/* Core Styling Rules & Variable Maps */
:root {
    --page-bg: #000000; /* Stays solid absolute black */
}

/* Ver. 1 Cyan/Blue Neon State */
body.view-1 {
    --radar-bg: #000010;
    --grid-color: rgba(0, 217, 255, 0.07);
    --grid-accent: rgba(0, 217, 255, 0.2);
    --sweep-trail: rgba(0, 80, 255, 0.35);
    --sweep-edge: #00d9ff;
    --theme-glow: #00d9ff;
    --panel-glow-opacity: rgba(0, 217, 255, 0.15);
}

/* Ver. 2 Crimson Red Neon State */
body.view-2 {
    --radar-bg: #050000;
    --grid-color: rgba(255, 0, 68, 0.06);
    --grid-accent: rgba(255, 0, 68, 0.2);
    --sweep-trail: rgba(180, 0, 40, 0.35);
    --sweep-edge: #ff0044;
    --theme-glow: #ff0044;
    --panel-glow-opacity: rgba(255, 0, 68, 0.15);
}

/* Ver. 3 Tactical Matrix Green Neon State */
body.view-3 {
    --radar-bg: #000400;
    --grid-color: rgba(0, 255, 70, 0.06);
    --grid-accent: rgba(0, 255, 70, 0.2);
    --sweep-trail: rgba(0, 150, 30, 0.35);
    --sweep-edge: #00ff44;
    --theme-glow: #00ff44;
    --panel-glow-opacity: rgba(0, 255, 70, 0.15);
}

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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--page-bg) !important; /* Forces solid black everywhere */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    overflow-x: hidden;
    padding: 20px;
}

/* Responsive Fluid Wrapper Layout */
.radar-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    width: 100%;
    max-width: 360px; /* Perfect desktop limit, handles phones natively */
}

/* High-Tech Bezel Frame */
.radar-bezel {
    background: #111417;
    padding: 14px;
    border-radius: 50%;
    box-shadow: 
        inset 0px 4px 8px rgba(255, 255, 255, 0.1),
        inset 0px -4px 12px rgba(0, 0, 0, 0.9),
        0px 15px 40px rgba(0, 0, 0, 0.9);
    border: 1px solid #1a1e22;
}

/* Device Screen Dimension Controls */
.radar-screen {
    width: 290px;
    height: 290px;
    max-width: 78vw;  /* Keeps design flawless on thin mobile displays */
    max-height: 78vw; /* Locks ratio into an explicit square circle structure */
    background-color: var(--radar-bg);
    border-radius: 50%;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0px 0px 30px rgba(0, 0, 0, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.01);
    transition: background-color 0.4s ease;
}

/* Concentric Target Vectors */
.grid-lines {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border-radius: 50%;
    background-image: repeating-radial-gradient(
        transparent,
        transparent 28px,
        var(--grid-color) 29px,
        var(--grid-color) 30px
    );
    transition: background-image 0.4s ease;
}
.grid-lines::before, .grid-lines::after {
    content: "";
    position: absolute;
    background: var(--grid-accent);
    transition: background 0.4s ease;
}
.grid-lines::before {
    top: 50%; left: 0;
    width: 100%; height: 1px;
    transform: translateY(-50%);
}
.grid-lines::after {
    top: 0; left: 50%;
    width: 1px; height: 100%;
    transform: translateX(-50%);
}

/* Radar Sweep Line Object */
.sweep {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg, 
        transparent 50%, 
        var(--sweep-trail) 98%, 
        var(--sweep-edge) 100%
    );
    animation: spin-cw 3.8s linear infinite;
}

@keyframes spin-cw {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Blips System */
.dot {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--sweep-edge);
    border-radius: 50%;
    box-shadow: 0 0 12px 4px var(--theme-glow);
    opacity: 0;
    animation: ping-fade 3.8s linear infinite;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

