:root {
  --gold: #f7c531;
  --gold-deep: #cf9416;
  --spirit: #7fe9ff;
  --ink: #10131c;
  --paper: #fdf8ee;
  --red: #d6231f;
  --blue: #1f6fd0;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #0b0e16;
  font-family: "Trebuchet MS", "Segoe UI", Verdana, sans-serif;
  color: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

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

.hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
}

.hud-top {
  position: absolute;
  top: 18px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 22px;
}

.hud-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px 9px 12px;
  border-radius: 999px;
  background: rgba(12, 15, 24, 0.62);
  border: 2px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(6px);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.55);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.hud-studs {
  color: var(--gold);
}

.hud-spirits {
  color: var(--spirit);
}

.stud-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #fff3b0 0%, var(--gold) 42%, var(--gold-deep) 100%);
  box-shadow:
    inset 0 -3px 5px rgba(120, 70, 0, 0.55),
    inset 0 3px 5px rgba(255, 255, 230, 0.8),
    0 0 10px rgba(247, 197, 49, 0.55);
  position: relative;
}

.stud-icon::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  border: 2px solid rgba(120, 70, 0, 0.35);
}

.spirit-icon {
  width: 22px;
  height: 26px;
  background: var(--spirit);
  border-radius: 11px 11px 4px 4px;
  box-shadow: 0 0 12px rgba(127, 233, 255, 0.8);
  -webkit-mask: radial-gradient(circle at 30% 100%, transparent 4px, #000 4.5px),
    radial-gradient(circle at 70% 100%, transparent 4px, #000 4.5px);
  mask-composite: intersect;
  opacity: 0.95;
}

.hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(12, 15, 24, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  color: rgba(253, 248, 238, 0.92);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  white-space: nowrap;
  transition: opacity 0.5s ease;
}

.toast {
  position: absolute;
  top: 21%;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 30px;
  border-radius: 14px;
  background: rgba(10, 24, 32, 0.72);
  border: 2px solid rgba(127, 233, 255, 0.45);
  color: var(--spirit);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-shadow: 0 0 14px rgba(127, 233, 255, 0.8);
  box-shadow: 0 0 30px rgba(127, 233, 255, 0.25);
  animation: toast-pop 0.45s cubic-bezier(0.2, 1.6, 0.4, 1);
  white-space: nowrap;
}

@keyframes toast-pop {
  0% {
    transform: translateX(-50%) scale(0.6);
    opacity: 0;
  }
  100% {
    transform: translateX(-50%) scale(1);
    opacity: 1;
  }
}

.build-prompt {
  position: absolute;
  bottom: 96px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 14px;
  background: rgba(12, 15, 24, 0.66);
  border: 2px solid rgba(247, 197, 49, 0.5);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.build-bar {
  width: 180px;
  height: 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.14);
  overflow: hidden;
}

.build-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
  box-shadow: 0 0 10px rgba(247, 197, 49, 0.8);
  transition: width 0.05s linear;
}

/* ---------- Overlays ---------- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(64, 120, 220, 0.18), transparent 60%),
    radial-gradient(900px 500px at 80% 110%, rgba(214, 35, 31, 0.14), transparent 60%),
    rgba(7, 9, 15, 0.78);
  backdrop-filter: blur(7px);
}

.overlay[hidden] {
  display: none;
}

.overlay-card {
  max-width: 560px;
  width: 100%;
  text-align: center;
  padding: 38px 40px 28px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(22, 27, 41, 0.92), rgba(13, 16, 26, 0.94));
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* stud strip across the card top, like the top of a brick */
.overlay-card::before {
  content: "";
  display: block;
  height: 14px;
  margin: -16px auto 22px;
  width: 78%;
  background:
    radial-gradient(circle at 9% 50%, var(--gold) 6px, transparent 7px),
    radial-gradient(circle at 23.5% 50%, var(--red) 6px, transparent 7px),
    radial-gradient(circle at 38% 50%, var(--blue) 6px, transparent 7px),
    radial-gradient(circle at 52.5% 50%, #2da44e 6px, transparent 7px),
    radial-gradient(circle at 67% 50%, var(--gold) 6px, transparent 7px),
    radial-gradient(circle at 81.5% 50%, var(--red) 6px, transparent 7px),
    radial-gradient(circle at 96% 50%, var(--blue) 6px, transparent 7px);
  filter: drop-shadow(0 3px 2px rgba(0, 0, 0, 0.4));
}

