/* =========================
   PYTHON PLAYGROUND STYLES
========================= */
:root {
  color-scheme: light;
  --green: #15803d;
  --green-dark: #166534;
  --blue: #2563eb;
  --dark: #14213d;
  --text: #475569;
  --muted: #64748b;
  --surface: #ffffff;
  --page: #f8fafc;
  --border: #e2e8f0;
  --code-bg: #0f172a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--dark);
  background: var(--page);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}
a { color: var(--blue); }
button, textarea { font: inherit; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, textarea:focus-visible, pre:focus-visible {
  outline: 3px solid #f97316;
  outline-offset: 3px;
}
.playground-header {
  min-height: 76px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 14px max(4%, calc((100% - 1120px) / 2));
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--dark);
  font-size: 1.25rem;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}
.brand > span:last-child { color: var(--green); }
.brand-icon {
  display: inline-grid;
  place-items: center;
  width: 39px;
  height: 39px;
  margin-right: 3px;
  border-radius: 10px;
  color: #fff;
  background: var(--blue);
  font-size: 0.95rem;
}
.playground-header nav { display: flex; flex-wrap: wrap; gap: 22px; }
.playground-header nav a { color: var(--dark); font-size: 0.92rem; font-weight: 700; text-decoration: none; }
.playground-header nav a:hover { color: var(--green); }
.page-shell { width: min(1120px, 92%); margin: 0 auto; }
.intro { padding: 52px 0 30px; text-align: center; }
.eyebrow { margin: 0 0 8px; color: var(--green); font-size: 0.78rem; font-weight: 900; letter-spacing: 1.5px; }
.intro h1 { margin: 0 0 12px; font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.15; letter-spacing: -1px; }
.intro h1 span { font-size: 0.85em; }
.intro > p:not(.eyebrow) { max-width: 720px; margin: 0 auto 14px; color: var(--text); }
.runtime-note { display: inline-block; padding: 8px 13px; border-radius: 10px; background: #eff6ff; color: #1d4ed8 !important; font-size: 0.88rem; }
.runtime-note[data-state="ready"] { background: #dcfce7; color: #166534 !important; }
.runtime-note[data-state="error"] { background: #fee2e2; color: #991b1b !important; }
.workspace { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 22px; align-items: stretch; }
.editor-panel, .output-panel { min-width: 0; padding: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05); }
.panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 18px; }
.panel-kicker { color: var(--muted); font-size: 0.7rem; font-weight: 900; letter-spacing: 1.4px; }
.panel-heading h2 { margin: 2px 0 0; font-size: 1.45rem; }
.language-pill { padding: 5px 10px; border-radius: 30px; background: #dbeafe; color: #1d4ed8; font-size: 0.78rem; font-weight: 800; }
.editor-panel label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 700; }
#python-code {
  display: block;
  width: 100%;
  min-height: 300px;
  resize: vertical;
  padding: 17px;
  border: 1px solid #334155;
  border-radius: 12px;
  color: #e2e8f0;
  background: var(--code-bg);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.65;
  tab-size: 4;
}
.help-text, .run-hint, .output-footnote { color: var(--muted); font-size: 0.8rem; }
.help-text { margin: 10px 0 18px; }
.help-text code, .example-card code { padding: 1px 4px; border-radius: 4px; background: #f1f5f9; }
.editor-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.run-button, .reset-button, .clear-button { min-height: 43px; padding: 10px 16px; border: 0; border-radius: 10px; font-weight: 800; }
.run-button { color: #fff; background: var(--green); }
.run-button:hover:not(:disabled) { background: var(--green-dark); }
.run-button:disabled { cursor: not-allowed; opacity: 0.55; }
.reset-button, .clear-button { color: var(--dark); background: #e2e8f0; }
.reset-button:hover, .clear-button:hover { background: #cbd5e1; }
.run-hint { margin: 12px 0 0; }
.output-panel { display: flex; flex-direction: column; }
.clear-button { min-height: 35px; padding: 7px 12px; font-size: 0.85rem; }
.output-content {
  flex: 1;
  min-height: 300px;
  max-height: 520px;
  overflow: auto;
  margin: 0;
  padding: 17px;
  border-radius: 12px;
  color: #e2e8f0;
  background: var(--code-bg);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.output-content[data-state="error"] { color: #fecaca; }
.output-footnote { margin: 12px 0 0; }
.examples-section { padding: 62px 0 38px; }
.section-title { margin-bottom: 22px; text-align: center; }
.section-title h2 { margin: 4px 0 8px; font-size: clamp(1.6rem, 3vw, 2.1rem); }
.section-title > p:last-child { margin: 0; color: var(--text); }
.example-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.example-card {
  display: flex;
  min-height: 180px;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--dark);
  background: #fff;
  text-align: left;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.example-card:hover { transform: translateY(-3px); border-color: #86efac; box-shadow: 0 10px 24px rgba(15, 23, 42, 0.07); }
.example-icon { font-size: 1.8rem; }
.example-card strong { font-size: 0.96rem; }
.example-card > span:last-child { color: var(--text); font-size: 0.82rem; }
.learning-note { display: flex; align-items: flex-start; gap: 16px; margin: 10px 0 55px; padding: 24px; border: 1px solid #bfdbfe; border-radius: 16px; background: #eff6ff; }
.learning-note > span { font-size: 1.8rem; }
.learning-note h2 { margin: 0 0 5px; font-size: 1.2rem; }
.learning-note p { margin: 0 0 10px; color: var(--text); }
.learning-note a { font-weight: 800; }
.page-footer { padding: 22px 4%; border-top: 1px solid var(--border); background: #fff; color: var(--muted); text-align: center; font-size: 0.82rem; }
.page-footer p { margin: 0; }
@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  .example-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .playground-header { align-items: flex-start; flex-direction: column; gap: 12px; padding: 14px 4%; }
  .playground-header nav { gap: 16px; }
  .intro { padding-top: 36px; }
  .editor-panel, .output-panel { padding: 17px; }
  #python-code, .output-content { min-height: 250px; font-size: 0.82rem; }
  .example-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .example-card { min-height: 165px; padding: 14px; }
  .learning-note { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}