:root {
  font-family: system-ui, -apple-system, sans-serif;
  color: #1a1a1a;
  background: #fafafa;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

header h1 {
  margin: 0 0 4px;
  font-size: 1.5rem;
}

.sub {
  margin: 0 0 20px;
  color: #555;
  font-size: 0.9rem;
}

.dropzone {
  border: 2px dashed #bbb;
  border-radius: 8px;
  padding: 36px 16px;
  text-align: center;
  color: #666;
  cursor: pointer;
  background: #fff;
  transition:
    border-color 0.15s,
    background 0.15s;
}

.dropzone:hover,
.dropzone.over {
  border-color: #4a90d9;
  background: #f0f7ff;
}

.actions {
  margin-top: 12px;
}

.actions button {
  font: inherit;
  font-size: 0.85rem;
  padding: 6px 14px;
  border: 1px solid #c8c8c8;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

.actions button:hover:not(:disabled) {
  border-color: #4a90d9;
  color: #1a5fa8;
}

.actions button:disabled {
  opacity: 0.5;
  cursor: default;
}

.error {
  margin-top: 16px;
  padding: 10px 14px;
  border-radius: 6px;
  background: #fdecea;
  color: #a12;
  font-size: 0.9rem;
}

.figure-wrap {
  margin-top: 20px;
  background: #fff;
  border: 1px solid #e2e2e2;
  border-radius: 8px;
  padding: 8px;
}

/* FigureView fills its positioned parent, mirroring the numbl plot viewer. */
.figure-inner {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 420px;
}