.kicker {
  margin: 0 0 14px;
  font-size: 0.92rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9fb6e8;
}

.game-title {
  margin: 0;
  font-size: clamp(3rem, 9vw, 4.6rem);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--gold);
  text-shadow:
    0 2px 0 #a4720a,
    0 4px 0 #7a540a,
    0 7px 0 rgba(0, 0, 0, 0.45),
    0 14px 30px rgba(0, 0, 0, 0.6);
  transform: perspective(420px) rotateX(12deg);
}

.game-title span {
  color: var(--red);
  text-shadow:
    0 2px 0 #8c1411,
    0 4px 0 #5e0d0b,
    0 7px 0 rgba(0, 0, 0, 0.45),
    0 14px 30px rgba(0, 0, 0, 0.6);
}

.game-subtitle {
  margin: 10px 0 16px;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  text-transform: uppercase;
  color: var(--spirit);
  text-shadow: 0 0 18px rgba(127, 233, 255, 0.65);
}

.title-blurb {
  margin: 0 auto 20px;
  max-width: 430px;
  font-size: 1rem;
  line-height: 1.55;
  color: rgba(253, 248, 238, 0.85);
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px 14px;
  margin: 0 auto 24px;
  max-width: 470px;
  font-size: 0.88rem;
  color: rgba(253, 248, 238, 0.8);
}

.controls-grid div {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-start;
}

.key-cap {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 7px;
  background: linear-gradient(180deg, #3a4257, #232a3c);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.5);
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}

.play-button {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #2c1900;
  padding: 15px 46px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(180deg, #ffe27a, var(--gold) 45%, var(--gold-deep));
  box-shadow:
    0 5px 0 #8a5e05,
    0 14px 30px rgba(247, 197, 49, 0.35),
    inset 0 2px 0 rgba(255, 255, 255, 0.65);
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.15s ease;
}

.play-button:hover {
  filter: brightness(1.06);
}

.play-button:active {
  transform: translateY(4px);
  box-shadow:
    0 1px 0 #8a5e05,
    0 8px 18px rgba(247, 197, 49, 0.3),
    inset 0 2px 0 rgba(255, 255, 255, 0.65);
}

.disclaimer {
  margin: 24px 0 0;
  font-size: 0.72rem;
  line-height: 1.5;
  color: rgba(253, 248, 238, 0.45);
}

/* ---------- Win screen ---------- */

.win-title {
  margin: 0 0 10px;
  font-size: clamp(2rem, 6vw, 2.9rem);
  font-weight: 900;
  color: var(--spirit);
  text-shadow: 0 0 26px rgba(127, 233, 255, 0.75), 0 4px 0 rgba(0, 0, 0, 0.4);
}

.win-blurb {
  margin: 0 0 24px;
  color: rgba(253, 248, 238, 0.82);
}

.win-stats {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 28px;
}

.win-stat {
  min-width: 110px;
  padding: 14px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.win-stat span {
  display: block;
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--gold);
}

.win-stat label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(253, 248, 238, 0.6);
}

/* ---------- Error banner ---------- */

.error-banner {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 50;
  max-width: 90vw;
  padding: 10px 18px;
  border-radius: 10px;
  background: rgba(150, 24, 24, 0.92);
  color: #fff;
  font-size: 0.85rem;
  font-family: monospace;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.perf-banner {
  position: fixed;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(92vw, 640px);
  padding: 12px 20px;
  border-radius: 12px;
  background: rgba(140, 96, 10, 0.94);
  border: 1px solid rgba(255, 220, 130, 0.5);
  color: #fff8e6;
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: center;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.5);
}

@media (max-width: 640px) {
  .controls-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hud-pill {
    font-size: 1.05rem;
  }
}