:root {
  --bg-a: #f0e7db;
  --bg-b: #d8cdbb;
  --panel: rgba(255, 255, 255, 0.78);
  --ink: #1f1d24;
  --ink-soft: #5f5a67;
  --line: rgba(31, 29, 36, 0.16);
  --main: #0f766e;
  --main-2: #ca6702;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 15% 10%, var(--bg-b), var(--bg-a) 45%);
  overflow-x: hidden;
}

.bg {
  position: fixed;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(8px);
  opacity: 0.35;
}

.bg-1 {
  width: 340px;
  height: 340px;
  background: #ee9b00;
  top: -120px;
  right: -90px;
}

.bg-2 {
  width: 280px;
  height: 280px;
  background: #2a9d8f;
  left: -90px;
  bottom: -90px;
}

.shell {
  width: min(820px, 94vw);
  margin: 24px auto;
  display: grid;
  gap: 14px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  backdrop-filter: blur(6px);
  padding: 16px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
  animation: rise 360ms ease both;
}

.hero h1 {
  margin: 0;
  font-size: 1.6rem;
}

.hero p {
  margin: 8px 0 0;
  color: var(--ink-soft);
}

h2 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.section-gap {
  margin-top: 18px;
}

.row {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.status {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.value-box {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.82);
}

.value-box strong {
  font-size: 1.45rem;
  color: var(--main);
  min-width: 2ch;
  text-align: center;
}

#sens-slider {
  width: 100%;
  margin-top: 14px;
  accent-color: var(--main);
}

#led-slider {
  width: 100%;
  margin-top: 14px;
  accent-color: var(--main-2);
}

#rainbow-speed-slider {
  width: 100%;
  margin-top: 14px;
  accent-color: #1d4ed8;
}

#rainbow-dir-slider {
  width: 100%;
  margin-top: 14px;
  accent-color: #7c3aed;
}

#rainbow-rich-slider {
  width: 100%;
  margin-top: 14px;
  accent-color: #0f766e;
}

.hint-grid {
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.touch-stat {
  margin-top: 10px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--ink-soft);
}

.touch-stat strong {
  color: var(--main-2);
}

.touch-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(8, minmax(78px, 1fr));
  gap: 8px;
}

.touch-cell {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.84);
}

.touch-key {
  font-size: 12px;
  color: var(--ink-soft);
}

.touch-bar {
  margin-top: 6px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, #1d3557, #457b9d, #f4a261, #e76f51);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 60ms linear;
}

.touch-num {
  margin-top: 5px;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.btn {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: #fff;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.btn-main {
  background: var(--main);
  color: #fff;
  border-color: transparent;
}

.btn-main:hover {
  background: #0a5e57;
}

.logs-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

#log-box {
  margin: 10px 0 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  min-height: 180px;
  max-height: 300px;
  overflow: auto;
  background: #151517;
  color: #f2f2f2;
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 600px) {
  .hint-grid {
    flex-direction: column;
    align-items: flex-start;
  }

  .touch-grid {
    grid-template-columns: repeat(4, minmax(72px, 1fr));
  }
}