:root {
  --yellow: #f6c343;
  --teal: #4fb8a3;
  --blue: #3a9ad9;
  --gold: #e0a526;
  --ink: #0f1216;
  --panel: rgba(12, 15, 19, 0.82);
  --text: #f3f1ea;
  --muted: #a9b0b8;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: var(--text);
  font-family: var(--font);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }

.hidden { display: none !important; }

.overlay { position: fixed; inset: 0; z-index: 10; }
.center { display: grid; place-items: center; background: rgba(0, 0, 0, 0.45); }

/* ---------------------------------------------------------- intro */

.intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px 16px;
  text-align: center;
  background: radial-gradient(ellipse at center, #10202a 0%, #05080b 70%);
  transition: opacity 0.8s ease;
  z-index: 30;
}
.intro.out { opacity: 0; pointer-events: none; }

.intro-logo {
  width: min(26vh, 230px);
  height: auto;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 30px rgba(79, 184, 163, 0.35));
  animation: logoIn 1.2s cubic-bezier(.2, .8, .2, 1) 0.2s both;
}
.intro-welcome {
  font-size: clamp(18px, 2.6vw, 28px);
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  animation: fadeUp 0.8s ease 1.3s both;
}
.intro-title {
  font-size: clamp(48px, 9vw, 112px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.06em;
  background: linear-gradient(100deg, var(--yellow) 0%, #fff6d6 20%, var(--teal) 45%, var(--blue) 70%, var(--yellow) 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: titleIn 1.3s cubic-bezier(.2, .8, .2, 1) 1.8s both, shine 4s linear 3.1s infinite;
}
.intro-series {
  margin-top: 4px;
  font-size: clamp(20px, 3.4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #eef3f1;
  animation: fadeUp 0.9s ease 2.6s both;
}
.intro-tag {
  margin-top: 10px;
  font-size: clamp(12px, 1.5vw, 16px);
  letter-spacing: 0.45em;
  color: var(--gold);
  text-transform: uppercase;
  animation: fadeUp 0.8s ease 3.3s both;
}
.intro-dev {
  margin-top: clamp(14px, 3.5vh, 34px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  animation: fadeUp 0.8s ease 3.8s both;
}
.dev-by {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
/* Crops the logo out of its 2000x1250 artwork and fades the edges of its dark backdrop. */
.kag-mark {
  position: relative;
  width: 130px;
  aspect-ratio: 1680 / 490;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent), linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent), linear-gradient(180deg, transparent, #000 12%, #000 88%, transparent);
  mask-composite: intersect;
}
.kag-mark img {
  position: absolute;
  width: 119.05%;
  height: auto;
  left: -17.26%;
  top: -78.6%;
}
.dev-url { font-size: 12px; font-weight: 600; letter-spacing: 0.04em; color: #7fdcff; text-decoration: none; }
.dev-url:hover { text-decoration: underline; }
.intro-loading {
  position: absolute;
  bottom: 10px;
  font-size: 13px;
  color: var(--muted);
  opacity: 0;
  transition: opacity 0.3s;
}
.intro-loading.show { opacity: 1; }
.skip {
  position: absolute;
  right: 20px;
  bottom: 20px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 16px;
  font: 600 13px var(--font);
  cursor: pointer;
}
.skip:hover { color: #fff; border-color: #fff; }

@keyframes logoIn { from { opacity: 0; transform: scale(0.7); filter: blur(10px); } to { opacity: 1; transform: none; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes titleIn { from { opacity: 0; letter-spacing: 0.35em; transform: scale(0.94); } to { opacity: 1; letter-spacing: 0.06em; transform: none; } }
@keyframes shine { to { background-position: -250% 0; } }

