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

html, body { width:100%; height:100%; overflow:hidden; background:#000; color:#00FF88;
    font-family:'Courier New', monospace; }

#game canvas { cursor: none; touch-action: none; }

/* ═══ SPLASH ══════════════════════════════════════════════════════════════════ */
#splash {
    position:fixed; inset:0;
    background: radial-gradient(ellipse at 40% 40%, #0a1f08 0%, #040a03 70%);
    display:flex; align-items:center; justify-content:center;
    overflow-y:auto; overflow-x:hidden;
}
.scanlines {
    position:absolute; inset:0; pointer-events:none; z-index:1;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.08) 2px, rgba(0,0,0,0.08) 4px);
}
.splash-inner { position:relative; z-index:2; width:min(900px,95vw); padding:1.5rem; }

.top-bar {
    display:flex; align-items:center; gap:1rem;
    font-size:0.7rem; letter-spacing:0.2rem; color:#445;
    border-bottom:1px solid #1a2e18; padding-bottom:0.6rem; margin-bottom:1.2rem;
}
.classified-stamp {
    margin-left:auto; border:2px solid #FF2200; color:#FF2200;
    font-size:0.65rem; letter-spacing:0.25rem; padding:0.15rem 0.5rem;
    transform:rotate(-2deg);
}

.briefing-box {
    border:1px solid #1a3016; background:rgba(0,15,0,0.7);
    padding:1.5rem; margin-bottom:1.2rem;
}
.briefing-header {
    font-size:0.68rem; letter-spacing:0.12rem; color:#334; margin-bottom:1.2rem;
}
.sys-label { color:#00FF88; }

.mission-title { text-align:center; margin-bottom:1.5rem; }
.title-line { font-size:0.8rem; letter-spacing:0.5rem; color:#445; }
.title-name {
    font-size:clamp(2rem,8vw,4.5rem); font-weight:900;
    letter-spacing:0.3rem; color:#00FF88;
    text-shadow: 0 0 40px rgba(0,255,136,0.5), 0 0 80px rgba(0,255,136,0.2);
    line-height:1;
}
.title-sub { font-size:0.75rem; letter-spacing:0.4rem; color:#336622; margin-top:0.4rem; }

.intel-grid {
    display:grid; grid-template-columns:repeat(4,1fr); gap:1rem;
    margin-bottom:1.4rem;
}
.intel-block {
    background:rgba(0,20,5,0.8); border:1px solid #1a2e18;
    padding:0.6rem; text-align:center;
}
.intel-block canvas { display:block; margin:0 auto 0.4rem; image-rendering:pixelated; }
.intel-label { font-size:0.62rem; letter-spacing:0.1rem; color:#445; line-height:1.5; }
.intel-label span { color:#335; font-size:0.58rem; }

.obj-list { margin-bottom:1.2rem; display:flex; flex-direction:column; gap:0.45rem; }
.obj-item { display:flex; align-items:flex-start; gap:0.8rem; font-size:0.73rem; color:#7A9; }
.obj-item.warn { color:#CC6600; }
.obj-num { color:#00FF88; min-width:1.5rem; font-weight:700; }

.controls-grid {
    display:grid; grid-template-columns:repeat(4,1fr); gap:0.5rem;
    font-size:0.65rem; color:#445; border-top:1px solid #1a2e18; padding-top:0.8rem;
}
kbd {
    background:#0d1f0a; border:1px solid #2a4a28; color:#00FF88;
    padding:0.1rem 0.35rem; border-radius:2px; font-family:inherit;
    font-size:0.62rem; display:block; margin-bottom:0.25rem;
}

/* touch-only controls shown via JS */
.touch-controls { display:none; }

#btnStart {
    display:block; width:100%;
    background:transparent; border:1px solid #00FF88; color:#00FF88;
    font-family:inherit; font-size:1rem; letter-spacing:0.35rem;
    padding:1rem; cursor:pointer; margin-bottom:0.8rem;
    transition:background 0.2s, color 0.2s;
    text-shadow: 0 0 15px rgba(0,255,136,0.5);
    -webkit-tap-highlight-color: transparent;
}
#btnStart:hover, #btnStart:active { background:#00FF88; color:#000; cursor:pointer; }

