:root {
  --cyan: #3ff6ff;
  --magenta: #ff3df0;
  --pink: #ff4f9a;
  --yellow: #ffd84a;
  --orange: #ff8a2a;
  --red: #ff3355;
  --green: #4dffa6;
  --ink: #e9f6ff;
  --dim: rgba(220, 235, 255, 0.55);
  --panel: rgba(12, 6, 30, 0.62);
  --hud-font: 'Orbitron', 'Rajdhani', system-ui, sans-serif;
  --ui-font: 'Rajdhani', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #05020f; overflow: hidden; color: var(--ink); font-family: var(--ui-font); user-select: none; -webkit-user-select: none; }
#app { position: fixed; inset: 0; }
#view { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; }
.hidden { display: none !important; }

/* ---------- HUD ---------- */
#hud { position: absolute; inset: 0; pointer-events: none; }
#vignette { position: absolute; inset: 0; opacity: 0; background: radial-gradient(ellipse at center, rgba(255,0,60,0) 45%, rgba(255,20,70,0.55) 100%); transition: opacity 0.08s; }
#vignette.low { animation: lowpulse 1.1s ease-in-out infinite; }
@keyframes lowpulse { 50% { opacity: 0.55; } }

#crosshair { position: absolute; left: 50%; top: 50%; width: 0; height: 0; --s: 7px; }
#crosshair i { position: absolute; background: var(--cyan); box-shadow: 0 0 6px var(--cyan), 0 0 1px #000; }
#crosshair .t, #crosshair .b { width: 2px; height: 9px; left: -1px; }
#crosshair .l, #crosshair .r { height: 2px; width: 9px; top: -1px; }
#crosshair .t { top: calc(-9px - var(--s)); }
#crosshair .b { top: var(--s); }
#crosshair .l { left: calc(-9px - var(--s)); }
#crosshair .r { left: var(--s); }
#crosshair b { position: absolute; width: 4px; height: 4px; left: -2px; top: -2px; border-radius: 50%; background: #fff; box-shadow: 0 0 6px var(--cyan); }

#hitmarker { position: absolute; left: 50%; top: 50%; width: 0; height: 0; opacity: 0; }
#hitmarker i { position: absolute; width: 2px; height: 10px; background: #fff; left: -1px; top: -5px; box-shadow: 0 0 6px #fff; }
#hitmarker i:nth-child(1) { transform: rotate(45deg) translateY(-13px); }
#hitmarker i:nth-child(2) { transform: rotate(135deg) translateY(-13px); }
#hitmarker i:nth-child(3) { transform: rotate(225deg) translateY(-13px); }
#hitmarker i:nth-child(4) { transform: rotate(315deg) translateY(-13px); }
#hitmarker.kill i { background: var(--magenta); box-shadow: 0 0 8px var(--magenta); height: 14px; }

#dash-meter { position: absolute; left: 50%; top: 50%; width: 60px; height: 60px; margin: -30px 0 0 -30px; transform: rotate(-90deg); opacity: 0; transition: opacity 0.25s; }
#dash-meter.show { opacity: 0.9; }
#dash-meter circle { fill: none; stroke-width: 2.5; }
#dash-meter .bg { stroke: rgba(255,255,255,0.12); }
#dash-meter .fg { stroke: var(--magenta); stroke-dasharray: 163.4; stroke-dashoffset: 0; filter: drop-shadow(0 0 3px var(--magenta)); }

.label { font-family: var(--ui-font); font-weight: 700; letter-spacing: 0.25em; font-size: 12px; color: var(--dim); }

#top { position: absolute; top: 18px; left: 0; right: 0; display: flex; justify-content: center; }
#wave-box { text-align: center; padding: 6px 26px 8px; background: linear-gradient(180deg, rgba(20,8,48,0.65), rgba(20,8,48,0)); border-top: 2px solid var(--magenta); box-shadow: 0 -2px 18px rgba(255,61,240,0.35); clip-path: polygon(0 0, 100% 0, 88% 100%, 12% 100%); min-width: 190px; }
#wave-num { font-family: var(--hud-font); font-weight: 900; font-size: 34px; line-height: 1; color: #fff; text-shadow: 0 0 12px var(--magenta), 0 0 2px var(--magenta); }
#drones-left { font-weight: 700; letter-spacing: 0.2em; font-size: 13px; color: var(--cyan); margin-top: 3px; text-shadow: 0 0 8px rgba(63,246,255,0.6); }

