:root {
  --bg: #090f14;
  --panel: rgba(11, 18, 26, 0.82);
  --panel-border: rgba(121, 167, 106, 0.28);
  --accent: #d9ff66;
  --danger: #ff5d5d;
  --text: #f4f7ef;
  --muted: #9cac98;
  --glow: rgba(217, 255, 102, 0.38);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(111, 178, 118, 0.12), transparent 30%),
    linear-gradient(180deg, #0c1218 0%, #06080b 100%);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

body {
  display: grid;
  place-items: center;
}

.frame {
  position: relative;
  width: 100vw;
  height: 100vh;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.hud {
  position: absolute;
  z-index: 3;
  display: flex;
  gap: 12px;
}

.top-left {
  top: 18px;
  left: 18px;
  flex-direction: column;
}

.top-center {
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
}

.top-right {
  top: 18px;
  right: 18px;
}

.bottom-left {
  bottom: 18px;
  left: 18px;
}

.bottom-right {
  bottom: 18px;
  right: 18px;
  max-width: 320px;
}

.bottom-center {
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
}

.bottom-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.panel {
  min-width: 220px;
  padding: 14px 16px;
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.35),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.center-panel {
  min-width: 320px;
  text-align: center;
}

.center-main {
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.center-sub {
  margin-top: 4px;
  color: #dce8d3;
  font-size: 0.95rem;
}

.boss-hud {
  margin-top: 10px;
}

.boss-hud.hidden {
  display: none;
}

.boss-name {
  color: #ff8b8b;
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1rem;
}

.boss-bar {
  height: 12px;
  margin-top: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
}

#bossBar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #92ff77, #e9ff73);
  box-shadow: 0 0 16px rgba(146, 255, 119, 0.45);
}

.boss-health {
  margin-top: 6px;
  color: #eff9e8;
  font-size: 0.92rem;
}

.title-panel h1,
.overlay-card h2 {
  margin: 4px 0 0;
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
  letter-spacing: 0.06em;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 1.06rem;
  margin-bottom: 8px;
}

.stat-row span {
  color: var(--muted);
}

.bar {
  height: 14px;
  margin: 10px 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

#healthBar {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ff5757 0%, #ffb257 100%);
  box-shadow: 0 0 20px rgba(255, 87, 87, 0.45);
}

.combat-panel {
  width: min(92vw, 620px);
  padding: 12px 16px;
  border: 1px solid rgba(121, 167, 106, 0.12);
  border-radius: 18px;
  background: rgba(11, 18, 26, 0.28);
  backdrop-filter: blur(3px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.16);
}

.combat-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: #dce8d3;
  font-size: 1rem;
}

.combat-row span {
  color: var(--muted);
}

.combat-panel .bar {
  background: rgba(255, 255, 255, 0.05);
  margin: 8px 0 10px;
}

.controls-title {
  margin-bottom: 8px;
  color: var(--accent);
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel p {
  margin: 4px 0;
  color: #dce8d3;
  font-size: 1rem;
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, rgba(10, 26, 20, 0.2), rgba(0, 0, 0, 0.82)),
    rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms ease;
}

.overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.overlay-card {
  width: min(92vw, 540px);
  padding: 28px;
  border-radius: 28px;
  border: 1px solid rgba(217, 255, 102, 0.25);
  background:
    linear-gradient(180deg, rgba(18, 28, 33, 0.95), rgba(8, 12, 15, 0.92));
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  text-align: center;
}

.overlay-card p {
  color: #d8e4d0;
  font-size: 1.06rem;
}

.overlay-actions {
  margin: 22px 0 8px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 13px 28px;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #11210d;
  background: linear-gradient(90deg, #f8ff8a, #9ce847);
  box-shadow: 0 10px 30px rgba(156, 232, 71, 0.35);
}

button.secondary {
  color: #eaf3e3;
  background: linear-gradient(90deg, #31414e, #1d252c);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

