:root {
    --bg-dark: #121212;
    --bg-panel: #1e1e24;
    --bg-card: #2b2b36;
    --text-main: #f0f0f0;
    --text-muted: #a0a0b0;
    --border-color: #3a3a48;
    
    /* Default Accent */
    --accent: #34A853; 
    --accent-hover: #2d9448;
    --trend-up: #4caf50;
    --trend-down: #f44336;
    --trend-stable: #ff9800;
}

/* Theme Classes */
body.theme-google_play { --accent: #34A853; --accent-hover: #2d9448; }
body.theme-poki { --accent: #00C2FF; --accent-hover: #00aadd; }
body.theme-crazygames { --accent: #FF4C4C; --accent-hover: #e04343; }
body.theme-yandex_games { --accent: #FC3F1D; --accent-hover: #df3619; }
body.theme-steam { --accent: #66C0F4; --accent-hover: #58a9d6; }
body.theme-new_releases { --accent: #FF6B35; --accent-hover: #e55a2b; }

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    display: flex;
    flex-direction: column;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 0 20px 15px;
    font-size: 1.2rem;
    color: var(--accent);
}

.back-link {
    display: block;
    padding: 8px 20px 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
    transition: color 0.2s;
}

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

.back-link i {
    margin-right: 6px;
}

.platform-nav {
    padding: 20px 0;
}

.platform-nav h3, .filters h3 {
    padding: 0 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.platform-nav ul {
    list-style: none;
}

.platform-nav li {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    border-left: 4px solid transparent;
}

.platform-nav li:hover {
    background-color: var(--bg-card);
}

.platform-nav li.active {
    background-color: var(--bg-card);
    border-left-color: var(--accent);
    color: var(--accent);
    font-weight: bold;
}

.filters {
    padding: 20px;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
}

.filter-group {
    margin-bottom: 15px;
}

.filter-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.filter-group select, .filter-group input[type="text"] {
    width: 100%;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-size: 0.9rem;
}

.filter-group input[type="range"] {
    width: calc(100% - 30px);
    vertical-align: middle;
}

#hype-filter-val {
    display: inline-block;
    width: 25px;
    text-align: right;
    font-size: 0.9rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 30px;
}

.topbar h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

/* Overview Cards */
.overview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--bg-panel);
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid var(--border-color);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent);
}

.card-info h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 5px;
}

/* Charts */
.charts-section {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    margin-bottom: 30px;
}

.chart-container {
    background-color: var(--bg-panel);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.chart-container h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
    font-weight: 500;
}

.chart-container canvas {
    min-height: 280px;
    max-height: 350px;
}

/* Niches */
.niches-section {
    margin-bottom: 30px;
}

.niches-section h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: var(--accent);
}

.niches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.niche-card {
    background: linear-gradient(135deg, var(--bg-panel) 0%, var(--bg-card) 100%);
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.niche-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 4px; height: 100%;
    background-color: var(--accent);
}

.niche-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.niche-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.niche-opp {
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.opp-bar {
    flex: 1;
    height: 8px;
    background-color: var(--bg-dark);
    border-radius: 4px;
    overflow: hidden;
}

.opp-fill {
    height: 100%;
    background-color: var(--accent);
}

/* Table */
.table-section {
    background-color: var(--bg-panel);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.table-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

th:hover {
    color: var(--accent);
}

tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.game-name-cell {
    display: flex;
    flex-direction: column;
}

.game-name {
    font-weight: bold;
    color: #fff;
}

.game-dev {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.badge {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.hype-high { color: #4caf50; }
.hype-med { color: #ff9800; }
.hype-low { color: #f44336; }

.trend-icon {
    font-size: 1.2rem;
}
.trend-up { color: var(--trend-up); }
.trend-down { color: var(--trend-down); }
.trend-stable { color: var(--trend-stable); }

/* New Releases Special Tab */
.nav-special {
    background: linear-gradient(135deg, rgba(255,107,53,0.15) 0%, rgba(255,107,53,0.05) 100%);
    position: relative;
}

.nav-special i {
    color: #FF6B35;
}

.nav-special.active {
    border-left-color: #FF6B35 !important;
    color: #FF6B35 !important;
}

/* Platform Badges */
.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.platform-badge.steam { background: rgba(102,192,244,0.15); color: #66C0F4; }
.platform-badge.google_play { background: rgba(52,168,83,0.15); color: #34A853; }
.platform-badge.poki { background: rgba(0,194,255,0.15); color: #00C2FF; }
.platform-badge.crazygames { background: rgba(255,76,76,0.15); color: #FF4C4C; }
.platform-badge.yandex_games { background: rgba(252,63,29,0.15); color: #FC3F1D; }

/* Retention Bar */
.retention-cell {
    display: flex;
    align-items: center;
    gap: 6px;
}

.retention-bar {
    width: 50px;
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
    overflow: hidden;
}

.retention-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s;
}

.retention-fill.high { background: #4caf50; }
.retention-fill.mid { background: #ff9800; }
.retention-fill.low { background: #f44336; }

/* Insight cell */
.insight-text {
    font-size: 0.78rem;
    color: var(--text-muted);
    max-width: 200px;
    line-height: 1.3;
}

/* Niche insight box */
.niche-insight {
    margin-top: 12px;
    padding: 10px 12px;
    background: rgba(255,255,255,0.03);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
    border-left: 3px solid var(--accent);
}

.niche-metrics {
    display: flex;
    gap: 15px;
    margin-top: 8px;
    font-size: 0.85rem;
}

.niche-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.niche-metric-value {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--accent);
}

.niche-metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Days ago badge */
.days-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255,107,53,0.15);
    color: #FF6B35;
}

/* Responsive */
@media (max-width: 1024px) {
    .charts-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .platform-nav ul {
        display: flex;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .platform-nav li {
        white-space: nowrap;
        border-left: none;
        border-bottom: 4px solid transparent;
    }
    
    .platform-nav li.active {
        border-bottom-color: var(--accent);
    }
}