#score-box { position: absolute; top: 18px; right: 26px; text-align: right; }
#score { font-family: var(--hud-font); font-weight: 700; font-size: 30px; color: #fff; text-shadow: 0 0 10px var(--cyan); font-variant-numeric: tabular-nums; }
#score.bump { animation: bump 0.25s ease-out; }
@keyframes bump { 0% { transform: scale(1.18); color: var(--yellow); } 100% { transform: scale(1); } }
#combo { opacity: 0; transition: opacity 0.2s; display: flex; flex-direction: column; align-items: flex-end; }
#combo.show { opacity: 1; }
#combo-x { font-family: var(--hud-font); font-weight: 900; font-size: 24px; color: var(--yellow); text-shadow: 0 0 10px var(--orange); }
#combo-bar { width: 90px; height: 3px; background: rgba(255,255,255,0.15); margin-top: 2px; }
#combo-bar i { display: block; height: 100%; width: 100%; background: var(--yellow); box-shadow: 0 0 6px var(--yellow); transform-origin: right; }

#health-box, #ammo-box { position: absolute; bottom: 26px; width: 290px; padding: 10px 16px 12px; background: linear-gradient(90deg, var(--panel), rgba(12,6,30,0)); }
#health-box { left: 26px; border-left: 3px solid var(--cyan); }
#ammo-box { right: 26px; border-right: 3px solid var(--magenta); text-align: right; background: linear-gradient(270deg, var(--panel), rgba(12,6,30,0)); }
.row { display: flex; align-items: baseline; gap: 10px; }
#ammo-box .row { justify-content: flex-end; }
.icon { font-family: var(--hud-font); font-weight: 900; font-size: 26px; color: var(--cyan); text-shadow: 0 0 10px var(--cyan); }
#health-n, #ammo-n { font-family: var(--hud-font); font-weight: 700; font-size: 40px; line-height: 1; color: #fff; font-variant-numeric: tabular-nums; }
#health-n { text-shadow: 0 0 12px var(--cyan); }
#ammo-n { text-shadow: 0 0 12px var(--magenta); }
#ammo-max { font-family: var(--hud-font); font-size: 15px; color: var(--dim); }
.bar { position: relative; height: 8px; margin-top: 8px; background: rgba(255,255,255,0.08); clip-path: polygon(0 0, 100% 0, 98% 100%, 0 100%); }
.bar i { position: absolute; left: 0; top: 0; bottom: 0; width: 100%; transform-origin: left; }
#health-bar { background: linear-gradient(90deg, #19c6ff, var(--cyan)); box-shadow: 0 0 10px var(--cyan); z-index: 2; }
#health-ghost { background: rgba(255,80,120,0.85); transition: transform 0.6s 0.25s; z-index: 1; }
#ammo-bar { background: linear-gradient(270deg, #b02cff, var(--magenta)); box-shadow: 0 0 10px var(--magenta); transform-origin: right; left: auto; right: 0; }
#health-box.low #health-n { color: var(--red); text-shadow: 0 0 14px var(--red); animation: blink 0.6s steps(2) infinite; }
#health-box.low #health-bar { background: var(--red); box-shadow: 0 0 10px var(--red); }
@keyframes blink { 50% { opacity: 0.55; } }
#ammo-warn { font-weight: 700; letter-spacing: 0.3em; font-size: 13px; color: var(--yellow); margin-top: 6px; opacity: 0; text-shadow: 0 0 8px var(--orange); }
#ammo-box.low #ammo-warn { opacity: 1; animation: blink 0.5s steps(2) infinite; }
#ammo-box.empty #ammo-n { color: var(--red); }

#toast { position: absolute; left: 50%; top: 64%; transform: translateX(-50%); font-family: var(--hud-font); font-weight: 700; font-size: 18px; letter-spacing: 0.15em; opacity: 0; white-space: nowrap; }
#toast.show { animation: toast 1.4s ease-out forwards; }
@keyframes toast { 0% { opacity: 0; transform: translate(-50%, 10px); } 12% { opacity: 1; transform: translate(-50%, 0); } 75% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, -16px); } }

#banner { position: absolute; left: 0; right: 0; top: 24%; text-align: center; opacity: 0; }
#banner .main { font-family: var(--hud-font); font-weight: 900; font-size: 74px; letter-spacing: 0.08em; color: #fff; text-shadow: 0 0 22px var(--magenta), 0 0 4px var(--magenta), 0 4px 0 rgba(120, 0, 160, 0.7); }
#banner .sub { font-family: var(--ui-font); font-weight: 700; letter-spacing: 0.6em; font-size: 18px; color: var(--cyan); text-shadow: 0 0 10px var(--cyan); margin-bottom: 4px; }
#banner.show { animation: banner 2.4s cubic-bezier(.2,.8,.2,1) forwards; }
@keyframes banner { 0% { opacity: 0; transform: scale(1.6); filter: blur(8px); } 12% { opacity: 1; transform: scale(1); filter: blur(0); } 80% { opacity: 1; } 100% { opacity: 0; transform: scale(0.96); } }

