/* ============================================
   URBot Platform Stats — Dark Analytics Theme
   ============================================ */

:root {
    --stats-bg: #0a0a1a;
    --stats-bg-card: rgba(255, 255, 255, 0.04);
    --stats-bg-card-hover: rgba(255, 255, 255, 0.07);
    --stats-border: rgba(255, 255, 255, 0.08);
    --stats-text: #e2e8f0;
    --stats-text-dim: #94a3b8;
    --stats-text-muted: #64748b;
    --stats-accent: #2563eb;
    --stats-accent-glow: rgba(37, 99, 235, 0.25);
    --stats-success: #10b981;
    --stats-warning: #f59e0b;
    --stats-danger: #ef4444;
    --stats-purple: #8b5cf6;
    --stats-font: 'Segoe UI', 'Roboto', 'Arial', sans-serif;
    --stats-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
    --stats-radius: 14px;
}

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

body {
    background: var(--stats-bg);
    color: var(--stats-text);
    font-family: var(--stats-font);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ---- Header ---- */
.stats-header {
    text-align: center;
    padding: 3rem 2rem 2.5rem;
    position: relative;
    background: linear-gradient(180deg, #0f0f2a 0%, var(--stats-bg) 100%);
}

.stats-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 600px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--stats-accent-glow), transparent);
}

.stats-header-nav {
    position: absolute;
    top: 1.25rem;
    left: 1.5rem;
}

.stats-back-link {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .45rem 1rem;
    color: var(--stats-text-dim);
    font-size: .85rem;
    text-decoration: none;
    border-radius: 2rem;
    border: 1px solid var(--stats-border);
    transition: color .2s, border-color .2s;
}

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

.stats-header-right {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    display: flex;
    align-items: center;
    gap: .75rem;
}

.stats-logo {
    width: 56px;
    height: 56px;
    margin: 0 auto .75rem;
}

.stats-logo img {
    width: 100%;
    height: 100%;
}

.stats-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: .2rem;
    color: var(--stats-accent);
    margin-bottom: .35rem;
}

.stats-subtitle {
    font-size: 1rem;
    color: var(--stats-text-dim);
    letter-spacing: .1rem;
    font-weight: 300;
}

.stats-refresh-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    margin-top: .75rem;
    padding: .3rem .8rem;
    background: var(--stats-bg-card);
    border: 1px solid var(--stats-border);
    border-radius: 2rem;
    font-size: .75rem;
    color: var(--stats-text-muted);
}

.stats-refresh-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--stats-success);
    animation: stats-pulse 2s ease-in-out infinite;
}

@keyframes stats-pulse {
    0%, 100% { opacity: .4; }
    50% { opacity: 1; }
}

/* ---- Main Content ---- */
.stats-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

/* ---- Metric Cards Row ---- */
.stats-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 3rem;
}

.metric-card {
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1.5rem;
    text-align: center;
    animation: stats-fade-in .6s ease-out both;
}

.metric-card:nth-child(2) { animation-delay: .1s; }
.metric-card:nth-child(3) { animation-delay: .2s; }
.metric-card:nth-child(4) { animation-delay: .3s; }

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--stats-accent);
    font-family: var(--stats-mono);
    line-height: 1.2;
}

.metric-value.accent-green { color: var(--stats-success); }
.metric-value.accent-purple { color: var(--stats-purple); }
.metric-value.accent-yellow { color: var(--stats-warning); }

.metric-label {
    font-size: .85rem;
    color: var(--stats-text-dim);
    margin-top: .35rem;
    text-transform: uppercase;
    letter-spacing: .08rem;
}

/* ---- Section Headers ---- */
.stats-section {
    margin-bottom: 3rem;
    animation: stats-fade-in .6s ease-out both;
}

.stats-section:nth-child(2) { animation-delay: .15s; }
.stats-section:nth-child(3) { animation-delay: .25s; }
.stats-section:nth-child(4) { animation-delay: .35s; }
.stats-section:nth-child(5) { animation-delay: .45s; }
.stats-section:nth-child(6) { animation-delay: .55s; }

.section-header {
    display: flex;
    align-items: baseline;
    gap: .75rem;
    margin-bottom: 1.25rem;
}

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

.section-badge {
    font-size: .75rem;
    padding: .2rem .6rem;
    background: var(--stats-accent-glow);
    color: var(--stats-accent);
    border-radius: 1rem;
    font-weight: 600;
}

.section-subtitle {
    font-size: .85rem;
    color: var(--stats-text-muted);
    margin-top: -.5rem;
    margin-bottom: 1rem;
}

/* ---- Trending Bot Cards ---- */
.trending-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.trending-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--stats-text);
    transition: background .2s, border-color .2s, transform .15s;
    position: relative;
    overflow: hidden;
}

.trending-card:hover {
    background: var(--stats-bg-card-hover);
    border-color: var(--stats-accent);
    transform: translateY(-2px);
}

.trending-rank {
    position: absolute;
    top: .5rem;
    right: .75rem;
    font-size: .7rem;
    font-weight: 700;
    color: var(--stats-text-muted);
    font-family: var(--stats-mono);
}

