/* Maze Escape — blueprint neon with crisp motion */

:root{
  --bg0:#060815;
  --bg1:#050612;
  --ink:rgba(231,244,255,0.92);
  --muted:rgba(231,244,255,0.72);
  --line:rgba(120, 220, 255, 0.56);
  --line2:rgba(120, 220, 255, 0.22);
  --accent:#7af0ff;
  --hot:#ff3db6;
  --good:#38ffb3;
  --warn:#ffc34a;
  --shadow: rgba(0,0,0,0.55);

  --ui: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --display: "Unbounded", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

*{ box-sizing:border-box; }
html, body { height:100%; }
body{
  margin:0;
  color: var(--ink);
  font-family: var(--ui);
  background:
    radial-gradient(1100px 700px at 75% 20%, rgba(122,240,255,0.14), transparent 55%),
    radial-gradient(900px 700px at 20% 80%, rgba(255,61,182,0.10), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow:hidden;
}

#app{
  position:relative;
  height:100%;
  width:100%;
}

/* Subtle grain + blueprint grid */
#app::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(to right, rgba(122,240,255,0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(122,240,255,0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.55;
  mix-blend-mode: screen;
}

#app::after{
  content:"";
  position:absolute;
  inset:-40px;
  pointer-events:none;
  opacity: 0.09;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.45) 1px, transparent 1.5px),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,0.35) 1px, transparent 1.5px);
  background-size: 140px 140px, 190px 190px;
  filter: blur(0.2px);
}

canvas{
  display:block;
  width:100%;
  height:100%;
  touch-action:none; /* allow swipe */
}

.hud{
  position:absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 5;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  pointer-events:none;
}

.hud__left, .hud__right{
  display:flex;
  align-items:center;
  gap: 10px;
}
.hud__right{ pointer-events:auto; }

.hud__center{
  pointer-events:none;
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 34px rgba(0,0,0,0.35);
  font-variant-numeric: tabular-nums;
}

.pip{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.22);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.18);
}
.pip.is-on{
  background: var(--good);
  box-shadow: 0 0 0 1px rgba(56,255,179,0.35), 0 0 18px rgba(56,255,179,0.35);
}

.badge{
  display:inline-flex;
  align-items:baseline;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 34px rgba(0,0,0,0.35);
  font-variant-numeric: tabular-nums;
}

.badge__label{
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  opacity: 0.78;
}
.badge__unit{ opacity: 0.8; }

.btn{
  pointer-events:auto;
  appearance:none;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.92);
  padding: 10px 12px;
  border-radius: 12px;
  font-family: var(--ui);
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
  user-select:none;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.26); }
.btn:active{ transform: translateY(0px); }
.btn:focus-visible{ outline: 3px solid rgba(122,240,255,0.72); outline-offset: 2px; }

.btn--ghost{ background: rgba(255,255,255,0.06); }
.btn--primary{
  background:
    linear-gradient(135deg, rgba(122,240,255,0.95), rgba(255,61,182,0.78));
  border-color: rgba(255,255,255,0.22);
  color: rgba(6,8,21,0.95);
  box-shadow: 0 14px 34px rgba(122,240,255,0.16), 0 12px 30px rgba(255,61,182,0.10);
}
.btn--primary:focus-visible{ outline-color: rgba(255,61,182,0.72); }

.overlay{
  position:absolute;
  inset:0;
  z-index: 10;
  display:grid;
  place-items:center;
  padding: 24px;
  background:
    radial-gradient(900px 600px at 50% 25%, rgba(255,255,255,0.10), rgba(0,0,0,0.62) 60%, rgba(0,0,0,0.80));
}
.overlay.hidden{ display:none; }

.card{
  width: min(620px, 100%);
  border-radius: 22px;
  padding: 22px 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 34px 90px rgba(0,0,0,0.58);
}

.title{
  font-family: var(--display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
  text-shadow: 0 10px 28px rgba(0,0,0,0.35);
}
.subtitle{
  margin: 0 0 14px 0;
  opacity: 0.86;
  line-height: 1.45;
}