#popups { position: absolute; inset: 0; overflow: hidden; }
.pop { position: absolute; font-family: var(--hud-font); font-weight: 900; font-size: 20px; color: #fff; transform: translate(-50%, -50%); white-space: nowrap; text-shadow: 0 0 10px var(--c, var(--magenta)), 0 2px 0 rgba(0,0,0,0.6); }
.pop small { font-size: 13px; color: var(--yellow); margin-left: 4px; }

#dmg-dirs { position: absolute; left: 50%; top: 50%; width: 0; height: 0; }
.dmg-dir { position: absolute; left: -90px; top: -90px; width: 180px; height: 180px; border-radius: 50%; border-top: 5px solid rgba(255, 40, 80, 0.95); filter: drop-shadow(0 0 8px rgba(255,30,70,0.9)); -webkit-mask: linear-gradient(90deg, transparent 30%, #000 45%, #000 55%, transparent 70%); mask: linear-gradient(90deg, transparent 30%, #000 45%, #000 55%, transparent 70%); }

/* Intermission */
#intermission { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; background: radial-gradient(ellipse at center, rgba(10,3,30,0.45), rgba(10,3,30,0.1) 70%); }
.cleared { font-family: var(--hud-font); font-weight: 900; font-size: 56px; color: #fff; letter-spacing: 0.06em; text-shadow: 0 0 22px var(--cyan), 0 0 3px var(--cyan), 0 4px 0 rgba(0, 90, 140, 0.7); animation: pop-in 0.6s cubic-bezier(.2,1.6,.4,1); }
@keyframes pop-in { 0% { transform: scale(0.4); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.panel { width: 440px; padding: 18px 26px 16px; background: rgba(14, 6, 36, 0.78); border: 1px solid rgba(63,246,255,0.35); box-shadow: 0 0 30px rgba(255,61,240,0.18), inset 0 0 30px rgba(63,246,255,0.06); clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px); }
.stats div { display: flex; justify-content: space-between; font-size: 19px; font-weight: 600; padding: 4px 0; border-bottom: 1px dashed rgba(255,255,255,0.08); opacity: 0; animation: row-in 0.35s ease-out forwards; }
.stats div b { font-family: var(--hud-font); font-weight: 700; font-size: 16px; color: var(--cyan); }
.stats div.bonus b { color: var(--yellow); }
@keyframes row-in { from { opacity: 0; transform: translateX(-12px); } to { opacity: 1; transform: none; } }
.total { display: flex; justify-content: space-between; align-items: baseline; margin-top: 12px; }
.total span { font-weight: 700; letter-spacing: 0.25em; font-size: 14px; color: var(--dim); }
.total b { font-family: var(--hud-font); font-weight: 900; font-size: 30px; color: #fff; text-shadow: 0 0 12px var(--magenta); }
.next { position: relative; width: 120px; height: 120px; margin-top: 8px; }
.next .ring { position: absolute; inset: 0; transform: rotate(-90deg); }
.next circle { fill: none; stroke-width: 4; }
.next .bg { stroke: rgba(255,255,255,0.1); }
.next .fg { stroke: var(--magenta); stroke-dasharray: 276.5; filter: drop-shadow(0 0 4px var(--magenta)); }
.next .count { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--hud-font); font-weight: 900; font-size: 46px; text-shadow: 0 0 14px var(--magenta); }
.next .caption { position: absolute; top: 128px; left: 50%; transform: translateX(-50%); white-space: nowrap; font-weight: 700; letter-spacing: 0.3em; font-size: 13px; color: var(--dim); }

