/* PromptLang Chain Visualizer Styles */

:root {
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --card-border: #cbd5e1;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --success-border: #86efac;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  padding: 32px 24px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

header {
  margin-bottom: 24px;
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1e293b;
  display: flex;
  align-items: center;
  gap: 10px;
}

header .subtitle {
  color: var(--text-muted);
  font-size: 15px;
  margin-top: 4px;
}

/* Editor Section */
.editor-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  margin-bottom: 24px;
}

.editor-card label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  color: #334155;
}

textarea#source-input {
  width: 100%;
  height: 110px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  padding: 12px 14px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  resize: vertical;
  background: #fdfdfd;
  color: #1e293b;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea#source-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: #ffffff;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

button.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

button.btn-primary:hover {
  background: var(--primary-hover);
}

button.btn-secondary {
  background: #f1f5f9;
  color: #334155;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

button.btn-secondary:hover {
  background: #e2e8f0;
  border-color: #94a3b8;
}

/* Parse Error Alert Box */
.error-box {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-left: 5px solid var(--danger);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 24px;
  animation: fadeIn 0.15s ease-in-out;
}

.error-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.error-message {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: #991b1b;
  word-break: break-word;
}

/* Chain Visualization Section */
.visualization-section {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.visualization-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.visualization-title {
  font-size: 16px;
  font-weight: 600;
  color: #334155;
}

.chain-status-badge {
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.chain-status-badge.status-ok {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.chain-status-badge.status-mismatch {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger-border);
}

/* Summary line above the chain */
.chain-summary-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 10px 16px;
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
}

.summary-status {
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

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

.summary-time {
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-mono);
}

/* Cost Estimate Line */
.cost-estimate-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 10px 16px;
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: 8px;
  font-size: 13.5px;
  color: #334155;
  flex-wrap: wrap;
}

.cost-estimate-label {
  font-weight: 700;
  color: #0f172a;
}

.cost-estimate-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: #1e40af;
  background: #dbeafe;
  padding: 2px 7px;
  border-radius: 4px;
}

.cost-estimate-details {
  font-family: var(--font-mono);
  color: #475569;
  font-size: 12.5px;
}

.cost-estimate-note {
  color: #64748b;
  font-size: 12px;
  font-style: italic;
}

/* Diagram Flow Container - centered horizontally, wrapping on narrow screens */
.chain-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  row-gap: 24px;
  padding: 16px 8px;
}

/* Step Box Card */
.step-card {
  background: #ffffff;
  border: 1.5px solid var(--card-border);
  border-radius: 10px;
  padding: 14px 16px;
  min-width: 190px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  flex-shrink: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.step-card.step-card-error {
  border-color: var(--danger);
  border-width: 2px;
  box-shadow: 0 0 0 1px rgba(220, 38, 38, 0.2), 0 3px 8px rgba(220, 38, 38, 0.12);
}

.step-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 8px;
}

.step-tag {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: #64748b;
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.step-name {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
  font-family: var(--font-mono);
}

.step-ports {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.port-row {
  display: flex;
  align-items: center;
  font-size: 13px;
  gap: 6px;
}

.port-label {
  font-weight: 600;
  color: #64748b;
  width: 28px;
  text-transform: uppercase;
  font-size: 11px;
}

.type-pill {
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 2px 8px;
  border-radius: 5px;
  background: #f1f5f9;
  color: #334155;
  border: 1px solid #e2e8f0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.port-row.port-in .type-pill {
  background: #f0f9ff;
  border-color: #bae6fd;
  color: #0369a1;
}

.port-row.port-out .type-pill {
  background: #faf5ff;
  border-color: #e9d5ff;
  color: #7e22ce;
}

.port-in-error {
  font-size: 11px;
  font-weight: 600;
  color: var(--danger);
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: 4px;
  padding: 2px 7px;
  margin-top: 3px;
  margin-bottom: 2px;
  display: inline-block;
  font-family: var(--font-mono);
  line-height: 1.35;
  animation: fadeIn 0.15s ease-in-out;
}

.limit-badge {
  font-size: 11px;
  font-weight: 600;
  color: #b45309;
  background: #fef3c7;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid #fde68a;
  margin-left: 2px;
}

/* Arrow Connector (Horizontal / Linear) */
.chain-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  max-width: 280px;
  padding: 8px 6px;
  flex-shrink: 0;
}

.arrow-line-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.arrow-svg {
  display: block;
}

.chain-connector.connector-ok .arrow-svg {
  color: var(--success);
}

.chain-connector.connector-error .arrow-svg {
  color: var(--danger);
}

/* Short message on red arrow */
.connector-error-message {
  margin-top: 8px;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: #991b1b;
  font-size: 12px;
  line-height: 1.35;
  padding: 6px 10px;
  border-radius: 6px;
  text-align: center;
  font-weight: 500;
  box-shadow: 0 1px 2px rgba(220, 38, 38, 0.08);
}

/* DAG Branching Visual Layout */
.dag-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 0;
}

.dag-stage-row {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  gap: 32px;
  width: 100%;
  flex-wrap: wrap;
}

.dag-connectors-row {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  gap: 32px;
  width: 100%;
  flex-wrap: wrap;
  margin: 10px 0;
}

.dag-branch-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 220px;
  min-width: 190px;
  max-width: 300px;
  padding: 4px 6px;
  flex-shrink: 0;
}

.dag-branch-connector.connector-ok .arrow-svg {
  color: var(--success);
}

.dag-branch-connector.connector-error .arrow-svg {
  color: var(--danger);
}

.dag-arrow-label {
  font-size: 11px;
  font-family: var(--font-mono);
  color: #64748b;
  margin-bottom: 2px;
  font-weight: 600;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 40px 16px;
  color: var(--text-muted);
  font-size: 14px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}