:root {
    --bg-main: #000000;
    --bg-card: #181b26;
    --bg-plane: #14161e;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    
    --seat-empty: #2e344a;
    --seat-seated: #10b981;
    --aisle-bg: #1c1f2e;
    
    --pax-moving: #0ea5e9;
    --pax-stowing: #f59e0b;
    --pax-waiting: #ef4444;
    
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    
    --border-rad: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    margin: 0;
}

/* Topbar & Controls */
.sidebar {
    width: 100%;
    background-color: var(--bg-card);
    padding: 16px 24px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 24px;
    overflow-y: visible;
    border-bottom: 1px solid #2e344a;
    border-right: none;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    z-index: 10;
}

.sidebar-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.mobile-toggle:hover {
    background: rgba(255,255,255,0.1);
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 2px;
}

.logo p {
    font-size: 13px;
    color: var(--text-muted);
}

.dashboard {
    display: flex;
    flex-direction: row;
    /* flex-wrap: wrap; */
    justify-content: center;
    gap: 12px;
    margin: auto auto 24px auto;
}

.stat-card {
    background: var(--bg-card);
    padding: 8px 12px;
    border-radius: var(--border-rad);
    display: flex;
    flex-direction: column;
    border: 1px solid #2e344a;
    min-width: 120px;
    text-align: center;
}

.stat-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #2e344a;
    border-radius: 3px;
    margin-top: 8px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: var(--seat-seated);
    transition: width 0.3s ease;
}

.controls {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-left: 0;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 140px;
}

.control-group label {
    font-size: 12px;
    font-weight: 500;
}

select, input[type="range"] {
    width: 100%;
    margin-top: 5px;
    padding: 6px;
    background: var(--bg-main);
    border: 1px solid #2e344a;
    border-radius: 4px;
    color: #fff;
    font-family: inherit;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    padding: 0;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.range-value {
    text-align: right;
    font-size: 12px;
    color: var(--text-muted);
}

.action-buttons {
    display: flex;
    gap: 8px;
    margin-top: 0;
    align-items: center;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    font-family: inherit;
}
.btn:hover { opacity: 0.9; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: white; }
.btn-secondary { background: #4b5563; color: white; }
.btn-danger { background: #ef4444; color: white; }

/* Legend */
.legend {
    margin-top: 0;
    background: var(--bg-card);
    padding: 10px;
    border: none;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    width: 100%;
    justify-content: center;
    border-top: 1px solid #2e344a;
}
.legend h3 {
    font-size: 14px;
    margin-bottom: 0;
    color: var(--text-muted);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 0;
    font-size: 10px;
    color: var(--text-main);
}
.blob {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}
.blob.empty-seat { background: var(--seat-empty); }
.blob.seated { background: var(--seat-seated); border-radius: 50%; }
.blob.moving { background: var(--pax-moving); border-radius: 50%; }
.blob.stowing { background: var(--pax-stowing); border-radius: 50%; }
.blob.waiting { background: var(--pax-waiting); border-radius: 50%; }


/* Simulation Area */
.simulation-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    background-color: var(--bg-main);
    position: relative;
    padding: 40px;
    overflow-x: auto;
    overflow-y: auto;
}

.plane-wrapper {
    background: var(--bg-plane);
    padding: 20px 40px;
    border-radius: 40px 10px 10px 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border: 2px solid #2e344a;
    margin: 0 auto auto auto;
}

.plane-body {
    display: grid;
    grid-template-columns: repeat(30, 24px);
    grid-template-rows: repeat(3, 24px) 32px repeat(3, 24px);
    grid-auto-flow: column;
    gap: 4px;
    position: relative;
}

.cell {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.seat {
    background-color: var(--seat-empty);
    border-radius: 4px;
    transition: background-color 0.2s;
}

.seat.occupied {
    background-color: var(--seat-seated);
}

.aisle {
    background-color: transparent;
}

/* Passenger Representation */
.passenger {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    z-index: 5;
    transition: left var(--tick-speed, 100ms) linear, top var(--tick-speed, 100ms) linear;
}

.pax-moving { background-color: var(--pax-moving); }
.pax-stowing { 
    background-color: var(--pax-stowing); 
    transform: translate(-50%, -50%) scale(1.1);
    z-index: 10;
}
.pax-stowing::after {
    content: '🧳';
    position: absolute;
    top: 30%;
    left: 65%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    z-index: 11;
}
.pax-waiting { background-color: var(--pax-waiting); }
.pax-seated { 
    background-color: transparent; 
    border: 2px solid rgba(255,255,255,0.8);
    width: 14px;
    height: 14px;
}

/* Indicators */
.row-label {
    position: absolute;
    top: -17px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: var(--text-muted);
}

/* Spooky Mode Overrides */
body.spooky-mode .passenger {
    background-color: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    background-image: url('assets/spik-normal.png');
    background-size: cover;
    background-position: center;
    box-shadow: none !important;
    width: 30px;
    height: 30px;
}

body.spooky-mode .passenger.pax-waiting {
    background-image: url('assets/spik-blocked.png');
}

body.spooky-mode .passenger.pax-seated {
    width: 20px;
    height: 20px;
    opacity: 0.6;
}

body.spooky-mode .pax-stowing::after {
    content: '🎃';
    top: 0%;
    left: 60%;
}

/* ---------- Responsive Design ---------- */

@media (max-width: 1100px) {
    .sidebar {
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        gap: 20px;
    }
    
    .spacer, .sidebar div[style="flex-grow: 1;"] {
        display: none;
    }
    
    .sidebar-top {
        justify-content: center;
    }
    
    .logo {
        align-items: center;
        text-align: center;
    }
    
    .controls {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 16px 24px;
        width: 100%;
        margin-left: 0;
    }
    
    .control-group {
        width: 100%;
        min-width: 0;
    }
    
    .controls .control-group:nth-child(5) {
        justify-content: flex-start;
        margin-top: 0 !important;
    }
    
    .action-buttons {
        grid-column: 1 / -1;
        display: flex;
        justify-content: center;
        width: 100%;
        gap: 12px;
        margin-top: 8px;
    }
    
    .action-buttons .btn {
        flex: 1;
        max-width: 200px;
        padding: 10px 0;
    }
}

@media (max-width: 800px) {
    .sidebar {
        padding: 16px;
    }

    .sidebar-top {
        justify-content: space-between;
    }

    .logo {
        align-items: flex-start;
        text-align: left;
    }

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

    .controls {
        display: none; /* Collapsed by default */
    }
    
    .controls.active {
        display: flex; /* Active via JS */
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .controls .control-group:nth-child(5) {
        justify-content: flex-start;
    }
    
    .action-buttons {
        display: flex;
        grid-column: 1 / -1;
        gap: 8px;
        margin-top: 4px;
    }
    
    .action-buttons .btn {
        max-width: none;
        padding: 12px 0;
    }

    /* Vertical Plane UI */
    .simulation-area {
        padding: 20px;
        align-items: center;
    }

    .plane-wrapper {
        border-radius: 40px 40px 10px 10px;
        padding: 40px 20px;
        margin: 0;
    }

    .plane-body {
        grid-template-columns: repeat(3, 24px) 32px repeat(3, 24px);
        grid-template-rows: repeat(30, 24px);
        grid-auto-flow: row;
    }

    .row-label {
        top: 50%;
        left: -18px;
        transform: translateY(-50%);
    }

    .dashboard {
        flex-wrap: wrap;
    }
}