/* Screens */
.screen { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px; }
#title { background: radial-gradient(ellipse 55% 50% at 50% 48%, rgba(8,2,24,0.62) 0%, rgba(8,2,24,0.25) 60%, rgba(5,1,16,0.7) 100%); }
.logo { text-align: center; }
.studio { font-weight: 700; letter-spacing: 0.7em; font-size: 15px; color: var(--cyan); text-shadow: 0 0 10px var(--cyan); margin-bottom: 4px; }
.logo h1 { margin: 0; font-family: var(--hud-font); font-weight: 900; font-size: 118px; line-height: 0.95; letter-spacing: 0.04em; font-style: italic; }
.logo h1 span { display: block; }
.logo .neon { color: #fff; text-shadow: 0 0 6px #fff, 0 0 20px var(--magenta), 0 0 44px var(--magenta), 0 0 80px #b400ff; }
.logo .drift { background: linear-gradient(180deg, #fff6c8 0%, #ffd84a 35%, #ff7a2a 55%, #ff2fa0 56%, #c03cff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; filter: drop-shadow(0 0 14px rgba(255, 90, 160, 0.7)) drop-shadow(0 5px 0 rgba(60, 0, 90, 0.9)); }
.logo .arena { font-family: var(--hud-font); font-weight: 700; font-size: 30px; letter-spacing: 0.4em; color: var(--cyan); text-shadow: 0 0 14px var(--cyan); margin-top: 8px; padding-left: 0.4em; }
.btn { pointer-events: auto; cursor: pointer; font-family: var(--hud-font); font-weight: 700; font-size: 20px; letter-spacing: 0.2em; color: #fff; padding: 16px 44px; background: linear-gradient(90deg, rgba(255,61,240,0.25), rgba(63,246,255,0.25)); border: 2px solid var(--magenta); box-shadow: 0 0 20px rgba(255,61,240,0.5), inset 0 0 18px rgba(255,61,240,0.25); text-shadow: 0 0 8px var(--magenta); clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%); transition: transform 0.12s, box-shadow 0.12s; }
.btn:hover { transform: scale(1.05); box-shadow: 0 0 34px rgba(255,61,240,0.8), inset 0 0 22px rgba(63,246,255,0.35); }
#play-btn { animation: breathe 1.8s ease-in-out infinite; }
@keyframes breathe { 50% { box-shadow: 0 0 36px rgba(255,61,240,0.85), inset 0 0 22px rgba(63,246,255,0.35); } }
.controls { display: flex; gap: 22px; padding: 10px 22px; background: rgba(10,4,28,0.7); border: 1px solid rgba(63,246,255,0.18); font-weight: 700; letter-spacing: 0.12em; font-size: 14px; color: var(--dim); }
kbd { display: inline-block; font-family: var(--hud-font); font-size: 11px; padding: 3px 7px; margin-right: 3px; border: 1px solid rgba(63,246,255,0.55); color: var(--cyan); border-radius: 3px; background: rgba(63,246,255,0.08); }
.best { font-family: var(--hud-font); letter-spacing: 0.3em; font-size: 13px; color: var(--yellow); }
.foot { position: absolute; bottom: 16px; font-size: 12px; letter-spacing: 0.3em; color: rgba(255,255,255,0.3); }
#pause { background: rgba(5,1,16,0.6); backdrop-filter: blur(4px); }
#pause h2 { font-family: var(--hud-font); font-weight: 900; font-size: 60px; margin: 0; text-shadow: 0 0 20px var(--cyan); }
#gameover { background: radial-gradient(ellipse at center, rgba(60,0,30,0.55), rgba(5,1,16,0.85)); }
.go-title { font-family: var(--hud-font); font-weight: 900; font-size: 72px; color: #fff; text-shadow: 0 0 24px var(--red), 0 0 4px var(--red); animation: glitch 2.5s infinite; }
@keyframes glitch { 0%, 92%, 100% { transform: none; } 93% { transform: translate(-4px, 1px) skewX(-6deg); } 95% { transform: translate(4px, -1px); } 97% { transform: translate(-2px, 0) skewX(4deg); } }
.go-sub { font-weight: 700; letter-spacing: 0.4em; color: var(--dim); margin-top: -12px; }
.newbest { text-align: center; margin-top: 10px; font-family: var(--hud-font); font-weight: 900; color: var(--yellow); letter-spacing: 0.3em; text-shadow: 0 0 12px var(--orange); animation: blink 0.7s steps(2) infinite; }
#loading { background: #05020f; font-family: var(--hud-font); letter-spacing: 0.3em; font-size: 14px; color: var(--cyan); }
.spin { width: 46px; height: 46px; border: 3px solid rgba(63,246,255,0.2); border-top-color: var(--magenta); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 800px) {
  .logo h1 { font-size: 64px; }
  .controls { flex-wrap: wrap; justify-content: center; gap: 10px; }
  #health-box, #ammo-box { width: 200px; }
  .panel { width: 92vw; }
  #banner .main { font-size: 44px; }
  .cleared { font-size: 34px; }
}

/* Held break (?break=1): keep the centre of the screen clear */
#intermission.held { justify-content: flex-start; padding-top: 104px; background: none; }
#intermission.held .cleared { font-size: 30px; }
#intermission.held .panel, #intermission.held .next { display: none; }