:root {
    --bg-dark: #0b0e14;
    --panel-bg: rgba(18, 24, 38, 0.88);
    --panel-border: rgba(0, 243, 255, 0.3);
    --accent-cyan: #00ffff;
    --accent-pink: #ff007f;
    --accent-glow: rgba(0, 255, 255, 0.5);
    --text-main: #f0f4f8;
    --text-dim: #94a3b8;
}

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

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
}

#map {
    width: 100%;
    height: 100%;
    z-index: 1;
    background: var(--bg-dark);
}

/* Glassmorphic UI Overlay */
.hud-header {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    padding: 10px 18px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.hud-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #ffffff, var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-family: 'Inter', sans-serif;
    background: rgba(255, 0, 127, 0.2);
    color: #ff007f;
    border: 1px solid rgba(255, 0, 127, 0.4);
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
}

.live-dot {
    width: 6px;
    height: 6px;
    background-color: #ff007f;
    border-radius: 50%;
    animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 0, 127, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(255, 0, 127, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(255, 0, 127, 0); }
}

/* Telemetry Dashboard */
.hud-dashboard {
    position: absolute;
    top: 76px;
    left: 16px;
    z-index: 1000;
    width: 330px;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    transition: all 0.3s ease;
}

.telemetry-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 14px;
}

.telemetry-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 10px;
}

.card-label {
    font-size: 0.68rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.card-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--accent-cyan);
    word-break: break-all;
}

.card-unit {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-weight: normal;
}

/* Simulator Controls */
.sim-controls {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 14px;
}

.sim-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.datetime-input-group {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}

input[type="datetime-local"] {
    flex: 1;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--panel-border);
    color: var(--text-main);
    padding: 8px 10px;
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    outline: none;
}

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

.btn {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.3), rgba(0, 119, 255, 0.5));
    border: 1px solid var(--accent-cyan);
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn:hover {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.5), rgba(0, 119, 255, 0.75));
    box-shadow: 0 0 14px var(--accent-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    box-shadow: none;
}

.btn-active {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.4), rgba(0, 119, 255, 0.7)) !important;
    border-color: var(--accent-cyan) !important;
    box-shadow: 0 0 12px var(--accent-glow) !important;
}

.control-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

/* Map Legend Panel */
.hud-legend {
    position: absolute;
    bottom: 24px;
    right: 16px;
    z-index: 1000;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.78rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.legend-color {
    width: 22px;
    height: 5px;
    border-radius: 2px;
}

/* Toggle Panel Button for Mobile */
.hud-toggle-btn {
    display: none;
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 1001;
    width: 42px;
    height: 42px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    color: var(--accent-cyan);
    font-size: 1.2rem;
    cursor: pointer;
    backdrop-filter: blur(16px);
}

/* Responsive Breakpoints */
@media (max-width: 640px) {
    .hud-dashboard {
        width: calc(100% - 32px);
        max-height: 70vh;
        overflow-y: auto;
    }

    .hud-dashboard.collapsed {
        display: none;
    }

    .hud-toggle-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hud-header {
        max-width: calc(100% - 80px);
        padding: 8px 12px;
    }

    .hud-title {
        font-size: 0.9rem;
    }

    .hud-legend {
        bottom: 16px;
        right: 16px;
        font-size: 0.72rem;
    }
}

/* Custom Leaflet Dark Theme Overrides & Map Tile Brightness */
.leaflet-container {
    background-color: var(--bg-dark) !important;
}

.leaflet-tile-pane {
    filter: brightness(2.1) contrast(1.15) saturate(1.1);
}

.leaflet-control-zoom {
    border: 1px solid var(--panel-border) !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.6) !important;
    border-radius: 8px !important;
    overflow: hidden;
}

.leaflet-control-zoom a {
    background: var(--panel-bg) !important;
    color: var(--accent-cyan) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.leaflet-control-zoom a:hover {
    background: rgba(0, 243, 255, 0.25) !important;
}

.leaflet-popup-content-wrapper {
    background: var(--panel-bg) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    color: var(--text-main) !important;
    border-radius: 10px !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7) !important;
}

.leaflet-popup-tip {
    background: var(--panel-bg) !important;
}

.iss-icon-glow {
    filter: drop-shadow(0 0 12px #00ffff);
    transition: transform 0.5s linear;
}

.orbit-marker-badge {
    background: rgba(0, 243, 255, 0.9);
    color: #0b0e14;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.8);
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #ffffff;
}