/* ============================================
   CSS VARIABLES
   ============================================ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #f0f0f5;
    --text-secondary: #8888aa;
    --accent-primary: #00ffaa;
    --accent-secondary: #ff6b35;
    --accent-tertiary: #6366f1;
    --border-color: #2a2a3a;
    --glass-bg: rgba(18, 18, 26, 0.85);
    --shadow-glow: 0 0 40px rgba(0, 255, 170, 0.15);
}

/* ============================================
   BASE STYLES
   ============================================ */

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

body {
    font-family: 'Space Mono', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 255, 170, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
}

/* ============================================
   LANDING PAGE
   ============================================ */

.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 2rem;
    position: relative;
    z-index: 10;
}

.landing-content { max-width: 800px; text-align: center; }

.landing h1 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 4rem;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
}

.landing-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.landing-rows {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 4rem;
    text-align: left;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.landing-row {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem 2.5rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
}

.row-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
    color: var(--accent-primary);
}

.row-content { flex: 1; }

.row-content h3 {
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    color: var(--accent-primary);
    margin-bottom: 0.75rem;
}

.row-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.row-content strong { color: var(--text-primary); }
.row-content em { color: var(--accent-tertiary); font-style: normal; }

.warning-row {
    border-color: var(--accent-secondary);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.05), rgba(255, 107, 53, 0.02));
    box-shadow: 0 0 0 1px rgba(255, 107, 53, 0.2), 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.warning-row:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 0 1px rgba(255, 107, 53, 0.4), 0 4px 25px rgba(0, 0, 0, 0.4);
}

.warning-row h3 { color: var(--accent-secondary); }

.enter-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1rem 3rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.enter-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 170, 0.4);
}

/* ============================================
   APP CONTAINER
   ============================================ */

.app { display: none; min-height: 100vh; }
.app.active { display: block; }

/* ============================================
   HEADER
   ============================================ */

header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.5rem 3rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.home-btn {
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.home-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.header-title {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent-primary);
    cursor: pointer;
}

.stats-bar {
    display: flex;
    gap: 2rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat { display: flex; align-items: center; gap: 0.5rem; }
.stat-value { color: var(--accent-primary); font-weight: 700; }

/* ============================================
   TABS
   ============================================ */

.tabs { display: flex; gap: 0.5rem; align-items: center; }

.tab {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    padding: 0.6rem 1.2rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.tab:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.tab-count { font-size: 0.7rem; opacity: 0.7; margin-left: 0.3rem; }

.github-tab {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    margin-left: auto;
}

.github-tab:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main { position: relative; z-index: 5; padding: 2rem; }

/* ============================================
   CLUSTER GRID
   ============================================ */

.cluster-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1800px;
    margin: 0 auto;
}

.cluster-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.cluster-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.cluster-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.cluster-card:hover::before { opacity: 1; }

.card-image { width: 100%; aspect-ratio: 1; object-fit: cover; background: var(--bg-tertiary); }
.card-content { padding: 1rem; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
.cluster-id { font-family: 'Inter', sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--accent-primary); }
.cluster-size { font-size: 0.7rem; color: var(--text-secondary); background: var(--bg-tertiary); padding: 0.25rem 0.5rem; border-radius: 4px; }
.card-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-secondary); margin-bottom: 0.25rem; }
.card-text { font-size: 0.8rem; color: var(--text-primary); line-height: 1.4; margin-bottom: 0.75rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-genre { font-size: 0.75rem; color: var(--accent-secondary); font-style: italic; }

.audio-indicator {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}
.audio-indicator svg { width: 16px; height: 16px; fill: var(--accent-primary); }

.analysis-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent-tertiary);
    color: white;
    font-size: 0.6rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   MODAL
   ============================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem;
    overflow-y: auto;
}
.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    max-width: 1100px;
    width: 100%;
    margin: 2rem 0;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10;
}
.modal-close:hover { background: var(--accent-primary); color: var(--bg-primary); }

.modal-header {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.modal-composite {
    width: 200px;
    height: 200px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.2s;
    flex-shrink: 0;
}
.modal-composite:hover { border-color: var(--accent-primary); }

.modal-header-info { flex: 1; }
.modal-title { font-family: 'Inter', sans-serif; font-weight: 700; font-size: 2rem; margin-bottom: 0.5rem; }
.modal-title span { color: var(--accent-primary); }
.modal-stats { display: flex; gap: 2rem; font-size: 0.8rem; color: var(--text-secondary); flex-wrap: wrap; }

/* ============================================
   MODAL TABS
   ============================================ */

.modal-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.modal-tab {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.modal-tab:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.modal-tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.modal-tab-content { display: none; }
.modal-tab-content.active { display: block; }

.modal-body { padding: 2rem; }
.modal-section { margin-bottom: 2rem; }

.section-title {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.section-title svg { width: 18px; height: 18px; }

