:root {
  --bg: #08111f;
  --bg2: #101d33;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.14);
  --text: #f7f9fc;
  --muted: rgba(247, 249, 252, 0.72);
  --accent: #8af0ce;
  --accent2: #ffd36d;
  --line: rgba(255, 255, 255, 0.16);
  --shadow: 0 24px 56px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(138, 240, 206, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 211, 109, 0.14), transparent 24%),
    linear-gradient(145deg, var(--bg), var(--bg2));
}

button, input { font: inherit; }

.shell {
  width: min(1220px, calc(100% - 24px));
  margin: 0 auto;
  padding: 24px 0 34px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(2.7rem, 7.4vw, 5.5rem);
  line-height: 0.95;
}

.lede {
  margin: 12px 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.menu {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.mode-card, .secondary, #startWordBtn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.mode-card {
  min-height: 150px;
  padding: 18px;
  text-align: left;
  cursor: pointer;
}

.primary {
  border: 1px solid rgba(138, 240, 206, 0.35);
  background: linear-gradient(135deg, rgba(138, 240, 206, 0.2), rgba(255, 211, 109, 0.14));
  color: var(--text);
  border-radius: 20px;
  box-shadow: var(--shadow);
  min-height: 42px;
  padding: 0 16px;
  cursor: pointer;
}

.mode-card:hover, .mode-card:focus-visible, .secondary:hover, #startWordBtn:hover {
  background: var(--panel-strong);
  transform: translateY(-1px);
}

.primary:hover, .primary:focus-visible {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.mode-name {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.mode-copy { color: var(--muted); }

.workspace {
  display: grid;
  gap: 14px;
}

.hud {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.hud strong { font-size: 1.2rem; }

.hud-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.secondary, #startWordBtn {
  min-height: 42px;
  padding: 0 16px;
  cursor: pointer;
}

.stage {
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    radial-gradient(circle at top right, rgba(255, 211, 109, 0.06), transparent 30%),
    radial-gradient(circle at bottom left, rgba(138, 240, 206, 0.08), transparent 28%),
    rgba(5, 10, 22, 0.48);
  padding: 20px;
  overflow: hidden;
}

.stage-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: end;
  margin-bottom: 14px;
}

.stage-top h2 {
  margin: 0;
  font-size: 2rem;
}

.stage-top p { margin: 0; color: var(--muted); }

.input-row {
  margin-bottom: 14px;
}

.input-row label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
}

.input-inline {
  display: flex;
  gap: 10px;
}

#wordInput {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  padding: 0 14px;
  min-height: 46px;
}

#wordInput::placeholder { color: rgba(245, 247, 251, 0.45); }

.canvas-wrap {
  position: relative;
  min-height: 560px;
  border-radius: 26px;
  overflow: hidden;
  background:
    linear-gradient(rgba(255,255,255,0.03), rgba(255,255,255,0.03)),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.07) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.07) 0 1px, transparent 1px 44px);
}

#outlineLayer, #traceCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#traceCanvas { touch-action: none; }

.letter-box {
  width: 180px;
  height: 220px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}

.letter-svg {
  width: 100%;
  height: 100%;
}

.letter-text {
  font-size: 150px;
  font-weight: 900;
  fill: transparent;
  stroke: rgba(255, 255, 255, 0.94);
  stroke-width: 7px;
  paint-order: stroke fill;
  stroke-linejoin: round;
}

.word-stage {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
  height: 100%;
  padding: 20px 32px;
}

.letter-gap {
  width: 54px;
  height: 220px;
  flex: 0 0 auto;
}

.footer-hint {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  margin-top: 12px;
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .menu { grid-template-columns: 1fr; }
  .hero { align-items: start; flex-direction: column; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 16px, 1180px); padding-top: 16px; }
  .input-inline { flex-direction: column; }
  .footer-hint { flex-direction: column; }
  .letter-box { width: 150px; height: 186px; }
  .letter-text { font-size: 126px; }
  .canvas-wrap { min-height: 500px; }
}