:root {
  --bg: #0a0806;
  --panel: #15100b;
  --panel2: #1c1510;
  --line: #322619;
  --accent: #e8a05c;
  --accent-dim: #7a5330;
  --accent-soft: #f0b878;
  --accent-glow: rgba(232, 160, 92, 0.25);
  --text: #eae3da;
  --text-dim: #8a7c6c;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

#loading-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 14vh 0 11vh;
  background: var(--bg);
  transition: opacity 0.4s ease;
}
#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-brand {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(120deg, var(--accent-soft), var(--accent) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.loading-anim-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2em;
}

.loading-credit {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  opacity: 0.85;
}

.loading-copyright {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  color: #ffffff;
  opacity: 0.28;
  position: absolute;
  bottom: 2.4vh;
  left: 0;
  right: 0;
  text-align: center;
}

#loading-hex {
  color: var(--accent);
  overflow: visible;
  animation: hexSpin 9s linear infinite;
  filter: drop-shadow(0 0 0.6em var(--accent-glow));
}

.hex-outline {
  opacity: 0.55;
}

.dot-group .dot {
  fill: var(--accent);
  transform-box: fill-box;
  transform-origin: center;
  animation: dotPulse 1.6s ease-in-out infinite;
}
.dot-group .ring0 { animation-delay: 0s; }
.dot-group .ring1 { animation-delay: 0.15s; }
.dot-group .ring2 { animation-delay: 0.3s; }

#loading-text {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}
#loading-text::after {
  content: "";
  animation: dots 1.4s steps(4, end) infinite;
}

@keyframes hexSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes dotPulse {
  0%, 100% { opacity: 0.3; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.15); }
}

@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
  100% { content: ""; }
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  margin: 0;
  height: 100%;
}

body {
  background:
    radial-gradient(ellipse 60vw 60vh at 15% -10%, rgba(232, 160, 92, 0.06), transparent),
    var(--bg);
  font-size: clamp(0.8rem, 0.35vw + 0.7rem, 1rem);
}

.wrap {
  max-width: 96vw;
  margin: 0 auto;
  padding: 1.6vh 1.8vw 1vh;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1vw;
  flex-wrap: wrap;
}

header h1 {
  font-family: var(--mono);
  font-size: clamp(1.2rem, 1.6vw, 1.7rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  background: linear-gradient(120deg, var(--accent-soft), var(--accent) 60%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
header h1 .dim { -webkit-text-fill-color: var(--text-dim); color: var(--text-dim); }

.subtitle {
  font-family: var(--mono);
  font-size: 0.8em;
  color: var(--text-dim);
  margin: 0 0 1vh;
}

main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(12rem, 15vw, 16rem);
  grid-template-rows: 1fr;
  gap: 1vw;
  flex: 1;
  min-height: 0;
}

@media (max-width: 55rem) {
  .wrap { height: auto; min-height: 100vh; }
  main { grid-template-columns: 1fr; }
}

.stage {
  position: relative;
  background: #050403;
  border: 0.07em solid var(--line);
  border-radius: 0.4em;
  overflow: hidden;
  box-shadow: 0 0 0 0.07em rgba(0,0,0,0.4), 0 2vh 6vh -2vh rgba(0,0,0,0.6);
}

#canvas {
  position: absolute;
  inset: 0;
  display: block;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

#canvas.grabbing {
  cursor: grabbing;
}

.hud {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.7em;
  color: var(--text-dim);
  display: flex;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  pointer-events: none;
}
.hud-left {
  top: 0.8em;
  left: 0.9em;
  gap: 1em;
}
.hud-right {
  top: 0.8em;
  right: 0.9em;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2em;
  opacity: 0.6;
  text-transform: none;
}
#hud-status { color: var(--accent); text-shadow: 0 0 0.8em var(--accent-glow); }

.hud-footer {
  position: absolute;
  bottom: 0.7em;
  right: 0.9em;
  font-family: var(--mono);
  font-size: 0.65em;
  color: var(--text-dim);
  opacity: 0.55;
  letter-spacing: 0.02em;
  pointer-events: none;
}

.panel {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 0.07em solid var(--line);
  border-radius: 0.4em;
  padding: 0.8em;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  overflow-y: auto;
  min-height: 0;
}

.section {
  background: rgba(0,0,0,0.18);
  border: 0.07em solid var(--line);
  border-radius: 0.35em;
  padding: 0.55em 0.7em;
  display: flex;
  flex-direction: column;
  gap: 0.6em;
}

.section-title {
  font-family: var(--mono);
  font-size: 0.72em;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding-bottom: 0.4em;
  border-bottom: 0.07em solid var(--line);
}

.field label {
  display: block;
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.3em;
}

.field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 0.3em;
}

.field output {
  display: block;
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--accent);
  margin-top: 0.15em;
  font-weight: 600;
}

.field select {
  width: 100%;
  background: var(--bg);
  color: var(--accent);
  border: 0.07em solid var(--line);
  border-radius: 0.3em;
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 0.5em 0.6em;
}

.row {
  display: flex;
  gap: 0.4em;
}

button {
  flex: 1;
  background: transparent;
  border: 0.07em solid var(--line);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82em;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.6em 0.4em;
  border-radius: 0.35em;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, box-shadow 0.15s, background 0.15s;
}
button:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 1em -0.3em var(--accent-glow);
}
button.primary {
  border-color: var(--accent-dim);
  color: var(--accent);
}
button.primary.active {
  background: var(--accent);
  color: #1a0f04;
  border-color: var(--accent);
  box-shadow: 0 0 1.3em -0.15em var(--accent-glow);
}
button.exact {
  border-color: var(--accent);
  color: var(--accent);
  background: linear-gradient(180deg, rgba(232,160,92,0.08), transparent);
}
button.exact:hover {
  border-color: var(--accent-soft);
  color: var(--accent-soft);
  box-shadow: 0 0 1.4em -0.3em var(--accent-glow);
}
button.exact:disabled {
  opacity: 0.5;
  cursor: wait;
}

.counter {
  font-family: var(--mono);
  font-size: 0.82em;
  color: var(--text-dim);
  border-top: 0.07em solid var(--line);
  padding-top: 0.5em;
}
.counter span { color: var(--accent); font-weight: 600; }

.note {
  font-size: 0.76em;
  line-height: 1.4;
  color: var(--text-dim);
  margin: 0;
}
.note strong { color: var(--accent-soft); }

@media (max-height: 56em) {
  .panel { padding: 0.5em; gap: 0.35em; }
  .section { padding: 0.35em 0.5em; gap: 0.35em; }
  .field label { margin-bottom: 0.15em; }
  .field output { margin-top: 0.1em; }
  .row { gap: 0.25em; }
  button { padding: 0.4em 0.4em; }
  .note { font-size: 0.68em; }
}

@media (max-height: 44em) {
  .note { display: none; }
  .section-title { padding-bottom: 0.2em; font-size: 0.65em; }
  .field label { font-size: 0.75em; }
}

@media (max-height: 38em) {
  .section-title { display: none; }
  .section { padding: 0.3em 0.4em; gap: 0.25em; }
  button { padding: 0.32em 0.3em; }
}