:root {
  --bg: #0b1020;
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --stroke: rgba(255, 255, 255, 0.12);
  --stroke2: rgba(255, 255, 255, 0.18);
  --ring: rgba(255, 255, 255, 0.24);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font: 14px/1.35 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    Arial;
  color: var(--text);
  background: radial-gradient(
      1200px 600px at 20% 10%,
      #1b2a6d55,
      transparent 60%
    ),
    radial-gradient(900px 500px at 80% 20%, #6d1b5e44, transparent 55%),
    var(--bg);
}

.wrap {
  max-width: 1120px;
  margin: 22px auto;
  padding: 0 14px;
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 14px;
}

.panel {
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.075),
    rgba(255, 255, 255, 0.045)
  );
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 14px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--stroke2);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}

h2 {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.section {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.row {
  display: grid;
  gap: 8px;
  margin: 10px 0;
}
.row.inline {
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
}
.label {
  color: var(--muted);
  font-size: 12px;
}
.value {
  font-variant-numeric: tabular-nums;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid var(--stroke2);
  color: var(--text);
  min-width: 86px;
  text-align: right;
}

input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.12);
  color: var(--muted);
  outline: none;
}

input[type="text"] {
  width: 100%;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid var(--stroke2);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  outline: none;
}

input[type="text"]:focus,
input[type="file"]:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.hint {
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--text);
  padding: 11px 12px;
  border-radius: 14px;
  cursor: pointer;
  background: radial-gradient(
      600px 120px at 30% 0%,
      rgba(255, 255, 255, 0.16),
      transparent 60%
    ),
    linear-gradient(
      to bottom,
      rgba(255, 255, 255, 0.12),
      rgba(255, 255, 255, 0.06)
    );
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: transform 0.1s ease, border-color 0.1s ease, filter 0.1s ease;
}

button:hover {
  filter: brightness(1.06);
  border-color: rgba(255, 255, 255, 0.3);
}
button:active {
  transform: translateY(1px);
}
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  filter: none;
}

.primary {
  border-color: rgba(120, 200, 255, 0.35);
  background: radial-gradient(
      600px 120px at 30% 0%,
      rgba(120, 200, 255, 0.22),
      transparent 60%
    ),
    linear-gradient(
      to bottom,
      rgba(120, 200, 255, 0.16),
      rgba(255, 255, 255, 0.06)
    );
}

.danger {
  border-color: rgba(255, 130, 170, 0.3);
  background: radial-gradient(
      600px 120px at 30% 0%,
      rgba(255, 130, 170, 0.2),
      transparent 60%
    ),
    linear-gradient(
      to bottom,
      rgba(255, 255, 255, 0.12),
      rgba(255, 255, 255, 0.06)
    );
}

.range {
  width: 100%;
  appearance: none;
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  outline: none;
}

.range::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(0, 0, 0, 0.18);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
}

.range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(0, 0, 0, 0.18);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.22);
}

.meta {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.12);
  color: var(--muted);
  font-size: 12px;
}

.meta b {
  color: var(--text);
  font-weight: 600;
}

@media (max-width: 980px) {
  .wrap {
    grid-template-columns: 1fr;
  }
}