/* ==========================================================================
   NEON TANK TITANS 3D: ARMORED WARFARE — Master Tactical Military Stylesheet
   Modern armored warfare telemetry, gunner optics reticle, digital compass,
   tactical paper doll armor schematic, and sleek sci-fi military terminal lobby.
   ========================================================================== */

:root {
    --bg-dark: #0a0c0f;
    --panel-bg: rgba(14, 18, 24, 0.88);
    --panel-border: rgba(0, 240, 255, 0.25);
    --accent-cyan: #00f0ff;
    --accent-gold: #facc15;
    --accent-green: #22c55e;
    --accent-red: #ef4444;
    --text-main: #f4f4f5;
    --text-muted: #94a3b8;
    --font-telemetry: 'Orbitron', 'Rajdhani', monospace, sans-serif;
    --font-ui: 'Rajdhani', 'Inter', -apple-system, sans-serif;
}

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

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

.hidden {
    display: none !important;
    pointer-events: none !important;
    visibility: hidden !important;
}

#game-wrapper {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

/* 3D WebGL Canvas */
#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
}

/* FLIR Thermal Night Vision mode filter */
#game-canvas.flir-mode {
    filter: invert(0.9) contrast(1.8) hue-rotate(90deg) brightness(1.1);
}

/* ==========================================================================
   TOP TACTICAL HEADER & COMPASS TAPE
   ========================================================================== */
#tactical-header-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 48px;
    background: linear-gradient(180deg, rgba(8, 11, 15, 0.95) 0%, rgba(8, 11, 15, 0.4) 100%);
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 18px;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-title {
    font-family: var(--font-telemetry);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-title span {
    color: var(--accent-cyan);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.network-badge {
    font-family: var(--font-telemetry);
    font-size: 0.78rem;
    padding: 3px 10px;
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.4);
    border-radius: 4px;
    color: var(--accent-green);
    display: flex;
    gap: 8px;
}

/* Digital Compass Tape in Header */
.compass-tape {
    font-family: var(--font-telemetry);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.3);
    padding: 4px 16px;
    border-radius: 4px;
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
}

.header-actions {
    display: flex;
    gap: 8px;
}

.tac-btn {
    background: rgba(20, 26, 35, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #e2e8f0;
    padding: 6px 13px;
    font-family: var(--font-ui);
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tac-btn:hover {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--accent-cyan);
    color: #fff;
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
}

.tac-btn.primary {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.25), rgba(0, 160, 255, 0.35));
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* ==========================================================================
   CENTER GUNNER RETICLE & RANGEFINDER
   ========================================================================== */
#gunner-reticle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.reticle-svg {
    width: 140px;
    height: 140px;
}

.reticle-telemetry {
    font-family: var(--font-telemetry);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-cyan);
    text-shadow: 0 0 6px rgba(0, 240, 255, 0.8);
    margin-top: 6px;
    background: rgba(10, 15, 22, 0.65);
    padding: 2px 8px;
    border-radius: 3px;
    border: 1px solid rgba(0, 240, 255, 0.3);
}

/* Floating Hit Marker */
#hit-marker {
    position: absolute;
    top: 42%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    font-family: var(--font-telemetry);
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: 2px;
    pointer-events: none;
    opacity: 0;
    transition: all 0.12s ease;
    z-index: 60;
    text-shadow: 0 0 14px currentColor;
}

#hit-marker.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.15);
}

/* ==========================================================================
   BOTTOM TACTICAL COMBAT HUD
   ========================================================================== */
#bottom-hud {
    position: absolute;
    bottom: 14px;
    left: 18px;
    right: 18px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    pointer-events: none;
    z-index: 90;
}

/* 1. Left Tank Armor Schematic & Health (Paper Doll) */
.tank-status-card {
    pointer-events: auto;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 12px 16px;
    backdrop-filter: blur(10px);
    width: 280px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.tank-identity {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-telemetry);
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--accent-cyan);
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 4px;
}

.bar-row {
    margin-bottom: 6px;
}

.bar-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.bar-track {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.bar-fill {
    height: 100%;
    transition: width 0.15s ease;
}

.bar-fill.health {
    background: linear-gradient(90deg, #22c55e, #16a34a);
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
}

.bar-fill.shield {
    background: linear-gradient(90deg, #00f0ff, #0284c7);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

