/* ═══════════════════════════════════════════════════════════
   OSS App Stats — App-Specific Styles
   Layers on top of BDL styles.css (loaded from bitcoindatalabs.org)
   ═══════════════════════════════════════════════════════════ */

:root {
    --oss-bg: #FDFBF9;
    --oss-text: #2A3342;
    --oss-text-secondary: #5F6C7E;
    --oss-accent: #E8916B;
    --oss-accent-dark: #D17B55;
    --oss-surface: #F5F1EE;
    --oss-border: rgba(42, 51, 66, 0.12);
    --oss-card-shadow: 0 2px 12px rgba(42, 51, 66, 0.06);
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-serif: 'Newsreader', Georgia, serif;

    /* Override BDL header to match */
    --bdl-header-bg: var(--oss-bg);
    --bdl-header-bg-compressed: var(--oss-surface);
}

[data-theme="dark"] {
    --oss-bg: #05070A;
    --oss-text: #FDF6E3;
    --oss-text-secondary: #94A3B8;
    --oss-surface: #0D0F14;
    --oss-border: rgba(253, 246, 227, 0.08);
    --oss-card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --bdl-header-bg: rgba(5, 7, 10, 0.9);
    --bdl-header-bg-compressed: rgba(5, 7, 10, 0.98);
}

body {
    background-color: var(--oss-bg);
    color: var(--oss-text);
    font-family: var(--font-sans);
}

/* ═══ Page Container ═══ */
.oss-container {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 2rem 4rem;
}

/* ═══ Page Header ═══ */
.page-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 3px double var(--oss-text);
}

.page-header h1 {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin: 0 0 0.5rem 0;
    text-transform: uppercase;
}

.page-subtitle {
    font-size: 1.05rem;
    color: var(--oss-text-secondary);
    margin: 0;
    line-height: 1.6;
}

.page-subtitle a {
    color: var(--oss-accent-dark);
    text-decoration: none;
}

.page-subtitle a:hover {
    text-decoration: underline;
}

/* ═══ Pulse Bar (Stats Overview) ═══ */
.pulse-bar {
    display: flex;
    justify-content: space-around;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--oss-text);
    margin-bottom: 2rem;
    text-align: center;
}

.pulse-stat {
    display: flex;
    flex-direction: column;
    flex: 1;
    border-right: 1px solid var(--oss-border);
}

.pulse-stat:last-child {
    border-right: none;
}

.pulse-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--oss-accent-dark);
    font-family: var(--font-serif);
}

.pulse-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    color: var(--oss-text-secondary);
    margin-top: 0.2rem;
}

/* ═══ Section Headers ═══ */
.section-header {
    font-family: var(--font-sans);
    font-size: 1.3rem;
    font-weight: 700;
    border-top: 3px double var(--oss-text);
    border-bottom: 1px solid var(--oss-text);
    padding: 0.8rem 0 0.4rem;
    margin: 2.5rem 0 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-header i {
    color: var(--oss-accent);
}

/* ═══ Category Label ═══ */
.category-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--oss-accent);
    margin: 2rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--oss-border);
}

/* ═══ Leaderboard Table ═══ */
.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.leaderboard-table thead th {
    text-align: left;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--oss-text-secondary);
    padding: 0.6rem 0.8rem;
    border-bottom: 2px solid var(--oss-text);
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.leaderboard-table thead th:hover {
    color: var(--oss-accent);
}

.leaderboard-table thead th.sort-active {
    color: var(--oss-accent);
}

.leaderboard-table thead th .sort-icon {
    margin-left: 4px;
    font-size: 0.65rem;
    opacity: 0.5;
}

.leaderboard-table thead th.sort-active .sort-icon {
    opacity: 1;
}

.leaderboard-table tbody tr {
    border-bottom: 1px solid var(--oss-border);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.leaderboard-table tbody tr:hover {
    background-color: rgba(232, 145, 107, 0.04);
}

.leaderboard-table tbody td {
    padding: 0.75rem 0.8rem;
    vertical-align: middle;
}

.leaderboard-table .project-name-cell {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.leaderboard-table .project-name {
    font-weight: 600;
    color: var(--oss-text);
}

.leaderboard-table .project-repo {
    font-size: 0.75rem;
    color: var(--oss-text-secondary);
    font-family: 'SFMono-Regular', Consolas, monospace;
}

