/* Drop Ceiling — Report Viewer Styles */
/* Matches design language from public-viewer/style.css */

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

:root {
    --bg-color: #0a0a0c;
    --text-color: #ffffff;
    --text-muted: #666666;
    --accent-color: #4a9eff;
    --panel-bg: rgba(20, 20, 25, 0.9);
    --input-engaged: #ffaa44;
    --input-passing: #66ee88;
    --output-avg: #7cd3ff;
    --output-band: rgba(124, 211, 255, 0.25);
    --flow-rtl: rgba(255, 140, 100, 0.85);
    --delta-up: rgba(100, 255, 180, 0.85);
    --delta-down: rgba(255, 140, 100, 0.85);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.45);
}

html, body {
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* =============================================================================
   TOP NAVIGATION
   ============================================================================= */

#top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: linear-gradient(to bottom, var(--bg-color) 60%, rgba(10, 10, 12, 0.95) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-left {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.nav-left h1 {
    font-size: 20px;
    font-weight: 300;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: var(--text-color);
    opacity: 0.9;
}

.nav-separator {
    font-size: 16px;
    font-weight: 300;
    color: var(--text-muted);
    opacity: 0.5;
}

.nav-section {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-link {
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border-medium);
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--text-color);
    border-color: rgba(255, 255, 255, 0.3);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border-medium);
    border-radius: 999px;
    padding: 6px 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    color: var(--text-color);
    border-color: rgba(255, 255, 255, 0.3);
}

/* =============================================================================
   CONTROLS — VIEW TOGGLE + DATE NAV
   ============================================================================= */

#controls {
    position: sticky;
    top: 57px;
    z-index: 90;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: rgba(10, 10, 12, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
}

.view-toggle {
    display: flex;
    flex-shrink: 0;
    border-radius: 999px;
    border: 1px solid var(--border-medium);
    overflow: hidden;
}

.toggle-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    background: none;
    border: none;
    padding: 6px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.toggle-btn.active {
    background: var(--accent-color);
    color: var(--bg-color);
    font-weight: 500;
}

#date-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.date-arrow {
    flex-shrink: 0;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 18px;
    font-weight: 300;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border-medium);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1;
}

.date-arrow:hover {
    color: var(--text-color);
    border-color: rgba(255, 255, 255, 0.3);
}

#date-pills {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 2px 0;
    flex: 1;
}

#date-pills::-webkit-scrollbar {
    display: none;
}

.date-pill {
    flex-shrink: 0;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 10px;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--text-muted);
    background: none;
    border: 1px solid var(--border-medium);
    border-radius: 999px;
    padding: 4px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.date-pill:hover {
    color: var(--text-color);
    border-color: rgba(255, 255, 255, 0.3);
}

.date-pill.active {
    background: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
    font-weight: 500;
}

.date-pill.weekend {
    border-color: rgba(255, 170, 68, 0.3);
}

.date-pill.weekend.active {
    background: var(--input-engaged);
    border-color: var(--input-engaged);
}

.week-sep {
    flex-shrink: 0;
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.12);
    margin: 0 4px;
}

/* =============================================================================
   SUMMARY CARDS
   ============================================================================= */

.card-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    padding: 16px 20px 8px;
}

.summary-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    background: rgba(18, 20, 26, 0.8);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
}

.card-label {
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.card-value {
    font-size: 22px;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--text-color);
    font-variant-numeric: tabular-nums;
}

/* =============================================================================
   CHART PANELS
   ============================================================================= */

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 8px 20px 24px;
}

.chart-panel {
    background: rgba(18, 20, 26, 0.8);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chart-panel.wide {
    grid-column: 1 / -1;
}

.chart-panel.small {
    /* keep default size */
}

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

.panel-label {
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
}

.panel-legend-inline {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-left: auto;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 9px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.legend-dot.engaged {
    background: var(--input-engaged);
}

.legend-dot.passing {
    background: var(--input-passing);
}

.export-chart-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.panel-legend-inline + .export-chart-btn {
    margin-left: 0;
}

.export-chart-btn:hover {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.08);
}

.chart-container {
    position: relative;
    width: 100%;
    height: 180px;
}

.chart-container.tall {
    height: 260px;
}

.chart-container.square {
    height: 180px;
    max-width: 220px;
    margin: 0 auto;
}

/* Behavior Modes layout: donut + legend side by side */
.modes-layout {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.modes-layout .chart-container.square {
    flex-shrink: 0;
}

.modes-legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
}

.legend-label {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.legend-value {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-color);
    margin-left: auto;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* Tuning panel extras */
.tuning-badge {
    font-size: 8px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--delta-up);
    background: rgba(100, 255, 180, 0.1);
    padding: 2px 8px;
    border-radius: 999px;
}

.tuning-strategy {
    font-size: 9px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.45);
    letter-spacing: 0.5px;
    padding-top: 4px;
    border-top: 1px solid var(--border-subtle);
}

/* Heatmap container needs more height */
#heatmap-container {
    height: 240px;
    overflow: hidden;
}

/* =============================================================================
   LOADING
   ============================================================================= */

#loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 12, 0.95);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
}

#loading.hidden {
    display: none;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-medium);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* =============================================================================
   HIDDEN UTILITY
   ============================================================================= */

.hidden {
    display: none !important;
}

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

@media (min-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

@media (max-width: 768px) {
    #top-nav {
        padding: 12px 14px;
    }

    .nav-left h1 {
        font-size: 16px;
        letter-spacing: 4px;
    }

    .nav-section {
        font-size: 12px;
        letter-spacing: 2px;
    }

    #export-page-btn span {
        display: none;
    }

    #controls {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        top: 49px;
    }

    .card-row {
        grid-template-columns: repeat(3, 1fr);
        padding: 12px 14px 6px;
    }

    .card-value {
        font-size: 18px;
    }

    .charts-grid {
        grid-template-columns: 1fr;
        padding: 6px 14px 20px;
    }
}

@media (max-width: 480px) {
    .card-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-right .nav-link {
        display: none;
    }

    .chart-container {
        height: 160px;
    }

    .chart-container.tall {
        height: 220px;
    }
}