:root {
  --bg: #07070a;
  --panel: rgba(255, 255, 255, 0.1);
  --panel-heavy: rgba(255, 255, 255, 0.16);
  --stroke: rgba(255, 255, 255, 0.22);
  --stroke-soft: rgba(255, 255, 255, 0.14);
  --txt: #f4f4f6;
  --muted: #c9c9cf;
  --accent: #ff9a9c;
  --accent-15: rgba(255, 154, 156, 0.15);
  --accent-25: rgba(255, 154, 156, 0.25);
  --accent-40: rgba(255, 154, 156, 0.4);
  --blur: 12px;
  --radius-xl: 12px;
  --radius-pill: 999px;
  --btn-bg: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.18),
    rgba(255, 255, 255, 0.06)
  );
  --btn-inner: inset 0 1px 0 rgba(255, 255, 255, 0.25),
    inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  --btn-shadow: 0 6px 24px rgba(0, 0, 0, 0.28), 0 2px 10px rgba(0, 0, 0, 0.2);
  --glow: 0 0 0 4px var(--accent-15), 0 0 24px var(--accent-25);
}

html,
body {
  height: 100%;
  margin: 0;
  background: radial-gradient(
    1100px 700px at 20% -10%,
    #1a0f12 0%,
    #0c0b11 42%,
    #07070a 100%
  );
  color: var(--txt);
  font: 12px/1.2 -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Inter,
    system-ui, sans-serif;
}

#c {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.toolbar {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 6px 8px;
  backdrop-filter: blur(var(--blur)) saturate(1.05);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.05);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.14),
    rgba(255, 255, 255, 0.06)
  );
  border: 1px solid var(--stroke-soft);
  border-radius: var(--radius-xl);
  box-shadow: var(--btn-shadow);
}

.pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  border: 1px solid var(--stroke-soft);
  box-shadow: var(--btn-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}
.pill .lbl {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.2px;
}
.pill input[type="range"] {
  width: 100px;
}
.pill .val {
  font-variant-numeric: tabular-nums;
  min-width: 36px;
  text-align: right;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.chk {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  border: 1px solid var(--stroke-soft);
  box-shadow: var(--btn-shadow), var(--btn-inner);
}
.chk input {
  accent-color: var(--accent);
  transform: translateY(1px);
}

.side {
  position: fixed;
  left: 12px;
  bottom: 12px;
  z-index: 9;
  display: grid;
  gap: 10px;
  max-width: min(92vw, 460px);
}
.card {
  padding: 10px 12px;
  border-radius: var(--radius-xl);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.14),
    rgba(255, 255, 255, 0.06)
  );
  border: 1px solid var(--stroke-soft);
  box-shadow: var(--btn-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(var(--blur)) saturate(1.1);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.1);
}
.row {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
}
.row.small {
  gap: 8px;
}
.card label {
  color: var(--muted);
}
.hint {
  opacity: 0.75;
  font-size: 11px;
  margin-top: 6px;
}

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}
.tabs .tab {
  padding: 6px 10px;
  border-radius: 12px;
  border: 1px solid var(--stroke-soft);
  background: var(--btn-bg);
  color: #e9e9ee;
  cursor: pointer;
  box-shadow: var(--btn-shadow), var(--btn-inner);
}
.tabs .tab.active {
  color: #fff;
  border-color: var(--accent-40);
  box-shadow: var(--btn-shadow), 0 0 0 1px var(--accent-25) inset;
}

.url {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
}
.url input {
  width: 200px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--stroke-soft);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.1),
    rgba(255, 255, 255, 0.04)
  );
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.url button,
.row button {
  padding: 6px 10px;
  width: 60px;
  border-radius: 12px;
  border: 1px solid var(--stroke-soft);
  background: var(--btn-bg);
  color: #fff;
  cursor: pointer;
  box-shadow: var(--btn-shadow), var(--btn-inner);
  transition: transform 0.08s ease, box-shadow 0.2s ease;
}
.url button:hover,
.row button:hover {
  box-shadow: var(--btn-shadow), 0 0 0 1px var(--accent-25) inset;
}
.url button:active,
.row button:active {
  transform: translateY(1px) scale(0.99);
}