.leaderboard-table .rank-cell {
    font-weight: 700;
    color: var(--oss-accent);
    font-family: var(--font-serif);
    font-size: 1.1rem;
    width: 40px;
    text-align: center;
}

.leaderboard-table .number-cell {
    font-family: var(--font-serif);
    font-weight: 600;
    text-align: right;
    white-space: nowrap;
}

.leaderboard-table .tag-cell {
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.8rem;
    color: var(--oss-accent-dark);
}

.leaderboard-table .date-cell {
    font-size: 0.8rem;
    color: var(--oss-text-secondary);
    white-space: nowrap;
}

.leaderboard-table .stars-cell {
    text-align: right;
    white-space: nowrap;
}

.leaderboard-table .stars-cell i {
    color: #FFB000;
    margin-right: 4px;
    font-size: 0.75rem;
}

.freshness-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.freshness-hot {
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.freshness-warm {
    background: rgba(232, 145, 107, 0.1);
    color: var(--oss-accent-dark);
    border: 1px solid rgba(232, 145, 107, 0.3);
}

.freshness-cool {
    background: rgba(130, 147, 171, 0.1);
    color: var(--oss-text-secondary);
    border: 1px solid rgba(130, 147, 171, 0.3);
}

.freshness-stale {
    background: rgba(239, 68, 68, 0.08);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ═══ Project Detail Cards ═══ */
.project-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.project-card {
    background: var(--oss-bg);
    border: 1px solid var(--oss-border);
    border-radius: 4px;
    padding: 1.5rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}

.project-card:hover {
    border-color: var(--oss-accent);
    box-shadow: var(--oss-card-shadow);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.project-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--oss-text);
    margin: 0 0 0.25rem 0;
}

.project-card-repo {
    font-size: 0.78rem;
    color: var(--oss-text-secondary);
    font-family: 'SFMono-Regular', Consolas, monospace;
}

.project-card-repo a {
    color: var(--oss-accent-dark);
    text-decoration: none;
}

.project-card-repo a:hover {
    text-decoration: underline;
}

.project-card-stars {
    font-size: 0.85rem;
    color: var(--oss-text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.project-card-stars i {
    color: #FFB000;
}

.project-card-description {
    font-size: 0.88rem;
    color: var(--oss-text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-card-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--oss-border);
    border-bottom: 1px solid var(--oss-border);
    margin-bottom: 1rem;
}

.mini-stat {
    text-align: center;
}

.mini-stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-serif);
    color: var(--oss-text);
}

.mini-stat-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--oss-text-secondary);
    font-weight: 600;
}

/* Chart container */
.chart-container {
    position: relative;
    height: 200px;
    margin: 0.5rem 0;
}

.chart-container canvas {
    max-height: 200px;
}

/* Platform bar */
.platform-bar {
    display: flex;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin: 0.5rem 0;
    background: var(--oss-surface);
}

.platform-segment {
    transition: width 0.5s ease;
    min-width: 2px;
}

.platform-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
    font-size: 0.72rem;
    color: var(--oss-text-secondary);
}

.platform-legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.platform-dot {
    width: 8px;
    height: 8px;
    border-radius: 2px;
    flex-shrink: 0;
}

.platform-legend-value {
    font-weight: 600;
    color: var(--oss-text);
}

/* Platform colors */
.platform-windows { background: #0078D4; }
.platform-macos { background: #E8916B; }
.platform-linux { background: #FFB000; }
.platform-source { background: #8293AB; }
.platform-signatures { background: #D4A298; }
.platform-other { background: #5F6C7E; }

/* ═══ Release Table (expandable) ═══ */
.releases-toggle {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--oss-accent-dark);
    cursor: pointer;
    border: none;
    background: transparent;
    padding: 0.5rem 0;
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.2s;
}

.releases-toggle:hover {
    color: var(--oss-text);
}

.releases-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

.releases-table th {
    text-align: left;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--oss-text-secondary);
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--oss-border);
    font-weight: 700;
}

.releases-table td {
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--oss-border);
    vertical-align: middle;
}

.releases-table .tag-link {
    color: var(--oss-accent-dark);
    text-decoration: none;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-weight: 600;
}