.trending-rank.top-3 {
    color: var(--stats-warning);
}

.trending-avatar {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
    overflow: hidden;
}

.trending-avatar img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.trending-info {
    flex: 1;
    min-width: 0;
}

.trending-name {
    font-size: .95rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.trending-stats {
    display: flex;
    gap: .75rem;
    font-size: .75rem;
    color: var(--stats-text-muted);
    margin-top: .2rem;
}

.trending-stat-item {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
}

.trending-activity {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-left: auto;
    flex-shrink: 0;
}

.trending-activity.hot {
    background: var(--stats-danger);
    box-shadow: 0 0 8px rgba(239, 68, 68, .5);
    animation: stats-pulse 1.5s ease-in-out infinite;
}

.trending-activity.warm {
    background: var(--stats-warning);
    box-shadow: 0 0 6px rgba(245, 158, 11, .4);
}

.trending-activity.steady {
    background: var(--stats-success);
}

/* ---- Popular (Engagement-Ranked) Cards ---- */
.popular-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.popular-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--stats-text);
    transition: background .2s, border-color .2s, transform .15s;
}

.popular-card:hover {
    background: var(--stats-bg-card-hover);
    border-color: var(--stats-warning);
    transform: translateY(-2px);
}

.popular-avatar {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
    overflow: hidden;
}

.popular-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.popular-info { flex: 1; min-width: 0; }

.popular-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.popular-stats {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 4px;
}

.popular-engagement {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--stats-warning);
}

.popular-detail {
    font-size: 0.75rem;
    color: var(--stats-text-dim);
}

/* ---- Seasonal Cards ---- */
.seasonal-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.seasonal-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: var(--stats-text);
    transition: background .2s, border-color .2s, transform .15s;
}

.seasonal-card:hover {
    background: var(--stats-bg-card-hover);
    border-color: var(--stats-success);
    transform: translateY(-2px);
}

.seasonal-avatar {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
    overflow: hidden;
}

.seasonal-avatar img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.seasonal-info { flex: 1; min-width: 0; }

.seasonal-name {
    font-size: .9rem;
    font-weight: 600;
}

.seasonal-reason {
    font-size: .75rem;
    color: var(--stats-text-muted);
    margin-top: .15rem;
    line-height: 1.35;
}

/* ---- Synergy Cards ---- */
.synergy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.synergy-card {
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1.25rem;
    transition: background .2s, border-color .2s;
}

.synergy-card:hover {
    background: var(--stats-bg-card-hover);
    border-color: var(--stats-purple);
}

.synergy-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: .75rem;
}

.synergy-name {
    font-size: .9rem;
    font-weight: 600;
}

.synergy-bonus {
    font-size: .75rem;
    font-weight: 700;
    color: var(--stats-success);
    background: rgba(16, 185, 129, .12);
    padding: .15rem .5rem;
    border-radius: 1rem;
}

.synergy-desc {
    font-size: .75rem;
    color: var(--stats-text-muted);
    margin-bottom: .75rem;
    line-height: 1.4;
}

.synergy-avatars {
    display: flex;
    gap: -.25rem;
}

.synergy-avatars a {
    display: block;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 2px solid var(--stats-bg);
    overflow: hidden;
    margin-left: -4px;
    transition: transform .15s, z-index .15s;
    position: relative;
}

.synergy-avatars a:first-child { margin-left: 0; }

.synergy-avatars a:hover {
    transform: scale(1.2) translateY(-2px);
    z-index: 2;
    border-color: var(--stats-purple);
}

.synergy-avatars img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ---- Category Pills ---- */
.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
}

.category-pill {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem 1rem;
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: 2rem;
    text-decoration: none;
    color: var(--stats-text);
    font-size: .85rem;
    transition: background .2s, border-color .2s, transform .15s;
}

.category-pill:hover {
    background: var(--stats-bg-card-hover);
    border-color: var(--stats-accent);
    transform: translateY(-1px);
}

.category-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    background: var(--stats-accent-glow);
    color: var(--stats-accent);
    font-size: .7rem;
    font-weight: 700;
    border-radius: 1rem;
    padding: 0 .4rem;
    font-family: var(--stats-mono);
}

/* ---- Conversion Rates ---- */
.conversion-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.conversion-card {
    background: var(--stats-bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1.25rem;
}

.conversion-source {
    font-size: .8rem;
    color: var(--stats-text-muted);
    text-transform: uppercase;
    letter-spacing: .06rem;
    margin-bottom: .5rem;
}

.conversion-rates {
    display: flex;
    gap: 1.5rem;
}

.conversion-metric { flex: 1; }

.conversion-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--stats-mono);
    color: var(--stats-text);
}

.conversion-label {
    font-size: .7rem;
    color: var(--stats-text-muted);
    text-transform: uppercase;
}

/* ---- ML Quality Funnel ---- */
.ml-funnel {
    display: flex;
    flex-direction: column;
    gap: .75rem;
    margin-bottom: 1.5rem;
}

.funnel-stage {
    display: flex;
    flex-direction: column;
    gap: .25rem;
}

