:root {
    --bg-color: #0a0a0a;
    --airspace-bg: #111111;
    --panel-bg: #111111;
    --text-color: #e8e8e8;
    --text-secondary: #a0a0a0;
    --accent-color: #00ff88;
    --accent-hover: #00cc6a;
    --runway-color: #55ff00;
    --centerline-color: #ffffff;
    --plane-color: #00ff88;
    --plane-highlight: #00ffaa;
    --tcas-alert-color: #ff4444;
    --border-color: #333333;
    --card-bg: #1e1e1e;
    --shadow-light: rgba(0, 255, 136, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.8);
    --accent-green: #00ff88;
    --border-color: #30363d;
}


* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--bg-color) 0%, #101010 100%);
    color: var(--text-color);
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.container {
    display: flex;
    width: 100vw;
    height: 100vh;
    /* background: var(--card-bg); */
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px var(--shadow-dark),
        0 0 0 1px rgba(255, 255, 255, 0.05);
}

.airspace {
    position: relative;
    flex: 3;
 inset: 0;
    background-image: 
        radial-gradient(circle at center, var(--accent-green) 1px, transparent 1px),
        linear-gradient(rgba(0, 255, 136, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.08) 1px, transparent 1px);
    background-size: 80px 80px, 40px 40px, 40px 40px;
    opacity: 0.6;
    border-right: 1px solid var(--border-color);
    overflow: hidden;
}


.airspace::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    pointer-events: none;
    z-index: 0;
}

.details-panel {
    flex: 1;
    background: var(--panel-bg);
    padding: 10px;
    font-family: 'SF Mono', Consolas, Monaco, 'Cascadia Code', monospace;
    overflow-y: auto;
    border-left: 1px solid rgba(0, 255, 136, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
}

.details-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    opacity: 0.3;
}

.details-panel::-webkit-scrollbar {
    width: 6px;
}

.details-panel::-webkit-scrollbar-track {
    background: var(--airspace-bg);
    border-radius: 3px;
}

.details-panel::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 3px;
    opacity: 0.7;
}

.details-panel::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

.details-panel h2 {
    margin: 0 0 24px 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-color);
    position: relative;
    padding-bottom: 12px;
}

.details-panel h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
    border-radius: 1px;
}

.details-panel h3 {
    margin: 24px 0 16px 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

#details-content {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-secondary);
    background: var(--card-bg);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.runway {
    position: absolute;
    width: 45%;
    height: 18px;
    /* border: 1px solid rgb(3, 253, 19); */
    /* padding:20px; */
    /* margin-right:20px; */
    /* margin-left: 20px; */
    border-right: 1px solid white;
    border-left: 1px solid white;
    top: 50%;
    left: 5%;
    transform: translateY(-50%);
    /* border-radius: 9px; */

    /* border: 1px solid rgba(255, 255, 255, 0.1); */
    z-index: 1000;
}

.runway .centerline {
    position: absolute;
    width: 100%;
    height: 2px;
    background-image: linear-gradient(to right, transparent 0%, transparent 35%, var(--centerline-color) 35%, var(--centerline-color) 65%, transparent 65%, transparent 100%);
    background-size: 24px 2px;
    background-repeat: repeat-x;
    top: 50%;
    transform: translateY(-50%);
    opacity: 1;
    z-index:1000;
}

.plane {
    position: absolute;
    transform-origin: center center;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
}

.plane:hover {
    transform: scale(1.1);
}

.plane-symbol {
    width: 16px;
    height: 16px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: linear-gradient(135deg, var(--plane-color), var(--plane-highlight));
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 0 4px rgba(0, 255, 136, 0.3));
}

.plane.highlight .plane-symbol {
    background: linear-gradient(135deg, var(--plane-highlight), #00ffcc);
    box-shadow: 
        0 0 20px var(--plane-highlight),
        0 0 40px rgba(0, 255, 170, 0.4);
    transform: translate(-50%, -50%) scale(1.1);
}

.plane-tail {
    width: 6px;
    height: 12px;
    background: linear-gradient(135deg, var(--plane-color), var(--accent-color));
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(180deg) translateY(12px);
    border-radius: 1px;
    opacity: 0.99;
}

.plane.highlight .plane-tail {
    background: linear-gradient(135deg, var(--plane-highlight), #00ffcc);
    box-shadow: 0 0 8px var(--plane-highlight);
}

.plane-label {
    position: absolute;
    white-space: nowrap;
    font-size: 0.75rem;
    font-weight: 500;
    transform: translate(-50%, -200%);
    text-align: center;
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    color: var(--text-color);
    background: rgba(26, 26, 26, 0.9);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}


.plane-label.active {
    border: 2px solid rgba(0, 255, 17, 0.863);  /* 👈 highlight border */
    z-index:1000;
}

#path-visualizer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}
/* .waypoint-label {
    position: absolute;
    font-size: 12px;
    white-space: nowrap;
    color:var(--accent-color);
} */

.path-dot {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, var(--plane-highlight), transparent);
    border-radius: 50%;
    opacity: 1;
    /* box-shadow: 0 0 4px var(--plane-highlight); */
}

