:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;

  --green-primary: #16a34a;
  --green-bg: #f0fdf4;
  --green-border: #bbf7d0;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

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

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  margin: 0;
  padding: 14px 16px 20px 16px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100vh;
}

/* Controls Bar */
.controls-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  padding: 6px 0 2px 0;
  width: 100%;
}

select {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 9px 14px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  cursor: pointer;
  outline: none;
  font-weight: 500;
  transition: border-color 0.15s ease;
}

select:hover {
  border-color: var(--border-hover);
}

select:focus {
  border-color: var(--text-main);
}

.btn-primary {
  background: var(--text-main);
  color: #ffffff;
  border: none;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-primary:hover {
  background: #1e293b;
  transform: translateY(-1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Summary Pill */
.summary-bar {
  display: flex;
  justify-content: center;
  padding: 4px 0 2px 0;
  transition: all 0.2s ease;
}

.summary-bar.hidden {
  display: none;
}

.summary-pill {
  background: var(--green-bg);
  border: 2px solid var(--green-border);
  padding: 14px 34px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 4px 16px rgba(22, 163, 74, 0.14);
}

.summary-highlight {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 900;
  color: #14532d;
  letter-spacing: -0.02em;
}

.summary-sep {
  color: #4ade80;
  font-size: 1.6rem;
  font-weight: 900;
}

#sum-times {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.35rem;
  color: #15803d;
  letter-spacing: -0.01em;
}

/* Main Grid */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  flex: 1;
  min-height: 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  overflow: hidden;
  height: 100%;
  min-height: 0;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.title-with-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.badge-red {
  background: #fef2f2;
  color: #dc2626;
  border: 1.5px solid #fecaca;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.badge-red.hidden {
  display: none;
}

.timer-badge {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  padding: 8px 18px;
  border-radius: 10px;
  background: #f8fafc;
  color: #0f172a;
  border: 1.5px solid #cbd5e1;
  letter-spacing: -0.02em;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.badge-green {
  background: var(--green-bg);
  color: #14532d;
  border: 2px solid #86efac;
  font-weight: 900;
  box-shadow: 0 1px 4px rgba(22, 163, 74, 0.12);
}

.card-body {
  padding: 18px 20px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

/* Code Box */
.code-box {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #1e293b;
  line-height: 1.6;
  white-space: pre;
  overflow-x: auto;
  margin: 0;
}

/* JSON Syntax Highlighting & Interactive Rows */
.json-row {
  display: block;
  padding: 1.5px 8px;
  border-radius: 4px;
  line-height: 1.6;
  white-space: pre;
  border-left: 2.5px solid transparent;
  transition: background-color 0.12s ease, border-left-color 0.12s ease;
}

.json-row:hover,
.json-row.row-hover {
  background-color: #f8fafc;
  border-left-color: #2563eb;
}

.json-key {
  color: #2563eb;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.json-sub {
  color: var(--text-main);
  font-weight: 500;
}

.json-punct {
  color: var(--text-main);
}

.json-val-str {
  color: var(--text-main);
  font-weight: 500;
}

.json-val-bool {
  color: var(--text-main);
  font-weight: 600;
}

.json-val-bool.bool-true,
.json-val-bool.bool-false {
  color: var(--text-main);
}

.json-val-num {
  color: var(--text-main);
  font-weight: 500;
}

.json-val-prob {
  color: var(--text-main);
  font-weight: 500;
  font-family: var(--font-mono);
}

.json-val-null {
  color: var(--text-main);
  font-style: italic;
}

.placeholder-text {
  color: var(--text-subtle);
  font-style: italic;
}

/* Parallel Results List */
.results-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.empty-state {
  color: var(--text-subtle);
  font-size: 0.88rem;
  text-align: center;
  padding-top: 100px;
}

.item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.82rem;
}

.item-key {
  font-family: var(--font-mono);
  font-weight: 600;
  color: #334155;
}

.item-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.item-val {
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.val-true {
  background: #dcfce7;
  color: #15803d;
}

.val-false {
  background: #fee2e2;
  color: #b91c1c;
}

.val-enum {
  background: #f1f5f9;
  color: #0f172a;
}

.item-prob {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #16a34a;
  background: var(--green-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  min-width: 48px;
  text-align: center;
}

/* Card Footer */
.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.text-green {
  color: var(--green-primary);
}

@media (max-width: 800px) {
  .grid {
    grid-template-columns: 1fr;
  }
}