:root {
  --bg: #f2f4f1;
  --panel: #fbfcf8;
  --text: #1f2a24;
  --muted: #5e6c63;
  --line: #d0d8d1;
  --accent: #2f6d4e;
  --error: #b42318;
  --warn: #b26d00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background:
    radial-gradient(circle at 20% 10%, #ffffff 0%, transparent 45%),
    linear-gradient(160deg, #edf2ee 0%, #e4ece5 100%);
  color: var(--text);
}

.app {
  display: grid;
  grid-template-columns: minmax(320px, 380px) 1fr;
  gap: 16px;
  min-height: 100vh;
  padding: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 8px 24px rgba(31, 42, 36, 0.06);
}

h1, h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.field span {
  color: var(--muted);
  font-size: 0.92rem;
}

.drop-zone {
  border: 2px dashed var(--line);
  border-radius: 10px;
  padding: 14px;
  background: #f8fbf7;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  cursor: pointer;
}

.drop-zone.is-hover {
  border-color: var(--accent);
  background: #edf7f1;
}

.drop-zone:focus-visible {
  outline: 2px solid #88b89d;
  outline-offset: 2px;
}

.drop-zone__text {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.drop-zone__input {
  margin: 0;
}

input[type="file"], select, button {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 0.95rem;
  background: #fff;
}

.actions {
  display: grid;
  gap: 8px;
}

button {
  cursor: pointer;
  background: linear-gradient(180deg, #3e8360 0%, #2f6d4e 100%);
  color: #fff;
  border: none;
}

button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.stats {
  margin-top: 12px;
  font-size: 0.92rem;
  color: var(--muted);
}

.status {
  margin-top: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--muted);
}

.status.info {
  color: var(--muted);
}

.status.success {
  color: var(--accent);
}

.status.error {
  color: var(--error);
}

.error-panel {
  margin-top: 12px;
  min-height: 22px;
}

.error-item {
  font-size: 0.9rem;
  margin: 4px 0;
}

.error {
  color: var(--error);
}

.warn {
  color: var(--warn);
}

.debug-log {
  margin-top: 10px;
  background: #f4f7f3;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  min-height: 90px;
  max-height: 220px;
  overflow: auto;
  font-size: 12px;
  color: #33423a;
}

.preview .svg-wrap {
  height: calc(100vh - 90px);
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

#previewSvg {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }

  .preview .svg-wrap {
    height: 60vh;
  }
}