/* ── Python Phase 1 accent: warm gold/amber ── */
:root {
  --py:      #ffd166;
  --py-dim:  #ffaa33;
  --py-blue: #4db8ff;
  --py-glow: rgba(255,209,102,0.15);
}

.header-badge { background: linear-gradient(90deg, var(--py), var(--py-blue)); color: #0f0e17; }

header {
  background: linear-gradient(135deg, #1a1500 0%, #0f0e17 50%, #001628 100%);
}
header::before {
  background:
    radial-gradient(circle at 25% 55%, rgba(255,209,102,0.18) 0%, transparent 55%),
    radial-gradient(circle at 78% 30%, rgba(77,184,255,0.12) 0%, transparent 50%);
}
header h1 {
  background: linear-gradient(135deg, #fff 20%, var(--py) 55%, var(--py-blue));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.nav-item.active { border-left-color: var(--py); color: var(--text); }
.lesson-num      { color: var(--py); }

/* streak bar */
.streak-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px 18px;
  border-bottom: 1px solid var(--border);
}
.streak-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 4px;
}
.streak-node {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--border);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.streak-node.done {
  background: var(--py);
  border-color: var(--py);
  box-shadow: 0 0 8px rgba(255,209,102,0.6);
}
.streak-node.current {
  background: transparent;
  border-color: var(--py);
  animation: pulse-node 1.5s ease-in-out infinite;
}
@keyframes pulse-node {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,209,102,0.4); }
  50%      { box-shadow: 0 0 0 5px rgba(255,209,102,0); }
}

/* python-specific components */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0;
}
.compare-col { }
.compare-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 8px 8px 0 0;
}
.compare-label.java-lbl  { background: rgba(255,107,107,0.12); color: #ff6b6b; }
.compare-label.python-lbl { background: rgba(255,209,102,0.12); color: var(--py); }
.compare-col .code-block { margin-top: 0; border-radius: 0 0 12px 12px; border-top: none; }

.insight-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.insight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  border-top: 2px solid var(--py);
  transition: transform 0.2s;
}
.insight-card:hover { transform: translateY(-3px); }
.insight-card .ic-icon { font-size: 1.6rem; margin-bottom: 10px; }
.insight-card h5 { font-family: 'Fredoka One', cursive; font-size: 0.95rem; margin-bottom: 6px; color: var(--py); }
.insight-card p  { font-size: 0.83rem; color: var(--muted); line-height: 1.6; }

.repl-mini {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin: 18px 0;
}
.repl-mini-bar {
  background: #1c1929;
  padding: 8px 14px;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.repl-mini-dots { display: flex; gap: 5px; }
.repl-mini-dots span { width: 8px; height: 8px; border-radius: 50%; }
.repl-mini-dots span:nth-child(1) { background: #ff5f56; }
.repl-mini-dots span:nth-child(2) { background: #ffbd2e; }
.repl-mini-dots span:nth-child(3) { background: #27c93f; }
.repl-mini-title { font-family: 'Fira Code', monospace; font-size: 11px; color: var(--muted); }
.repl-mini pre  { padding: 16px 20px; font-family: 'Fira Code', monospace; font-size: 0.85rem; line-height: 1.9; overflow-x: auto; }

.try-it {
  background: linear-gradient(135deg, rgba(255,209,102,0.06), rgba(77,184,255,0.04));
  border: 1px solid rgba(255,209,102,0.2);
  border-radius: 14px;
  padding: 22px 26px;
  margin: 22px 0;
}
.try-it-label {
  font-size: 10px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase;
  color: var(--py); margin-bottom: 10px;
}
.try-it h4 { font-family: 'Fredoka One', cursive; font-size: 1.05rem; margin-bottom: 8px; }
.try-it p, .try-it li { font-size: 0.92rem; color: #ccc; }
.try-it ul { padding-left: 18px; }
.try-it li { margin-bottom: 5px; }

/* syntax */
.kw  { color: #c77dff; }
.fn  { color: #06d6a0; }
.str { color: #ffaa6b; }
.cm  { color: #4a4870; font-style: italic; }
.num { color: #ff6b9d; }
.cls { color: #ffd166; }
.bi  { color: #4db8ff; }
.out { color: #a7f3d0; }
.dec { color: #ff6b6b; }

.step-list { counter-reset: step; list-style: none; padding: 0; }
.step-list li {
  counter-increment: step;
  display: flex; gap: 14px;
  padding: 13px 0; border-bottom: 1px solid var(--border);
  font-size: 0.95rem; color: #d4d4e8;
}
.step-list li::before {
  content: counter(step);
  display: flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  background: linear-gradient(135deg, var(--py), var(--py-blue));
  color: #0f0e17; font-weight: 900; font-size: 12px;
  border-radius: 50%; flex-shrink: 0; margin-top: 2px;
}

.pill {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 800; letter-spacing: 0.5px;
}
.pill-gold   { background: rgba(255,209,102,0.12); color: var(--py); border: 1px solid rgba(255,209,102,0.3); }
.pill-blue   { background: rgba(77,184,255,0.12);  color: var(--py-blue); border: 1px solid rgba(77,184,255,0.3); }
.pill-green  { background: rgba(6,214,160,0.12);   color: #06d6a0; border: 1px solid rgba(6,214,160,0.3); }
.pill-red    { background: rgba(255,107,107,0.12); color: #ff6b6b; border: 1px solid rgba(255,107,107,0.3); }

@media (max-width: 680px) {
  .compare-grid { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .main { padding: 22px 16px; }
}