:root {
  --bg-a: #070c11;
  --bg-b: #0e1b27;
  --panel: rgba(10, 19, 28, 0.86);
  --fg: #e9f6ff;
  --subtle: #9cb5c9;
  --accent: #66e5bb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--fg);
  font-family: "Noto Sans JP", "Hiragino Sans", sans-serif;
  background: radial-gradient(1000px 620px at 18% 10%, #223c54 0%, transparent 50%),
    linear-gradient(145deg, var(--bg-a), var(--bg-b));
}

.layout {
  width: min(1540px, 95vw);
  margin: 0.8rem auto 1.2rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: start;
}

.app-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

.app-header h1 {
  margin: 0;
  font-size: 1.08rem;
}

.app-header p {
  margin: 0;
  color: var(--subtle);
  font-size: 0.8rem;
}

.app-header nav {
  margin-left: auto;
  display: flex;
  gap: 0.55rem;
}

.app-header nav a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.84rem;
}

.panel {
  border-radius: 0.85rem;
  border: 1px solid rgba(102, 229, 187, 0.28);
  background: var(--panel);
  padding: 0.85rem;
}

.stage {
  grid-column: 1;
  position: relative;
  min-height: 72vh;
  display: flex;
  flex-direction: column;
}

#view-canvas {
  width: 100%;
  height: 100%;
  min-height: 68vh;
  border-radius: 0.55rem;
  background: #04090f;
  display: block;
  touch-action: none;
}

.stage-hint {
  margin-top: 0.55rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.45rem;
  color: var(--subtle);
  font-size: 0.78rem;
}

.stage-fullscreen {
  width: auto;
  min-width: 6.2rem;
  padding: 0.34rem 0.6rem;
  font-size: 0.77rem;
}

.controls {
  grid-column: 2;
  max-height: 88vh;
  overflow: auto;
  display: grid;
  gap: 0.7rem;
}

.control-group {
  margin: 0;
  padding: 0.55rem 0.6rem 0.65rem;
  border-radius: 0.62rem;
  border: 1px solid rgba(102, 229, 187, 0.2);
  background: rgba(4, 9, 14, 0.46);
}

.control-group h2,
.control-group summary {
  margin: 0;
  font-size: 0.84rem;
  color: #d9f4ff;
  letter-spacing: 0.01em;
}

.control-group summary {
  cursor: pointer;
  user-select: none;
  list-style: none;
}

.control-group summary::-webkit-details-marker {
  display: none;
}

.control-group summary::before {
  content: "▸";
  margin-right: 0.4rem;
  color: var(--accent);
  display: inline-block;
  transform: translateY(-0.5px);
}

.control-group[open] summary::before {
  content: "▾";
}

label {
  display: block;
  margin: 0.46rem 0 0.22rem;
  font-size: 0.86rem;
}

label.has-help {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.label-main {
  flex: 1;
}

.help-chip {
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  border: 1px solid rgba(102, 229, 187, 0.45);
  color: #cfeaff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  line-height: 1;
  cursor: help;
  background: rgba(7, 18, 28, 0.85);
}

input[type="file"],
input[type="url"],
input[type="range"],
select,
button {
  width: 100%;
}

select,
button {
  border-radius: 0.58rem;
  padding: 0.52rem 0.62rem;
}

select {
  color: var(--fg);
  border: 1px solid rgba(102, 229, 187, 0.4);
  background: rgba(5, 12, 18, 0.82);
}

button {
  border: none;
  font-weight: 700;
  cursor: pointer;
}

.primary {
  color: #071116;
  background: linear-gradient(120deg, var(--accent), #43beff);
}

.secondary {
  color: var(--fg);
  border: 1px solid rgba(102, 229, 187, 0.44);
  background: rgba(5, 12, 18, 0.8);
}

.row {
  display: flex;
  gap: 0.55rem;
  margin-top: 0.55rem;
}

.time-row {
  margin-top: 0.18rem;
  display: flex;
  justify-content: space-between;
  color: var(--subtle);
  font-size: 0.79rem;
}

.hidden {
  display: none !important;
}

.record-result-wrap {
  margin-top: 0.55rem;
  padding: 0.52rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(102, 229, 187, 0.26);
  background: rgba(6, 12, 18, 0.68);
}

#record-result-video {
  width: 100%;
  margin-top: 0.2rem;
  border-radius: 0.42rem;
  background: #000;
}

#record-download-link {
  display: inline-block;
  margin-top: 0.42rem;
  color: var(--accent);
  font-size: 0.82rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.checkbox-row input {
  width: auto;
  margin: 0;
}

#status {
  margin: 0.7rem 0 0;
  padding: 0.6rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(102, 229, 187, 0.25);
  background: rgba(5, 10, 16, 0.75);
  color: #c8dff0;
  font-size: 0.74rem;
  min-height: 130px;
  white-space: pre-wrap;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .stage,
  .controls,
  .app-header {
    grid-column: 1;
  }

  .controls {
    max-height: none;
  }
}