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

:root {
    --font-sans: 'Roboto Condensed', 'Arial Narrow', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Roboto Condensed', 'Arial Narrow', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --bg-dark: #0b1118;
    --bg-panel: #101823;
    --bg-card: #151f2b;
    --border-color: #263246;
    --border-glow: rgba(74, 163, 255, 0.4);
    --text-primary: #d7e0ee;
    --text-secondary: #9fb0c7;
    --text-dim: #6f7f94;
    --accent-cyan: #4aa3ff;
    --accent-green: #38c180;
    --accent-amber: #d6a85e;
    --grid-line: rgba(74, 163, 255, 0.1);
    --noise-image: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='40'%20height='40'%20viewBox='0%200%2040%2040'%3E%3Cg%20fill='%23ffffff'%20fill-opacity='0.05'%3E%3Ccircle%20cx='3'%20cy='5'%20r='1'/%3E%3Ccircle%20cx='11'%20cy='9'%20r='1'/%3E%3Ccircle%20cx='18'%20cy='3'%20r='1'/%3E%3Ccircle%20cx='26'%20cy='12'%20r='1'/%3E%3Ccircle%20cx='34'%20cy='6'%20r='1'/%3E%3Ccircle%20cx='7'%20cy='19'%20r='1'/%3E%3Ccircle%20cx='15'%20cy='24'%20r='1'/%3E%3Ccircle%20cx='28'%20cy='22'%20r='1'/%3E%3Ccircle%20cx='36'%20cy='18'%20r='1'/%3E%3Ccircle%20cx='5'%20cy='33'%20r='1'/%3E%3Ccircle%20cx='19'%20cy='32'%20r='1'/%3E%3Ccircle%20cx='31'%20cy='34'%20r='1'/%3E%3C/g%3E%3C/svg%3E");
}

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

.mono {
    font-family: var(--font-mono);
}

.radar-bg {
    position: fixed;
    inset: 0;
    background-image:
        var(--noise-image),
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px, 50px 50px, 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.scanline {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    color: var(--accent-cyan);
    animation: scan 6s linear infinite;
    pointer-events: none;
    z-index: 1;
    opacity: 0.25;
    box-shadow: 0 0 8px currentColor;
}

@keyframes scan {
    0% { top: -4px; }
    100% { top: 100vh; }
}

.header {
    position: relative;
    z-index: 2;
    padding: 12px 20px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.header::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.6;
    pointer-events: none;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.logo span {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 12px;
    margin-left: 10px;
    letter-spacing: 1px;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
}

.back-link {
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 11px;
    padding: 6px 12px;
    border: 1px solid var(--accent-cyan);
    border-radius: 4px;
}

.history-shell {
    position: relative;
    z-index: 2;
    padding: 16px 18px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.summary-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.session-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
    align-items: center;
    background: linear-gradient(120deg, rgba(15, 18, 24, 0.95), rgba(20, 26, 36, 0.95));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: 0 0 18px rgba(0, 0, 0, 0.35);
}

.session-status {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-dim);
    box-shadow: 0 0 12px rgba(75, 85, 99, 0.6);
}

.status-dot.active {
    background: var(--accent-green);
    box-shadow: 0 0 14px rgba(34, 197, 94, 0.8);
}

.session-label {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.session-value {
    font-size: 14px;
    font-weight: 600;
}

.session-metric {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

#sessionNotice {
    color: var(--accent-cyan);
}

.session-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: flex-end;
}

.session-controls select {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 12px;
    min-width: 180px;
}

.primary-btn.stop {
    background: var(--accent-amber);
    color: #0a0c10;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 16px;
    box-shadow: 0 0 14px rgba(0, 0, 0, 0.3);
}

.summary-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.3px;
    margin-bottom: 6px;
}

.summary-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: flex-end;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 16px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.control-group input,
.control-group select {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 12px;
    min-width: 160px;
}

.primary-btn {
    background: var(--accent-cyan);
    border: none;
    color: #0a0c10;
    font-weight: 600;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(74, 158, 255, 0.3);
}

.status-pill {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--accent-amber);
    color: var(--accent-amber);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(320px, 1fr);
    gap: 16px;
}

.panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    min-height: 420px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.panel-meta {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent-cyan);
}

.panel-body {
    padding: 12px 14px;
    flex: 1;
    overflow: auto;
}

.aircraft-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.aircraft-table th,
.aircraft-table td {
    padding: 8px 6px;
    border-bottom: 1px solid rgba(31, 41, 55, 0.6);
    text-align: left;
}

.aircraft-table th {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.aircraft-row {
    cursor: pointer;
    transition: background 0.15s ease;
}

.aircraft-row:hover {
    background: rgba(74, 158, 255, 0.1);
}

.mono {
    font-family: var(--font-mono);
}

.empty-row td,
.empty-row {
    color: var(--text-dim);
    text-align: center;
    padding: 18px 10px;
}

.detail-card {
    padding: 12px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 12px;
}

.detail-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
}

.detail-meta {
    color: var(--text-secondary);
    font-size: 12px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px;
    height: 180px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.chart-title {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

#altitudeChart {
    width: 100%;
    height: 100%;
}

#speedChart,
#headingChart,
#verticalChart {
    width: 100%;
    height: 100%;
}

.timeline-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.timeline-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 10px;
    border: 1px solid rgba(31, 41, 55, 0.6);
    border-radius: 6px;
    background: rgba(15, 18, 24, 0.6);
}

.squawk-list {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    color: var(--text-secondary);
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(5, 8, 15, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 50;
}

.modal-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 18px;
    width: min(820px, 92vw);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    position: relative;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 14px;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 4px;
}

.modal-actions {
    display: flex;
    gap: 8px;
}

.nav-btn {
    background: rgba(74, 158, 255, 0.15);
    border: 1px solid rgba(74, 158, 255, 0.4);
    color: var(--accent-cyan);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 16px;
}

.modal-photo {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.modal-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.photo-fallback {
    color: var(--text-dim);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.modal-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 18px;
    font-size: 12px;
}

.detail-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px 10px;
    background: rgba(20, 26, 36, 0.6);
    border-radius: 8px;
    border: 1px solid rgba(31, 41, 55, 0.6);
}

.detail-row span {
    color: var(--text-secondary);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.detail-row strong {
    font-size: 13px;
}

@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .modal-body {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .control-group input,
    .control-group select {
        min-width: 100%;
    }

    .panel {
        min-height: 320px;
    }

    .session-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .modal-card {
        padding: 16px;
    }

    .modal-details {
        grid-template-columns: 1fr;
    }
}