.shape-switch {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 10;
  padding: 6px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.14),
    rgba(255, 255, 255, 0.06)
  );
  border: 1px solid var(--stroke-soft);
  border-radius: var(--radius-xl);
  box-shadow: var(--btn-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(var(--blur)) saturate(1.1);
  -webkit-backdrop-filter: blur(var(--blur)) saturate(1.1);
}
.seg {
  display: flex;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke-soft);
}
.seg-btn {
  display: grid;
  place-items: center;
  width: 34px;
  height: 28px;
  border: none;
  background: transparent;
  color: #e9e9ee;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.08s ease,
    box-shadow 0.2s ease;
}
.seg-btn + .seg-btn {
  border-left: 1px solid var(--stroke-soft);
}
.seg-btn .ico {
  width: 16px;
  height: 16px;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.25));
}
.seg-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.seg-btn:active {
  transform: translateY(1px) scale(0.98);
}
.seg-btn.active {
  color: var(--accent);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.22),
    rgba(255, 255, 255, 0.08)
  );
  box-shadow: inset 0 0 0 1px var(--accent-25), 0 0 30px var(--accent-15);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 240px;
  height: 16px;
  background: transparent;
  outline: none;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 8px;
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.35),
      rgba(255, 255, 255, 0.1)
    ),
    rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 0 0 1px rgba(255, 255, 255, 0.22), 0 2px 10px rgba(0, 0, 0, 0.28);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  margin-top: -5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(
      circle at 30% 30%,
      rgba(255, 255, 255, 0.85) 0%,
      rgba(255, 255, 255, 0.55) 45%,
      rgba(255, 255, 255, 0.25) 100%
    ),
    var(--btn-bg);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.3), 0 0 0 3px var(--accent-15);
}
input[type="range"]:active::-webkit-slider-thumb {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.38), 0 0 0 5px var(--accent-25);
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 8px;
  background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.35),
      rgba(255, 255, 255, 0.1)
    ),
    rgba(255, 255, 255, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4),
    inset 0 0 0 1px rgba(255, 255, 255, 0.22), 0 2px 10px rgba(0, 0, 0, 0.28);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  background: radial-gradient(
      circle at 30% 30%,
      rgba(255, 255, 255, 0.85) 0%,
      rgba(255, 255, 255, 0.55) 45%,
      rgba(255, 255, 255, 0.25) 100%
    ),
    var(--btn-bg);
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.3), 0 0 0 3px var(--accent-15);
}

.seg-btn:focus-visible,
.url button:focus-visible,
.row button:focus-visible,
.tabs .tab:focus-visible,
input[type="range"]:focus-visible,
.url input:focus-visible,
.chk:has(input:focus-visible) {
  outline: none;
  box-shadow: var(--glow);
}

.url input::placeholder {
  color: #f2f2f6;
  opacity: 1;
}
.url input::-webkit-input-placeholder {
  color: #f2f2f6;
  opacity: 1;
}
.url input::-moz-placeholder {
  color: #f2f2f6;
  opacity: 1;
}
.url input:-ms-input-placeholder {
  color: #f2f2f6;
  opacity: 1;
}
.url input:focus::placeholder,
.url input:focus::-webkit-input-placeholder,
.url input:focus::-moz-placeholder,
.url input:focus:-ms-input-placeholder {
  color: #e0e0e6;
}

.side .card .row.small input[type="checkbox"] {
  accent-color: var(--accent);
}
.side .card .row.small input[type="checkbox"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-15);
  border-radius: 4px;
}

@media (max-width: 600px) {
  .pill input[type="range"] {
    width: 84px;
  }
  .url input {
    width: 160px;
  }
  .card input[type="range"] {
    width: 170px;
  }
  .seg-btn {
    width: 32px;
    height: 26px;
  }
  .seg-btn .ico {
    width: 15px;
    height: 15px;
  }
}