/* ============================================================
   DRONE FORMATION FLIGHT SIMULATOR - TACTICAL HUD STYLESHEET
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;800;900&family=Rajdhani:wght@500;600;700&family=Share+Tech+Mono&display=swap');

:root {
    --bg-dark: #070a0f;
    --panel-bg: rgba(12, 18, 28, 0.72);
    --panel-border: rgba(0, 240, 255, 0.28);
    --panel-border-glow: rgba(0, 240, 255, 0.45);
    
    --color-cyan: #00f0ff;
    --color-pink: #ff0055;
    --color-green: #00ff88;
    --color-amber: #ffb700;
    --color-text-main: #d8e5f2;
    --color-text-dim: #7a8fa6;
    
    --font-head: 'Orbitron', sans-serif;
    --font-ui: 'Rajdhani', sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-ui);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Vignette & scanline overlay */
.hud-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
    background: radial-gradient(circle at center, transparent 60%, rgba(3, 7, 12, 0.75) 100%);
    box-shadow: inset 0 0 100px rgba(0, 240, 255, 0.05);
}

.hud-overlay::before {
    content: " ";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    opacity: 0.2;
    pointer-events: none;
}

/* ================= HUD TOP HEADER ================= */
.top-nav {
    position: absolute;
    top: 14px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    pointer-events: auto;
}

.brand-title {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(14px);
    padding: 8px 18px;
    border-radius: 6px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.brand-icon {
    width: 12px;
    height: 12px;
    background: var(--color-cyan);
    box-shadow: 0 0 12px var(--color-cyan);
    border-radius: 2px;
    animation: pulseGlow 2s infinite alternate;
}

.brand-title h1 {
    font-family: var(--font-head);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #fff;
    text-transform: uppercase;
}

.brand-title span {
    color: var(--color-cyan);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border-left: 1px solid var(--color-text-dim);
    padding-left: 10px;
}

.top-status-bar {
    display: flex;
    gap: 12px;
}

.status-badge {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(14px);
    padding: 6px 14px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-green);
    box-shadow: 0 0 8px var(--color-green);
}

.status-dot.warning {
    background: var(--color-amber);
    box-shadow: 0 0 8px var(--color-amber);
}

/* ================= MAIN SIDE PANELS ================= */
.side-panel {
    position: absolute;
    top: 72px;
    bottom: 86px;
    width: 320px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(16px);
    border-radius: 8px;
    padding: 16px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-cyan) transparent;
}

.side-panel::-webkit-scrollbar {
    width: 4px;
}
.side-panel::-webkit-scrollbar-thumb {
    background: var(--color-cyan);
    border-radius: 4px;
}

.left-panel {
    left: 20px;
}

.right-panel {
    right: 20px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    padding-bottom: 8px;
}

.panel-title {
    font-family: var(--font-head);
    font-size: 0.88rem;
    letter-spacing: 1.5px;
    color: var(--color-cyan);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Drone Telemetry Cards */
.drone-card {
    background: rgba(18, 25, 38, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: all 0.3s ease;
}

.drone-card.leader {
    border-left: 4px solid var(--color-cyan);
}

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

.drone-name {
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.5px;
}

.callsign-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.telemetry-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.tele-item {
    display: flex;
    flex-direction: column;
    background: rgba(7, 12, 18, 0.5);
    padding: 4px 6px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.tele-label {
    font-size: 0.65rem;
    color: var(--color-text-dim);
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.tele-val {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: #ffffff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}


.progress-bar-bg {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}

.progress-bar-fill {
    height: 100%;
    width: 90%;
    background: var(--color-green);
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* Formation Distance Gauge */
.formation-gauge-card {
    background: rgba(18, 25, 38, 0.7);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 6px;
    padding: 12px;
    text-align: center;
}

.gauge-title {
    font-family: var(--font-head);
    font-size: 0.78rem;
    letter-spacing: 1px;
    color: var(--color-text-dim);
    margin-bottom: 6px;
}

.gauge-distance {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--color-cyan);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.formation-status-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-green);
    margin-top: 4px;
}

/* ================= RIGHT PANEL CONTROLS ================= */
.radar-box {
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(7, 11, 18, 0.6);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 6px;
    padding: 8px;
}

#tactical-radar {
    display: block;
    border-radius: 50%;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-label {
    font-family: var(--font-head);
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--color-text-dim);
    text-transform: uppercase;
}

.formation-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.btn-formation {
    background: rgba(18, 25, 38, 0.8);
    border: 1px solid rgba(0, 240, 255, 0.2);
    color: var(--color-text-main);
    padding: 7px 4px;
    border-radius: 4px;
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-formation:hover {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--color-cyan);
    color: #fff;
}

.btn-formation.active {
    background: var(--color-cyan);
    border-color: var(--color-cyan);
    color: #050b14;
    font-weight: 700;
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}

.slider-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.slider-info {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-cyan);
    cursor: pointer;
    box-shadow: 0 0 8px var(--color-cyan);
}

.toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(18, 25, 38, 0.6);
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider-toggle {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255, 255, 255, 0.2);
    transition: .3s;
    border-radius: 22px;
}

.slider-toggle:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider-toggle {
    background-color: var(--color-cyan);
}

input:checked + .slider-toggle:before {
    transform: translateX(22px);
    background-color: #070a0f;
}

/* ================= BOTTOM FLIGHT CONTROL BAR ================= */
.bottom-bar {
    position: absolute;
    bottom: 16px;
    left: 20px;
    right: 20px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(16px);
    border-radius: 8px;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.6);
}

.flight-instruct {
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.instruct-pill {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    padding: 4px 10px;
    border-radius: 4px;
    color: var(--color-cyan);
    font-weight: bold;
}

.cam-buttons {
    display: flex;
    gap: 8px;
}

.btn-cam {
    background: rgba(18, 25, 38, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text-main);
    padding: 6px 12px;
    border-radius: 4px;
    font-family: var(--font-head);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-cam:hover {
    border-color: var(--color-cyan);
    color: #fff;
}

.btn-cam.active {
    background: var(--color-cyan);
    border-color: var(--color-cyan);
    color: #050b14;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.btn-action {
    background: rgba(255, 0, 85, 0.15);
    border: 1px solid rgba(255, 0, 85, 0.4);
    color: #ff5588;
    padding: 6px 14px;
    border-radius: 4px;
    font-family: var(--font-head);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-action:hover {
    background: rgba(255, 0, 85, 0.3);
    color: #fff;
    box-shadow: 0 0 10px rgba(255, 0, 85, 0.4);
}

/* Mouse targeting 3D reticle indicator */
.target-crosshair {
    position: absolute;
    pointer-events: none;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border: 1px dashed var(--color-cyan);
    border-radius: 50%;
    z-index: 5;
    opacity: 0.8;
    transition: width 0.15s, height 0.15s;
}

.target-crosshair::before, .target-crosshair::after {
    content: "";
    position: absolute;
    background: var(--color-cyan);
}
.target-crosshair::before { top: 50%; left: -6px; right: -6px; height: 1px; transform: translateY(-50%); }
.target-crosshair::after { left: 50%; top: -6px; bottom: -6px; width: 1px; transform: translateX(-50%); }

@keyframes pulseGlow {
    from { box-shadow: 0 0 6px var(--color-cyan); }
    to { box-shadow: 0 0 18px var(--color-cyan); }
}

@media (max-width: 1024px) {
    .side-panel { width: 260px; }
    .flight-instruct { display: none; }
}