:root {
  --bg: #f6f2e8;
  --panel: #fefcf7;
  --line: #d9cfbf;
  --ink: #1d2228;
  --ink-subtle: #5a625f;
  --accent: #2f6f56;
  --accent-2: #b36d2a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, #fff4d6 0%, transparent 32%),
    radial-gradient(circle at 95% 95%, #e8f4ed 0%, transparent 35%),
    linear-gradient(180deg, #f6f2e8 0%, #efe9db 100%);
}

.app-shell {
  max-width: 1500px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(90deg, #fffef9 0%, #f7f1e6 100%);
}

.topbar h1 {
  margin: 0;
  font-size: 1.28rem;
  letter-spacing: 0.02em;
}

.top-actions {
  display: flex;
  gap: 10px;
}

.btn {
  border: 1px solid #9b8c72;
  background: #fdf7ea;
  color: #2a2a2a;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.92rem;
  text-decoration: none;
}

.btn:hover {
  background: #f8f0dc;
}

.btn-primary {
  border-color: #255c47;
  background: linear-gradient(180deg, #3b7f64 0%, #2f6f56 100%);
  color: #ffffff;
}

.btn-primary:hover {
  background: linear-gradient(180deg, #36765e 0%, #295f4a 100%);
}

.btn-small {
  padding: 6px 10px;
  font-size: 0.82rem;
}

.btn:disabled,
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.layout-grid {
  display: grid;
  grid-template-columns: 320px 1fr 290px;
  gap: 14px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 1.02rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.field-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

label {
  font-size: 0.92rem;
  color: var(--ink-subtle);
}

input[type="number"] {
  width: 100%;
  border: 1px solid #ccbfa8;
  border-radius: 8px;
  background: #fffdf8;
  color: var(--ink);
  padding: 8px;
}

input[type="range"] {
  width: 100%;
}

.subtle {
  font-size: 0.85rem;
  color: var(--ink-subtle);
}

.panel-center {
  display: flex;
  flex-direction: column;
}

.preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  height: 100%;
}

.preview-card h3 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--ink-subtle);
}

canvas {
  width: 100%;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: repeating-conic-gradient(#f4efe6 0% 25%, #ece4d6 0% 50%) 50% / 20px 20px;
}

.preview-note {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.stat {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px dashed #d7ccb9;
  padding: 9px 0;
}

.stat span {
  color: var(--ink-subtle);
  font-size: 0.88rem;
}

.stat strong {
  font-size: 0.9rem;
  text-align: right;
}

.panel-actions {
  margin-top: 14px;
  display: grid;
  gap: 8px;
}

.status-bar {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(90deg, #fffef9 0%, #f7f2e8 100%);
  padding: 10px 12px;
  font-size: 0.9rem;
}

.status-warning {
  color: #7d4a15;
}

.status-error {
  color: #87252a;
}

@media (max-width: 1150px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}