/* ============================================
   ANALYSIS SECTION
   ============================================ */

.analysis-section {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(0, 255, 170, 0.05));
    border: 1px solid var(--accent-tertiary);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.analysis-section .section-title { color: var(--accent-tertiary); }
.analysis-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-secondary); margin-bottom: 0.5rem; margin-top: 1rem; }
.analysis-label:first-of-type { margin-top: 0; }
.analysis-title { font-family: 'Inter', sans-serif; font-size: 1.3rem; font-weight: 700; color: var(--text-primary); margin-bottom: 1rem; line-height: 1.3; }
.analysis-text { font-size: 0.9rem; line-height: 1.7; color: var(--text-primary); }
.analysis-text p { margin-bottom: 1rem; }
.analysis-text p:last-child { margin-bottom: 0; }
.analysis-themes { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.analysis-theme { background: var(--bg-tertiary); border: 1px solid var(--border-color); padding: 0.3rem 0.8rem; border-radius: 20px; font-size: 0.75rem; color: var(--text-secondary); }

/* ============================================
   AUDIO SECTION
   ============================================ */

.audio-section { background: var(--bg-tertiary); border-radius: 12px; padding: 1.5rem; }
.audio-player audio { width: 100%; height: 50px; border-radius: 8px; }
.audio-source { font-size: 0.75rem; color: var(--text-secondary); margin-top: 0.5rem; }
.no-audio { color: var(--text-secondary); font-style: italic; font-size: 0.85rem; }

/* ============================================
   RANGE GRID
   ============================================ */

.range-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.range-item { text-align: center; }
.range-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); margin-bottom: 0.5rem; }
.range-label.typical { color: var(--accent-primary); }
.range-label.atypical { color: var(--accent-secondary); }
.range-image { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; border: 2px solid var(--border-color); transition: all 0.2s; cursor: pointer; }
.range-item:hover .range-image { border-color: var(--accent-primary); transform: scale(1.02); }
.range-distance { font-size: 0.7rem; color: var(--text-secondary); margin-top: 0.25rem; }

/* ============================================
   KEYWORDS GRID
   ============================================ */

.keywords-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.keyword-group { background: var(--bg-tertiary); border-radius: 8px; padding: 1rem; }
.keyword-group-title { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-tertiary); margin-bottom: 0.5rem; }
.keyword-text { font-size: 0.85rem; line-height: 1.5; color: var(--text-primary); }

/* ============================================
   ALL IMAGES GRID
   ============================================ */

.all-images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.75rem;
    max-height: 500px;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.all-images-grid img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 6px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
}

.all-images-grid img:hover {
    border-color: var(--accent-primary);
    transform: scale(1.03);
}

.all-images-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.all-images-sort {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.all-images-sort select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    padding: 0.3rem 0.5rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
}

/* ============================================
   LIGHTBOX
   ============================================ */

.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}
.lightbox.active { display: flex; }
.lightbox img { max-width: 90%; max-height: 90%; object-fit: contain; border-radius: 8px; box-shadow: 0 0 50px rgba(0,0,0,0.5); }
.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 2rem;
    color: white;
    cursor: pointer;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: background 0.2s;
}
.lightbox-close:hover { background: rgba(255,255,255,0.2); }

/* ============================================
   LOADING & EMPTY STATES
   ============================================ */

.loading { display: flex; align-items: center; justify-content: center; min-height: 50vh; flex-direction: column; gap: 1rem; }
.spinner { width: 50px; height: 50px; border: 3px solid var(--border-color); border-top-color: var(--accent-primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { text-align: center; padding: 4rem 2rem; color: var(--text-secondary); }
.empty-state h3 { font-family: 'Inter', sans-serif; color: var(--text-primary); margin-bottom: 0.5rem; }

/* ============================================
   TAB DESCRIPTIONS
   ============================================ */

.tab-description {
    max-width: 1800px;
    margin: 0 auto 1.5rem auto;
    padding: 0 0.5rem;
}

.description-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 0;
}

#all-description {
    border-color: rgba(255, 107, 53, 0.3);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.03), transparent);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .landing h1 { font-size: 2.5rem; }
    .landing-row { flex-direction: column; gap: 1rem; padding: 1.25rem; }
    .row-icon { width: auto; }
    .header-top { flex-direction: column; gap: 1rem; align-items: flex-start; }
    .header-left { width: 100%; }
    .tabs { flex-wrap: wrap; }
    .github-tab { margin-left: 0; margin-top: 0.5rem; }
    .cluster-grid { grid-template-columns: 1fr; }
    .range-grid { grid-template-columns: repeat(3, 1fr); }
    .keywords-grid { grid-template-columns: 1fr; }
    .modal-header { flex-direction: column; }
    .modal-composite { width: 100%; height: auto; aspect-ratio: 1; }
    .all-images-grid { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); }