:root {
  color-scheme: dark;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  background: #0f1117;
  color: #f7efe7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 12%, rgba(255, 170, 115, 0.18), transparent 28rem),
    radial-gradient(circle at 82% 20%, rgba(121, 184, 255, 0.18), transparent 24rem), #0f1117;
}

.app-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.hero {
  margin-bottom: 28px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: 1.35rem;
  line-height: 1.25;
}

.hero p {
  max-width: 720px;
  color: #d8d0c8;
  line-height: 1.6;
}

.usage-list {
  margin: 12px 0 0;
  padding-left: 1.2em;
  color: #d8d0c8;
  line-height: 1.65;
}

.simulator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  align-items: stretch;
}

.viewport-card,
.control-card {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  overflow: hidden;
}

.viewport-card {
  position: relative;
  min-height: 620px;
}

#stackchan-viewport {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 620px;
  cursor: default;
  touch-action: none;
}

#stackchan-viewport:active {
  cursor: default;
}

#simulator-screen {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 320px;
  height: 240px;
}

.control-card {
  padding: 24px;
}

.control-card h2 {
  margin-bottom: 8px;
}

#simulator-info {
  min-height: 3em;
  color: #bfb7ad;
  line-height: 1.5;
}

button,
.file-button,
.sample-download {
  border: 0;
  border-radius: 999px;
  padding: 12px 16px;
  background: #f7efe7;
  color: #19130f;
  font-weight: 700;
  cursor: pointer;
  transition:
    transform 140ms ease,
    background 140ms ease;
}

button:hover,
.file-button:hover,
.sample-download:hover {
  transform: translateY(-1px);
  background: #ffd2aa;
}

.mod-installer {
  display: grid;
  gap: 10px;
  margin: 20px 0 24px;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

button[aria-pressed="true"] {
  background: #8bd3ff;
}

.file-button,
.sample-download {
  display: inline-flex;
  justify-content: center;
  text-align: center;
  text-decoration: none;
}

#mod-archive-input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
  pointer-events: none;
}

#mod-install-status {
  min-height: 2.8em;
  margin: 0;
  color: #bfb7ad;
  font-size: 0.9rem;
  line-height: 1.45;
}

.camera-controls {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
}

#browser-camera-button {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  background: #ffb36b;
  color: #21160f;
  font-weight: 700;
  cursor: pointer;
}

#browser-camera-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

#browser-camera-status {
  margin: 0;
  color: #a9b9c9;
  font-size: 0.82rem;
  line-height: 1.5;
}

#trace-log {
  height: 420px;
  margin: 16px 0 0;
  padding: 12px;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.24);
  color: #d8d0c8;
  font-family: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 880px) {
  .simulator-layout {
    grid-template-columns: 1fr;
  }

  .viewport-card,
  #stackchan-viewport {
    min-height: 480px;
  }
}