.footer-bar { font-size:0.6rem; letter-spacing:0.15rem; color:#223322; text-align:center; }

/* blink animations */
.blink { animation: blink 1s step-start infinite; }
.blink-slow { animation: blink 2s step-start infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ═══ GAME ════════════════════════════════════════════════════════════════════ */
#game { position:fixed; inset:0; }
#game.hidden { display:none; }
#canvas { display:block; width:100%; height:100%; }

/* ═══ HUD ═════════════════════════════════════════════════════════════════════ */
#hudAmmoBox, #hudFriendlyBox {
    position:fixed; top:1rem;
    background:rgba(0,12,5,0.75); border:1px solid rgba(0,255,136,0.18);
    padding:0.6rem 0.9rem; pointer-events:none;
}
#hudAmmoBox { left:1rem; }
#hudFriendlyBox { right:1rem; text-align:right; }
.hud-label { font-size:0.6rem; letter-spacing:0.18rem; color:#335; margin-bottom:0.3rem; }

#hudAmmoIcons, #hudFriendlyIcons { font-size:1rem; letter-spacing:0.15rem; }
.ammo-pip { color:#00FF88; }
.ammo-pip.spent { color:#1a2e1a; }
.friendly-pip { color:#22AA44; }
.friendly-pip.dead { color:#333; text-decoration:line-through; }
#hudFriendlyCount { font-size:0.65rem; color:#336622; margin-top:0.25rem; }

#hudCenter {
    position:fixed; top:1rem; left:50%; transform:translateX(-50%);
    text-align:center; pointer-events:none;
}
#hudTimer { font-size:2.2rem; font-weight:900; letter-spacing:0.1rem;
    text-shadow:0 0 20px rgba(0,255,136,0.5); }
#hudWave { font-size:0.62rem; letter-spacing:0.25rem; color:#335; margin-top:0.15rem; }

#hudScore {
    position:fixed; bottom:1rem; left:50%; transform:translateX(-50%);
    font-size:0.8rem; letter-spacing:0.2rem; color:#336622; pointer-events:none;
}

/* ═══ OVERLAYS ════════════════════════════════════════════════════════════════ */
#thermalBadge {
    position:fixed; top:4.5rem; left:50%; transform:translateX(-50%);
    background:rgba(0,60,20,0.85); border:1px solid #00FF88;
    font-size:0.65rem; letter-spacing:0.2rem; padding:0.2rem 0.8rem;
    pointer-events:none; animation:blink 1.5s step-start infinite;
}
#warnMsg {
    position:fixed; bottom:3rem; left:50%; transform:translateX(-50%);
    background:rgba(140,0,0,0.9); border:1px solid #FF4400; color:#fff;
    font-size:0.8rem; letter-spacing:0.18rem; padding:0.5rem 1.5rem;
    pointer-events:none; animation:blink 0.6s step-start infinite;
}
#blockedMsg {
    position:fixed; background:rgba(180,40,0,0.85); border:1px solid #FF4400;
    color:#FF8866; font-size:0.65rem; letter-spacing:0.12rem;
    padding:0.2rem 0.5rem; pointer-events:none;
}
.hidden { display:none !important; }

/* wave clear */
#waveClear {
    position:fixed; top:50%; left:50%; transform:translate(-50%,-50%);
    background:rgba(0,10,3,0.92); border:1px solid #00FF88;
    padding:1.5rem 3rem; text-align:center; pointer-events:none;
    animation:blink 0.7s step-start infinite;
}
#waveClearText { font-size:1rem; letter-spacing:0.2rem; color:#00FF88; }