.hidden {
  display: none !important;
}

button:hover {
  filter: brightness(1.06);
}

.hint {
  color: #9bb192;
  font-size: 0.92rem;
}

.level-banner {
  position: absolute;
  top: 72px;
  left: 50%;
  transform: translateX(-50%) translateY(-16px);
  z-index: 4;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(10, 16, 23, 0.78);
  border: 1px solid rgba(217, 255, 102, 0.2);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 260ms ease, transform 260ms ease;
  pointer-events: none;
}

.level-banner.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.weapon-dock {
  display: flex;
  gap: 10px;
  padding: 10px;
  border: 1px solid rgba(121, 167, 106, 0.28);
  border-radius: 22px;
  background: rgba(11, 18, 26, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.weapon-slot {
  width: 108px;
  padding: 9px 8px 8px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(34, 45, 56, 0.85), rgba(13, 18, 24, 0.9));
  text-align: center;
  opacity: 0.48;
  transition: transform 160ms ease, opacity 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.weapon-slot.owned {
  opacity: 0.95;
}

.weapon-slot.active {
  transform: translateY(-6px);
  border-color: rgba(217, 255, 102, 0.58);
  box-shadow: 0 14px 26px rgba(217, 255, 102, 0.16), inset 0 0 0 1px rgba(217, 255, 102, 0.18);
}

.slot-key {
  width: 26px;
  margin: 0 auto 6px;
  border-radius: 999px;
  background: rgba(217, 255, 102, 0.12);
  color: var(--accent);
  font-family: Impact, Haettenschweiler, "Arial Black", sans-serif;
}

.slot-name {
  font-size: 0.86rem;
  color: #dce8d3;
}

.gun-card {
  position: relative;
  width: 76px;
  height: 28px;
  margin: 0 auto 6px;
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.35));
}

.gun-card::before,
.gun-card::after {
  content: "";
  position: absolute;
  display: block;
}

.gun-card::before {
  left: 8px;
  top: 11px;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #c7d4dc, #8ea6b4);
}

.gun-card::after {
  background: #1d252d;
}

.gun-card.pistol::before { width: 34px; }
.gun-card.pistol::after {
  width: 9px;
  height: 14px;
  left: 24px;
  top: 14px;
  transform: skew(-18deg);
}

.gun-card.smg::before {
  width: 46px;
  background: linear-gradient(90deg, #a8ff94, #5da56b);
}
.gun-card.smg::after {
  width: 10px;
  height: 16px;
  left: 32px;
  top: 13px;
  transform: skew(-10deg);
}

.gun-card.shotgun::before {
  width: 58px;
  background: linear-gradient(90deg, #f9d28d, #8f6945);
}
.gun-card.shotgun::after {
  width: 18px;
  height: 10px;
  left: 10px;
  top: 16px;
  background: #634529;
}

.gun-card.rifle::before {
  width: 60px;
  background: linear-gradient(90deg, #8ee3ff, #53768c);
}
.gun-card.rifle::after {
  width: 11px;
  height: 18px;
  left: 28px;
  top: 12px;
  transform: skew(-8deg);
}

.gun-card.minigun::before {
  width: 62px;
  background: linear-gradient(90deg, #ff9494, #944848);
}
.gun-card.minigun::after {
  width: 20px;
  height: 12px;
  left: 10px;
  top: 15px;
  background: #2f343b;
}

@media (max-width: 900px) {
  .panel {
    min-width: 0;
    padding: 12px;
  }

  .bottom-left,
  .bottom-right {
    display: none;
  }

  .bottom-center {
    bottom: 10px;
  }

  .combat-panel {
    width: min(94vw, 520px);
  }

  .weapon-dock {
    gap: 6px;
    padding: 8px;
  }

  .weapon-slot {
    width: 72px;
    padding: 6px;
  }

  .gun-card {
    width: 50px;
    transform: scale(0.85);
  }

  .slot-name {
    font-size: 0.68rem;
  }

  .top-left,
  .top-right,
  .top-center {
    max-width: calc(50vw - 24px);
  }

  .stat-row {
    font-size: 0.95rem;
  }

  .title-panel h1 {
    font-size: 1.25rem;
  }
}