:root {
  --levels-brand: #ff4742;
}

.app-main {
  padding-top: 24px;
  padding-bottom: 48px;
}

.app-hero {
  margin-bottom: 28px;
}

.app-hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 0.35em;
}

.app-hero code {
  font-family: var(--levels-font-mono);
  font-size: 0.9em;
  background: var(--levels-surface-muted);
  padding: 2px 6px;
  border-radius: var(--levels-radius-sm);
}

.app-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

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

.section-title {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.subsection-title {
  font-size: 0.95rem;
  margin: 20px 0 12px;
  color: var(--levels-text-dim);
  font-weight: var(--levels-weight-bold);
}

.required {
  color: var(--levels-brand);
}

.app-form {
  background: var(--levels-surface);
  border: 1px solid var(--levels-border);
  border-radius: var(--levels-radius);
  padding: var(--levels-padding);
}

.levels-textarea {
  width: 100%;
  resize: vertical;
  min-height: 96px;
}

.levels-check {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  font-weight: var(--levels-weight-medium);
  cursor: pointer;
}

.levels-check input {
  width: 18px;
  height: 18px;
  accent-color: var(--levels-brand);
}

.time-field.is-hidden {
  visibility: hidden;
  height: 0;
  margin: 0;
  overflow: hidden;
}

.form-error {
  margin: 0 0 12px;
  padding: 10px 12px;
  background: var(--levels-error-bg);
  border-radius: var(--levels-radius-sm);
  font-size: 0.9rem;
  color: var(--levels-text-alt);
}

.actions-row {
  flex-wrap: wrap;
  gap: 10px;
}

.actions-row .levels-btn,
.actions-row a.levels-btn {
  text-decoration: none;
}

.actions-row a.levels-btn.is-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.event-preview {
  padding: var(--levels-padding);
}

.preview-row {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--levels-border);
  font-size: 0.9rem;
}

.preview-row:last-child {
  border-bottom: none;
}

.preview-label {
  flex: 0 0 88px;
  font-weight: var(--levels-weight-bold);
  color: var(--levels-text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.preview-value {
  flex: 1;
  color: var(--levels-text-alt);
  word-break: break-word;
}

.preview-summary {
  font-size: 1.15rem;
  font-weight: var(--levels-weight-heavy);
  margin-bottom: 12px;
  color: var(--levels-text-alt);
}

.code-panel {
  margin-top: 20px;
}

.code-summary {
  cursor: pointer;
  font-weight: var(--levels-weight-bold);
  font-size: 0.9rem;
  color: var(--levels-text-dim);
  margin-bottom: 10px;
}

.code-block {
  margin: 0;
  padding: 14px;
  background: var(--levels-surface-muted);
  border: 1px solid var(--levels-border);
  border-radius: var(--levels-radius);
  font-family: var(--levels-font-mono);
  font-size: 0.72rem;
  line-height: 1.45;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 320px;
  overflow-y: auto;
}

.tips {
  margin-top: 20px;
  padding: var(--levels-padding);
}

.tips-title {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.tips ul {
  margin: 0;
  padding-left: 1.1em;
}

.tips li {
  font-size: 0.85rem;
  color: var(--levels-text-dim);
  margin-bottom: 8px;
  line-height: 1.45;
}

.tips code {
  font-family: var(--levels-font-mono);
  font-size: 0.85em;
  background: var(--levels-bg-alt);
  padding: 1px 5px;
  border-radius: 4px;
}

.app-footer {
  padding-bottom: 32px;
  font-size: 0.85rem;
  color: var(--levels-text-dim);
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--levels-text-alt);
  color: var(--levels-bg);
  padding: 10px 18px;
  border-radius: var(--levels-radius-pill);
  font-size: 0.9rem;
  font-weight: var(--levels-weight-bold);
  z-index: 100;
  animation: toast-in 0.2s ease;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(8px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}