:root {
  --mini-accent: #171717;
  --tf-font: 'Instrument Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  font-family: var(--tf-font);
}

.mini-shell {
  padding-block: var(--mini-space-6);
}

.mini-intro h1 {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 2.25rem;
  line-height: 1.1;
  margin-bottom: var(--mini-space-2);
}

.mini-intro p {
  color: #737373;
  font-size: 1.125rem;
  line-height: 1.5;
  margin: 0;
}

.fold-stage.mini-panel {
  position: relative;
  padding-left: calc(var(--mini-space-4) + 1.75rem);
  overflow: hidden;
}

.fold-stage.mini-panel::before {
  content: "";
  position: absolute;
  left: 1.75rem;
  top: var(--mini-space-4);
  bottom: var(--mini-space-4);
  width: 1px;
  background: #e5e5e5;
  border-radius: 1px;
}

.fold-sheet {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: left center;
  backface-visibility: hidden;
}

.fold-sheet.folding-out {
  transform: perspective(900px) rotateY(-92deg);
  opacity: 0;
}

.fold-sheet.folding-in {
  transform: perspective(900px) rotateY(92deg);
  opacity: 0;
}

.fold-prompt-header {
  margin-bottom: var(--mini-space-3);
}

.fold-step-number {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #737373;
  margin-bottom: var(--mini-space-1);
}

.fold-prompt-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0;
}

textarea {
  width: 100%;
  min-height: 128px;
  resize: vertical;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.6;
  padding: var(--mini-space-3);
  border: 1px solid var(--mini-border);
  border-radius: var(--mini-control-radius);
  background: var(--mini-surface);
  color: var(--mini-text);
}

textarea:focus {
  outline: 2px solid var(--mini-text);
  outline-offset: 2px;
}

label {
  font-weight: 500;
  color: var(--mini-text);
}

button {
  min-height: 44px;
  min-width: 44px;
  font-weight: 500;
}

button.secondary {
  background: transparent;
  color: var(--mini-text);
  border: 1px solid var(--mini-border);
}

button.secondary:hover {
  background: var(--mini-surface-muted);
}

.mini-actions {
  gap: var(--mini-space-2);
}

.decision-card {
  background: var(--mini-surface-muted);
  border: 1px solid var(--mini-border);
  padding: var(--mini-space-4);
}

.decision-block h3 {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #737373;
  margin: 0 0 var(--mini-space-1);
}

.decision-block p {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.decision-block + .decision-block {
  margin-top: var(--mini-space-4);
  padding-top: var(--mini-space-4);
  border-top: 1px solid var(--mini-border);
}

.mini-status {
  margin-top: var(--mini-space-3);
}

@media (max-width: 480px) {
  .mini-intro h1 {
    font-size: 1.875rem;
  }

  .fold-stage.mini-panel {
    padding-left: calc(var(--mini-space-3) + 1.25rem);
  }

  .fold-stage.mini-panel::before {
    left: 1.25rem;
  }

  .mini-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .mini-actions button {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fold-sheet,
  .fold-sheet.folding-out,
  .fold-sheet.folding-in {
    transition: opacity 0.05s ease;
    transform: none !important;
  }
}