.releases-table .tag-link:hover {
    text-decoration: underline;
}

.prerelease-badge {
    font-size: 0.6rem;
    background: rgba(232, 145, 107, 0.1);
    color: var(--oss-accent-dark);
    padding: 0.1rem 0.4rem;
    border-radius: 8px;
    font-weight: 600;
    margin-left: 4px;
}

/* ═══ Loading State ═══ */
.loading-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--oss-text-secondary);
}

.loading-spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--oss-border);
    border-top-color: var(--oss-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ═══ Error State ═══ */
.error-state {
    text-align: center;
    padding: 2rem;
    color: #dc2626;
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-radius: 4px;
    margin: 1rem 0;
}

/* ═══ Data Freshness Note ═══ */
.data-note {
    font-size: 0.78rem;
    color: var(--oss-text-secondary);
    text-align: center;
    margin-top: 2rem;
    padding: 0.75rem;
    background: var(--oss-surface);
    border-radius: 4px;
    border-left: 3px solid var(--oss-accent);
}

.data-note a {
    color: var(--oss-accent-dark);
    text-decoration: none;
}

.data-note a:hover {
    text-decoration: underline;
}

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
    .oss-container {
        padding: 1rem;
    }

    .page-header h1 {
        font-size: clamp(1.8rem, 8vw, 3rem);
    }

    .pulse-bar {
        flex-wrap: wrap;
        gap: 1rem 0;
    }

    .pulse-stat {
        flex: 1 1 45%;
        border-right: none;
    }

    .pulse-stat:nth-child(odd) {
        border-right: 1px solid var(--oss-border);
    }

    .project-cards-grid {
        grid-template-columns: 1fr;
    }

    .project-card-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .leaderboard-table {
        font-size: 0.8rem;
    }

    .leaderboard-table .hide-mobile {
        display: none;
    }
}

@media (max-width: 500px) {
    .leaderboard-table thead th,
    .leaderboard-table tbody td {
        padding: 0.5rem 0.4rem;
    }
}

/* ═══ Override BDL Header/Footer ═══ */
#header .app-header-main,
#header .top-bar {
    background: var(--oss-bg) !important;
}

#header .app-header-main {
    border-bottom: 1px solid var(--oss-border) !important;
}

#footer footer,
#footer .footer {
    background: var(--oss-surface) !important;
    border-top: 1px solid var(--oss-border) !important;
}

/* ═══ Suite dropdown theme match ═══ */
.bdl-suite-details summary {
    color: var(--oss-accent-dark) !important;
}

.bdl-suite-details > *:not(summary) {
    background-color: var(--oss-bg) !important;
    border: 1px solid var(--oss-border) !important;
}

/* ═══ Comparison Section ═══ */
.comparison-chart-container {
    position: relative;
    height: 350px;
    margin: 1rem 0;
}

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

/* ═══ Insight Cards ═══ */
.insight-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.insight-card {
    background: var(--oss-surface);
    border: 1px solid var(--oss-border);
    border-left: 3px solid var(--oss-accent);
    padding: 1rem 1.2rem;
    border-radius: 2px;
}

.insight-card-label {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--oss-accent);
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.insight-card-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-serif);
    color: var(--oss-text);
    margin-bottom: 0.2rem;
}

.insight-card-detail {
    font-size: 0.8rem;
    color: var(--oss-text-secondary);
    line-height: 1.4;
}

/* ═══ Animations ═══ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.4s ease forwards;
}

.project-card {
    animation: fadeInUp 0.4s ease forwards;
}

.project-card:nth-child(2) { animation-delay: 0.05s; }
.project-card:nth-child(3) { animation-delay: 0.1s; }
.project-card:nth-child(4) { animation-delay: 0.15s; }
.project-card:nth-child(5) { animation-delay: 0.2s; }
.project-card:nth-child(6) { animation-delay: 0.25s; }

/* ═══ Chart Tabs ═══ */
.chart-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}
.chart-tab-btn {
    background: transparent;
    border: 1px solid var(--oss-border);
    color: var(--oss-text-secondary);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s ease;
}
.chart-tab-btn:hover {
    border-color: var(--oss-text-secondary);
}
.chart-tab-btn.active {
    background: var(--oss-accent);
    border-color: var(--oss-accent);
    color: white;
}