:root {
  --bg-0: #f5f9f4;
  --bg-1: #ffffff;
  --bg-2: #e8efe6;
  --text: #1d2621;
  --muted: #5d6d62;
  --accent: #116149;
  --accent-2: #0e8b67;
  --danger: #9f2f2f;
  --line: #c7d6cd;
  --shadow: 0 16px 40px rgba(8, 33, 24, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1000px 420px at 10% -10%, #d8ead8 0%, transparent 70%),
    radial-gradient(900px 380px at 100% 0%, #d4ece0 0%, transparent 75%),
    linear-gradient(180deg, var(--bg-0), #f8fcf9 32%, #f1f7f3 100%);
}

code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.95em;
}

.app {
  width: min(1200px, 92vw);
  margin: 2rem auto 3rem;
  display: grid;
  gap: 1rem;
}

.hero {
  animation: fade-up 500ms ease-out;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
}

h1 {
  margin: 0.15rem 0 0.2rem;
  font-size: clamp(1.8rem, 3.7vw, 3rem);
  line-height: 1.05;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.panel {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-1) 88%, #f0f8f3 12%);
  box-shadow: var(--shadow);
  border-radius: 18px;
  padding: 1rem;
  animation: fade-up 500ms ease-out;
}

.controls {
  display: grid;
  gap: 0.7rem;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

#yamlFile {
  display: none;
}

.btn {
  font: inherit;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn.solid {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #f6fffb;
  border-color: transparent;
  font-weight: 700;
}

.btn.ghost {
  background: #f9fcf9;
  color: var(--text);
}

#yamlInput {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.45;
  background: #fcfefd;
}

.status {
  min-height: 1.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
  font-weight: 600;
}

.output-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.output-toolbar h2 {
  margin: 0;
}

.output-actions {
  display: flex;
  gap: 0.5rem;
}

.chart-wrap {
  margin-top: 0.7rem;
  border: 1px dashed var(--line);
  border-radius: 14px;
  background: #fcfffd;
  overflow: auto;
}

#chart {
  display: block;
  min-height: 220px;
  width: 100%;
}

.summary {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.summary strong {
  color: var(--text);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 760px) {
  .app {
    width: 94vw;
    margin-top: 1rem;
  }

  .panel {
    padding: 0.8rem;
  }

  #yamlInput {
    min-height: 145px;
  }
}