/* circuit board flight map - pcb dark theme */

:root {
    --pcb-black: #0a0a0a;
    --pcb-dark: #111111;
    --pcb-green: #00ff41;
    --pcb-cyan: #00ffff;
    --pcb-amber: #ffaa00;
    --pcb-red: #ff0040;
    --pcb-purple: #ff00ff;
    --pcb-blue: #4080ff;
    --pcb-gray: #333333;
    --pcb-light-gray: #666666;
    --grid-size: 16px;
}

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

body {
    font-family: 'courier new', monospace;
    background: var(--pcb-black);
    color: var(--pcb-green);
    font-size: 14px;
    line-height: 1.4;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* header styles */
.header {
    background: var(--pcb-dark);
    border-bottom: 1px solid var(--pcb-green);
    padding: 1rem 2rem;
    text-align: center;
}

.title {
    font-size: 24px;
    color: var(--pcb-cyan);
    text-transform: lowercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--pcb-light-gray);
    font-size: 12px;
}

/* main content layout */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1px;
    background: var(--pcb-green);
}

.map-container {
    background: var(--pcb-black);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--pcb-green);
    cursor: grab;
}

.map-container.panning {
    cursor: grabbing;
}

.map-container.zooming {
    cursor: zoom-in;
}



.controls-panel {
    background: var(--pcb-dark);
    padding: 1.5rem;
    border-left: 1px solid var(--pcb-green);
    overflow-y: auto;
}

/* svg map styles */
.flight-map {
    width: 100%;
    height: 100%;
    display: block;
    background: var(--pcb-black);
    user-select: none;
}

/* zoom controls */
.zoom-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 10;
}

.zoom-btn {
    width: 32px;
    height: 32px;
    background: var(--pcb-dark);
    border: 1px solid var(--pcb-green);
    color: var(--pcb-green);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.2s ease;
}

.zoom-btn:hover {
    background: var(--pcb-green);
    color: var(--pcb-black);
}

.zoom-btn:active {
    background: var(--pcb-cyan);
}

.zoom-info {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background: var(--pcb-dark);
    border: 1px solid var(--pcb-green);
    padding: 8px 12px;
    font-size: 11px;
    color: var(--pcb-light-gray);
    pointer-events: none;
    font-family: inherit;
}

/* country outlines */
.country {
    fill: none;
    stroke: var(--pcb-green);
    opacity: 0.6;
}

.country:hover {
    opacity: 0.8;
}

/* flight lines */
.flight-line {
    fill: none;
    stroke: var(--pcb-cyan);
    opacity: 0.8;
}

.flight-line:hover {
    stroke: var(--pcb-amber);
    opacity: 1.0;
}

/* airport dots */
.airport-dot {
    fill: var(--pcb-green);
    stroke: var(--pcb-cyan);
    stroke-width: 1px;
}

.airport-dot:hover {
    fill: var(--pcb-amber);
}

/* railway lines */
.railway-line {
    fill: none;
    stroke: var(--pcb-purple);
    opacity: 0.8;
    stroke-dasharray: 3, 2;
}

.railway-line:hover {
    stroke: var(--pcb-blue);
    opacity: 1.0;
}

.railway-line.high-speed {
    stroke: var(--pcb-blue);
    stroke-dasharray: none;
    stroke-width: 2;
}

.railway-line.high-speed:hover {
    stroke: var(--pcb-cyan);
}

/* railway stations */
.railway-station {
    fill: var(--pcb-purple);
    stroke: var(--pcb-blue);
    stroke-width: 1px;
}

.railway-station:hover {
    fill: var(--pcb-blue);
}

.railway-station.high-speed {
    fill: var(--pcb-blue);
    stroke: var(--pcb-cyan);
}

/* grid overlay for debugging */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0.15;
    background-image: 
        linear-gradient(90deg, var(--pcb-green) 1px, transparent 1px),
        linear-gradient(var(--pcb-green) 1px, transparent 1px);
    background-size: 4px 4px;
    transition: background-size 0.1s ease;
}

/* transport tabs */
.transport-tabs {
    display: flex;
    margin-bottom: 1rem;
    border: 1px solid var(--pcb-gray);
    background: var(--pcb-black);
}

.tab-btn {
    flex: 1;
    padding: 10px;
    background: var(--pcb-dark);
    border: none;
    color: var(--pcb-light-gray);
    cursor: pointer;
    font-family: inherit;
    font-size: 12px;
    text-transform: lowercase;
    transition: all 0.2s ease;
}