/* ---------------------------------------------------------- menu */

.menu { pointer-events: none; display: flex; align-items: center; padding: 0 4vw; }
.menu-card {
  pointer-events: auto;
  width: min(420px, 100%);
  max-height: calc(100% - 16px);
  overflow: auto;
  touch-action: pan-y;
  padding: 28px 28px 22px;
  background: linear-gradient(160deg, rgba(14, 18, 23, 0.9), rgba(14, 18, 23, 0.72));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--yellow);
  border-radius: 14px;
  backdrop-filter: blur(6px);
  animation: fadeUp 0.6s ease both;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.brand img { width: 40px; height: 40px; }
.brand span { line-height: 1.25; }
.brand b { display: block; font-size: 20px; font-weight: 900; letter-spacing: 0.14em; color: #fff; }
.menu h1 {
  margin: 14px 0 8px;
  font-size: clamp(44px, 6vw, 68px);
  line-height: 0.92;
  font-weight: 900;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--yellow), var(--teal) 60%, var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede { margin: 0 0 14px; color: #d3d7dc; font-size: 15px; line-height: 1.45; }
.zones { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.zones span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--c);
  border: 1px solid color-mix(in srgb, var(--c) 55%, transparent);
  background: color-mix(in srgb, var(--c) 12%, transparent);
}
.controls { margin-top: 16px; font-size: 12.5px; color: var(--muted); display: grid; gap: 6px; }
kbd {
  display: inline-block;
  min-width: 22px;
  padding: 1px 6px;
  margin: 0 1px;
  border-radius: 5px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom-width: 2px;
  font: 600 11px var(--font);
  text-align: center;
  color: #e6e9ec;
}
.menu-foot { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.menu-foot b { color: var(--yellow); }
.link { background: none; border: none; color: var(--muted); font: 600 13px var(--font); cursor: pointer; padding: 4px 0; }
.link:hover { color: #fff; }
.disclaimer { margin: 10px 0 0; font-size: 11px; line-height: 1.4; color: var(--muted); }

.credits-card { max-height: calc(100% - 32px); overflow: auto; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.credits-card .kag-mark { width: 150px; }
.credits-card h3 { margin: 14px 0 0; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; }
.license-intro { margin: 0; font-size: 12.5px; color: var(--muted); }
.license-text {
  width: 100%;
  max-height: 34vh;
  margin: 4px 0 0;
  padding: 10px;
  overflow: auto;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  font: 11px/1.45 ui-monospace, Consolas, monospace;
  white-space: pre-wrap;
  text-align: left;
  color: #cfd5db;
  user-select: text;
  -webkit-user-select: text;
  touch-action: pan-y;
}

/* ---------------------------------------------------------- buttons & cards */

.btn {
  display: block;
  width: 100%;
  padding: 14px 18px;
  margin-top: 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: 800 15px var(--font);
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.1s, filter 0.2s;
}
.btn:hover { filter: brightness(1.15); }
.btn:active { transform: scale(0.98); }
.btn.primary { background: linear-gradient(90deg, var(--yellow), #f3a712); color: #1b1404; border: none; box-shadow: 0 6px 24px rgba(246, 195, 67, 0.25); }

.card {
  width: min(400px, calc(100% - 32px));
  padding: 24px;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  backdrop-filter: blur(6px);
  text-align: center;
}
.card h2 { margin: 0 0 8px; letter-spacing: 0.2em; }

/* ---------------------------------------------------------- HUD */

.hud { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
.hud-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: max(12px, env(safe-area-inset-top)) 16px 0;
}
.stat {
  display: flex;
  flex-direction: column;
  padding: 8px 14px;
  min-width: 96px;
  background: rgba(10, 12, 15, 0.6);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.stat .lbl { font-size: 10px; letter-spacing: 0.18em; color: var(--muted); font-weight: 700; }
.stat .val { font-size: 22px; font-weight: 900; font-variant-numeric: tabular-nums; }
.stat.ppe { margin-left: auto; position: relative; }
.stat.ppe .val { color: var(--yellow); }
.mult { position: absolute; top: -8px; right: -8px; background: #ffe066; color: #1b1404; font-weight: 900; font-size: 12px; padding: 2px 7px; border-radius: 999px; }
.icon-btn {
  pointer-events: auto;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(10, 12, 15, 0.6);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
.powers { position: absolute; top: 84px; right: 16px; display: grid; gap: 6px; width: 170px; }
.pw { background: rgba(10, 12, 15, 0.6); border-radius: 8px; padding: 6px 10px; border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); }
.pw span { display: block; font-size: 10px; font-weight: 800; letter-spacing: 0.12em; color: var(--c); }
.pw i { display: block; height: 4px; margin-top: 4px; border-radius: 2px; background: var(--c); width: 100%; transition: width 0.1s linear; }

