 45%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:hover .card-cover::after {
    opacity: 1;
}

.card-info {
    padding: 0.55rem 0.1rem;
}

.card-title {
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
    transition: color var(--transition);
}

.card:hover .card-title {
    color: var(--accent-glow);
}

.card-artist {
    font-family: var(--font-body);
    font-size: 0.68rem;
    font-weight: 300;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 0.1rem;
    cursor: pointer;
    transition: color var(--transition);
}

.card-artist:hover {
    color: var(--accent);
}

.card-badge {
    position: absolute;
    top: 0.4rem;
    right: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.48rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    background: rgba(5, 5, 7, 0.7);
    backdrop-filter: blur(12px);
    color: var(--text-dim);
    border: 1px solid var(--border);
    opacity: 0;
    transform: translateY(-4px);
    transition: all 0.2s ease;
}

.card:hover .card-badge {
    opacity: 1;
    transform: translateY(0);
}

.card-download {
    position: absolute;
    bottom: 0.4rem;
    right: 0.4rem;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(5, 5, 7, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    color: var(--text-dim);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(4px);
    transition: all 0.2s ease;
    z-index: 2;
}

.card:hover .card-download {
    opacity: 1;
    transform: translateY(0);
}

.card-download:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Placeholder shimmer */
.card-cover .placeholder {
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, var(--bg-card) 30%, var(--bg-elevated) 50%, var(--bg-card) 70%);
    background-size: 200% 100%;
    animation: shimmer 1.8s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---- LOADER ---- */
.loader {
    display: flex;
    justify-content: center;
    padding: 3rem 0;
}

.loader.hidden {
    display: none;
}

.loader-dots {
    display: flex;
    gap: 5px;
}

.loader-dots span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent-dim);
    animation: pulse 1.2s ease-in-out infinite;
}

.loader-dots span:nth-child(2) { animation-delay: 0.15s; }
.loader-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes pulse {
    0%, 80%, 100% { opacity: 0.15; transform: scale(0.8); }
    40% { opacity: 0.8; transform: scale(1.2); }
}

/* ---- EMPTY STATE ---- */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
}

.empty-icon svg {
    width: 56px;
    height: 56px;
    margin-bottom: 1.25rem;
    opacity: 0.5;
}

.empty-state p {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--text-dim);
}

.empty-hint {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    display: block;
    margin-top: 0.4rem;
}

/* ---- MODAL ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    max-width: 92vw;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(16px) scale(0.98);
    transition: transform 0.3s cubic-bezier(0.2, 0, 0.2, 1);
}

.modal-overlay.open .modal {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 10;
    background: rgba(5, 5, 7, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    color: var(--text-dim);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.modal-close:hover {
    border-color: var(--accent-dim);
    color: var(--accent);
}

.modal-content {
    display: flex;
    align-items: flex-start;
}

.modal-cover {
    flex-shrink: 0;
    overflow: hidden;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    line-height: 0;
}

.modal-cover img {
    display: block;
    max-height: 85vh;
}

.modal-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.modal-type {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    background: var(--accent-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    align-self: flex-start;
    border: 1px solid rgba(110, 142, 255, 0.12);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.15;
    color: var(--text);
    margin-top: 0.25rem;
}

.modal-artist {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--accent);
    cursor: pointer;
    transition: color var(--transition);
}

.modal-artist:hover {
    color: var(--accent-glow);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.modal-meta {
    display: flex;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: 0.35rem;
}

.modal-download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    text-decoration: none;
    padding: 0.5rem 0.85rem;
    border: 1px solid rgba(110, 142, 255, 0.2);
    border-radius: var(--radius);
    background: var(--accent-bg);
    align-self: flex-start;
    transition: all var(--transition);
    margin-top: 0.25rem;
}

.modal-download-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.modal-tracklist {
    margin-top: 0.6rem;
    flex: 1;
    overflow-y: auto;
}

.track-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.4rem 0.35rem;
    border-radius: 4px;
    font-size: 0.78rem;
    transition: background var(--transition);
}

.track-row:hover {
    background: var(--accent-bg);
}

.track-num {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    width: 1.4rem;
    text-align: right;
    flex-shrink: 0;
}

.track-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 400;
}

.track-explicit {
    font-family: var(--font-mono);
    font-size: 0.45rem;
    font-weight: 700;
    color: var(--bg);
    background: var(--text-muted);
    padding: 0.08rem 0.25rem;
    border-radius: 2px;
    flex-shrink: 0;
}

.track-duration {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .header { padding: 0 1rem; }
    .search-section { padding: 1.5rem 1rem 0; }
    .gallery-container { padding: 1rem 1rem 3rem; }
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.6rem;
    }
    .modal-content {
        flex-direction: column;
    }
    .modal-cover {
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .modal-cover img {
        width: 100%;
        max-height: 45vh;
        object-fit: contain;
    }
    .modal-info {
        padding: 1.25rem;
    }
    .artist-banner-name {
        font-size: 1.3rem;
    }
    .header-stats { display: none; }
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(115px, 1fr));
        gap: 0.4rem;
    }
    .card-info { padding: 0.35rem 0; }
    .card-title { font-size: 0.7rem; }
}

@media (min-width: 1400px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(195px, 1fr));
    }
}