.page { padding: 40px 20px; max-width: 1000px; margin: 0 auto; }
.page h1 { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.page .subtitle { color: #888; margin-bottom: 24px; font-size: 14px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  background: #0d0d0d; border: 1px solid #262626; border-radius: 12px; padding: 20px;
}

.group-label {
  display: block; font-size: 11px; font-weight: 600; color: #666;
  margin: 20px 0 10px; text-transform: uppercase; letter-spacing: 0.5px;
}

.ratio-row {
  display: flex; align-items: flex-end; gap: 10px; margin-bottom: 4px;
}
.field { flex: 1; }
.field label {
  display: block; font-size: 11px; color: #888; margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.field input {
  width: 100%; padding: 12px 14px; background: #141414; border: 1px solid #2a2a2a;
  border-radius: 8px; color: #fff; font-size: 16px; outline: none;
  font-family: 'SF Mono', Monaco, monospace; font-weight: 600;
}
.field input:focus { border-color: #ff4444; }
.sep { color: #666; font-size: 20px; padding-bottom: 14px; }

.simplified {
  margin-top: 10px; padding: 8px 12px; background: #141414; border-radius: 6px;
  color: #888; font-size: 12px; text-align: center; min-height: 18px;
}

.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.preset {
  padding: 8px 12px; background: #141414; border: 1px solid #333;
  color: #ccc; border-radius: 6px; font-size: 12px; cursor: pointer; transition: all 0.15s;
}
.preset:hover { border-color: #ff4444; color: #fff; }

.preview-card { display: flex; flex-direction: column; }
.preview-label {
  font-size: 11px; color: #888; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px;
}
.preview-stage {
  flex: 1; background: #141414; border-radius: 8px; min-height: 280px;
  display: flex; align-items: center; justify-content: center;
  padding: 20px; position: relative;
}
.preview-box {
  background: linear-gradient(135deg, #1f1f1f 0%, #2a2a2a 100%);
  border: 2px dashed #ff4444; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: width 0.3s, height 0.3s;
}
.preview-text {
  color: #ff4444; font-weight: 700; font-family: 'SF Mono', Monaco, monospace;
  font-size: 16px;
}
.preview-info {
  margin-top: 12px; color: #888; font-size: 12px;
  font-family: 'SF Mono', Monaco, monospace; text-align: center;
}

@media (max-width: 700px) {
  .grid { grid-template-columns: 1fr; }
  .preview-stage { min-height: 200px; }
}