/* Timings mapped exactly with 3.8s intervals */
.dot-1 { top: 24%; left: 70%; animation-delay: 0.5s; }
.dot-2 { top: 56%; left: 82%; animation-delay: 1.1s; }
.dot-3 { top: 76%; left: 44%; animation-delay: 1.7s; }
.dot-4 { top: 54%; left: 20%; animation-delay: 2.4s; }
.dot-5 { top: 30%; left: 32%; animation-delay: 3.1s; }

@keyframes ping-fade {
    0% { opacity: 0; transform: scale(0.6); }
    4% { opacity: 1; transform: scale(1.4); }
    18% { opacity: 0.5; transform: scale(1); }
    35% { opacity: 0; }
    100% { opacity: 0; }
}

/* Premium Segmented Switch Interface */
.toggle-container {
    background: #090b0d;
    padding: 4px;
    border-radius: 30px;
    border: 1px solid #171c22;
    box-shadow: 0px 4px 10px rgba(0,0,0,0.8);
}
.toggle-segmented {
    position: relative;
    display: flex;
    width: 210px;
    height: 30px;
}
.toggle-segmented input { display: none; }
.toggle-segmented label {
    flex: 1;
    z-index: 2;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    color: #556275;
    transition: color 0.3s ease;
}
.toggle-segmented input:checked + label {
    color: #000000;
}
.glider {
    position: absolute;
    height: 100%;
    width: 70px;
    background-color: var(--slider-bg);
    border-radius: 25px;
    z-index: 1;
    transition: transform 0.35s cubic-bezier(0.18, 0.89, 0.32, 1.15), background-color 0.4s ease;
    box-shadow: 0 0 12px var(--theme-glow);
}
body.view-1 .glider { background-color: #00d9ff; }
body.view-2 .glider { background-color: #ff0044; }
body.view-3 .glider { background-color: #00ff44; }

#v1:checked ~ .glider { transform: translateX(0); }
#v2:checked ~ .glider { transform: translateX(70px); }
#v3:checked ~ .glider { transform: translateX(140px); }


/* ULTRA-ATTRACTIVE LIGHTING CREDIT PANEL */
.lighting-info-panel {
    width: 100%;
    text-align: center;
    background: #040507;
    border-radius: 14px;
    padding: 16px;
    /* High glow border frame tracking theme state */
    border: 1px solid var(--theme-glow);
    box-shadow: 
        0 0 15px var(--panel-glow-opacity),
        inset 0 0 15px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
    animation: panel-pulse 3s infinite alternate ease-in-out;
    transition: border 0.4s ease, box-shadow 0.4s ease;
}

/* Pulsing container glow engine */
@keyframes panel-pulse {
    0% { box-shadow: 0 0 10px var(--panel-glow-opacity), inset 0 0 10px rgba(0,0,0,0.6); }
    100% { box-shadow: 0 0 20px var(--panel-glow-opacity), inset 0 0 15px var(--panel-glow-opacity); }
}

.prefix-tag {
    display: block;
    font-size: 8px;
    letter-spacing: 2px;
    color: var(--theme-glow);
    margin-bottom: 8px;
    opacity: 0.6;
    font-weight: bold;
    text-shadow: 0 0 3px var(--theme-glow);
    transition: color 0.4s ease, text-shadow 0.4s ease;
}

.credit-text {
    font-size: 12.5px;
    line-height: 1.6;
    font-family: monospace;
    color: #79889c;
}

/* Dynamic Neon Glowing Sign Typography */
.dev-name {
    font-weight: bold;
    font-size: 14px;
    color: #ffffff;
    letter-spacing: 0.4px;
    /* Deep multi-layered neon glow text-shadows */
    text-shadow: 
        0 0 4px #ffffff,
        0 0 8px var(--theme-glow),
        0 0 15px var(--theme-glow);
    transition: text-shadow 0.4s ease;
}

.dept-info, .univ-info {
    display: block;
    opacity: 0.85;
    font-size: 12px;
}

.copy-info {
    font-size: 11px;
    color: var(--theme-glow);
    display: block;
    margin-top: 6px;
    font-weight: bold;
    text-shadow: 0 0 5px var(--theme-glow);
    transition: color 0.4s ease, text-shadow 0.4s ease;
}