/* CodersBreeze Learn — light editorial aesthetic, mobile-first */
:root {
  --bg: #faf8f4;
  --panel: #ffffff;
  --panel2: #f3efe7;
  --border: #e4ddd0;
  --text: #23201a;
  --muted: #6f6a5e;
  --accent: #b3541e;
  --accent-soft: rgba(179, 84, 30, .1);
  --green: #1e7a4c;
  --blue: #1d5fb8;
  --serif: Georgia, "Times New Roman", serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.6;
}
h1, h2, h3, h4 { margin: 0; line-height: 1.25; }
a { color: var(--accent); }

/* ---------- header ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--border);
  background: var(--panel); flex-wrap: wrap;
}
.brand { display: flex; gap: 10px; align-items: center; }
.brand-tick { color: var(--accent); font-size: 22px; letter-spacing: -4px; }
.brand-logo { width: 40px; height: 40px; border-radius: 10px; flex: none; }
.brand h1 { font-size: 19px; letter-spacing: .5px; }
.tagline { margin: 2px 0 0; font-size: 12px; color: var(--muted); }
.hubs { display: flex; gap: 8px; }
.hub {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--panel); color: var(--text); text-decoration: none; font-size: 14px; font-weight: 600;
}
.hub svg { width: 16px; height: 16px; flex: none; }
.hub:not(.active) { border-color: #cfc6b4; }
.hub.active { background: var(--text); color: var(--bg); border-color: var(--text); font-weight: 600; }

/* ---------- layout ---------- */
main { padding: 20px 16px 32px; max-width: 860px; margin: 0 auto; }
.crumbs { font-size: 13px; margin: 0 0 12px; }
.crumbs a { text-decoration: none; }
.hero h2 { font-family: var(--serif); font-size: 30px; margin-bottom: 8px; }
.hero p { color: var(--muted); font-size: 16px; max-width: 640px; }
.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 28px 0 12px; }

/* ---------- track cards ---------- */
.track-grid { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 680px) { .track-grid { grid-template-columns: 1fr 1fr; } }
.track-card {
  display: block; background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px; text-decoration: none; color: inherit;
  transition: transform .15s, box-shadow .15s;
}
.track-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(35,32,26,.08); }
.track-emoji { font-size: 34px; }
.track-card h4 { font-size: 20px; margin: 8px 0 4px; }
.track-tag { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.track-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.pill {
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 20px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent);
}
.pill.ghost { background: transparent; color: var(--muted); border-color: var(--border); font-weight: 400; }
.track-cta { font-weight: 700; color: var(--accent); font-size: 14px; }

/* ---------- guide detail ---------- */
.guide-hero { border-bottom: 2px solid var(--text); padding-bottom: 16px; margin-bottom: 8px; }
.guide-hero .track-emoji { font-size: 44px; }
.guide-hero h2 { font-family: var(--serif); font-size: 34px; margin: 8px 0 6px; }
.guide-lede { font-size: 18px; color: var(--muted); margin: 0 0 12px; font-family: var(--serif); font-style: italic; }
.guide-updated { font-size: 12px; color: var(--muted); }
.toc {
  display: flex; gap: 8px; overflow-x: auto; padding: 12px 0; margin-bottom: 8px;
  border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--bg); z-index: 5;
}
.toc a {
  white-space: nowrap; font-size: 13px; font-weight: 600; text-decoration: none;
  color: var(--muted); padding: 6px 12px; border: 1px solid var(--border); border-radius: 20px;
  background: var(--panel);
}
.toc a:hover { color: var(--accent); border-color: var(--accent); }
.guide-section { padding: 20px 0; border-bottom: 1px solid var(--border); }
.guide-section:last-child { border-bottom: none; }
.guide-section h3 { font-family: var(--serif); font-size: 24px; margin-bottom: 10px; }
.guide-section p.lead { font-size: 17px; }
.day-list { margin: 0; padding-left: 20px; }
.day-list li { margin-bottom: 8px; }
.skill-tier { margin-bottom: 18px; }
.skill-tier h4 { font-size: 14px; text-transform: uppercase; letter-spacing: .8px; color: var(--accent); margin-bottom: 8px; }
.skill { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.skill b { display: block; font-size: 15px; }
.skill span { font-size: 13px; color: var(--muted); }
.phase { background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 10px; padding: 16px; margin-bottom: 14px; }
.phase-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-bottom: 6px; }
.phase-head h4 { font-size: 17px; }
.phase-weeks { font-size: 12px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: .5px; }
.phase .goal { font-style: italic; color: var(--muted); margin: 0 0 8px; }
.phase ul { margin: 0 0 8px; padding-left: 20px; font-size: 14px; }
.phase li { margin-bottom: 4px; }
.phase .proj { font-size: 14px; background: var(--panel2); border-radius: 8px; padding: 8px 12px; margin: 0; }
.phase .proj b { color: var(--green); }
.res { display: block; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; text-decoration: none; color: inherit; }
.res:hover { border-color: var(--accent); }
.res b { color: var(--accent); font-size: 15px; }
.res span { display: block; font-size: 13px; color: var(--muted); }
.check { list-style: none; margin: 0; padding: 0; }
.check li { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px 10px 40px; margin-bottom: 8px; position: relative; font-size: 14px; }
.check li::before { content: "☐"; position: absolute; left: 14px; color: var(--accent); font-size: 16px; }
.next-tracks { margin-top: 24px; }

/* ---------- about / footer ---------- */
.about ul { margin: 0; padding-left: 20px; color: var(--muted); }
.about li { margin-bottom: 8px; }
.about strong { color: var(--text); }
footer {
  max-width: 860px; margin: 0 auto; padding: 18px 16px 40px;
  font-size: 12px; color: var(--muted); border-top: 1px solid var(--border);
}
.foot-meta a { text-decoration: none; margin-right: 12px; }
.empty { color: var(--muted); text-align: center; padding: 30px 10px; }