.zone-toast {
  position: absolute;
  top: 86px;
  left: 50%;
  transform: translate(-50%, -12px);
  padding: 12px 26px;
  text-align: center;
  background: rgba(12, 14, 17, 0.78);
  border-top: 4px solid var(--yellow);
  border-radius: 10px;
  opacity: 0;
  transition: opacity 0.4s, transform 0.4s;
  max-width: calc(100% - 32px);
}
.zone-toast.show { opacity: 1; transform: translate(-50%, 0); }
#zoneName { font-size: clamp(18px, 3vw, 28px); font-weight: 900; letter-spacing: 0.06em; }
#zoneRule { margin-top: 4px; font-size: 13px; color: var(--yellow); font-weight: 600; }

.toast {
  position: absolute;
  top: 34%;
  left: 50%;
  transform: translate(-50%, 0) scale(0.8);
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-shadow: 0 3px 18px rgba(0, 0, 0, 0.6);
  opacity: 0;
  white-space: nowrap;
}
.toast.pop { animation: pop 1.4s ease both; }
@keyframes pop {
  0% { opacity: 0; transform: translate(-50%, 10px) scale(0.7); }
  15% { opacity: 1; transform: translate(-50%, 0) scale(1.08); }
  25% { transform: translate(-50%, 0) scale(1); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -16px) scale(1); }
}

/* ---------------------------------------------------------- game over */

.over { display: flex; align-items: center; padding: 0 4vw; pointer-events: none; }
.over .card { pointer-events: auto; max-height: calc(100% - 16px); overflow: auto; touch-action: pan-y; text-align: left; border-left: 4px solid #e5484d; animation: fadeUp 0.5s ease both; }
.incident { font-size: 12px; font-weight: 800; letter-spacing: 0.2em; color: #ff6b6b; }
.cause { margin: 6px 0 12px; font-size: 22px; font-weight: 800; line-height: 1.2; }
.tip { padding: 12px 14px; border-radius: 10px; background: rgba(246, 195, 67, 0.1); border: 1px solid rgba(246, 195, 67, 0.35); }
.tip span { font-size: 10px; font-weight: 800; letter-spacing: 0.18em; color: var(--yellow); }
.tip p { margin: 4px 0 0; font-size: 14px; line-height: 1.45; color: #ece6d4; }
.results { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 14px 0 4px; }
.results div { display: flex; flex-direction: column; padding: 8px; border-radius: 8px; background: rgba(255, 255, 255, 0.05); }
.results span { font-size: 10px; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; }
.results b { font-size: 17px; font-variant-numeric: tabular-nums; }
.new-best { margin-top: 8px; font-weight: 900; letter-spacing: 0.12em; color: #ffe066; }

.fps {
  position: fixed;
  left: 12px;
  bottom: 10px;
  z-index: 40;
  font: 600 12px ui-monospace, Consolas, monospace;
  color: #9ef7c4;
  background: rgba(0, 0, 0, 0.5);
  padding: 4px 8px;
  border-radius: 6px;
  pointer-events: none;
}

/* ---------------------------------------------------------- phones */

@media (max-width: 700px) {
  .menu, .over { align-items: flex-end; padding: 0 0 max(12px, env(safe-area-inset-bottom)); justify-content: center; }
  .menu-card, .over .card { width: calc(100% - 24px); padding: 18px; }
  .menu h1 { font-size: 40px; margin: 8px 0 6px; }
  .lede { font-size: 13px; margin-bottom: 10px; }
  .zones, .controls div:nth-child(-n + 2) { display: none; }
  .controls { margin-top: 10px; }
  .stat { min-width: 0; padding: 6px 10px; }
  .stat .val { font-size: 18px; }
  .powers { top: 70px; width: 140px; }
  .results { grid-template-columns: repeat(2, 1fr); }
  .cause { font-size: 18px; }
}