.panel{
  margin: 12px 0 10px;
  padding: 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.20);
}
.panel__row{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  padding: 8px 4px;
  align-items:center;
}
.panel__row + .panel__row{ border-top: 1px solid rgba(255,255,255,0.08); }
.k{
  font-size: 12px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  opacity: 0.78;
}

.seg{
  display:inline-flex;
  gap: 6px;
  flex-wrap: wrap;
}
.seg__btn{
  appearance:none;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.92);
  padding: 8px 10px;
  border-radius: 999px;
  font-family: var(--ui);
  font-weight: 600;
  cursor:pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}
.seg__btn:hover{ transform: translateY(-1px); background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.24); }
.seg__btn:active{ transform: translateY(0px); }
.seg__btn.is-on{
  background: rgba(122,240,255,0.22);
  border-color: rgba(122,240,255,0.36);
  box-shadow: 0 0 0 1px rgba(122,240,255,0.12) inset;
}
.seg__btn:focus-visible{ outline: 3px solid rgba(122,240,255,0.72); outline-offset: 2px; }

.seed{
  width: 100%;
  appearance:none;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.92);
  padding: 10px 12px;
  border-radius: 12px;
  font-family: var(--ui);
  font-weight: 600;
}
.seed::placeholder{ color: rgba(255,255,255,0.55); }
.seed:focus-visible{ outline: 3px solid rgba(122,240,255,0.72); outline-offset: 2px; }

.result{
  margin: 10px 0 14px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.30);
  font-variant-numeric: tabular-nums;
}
.result.hidden{ display:none; }

.rules{
  margin: 12px 0 18px;
  padding: 14px 14px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.18);
}
.rules__row{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  padding: 8px 4px;
}
.rules__row + .rules__row{ border-top: 1px solid rgba(255,255,255,0.08); }
.rules__k{
  font-size: 12px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  opacity: 0.78;
}
.rules__v{ opacity: 0.95; }

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

.small{
  margin-top: 12px;
  opacity: 0.72;
  font-size: 12px;
  line-height: 1.5;
}
kbd{
  font-family: var(--ui);
  font-size: 0.95em;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 2px 6px;
  border-radius: 8px;
}

.toast{
  position:absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 7;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 18px 46px rgba(0,0,0,0.45);
  opacity: 0;
  pointer-events:none;
  transition: opacity 180ms ease, transform 180ms ease;
  white-space: nowrap;
  max-width: min(88vw, 560px);
  overflow: hidden;
  text-overflow: ellipsis;
}
.toast.is-on{
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

.dpad{
  position:absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 6;
  width: 176px;
  height: 132px;
  display:none; /* enabled for touch */
  filter: drop-shadow(0 16px 28px rgba(0,0,0,0.55));
}
.dpad__btn{
  appearance:none;
  position:absolute;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.92);
  font-family: var(--ui);
  font-weight: 800;
  cursor:pointer;
  user-select:none;
  -webkit-tap-highlight-color: transparent;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 90ms ease, background 120ms ease, border-color 120ms ease;
}
.dpad__btn:active{ transform: scale(0.98); background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.26); }
.dpad__btn:focus-visible{ outline: 3px solid rgba(122,240,255,0.72); outline-offset: 2px; }

.dpad__btn--up{ left: 61px; top: 0; }
.dpad__btn--down{ left: 61px; top: 78px; }
.dpad__btn--left{ left: 0; top: 39px; }
.dpad__btn--right{ left: 122px; top: 39px; }

@media (hover: none) and (pointer: coarse) {
  .dpad{ display:block; }
  .toast{ bottom: 162px; }
}

@media (max-width: 520px){
  .hud{
    top: 12px;
    left: 12px;
    right: 12px;
    gap: 10px;
  }
  .hud__center{ display:none; }
  .badge, .btn{ padding: 9px 10px; border-radius: 12px; }
  .badge__label{ font-size: 10px; }
  .title{ font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  .btn:hover, .seg__btn:hover{ transform:none !important; }
}