/* Paper Doll Silhouette */
.schematic-diagram {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.paper-doll-container {
    width: 48px;
    height: 48px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.35);
    border-radius: 4px;
    border: 1px solid rgba(0, 240, 255, 0.2);
}

.doll-turret {
    position: absolute;
    width: 8px;
    height: 28px;
    background: var(--accent-cyan);
    border-radius: 2px;
    transform-origin: bottom center;
    transition: transform 0.08s linear;
}

.doll-modules {
    font-size: 0.72rem;
    font-family: var(--font-telemetry);
    color: var(--accent-green);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* 2. Center Driving Speedometer & Reload Gauge */
.driving-telemetry {
    pointer-events: auto;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 10px 22px;
    backdrop-filter: blur(10px);
    text-align: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.speed-readout {
    font-family: var(--font-telemetry);
    font-size: 2.1rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: 2px;
    text-shadow: 0 0 14px rgba(255, 255, 255, 0.4);
}

.gear-readout {
    font-family: var(--font-telemetry);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 2px;
    margin-bottom: 6px;
}

.reload-section {
    width: 240px;
    margin: 0 auto;
}

.reload-text {
    font-family: var(--font-telemetry);
    font-size: 0.76rem;
    font-weight: 800;
    color: var(--accent-green);
    letter-spacing: 1px;
    margin-bottom: 3px;
}

.reload-bar-track {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.reload-bar-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #4ade80);
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
}

/* 3. Right Ammunition Selection Panel */
.ammo-selector-card {
    pointer-events: auto;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 10px 14px;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    gap: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.ammo-btn {
    background: rgba(20, 26, 35, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    padding: 6px 12px;
    font-family: var(--font-ui);
    font-size: 0.82rem;
    font-weight: 700;
    color: #94a3b8;
    text-align: left;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    justify-content: space-between;
    gap: 14px;
}

.ammo-btn.active {
    background: rgba(0, 240, 255, 0.18);
    border-color: var(--accent-cyan);
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.35);
}

.ammo-btn kbd {
    background: rgba(0, 0, 0, 0.4);
    padding: 1px 5px;
    border-radius: 3px;
    font-family: var(--font-telemetry);
    color: var(--accent-cyan);
}

/* ==========================================================================
   TACTICAL BATTLE NETWORK LOBBY & MODALS
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 8, 12, 0.82);
    backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none !important;
}

.modal-card {
    background: #0e1218;
    border: 1px solid rgba(0, 240, 255, 0.35);
    border-radius: 8px;
    padding: 28px;
    width: 720px;
    max-width: 94vw;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.8), 0 0 24px rgba(0, 240, 255, 0.15);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 12px;
    margin-bottom: 20px;
}

.modal-title {
    font-family: var(--font-telemetry);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-title span {
    color: var(--accent-cyan);
}

.modal-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Commander Call-sign Bar */
.commander-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    padding: 12px 18px;
    margin-bottom: 20px;
}

.commander-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.commander-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.commander-name {
    font-family: var(--font-telemetry);
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--accent-cyan);
}

/* Create Sector Row */
.create-sector-row {
    display: flex;
    gap: 12px;
    margin-bottom: 22px;
}

.tac-input {
    flex: 1;
    background: rgba(18, 24, 33, 0.95);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 4px;
    padding: 10px 14px;
    color: #fff;
    font-family: var(--font-ui);
    font-size: 0.95rem;
    font-weight: 600;
    outline: none;
    user-select: text;
    -webkit-user-select: text;
    cursor: text;
}

.tac-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}

/* Sector List Container */
.sector-list-container {
    background: rgba(12, 16, 22, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    min-height: 180px;
    max-height: 240px;
    overflow-y: auto;
    padding: 8px;
    margin-bottom: 20px;
}

.sector-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(22, 28, 38, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 4px;
    padding: 10px 14px;
    margin-bottom: 6px;
    transition: all 0.15s ease;
}

.sector-row:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
}

.empty-sectors-msg {
    text-align: center;
    padding: 45px 20px;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* Challenge Modal Siren Card */
.siren-card {
    border-color: var(--accent-gold) !important;
    text-align: center;
    box-shadow: 0 0 32px rgba(250, 204, 21, 0.25) !important;
}