.waypoint {
    position: absolute;
    width: 0.95rem;
    height: 0.95rem;
    border: 2px solid var(--accent-color);
    background: transparent;
    transform: translate(-50%, -50%) rotate(45deg); /* This is correct for the diamond shape */
    cursor: pointer;
    opacity: 1;

    z-index: 100;
    /* Add this rule to allow child absolute positioning */
    /* position: relative;  */
}

.waypoint-label {
    /* Use absolute positioning to break the normal flow */
    position: absolute; 
    
    /* Position it relative to the parent's top-left corner */
    top: 50%;
    left: 50%;
    
    /* Counter-rotate the label and offset it from the waypoint */
    transform: translate(1px, 0%) rotate(-45deg);
    
    white-space: nowrap;
    color: white; /* Or whatever color you prefer */
}

.control-group #waypoint-select {
    flex-grow: 1;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 6px;
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.875rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    appearance: none; /* remove default arrow */
    background-image: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    background-size: 12px 12px;
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px; /* space for arrow */
    cursor: pointer;
}

.control-group .waypoint-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 
        0 0 0 3px rgba(0, 255, 136, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.1);
}


.controls-section {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
    background: var(--card-bg);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.controls-section label {
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.controls-section input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    outline: none;
    border-radius: 3px;
    /* -webkit-appearance: none; */
    margin: 8px 0;
}

.controls-section input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    cursor: pointer;
    border-radius: 50%;
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.2),
        0 0 0 2px var(--bg-color),
        0 0 8px rgba(0, 255, 136, 0.3);
}

.controls-section input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid var(--bg-color);
    box-shadow: 0 0 8px rgba(0, 255, 136, 0.3);
}

#num-planes-value {
    font-weight: 600;
    color: var(--accent-color);
    font-size: 0.875rem;
}

.tcas-alerts {
    background: linear-gradient(135deg, rgba(255, 68, 68, 0.95), rgba(255, 0, 0, 0.9));
    color: white;
    padding: 16px;
    border-radius: 8px;
    border: 2px solid var(--tcas-alert-color);
    margin-bottom: 24px;
    display: none;
    box-shadow: 
        0 4px 12px rgba(255, 68, 68, 0.3),
        0 0 20px rgba(255, 68, 68, 0.2);
    backdrop-filter: blur(10px);
}

.tcas-alerts h3 {
    margin: 0 0 8px 0;
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tcas-alerts p {
    margin: 4px 0 0 0;
    font-size: 0.875rem;
    opacity: 0.95;
}

.plane.tcas-alert .plane-symbol {
    animation: tcas-blink 1s ease-in-out infinite alternate;
}

.plane.tcas-alert .plane-tail {
    background: linear-gradient(135deg, var(--tcas-alert-color), #ff6666);
}

.plane.crashed .plane-symbol {
    background: radial-gradient(circle, #000000, #333333);
    box-shadow: 
        0 0 30px var(--tcas-alert-color),
        inset 0 0 10px var(--tcas-alert-color);
    border: 2px solid var(--tcas-alert-color);
    transform: translate(-50%, -50%) scale(1.4);
    animation: crash-pulse 2s ease-in-out infinite;
}

.plane.crashed .plane-tail {
    display: none;
}

@keyframes tcas-blink {
    from {
        background: linear-gradient(135deg, var(--tcas-alert-color), #ff6666);
        box-shadow: 0 0 20px var(--tcas-alert-color);
    }
    to {
        background: transparent;
        box-shadow: none;
    }
}

@keyframes crash-pulse {
    0%, 100% {
        box-shadow: 
            0 0 30px var(--tcas-alert-color),
            inset 0 0 10px var(--tcas-alert-color);
    }
    50% {
        box-shadow: 
            0 0 50px var(--tcas-alert-color),
            inset 0 0 20px var(--tcas-alert-color);
    }
}

.control-group {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    background: var(--airspace-bg);
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    flex-wrap: wrap; /* ✅ prevents overflow if things get too big */
}

.control-group label {
    flex: 0 0 auto; /* ✅ only as wide as needed */
    max-width: 40%; /* ✅ cap width */
    white-space: nowrap; /* ✅ keep on one line */
    overflow: hidden;
    text-overflow: ellipsis; /* ✅ truncate long labels */
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.control-group input[type="number"],
.control-group select {
    flex: 1 1 auto; /* ✅ grows to fill remaining space */
    min-width: 0;   /* ✅ prevents forcing overflow */
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 6px;
    font-family: 'SF Mono', Consolas, Monaco, monospace;
    font-size: 0.875rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.control-group input[type="number"]:focus,
.control-group select:focus {
    outline: none;

}

.control-group button,
#set-auto,
#hold {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: var(--bg-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    font-size: 0.8125rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}


.control-group button:active,
#set-auto:active,
#hold:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 255, 136, 0.2), 0 1px 2px rgba(0, 0, 0, 0.1);
}



#plane-controls {
    background: var(--card-bg);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 16px;
}

hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    margin: 24px 0;
}

/* Responsive improvements */
@media (max-width: 1200px) {
    .container {
        flex-direction: column;
    }
    
    .airspace {
        flex: 2;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .details-panel {
        flex: 1;
        border-left: none;
    }
}