/* game over */
#gameOver {
    position:fixed; inset:0; background:rgba(0,0,0,0.88);
    display:flex; align-items:center; justify-content:center;
}
.go-box {
    border:1px solid rgba(0,255,136,0.3); background:rgba(0,8,3,0.97);
    padding:3rem 4rem; text-align:center;
}
#goTitle { font-size:1.6rem; font-weight:900; letter-spacing:0.2rem; margin-bottom:0.8rem; }
#goBody  { color:#7A9; font-size:0.85rem; margin-bottom:0.4rem; }
#goScore { color:#00FF88; font-size:1.2rem; margin-bottom:1.8rem; font-weight:700; }
#btnRestart {
    background:transparent; border:1px solid #00FF88; color:#00FF88;
    font-family:inherit; font-size:0.9rem; letter-spacing:0.25rem;
    padding:0.7rem 2.5rem; cursor:pointer; transition:background 0.2s, color 0.2s;
    -webkit-tap-highlight-color: transparent;
}
#btnRestart:hover, #btnRestart:active { background:#00FF88; color:#000; }

/* ═══ MOBILE ON-SCREEN BUTTONS ════════════════════════════════════════════════ */
#mobileButtons {
    display: none;
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    flex-direction: column;
    gap: 0.6rem;
    z-index: 20;
}
.mobile-btn {
    background: rgba(0,15,5,0.88);
    border: 1px solid rgba(0,255,136,0.3);
    color: #00FF88;
    font-family: 'Courier New', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.1rem;
    padding: 0.85rem 1.2rem;
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-width: 88px;
    text-align: center;
    transition: background 0.1s, border-color 0.1s;
}
.mobile-btn:active, .mobile-btn.active {
    background: rgba(0,255,136,0.15);
    border-color: #00FF88;
}
#btnFireMobile {
    font-size: 1rem;
    padding: 1.1rem 1.4rem;
    border-color: rgba(255,80,0,0.5);
    color: #FF8855;
}
#btnFireMobile:active { background: rgba(255,80,0,0.2); border-color: #FF4400; }

/* ═══ ROTATE PROMPT (phone portrait) ══════════════════════════════════════════ */
#rotateMsg {
    display: none;
    position: fixed;
    inset: 0;
    background: #000;
    color: #00FF88;
    font-family: 'Courier New', monospace;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
    z-index: 9999;
    padding: 2rem;
}
#rotateMsg .rotate-icon { font-size: 3rem; animation: spin 2s linear infinite; }
@keyframes spin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }
#rotateMsg p { font-size: 0.85rem; letter-spacing: 0.2rem; color: #445; }

/* ═══ RESPONSIVE ══════════════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    .splash-inner { padding: 0.75rem; }
    .briefing-box { padding: 1rem; }
    .intel-grid { grid-template-columns: repeat(2,1fr); gap: 0.6rem; }
    .title-name { letter-spacing: 0.1rem; }
    .obj-item { font-size: 0.68rem; }
    #hudTimer { font-size: 1.6rem; }
    #hudAmmoBox, #hudFriendlyBox { padding: 0.4rem 0.6rem; }
    #hudAmmoIcons, #hudFriendlyIcons { font-size: 0.85rem; }
    .go-box { padding: 2rem 1.5rem; }
}

@media (max-height: 500px) and (orientation: landscape) {
    .splash-inner { padding: 0.5rem; }
    .briefing-box { padding: 0.75rem; margin-bottom: 0.6rem; }
    .mission-title { margin-bottom: 0.8rem; }
    .intel-grid { margin-bottom: 0.7rem; }
    .obj-list { margin-bottom: 0.6rem; gap: 0.3rem; }
    .briefing-header { margin-bottom: 0.6rem; }
}

/* Touch device: show mobile buttons, hide unused HUD overflow */
@media (hover: none) and (pointer: coarse) {
    #mobileButtons { display: flex; }
    .desktop-ctrl { display: none; }
    .touch-controls { display: block; }
}

/* Phone portrait: show rotate prompt */
@media (max-width: 600px) and (orientation: portrait) {
    #rotateMsg { display: flex; }
}