/* ============================
   Fantasy Football Analytics
   Dark Theme Design System
   ============================ */

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a2235;
    --bg-card-hover: #1f2a3f;
    --bg-elevated: rgba(30, 41, 69, 0.8);
    --border: #2a3550;
    --border-light: #344063;

    --text-primary: #f0f4ff;
    --text-secondary: #8b99b8;
    --text-muted: #5a6a8a;

    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --green: #22c55e;
    --green-bg: rgba(34, 197, 94, 0.12);
    --yellow: #f59e0b;
    --yellow-bg: rgba(245, 158, 11, 0.12);
    --red: #ef4444;
    --red-bg: rgba(239, 68, 68, 0.12);
    --blue: #3b82f6;
    --blue-bg: rgba(59, 130, 246, 0.12);
    --cyan: #06b6d4;
    --purple: #a855f7;

    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

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

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

#app {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Header ---- */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
}

.header-left { display: flex; align-items: center; gap: 16px; }

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon { font-size: 28px; }

.logo h1 {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo .accent { color: var(--accent); }

.tagline {
    font-size: 13px;
    color: var(--text-muted);
    padding-left: 16px;
    border-left: 1px solid var(--border);
}

.data-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--bg-card);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.badge-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--yellow);
    animation: pulse 2s infinite;
}

.badge-dot.ready { background: var(--green); animation: none; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ---- Tab Navigation ---- */
.tab-nav {
    display: flex;
    gap: 4px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
}

.tab-icon { font-size: 16px; }

/* ---- Tab Content ---- */
.tab-content { padding: 24px 0; }

.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 4px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ---- Controls Bar ---- */
.controls-bar {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-group label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.filter-group select,
.search-input {
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 13px;
    cursor: pointer;
    transition: border-color var(--transition);
    outline: none;
}

.filter-group select:hover,
.search-input:hover { border-color: var(--border-light); }

.filter-group select:focus,
.search-input:focus { border-color: var(--accent); }

.search-input.large {
    padding: 12px 18px;
    font-size: 15px;
}

/* ---- Correlation Grid ---- */
.correlation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}

.corr-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.corr-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.corr-card.selected {
    border-color: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

.corr-card .stat-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 8px;
}

.corr-card .corr-value {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -1px;
}

.corr-card .corr-bar {
    height: 4px;
    border-radius: 2px;
    margin-top: 10px;
    background: var(--border);
    overflow: hidden;
}

.corr-card .corr-bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.corr-positive { color: var(--green); }
.corr-negative { color: var(--red); }
.corr-neutral { color: var(--yellow); }

/* ---- Chart Container ---- */
.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 16px;
}

.chart-container h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.chart-container canvas {
    max-height: 450px;
}

/* ---- QB Bust Indicator ---- */
.bust-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.bust-stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.bust-stat-card .card-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.bust-stat-card .card-value {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -1px;
}

.bust-stat-card .card-sub {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.bust-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.bust-list {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.bust-list h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.bust-player {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-xs);
    margin-bottom: 4px;
    font-size: 13px;
    transition: background var(--transition);
}

.bust-player:hover { background: var(--bg-elevated); }

.bust-player .name { font-weight: 500; }
.bust-player .team { color: var(--text-muted); font-size: 12px; }
.bust-player .values { display: flex; gap: 16px; }
.bust-player .val {
    font-weight: 600;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
}

.val.danger { background: var(--red-bg); color: var(--red); }
.val.safe { background: var(--green-bg); color: var(--green); }
.val.warn { background: var(--yellow-bg); color: var(--yellow); }

/* ---- Data Table ---- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    background: var(--bg-card);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition: color var(--transition);
}

.data-table th:hover { color: var(--text-primary); }
.data-table th.num { text-align: right; }
.data-table th.sorted-asc::after { content: ' ▲'; color: var(--accent); }
.data-table th.sorted-desc::after { content: ' ▼'; color: var(--accent); }

.data-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.data-table td.num { text-align: right; font-variant-numeric: tabular-nums; }

.data-table tbody tr {
    transition: background var(--transition);
}

.data-table tbody tr:hover { background: var(--bg-card-hover); }

.valuation-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.valuation-badge.undervalued { background: var(--green-bg); color: var(--green); }
.valuation-badge.fair { background: var(--yellow-bg); color: var(--yellow); }
.valuation-badge.overvalued { background: var(--red-bg); color: var(--red); }

/* ---- Rookie Predictor ---- */
.rookie-benchmarks {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.benchmark-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.benchmark-card h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.benchmark-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    font-size: 13px;
}

.benchmark-row .label { color: var(--text-secondary); }
.benchmark-row .value { font-weight: 600; }

.rookie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.rookie-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all var(--transition);
}

.rookie-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.rookie-card .player-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 2px;
}

.rookie-card .player-meta {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.rookie-card .score-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.rookie-card .score-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.8s ease;
}

.rookie-card .score-label {
    font-size: 12px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
}

.rookie-card .metrics-list {
    margin-top: 12px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.rookie-metric {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    padding: 4px 8px;
    background: var(--bg-elevated);
    border-radius: var(--radius-xs);
}

.rookie-metric .m-label { color: var(--text-muted); }
.rookie-metric .m-value { font-weight: 600; }

/* ---- Player Deep Dive ---- */
.player-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
    margin-bottom: 16px;
}

.player-result-btn {
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
    text-align: left;
}

.player-result-btn:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.player-result-btn .pos {
    font-size: 11px;
    color: var(--text-muted);
}

.player-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.player-header .ph-name {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.player-header .ph-meta {
    font-size: 14px;
    color: var(--text-secondary);
}

.player-header .ph-dynasty {
    margin-left: auto;
    text-align: right;
}

.player-header .ph-dynasty .dynasty-val {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
}

.player-header .ph-dynasty .dynasty-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.player-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.metric-card .mc-name {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.metric-card .mc-values {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.metric-card .mc-year {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metric-card .mc-year .yr {
    font-size: 10px;
    color: var(--text-muted);
}

.metric-card .mc-year .val {
    font-size: 16px;
    font-weight: 700;
}

/* ---- Loading Overlay ---- */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 26, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.4s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 48px; height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

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

.loading-spinner p {
    font-size: 16px;
    font-weight: 600;
}

.loading-sub {
    font-size: 13px !important;
    color: var(--text-muted) !important;
    font-weight: 400 !important;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    #app { padding: 0 12px; }
    .app-header { flex-direction: column; gap: 12px; align-items: flex-start; }
    .tagline { display: none; }
    .bust-grid { grid-template-columns: 1fr; }
    .tab-btn .tab-label { display: none; }
    .tab-btn .tab-icon { font-size: 20px; }
}