.funnel-bar-wrap {
    height: 28px;
    background: var(--stats-bg-card);
    border: 1px solid var(--stats-border);
    border-radius: 6px;
    overflow: hidden;
}

.funnel-bar {
    height: 100%;
    border-radius: 6px;
    min-width: 4px;
    transition: width .6s ease-out;
}

.funnel-label {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .8rem;
}

.funnel-stage-name {
    color: var(--stats-text-dim);
    min-width: 80px;
}

.funnel-stage-value {
    font-weight: 700;
    color: var(--stats-text);
    font-family: var(--stats-mono);
}

.funnel-stage-rate {
    font-size: .7rem;
    color: var(--stats-success);
    background: rgba(16, 185, 129, .12);
    padding: .1rem .45rem;
    border-radius: 1rem;
    font-weight: 600;
}

.ml-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ml-summary-item {
    text-align: center;
    padding: 1rem;
    background: var(--stats-bg-card);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
}

.ml-summary-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--stats-mono);
    color: var(--stats-accent);
}

.ml-summary-label {
    font-size: .75rem;
    color: var(--stats-text-muted);
    text-transform: uppercase;
    margin-top: .25rem;
}

.ml-top-performers {
    background: var(--stats-bg-card);
    border: 1px solid var(--stats-border);
    border-radius: var(--stats-radius);
    padding: 1.25rem;
}

.ml-top-title {
    font-size: .85rem;
    color: var(--stats-text-dim);
    text-transform: uppercase;
    letter-spacing: .06rem;
    margin-bottom: .75rem;
}

.ml-top-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem 0;
    border-bottom: 1px solid var(--stats-border);
}

.ml-top-row:last-child { border-bottom: none; }

.ml-top-name {
    flex: 1;
    font-size: .85rem;
    font-weight: 600;
    color: var(--stats-text);
}

.ml-top-ctr {
    font-size: .8rem;
    font-weight: 700;
    color: var(--stats-warning);
    font-family: var(--stats-mono);
}

.ml-top-detail {
    font-size: .7rem;
    color: var(--stats-text-muted);
    min-width: 50px;
    text-align: right;
}

/* Source comparison */
.ml-source-compare {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--stats-border);
}

.ml-source-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
}

.ml-source-name {
    min-width: 120px;
    font-size: .78rem;
    color: var(--stats-text);
    text-transform: capitalize;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ml-source-bar-wrap {
    flex: 1;
    height: 10px;
    background: var(--stats-bg-card);
    border-radius: 5px;
    overflow: hidden;
}

.ml-source-bar {
    height: 100%;
    border-radius: 5px;
    background: linear-gradient(90deg, var(--stats-accent), var(--stats-purple));
    transition: width 0.5s ease;
}

.ml-source-ctr {
    font-size: .78rem;
    font-weight: 600;
    color: var(--stats-accent);
    font-family: var(--stats-mono);
    min-width: 48px;
    text-align: right;
}

.ml-source-count {
    font-size: .7rem;
    color: var(--stats-text-muted);
    min-width: 55px;
    text-align: right;
}

@media (max-width: 600px) {
    .ml-source-name { min-width: 80px; font-size: .72rem; }
    .ml-source-ctr { min-width: 40px; }
    .ml-source-count { display: none; }
}

/* ---- Empty / Loading States ---- */
.stats-empty {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--stats-text-muted);
    font-size: .9rem;
}

.stats-loading {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--stats-text-muted);
    font-size: .85rem;
}

.stats-loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--stats-border);
    border-top-color: var(--stats-accent);
    border-radius: 50%;
    animation: stats-spin .8s linear infinite;
    margin-left: .5rem;
    vertical-align: middle;
}

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

/* ---- Footer ---- */
.stats-footer {
    text-align: center;
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--stats-border);
    color: var(--stats-text-muted);
    font-size: .85rem;
}

.stats-footer a {
    color: var(--stats-success);
    text-decoration: none;
}

.stats-footer a:hover {
    text-decoration: underline;
}

/* ---- Fade-In Animation ---- */
@keyframes stats-fade-in {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .stats-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .trending-grid,
    .seasonal-grid,
    .synergy-grid,
    .conversion-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ml-summary {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .stats-header {
        padding: 4rem 1rem 2rem;
    }

    .stats-header-nav {
        top: .75rem;
        left: .75rem;
    }

    .stats-header-right {
        top: .75rem;
        right: .75rem;
    }

    .stats-title {
        font-size: 1.5rem;
    }

    .stats-main {
        padding: 1.5rem 1rem 3rem;
    }

    .stats-metrics,
    .trending-grid,
    .seasonal-grid,
    .synergy-grid,
    .conversion-grid {
        grid-template-columns: 1fr;
    }

    .ml-summary {
        grid-template-columns: 1fr;
    }

    .metric-value {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.15rem;
    }

    .category-pills {
        gap: .5rem;
    }
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
    .metric-card,
    .stats-section {
        animation: none;
    }

    .trending-activity.hot,
    .stats-refresh-dot {
        animation: none;
        opacity: 1;
    }

    .stats-loading::after {
        animation: none;
    }
}