.tab-btn.active {
    background: var(--pcb-green);
    color: var(--pcb-black);
}

.tab-btn:not(.active):hover {
    background: var(--pcb-gray);
    color: var(--pcb-green);
}

/* transport forms */
.transport-form {
    border: 1px solid var(--pcb-gray);
    padding: 1rem;
    margin-bottom: 1.5rem;
    background: var(--pcb-black);
    display: none;
}

.transport-form.active {
    display: block;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    color: var(--pcb-light-gray);
    margin-bottom: 4px;
    font-size: 12px;
    text-transform: lowercase;
}

.input-group input {
    width: 100%;
    padding: 8px 12px;
    background: var(--pcb-dark);
    border: 1px solid var(--pcb-gray);
    color: var(--pcb-green);
    font-family: inherit;
    font-size: 14px;
    text-transform: uppercase;
}

.input-group input:focus {
    outline: none;
    border-color: var(--pcb-cyan);
    box-shadow: 0 0 0 1px var(--pcb-cyan);
}

.input-group input::placeholder {
    color: var(--pcb-light-gray);
    opacity: 0.7;
}

.add-btn {
    width: 100%;
    padding: 10px;
    background: var(--pcb-green);
    color: var(--pcb-black);
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    text-transform: lowercase;
    font-weight: bold;
}

.add-btn:hover {
    background: var(--pcb-cyan);
}

.add-btn:active {
    background: var(--pcb-amber);
}

/* transport lists */
.transport-list-container {
    margin-bottom: 1.5rem;
    display: none;
}

.transport-list-container.active {
    display: block;
}

.transport-list-title {
    color: var(--pcb-cyan);
    font-size: 16px;
    margin-bottom: 0.5rem;
    text-transform: lowercase;
}

.transport-list {
    border: 1px solid var(--pcb-gray);
    background: var(--pcb-black);
    max-height: 200px;
    overflow-y: auto;
}

.transport-item,
.flight-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--pcb-gray);
}

.transport-item:last-child,
.flight-item:last-child {
    border-bottom: none;
}

.transport-route,
.flight-route {
    color: var(--pcb-green);
    font-size: 12px;
    flex: 1;
}

.railway-item .transport-route {
    color: var(--pcb-purple);
}

.remove-btn {
    background: var(--pcb-red);
    color: var(--pcb-black);
    border: none;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-family: inherit;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-btn:hover {
    background: var(--pcb-amber);
}

/* instructions */
.instructions {
    border: 1px solid var(--pcb-gray);
    padding: 1rem;
    background: var(--pcb-black);
}

.instructions h4 {
    color: var(--pcb-cyan);
    font-size: 14px;
    margin-bottom: 0.5rem;
    text-transform: lowercase;
}

.instructions ul {
    list-style: none;
    color: var(--pcb-light-gray);
}

.instructions li {
    font-size: 12px;
    margin-bottom: 4px;
    position: relative;
    padding-left: 12px;
}

.instructions li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--pcb-green);
}

.reference-codes {
    margin-top: 1rem;
}

.code-section {
    margin-bottom: 1rem;
}

.code-section summary {
    color: var(--pcb-cyan);
    cursor: pointer;
    font-size: 12px;
    margin-bottom: 0.5rem;
}

.codes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
    font-size: 11px;
    color: var(--pcb-light-gray);
    margin-top: 0.5rem;
}

.codes-grid div {
    text-transform: lowercase;
}

/* footer */
.footer {
    background: var(--pcb-dark);
    border-top: 1px solid var(--pcb-green);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--pcb-light-gray);
    font-size: 11px;
}

.footer p {
    margin-bottom: 4px;
}

/* responsive design */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }
    
    .controls-panel {
        border-left: none;
        border-top: 1px solid var(--pcb-green);
        max-height: 300px;
    }
    
    .header {
        padding: 1rem;
    }
    
    .title {
        font-size: 20px;
    }
}

/* custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--pcb-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--pcb-gray);
    border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--pcb-green);
}

/* selection styles */
::selection {
    background: var(--pcb-green);
    color: var(--pcb-black);
}

/* focus styles for accessibility */
button:focus,
input:focus,
summary:focus {
    outline: 2px solid var(--pcb-cyan);
    outline-offset: 2px;
}