/* ===========================================================
   Summer Coding Course — shared styles
   One file, used by every page. Friendly, game-flavoured.
   =========================================================== */

:root {
  --ink: #1f2430;
  --ink-soft: #4a5163;
  --paper: #f6f4ee;
  --card: #ffffff;
  --line: #e3ded3;
  --brand: #5b8c5a;       /* forest green */
  --brand-dark: #3f6b46;
  --gold: #d9a441;
  --sky: #4a7fb5;
  --danger: #c0563f;
  --shadow: 0 6px 18px rgba(31, 36, 48, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 18px;
}

.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 22px 80px;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--brand-dark);
  color: #fff;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar a { color: #fff; text-decoration: none; font-weight: 600; }
.topbar .home { font-size: 1.05rem; }
.topbar .home span { opacity: .8; font-weight: 400; }
.topbar nav a { margin-left: 16px; opacity: .9; font-size: .95rem; }
.topbar nav a:hover { opacity: 1; text-decoration: underline; }

/* ---------- Hero (homepage) ---------- */
.hero {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff;
  padding: 48px 22px 56px;
  text-align: center;
}
.hero h1 { font-size: 2.4rem; margin: 0 0 10px; }
.hero p { font-size: 1.15rem; max-width: 620px; margin: 0 auto; opacity: .95; }
.hero .tag {
  display: inline-block; background: rgba(255,255,255,.18);
  padding: 5px 14px; border-radius: 999px; font-size: .9rem; margin-bottom: 18px;
}

/* ---------- Week + day cards ---------- */
.week { margin: 40px 0 0; }
.week h2 {
  font-size: 1.4rem; color: var(--brand-dark);
  border-bottom: 3px solid var(--line); padding-bottom: 8px; margin-bottom: 6px;
}
.week .week-goal { color: var(--ink-soft); margin: 0 0 18px; font-size: .98rem; }

.days { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.day-card {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px; text-decoration: none;
  color: var(--ink); box-shadow: var(--shadow); transition: transform .12s ease, border-color .12s ease;
}
.day-card:hover { transform: translateY(-3px); border-color: var(--brand); }
.day-card .num { font-size: .8rem; font-weight: 700; color: var(--brand); letter-spacing: .04em; text-transform: uppercase; }
.day-card h3 { margin: 4px 0 4px; font-size: 1.08rem; }
.day-card p { margin: 0; font-size: .9rem; color: var(--ink-soft); }
.day-card.todo { opacity: .55; }
.day-card.todo:hover { transform: none; border-color: var(--line); cursor: default; }

/* ---------- Lesson page ---------- */
.lesson-head { padding: 34px 0 6px; }
.lesson-head .eyebrow { color: var(--brand); font-weight: 700; text-transform: uppercase; letter-spacing: .05em; font-size: .82rem; }
.lesson-head h1 { font-size: 2rem; margin: 6px 0 4px; }
.lesson-head .sub { color: var(--ink-soft); font-size: 1.05rem; margin: 0; }

.timepill {
  display: inline-flex; align-items: center; gap: 6px; background: #fff;
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
  font-size: .85rem; color: var(--ink-soft); margin-top: 14px;
}

h2.section { font-size: 1.35rem; margin: 36px 0 10px; color: var(--brand-dark); }
h3.step-title { font-size: 1.12rem; margin: 26px 0 6px; }

/* ---------- Callout boxes ---------- */
.box { border-radius: var(--radius); padding: 16px 18px; margin: 18px 0; border: 1px solid var(--line); background: var(--card); }
.box .label { font-weight: 700; display: block; margin-bottom: 4px; }
.box.mission { background: #eef5ec; border-color: #cfe3cb; }
.box.mission .label { color: var(--brand-dark); }
.box.tip { background: #eef4fa; border-color: #cfe0f0; }
.box.tip .label { color: var(--sky); }
.box.watch { background: #fbf0ec; border-color: #f0d3c9; }
.box.watch .label { color: var(--danger); }
.box.win { background: #fbf6e8; border-color: #ecdcae; }
.box.win .label { color: #b5871f; }

/* ---------- Numbered steps ---------- */
.steps { counter-reset: step; padding: 0; list-style: none; margin: 16px 0; }
.steps > li {
  position: relative; padding: 2px 0 18px 48px; margin: 0;
}
.steps > li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--brand); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center; font-size: .95rem;
}
.steps > li:not(:last-child)::after {
  content: ""; position: absolute; left: 15px; top: 34px; bottom: 4px;
  width: 2px; background: var(--line);
}

/* ---------- Code ---------- */
code { background: #ecebe5; padding: 2px 6px; border-radius: 5px; font-size: .92em; font-family: "Consolas", "SF Mono", monospace; }
pre {
  background: #272b36; color: #e6e6e6; padding: 16px 18px; border-radius: 12px;
  overflow-x: auto; font-size: .92rem; line-height: 1.55; margin: 14px 0;
  font-family: "Consolas", "SF Mono", monospace;
}
pre .c { color: #8a93a6; }   /* comment  */
pre .k { color: #c98ce0; }   /* keyword  */
pre .s { color: #9ed086; }   /* string   */
pre .n { color: #e6b96b; }   /* number   */
pre .f { color: #6fb8e0; }   /* function */

.codecap { font-size: .85rem; color: var(--ink-soft); margin: -6px 0 16px; }

kbd {
  background: #fff; border: 1px solid #c9c3b6; border-bottom-width: 2px;
  border-radius: 6px; padding: 1px 7px; font-size: .85em; font-family: inherit; color: var(--ink);
}

/* ---------- Checklist ---------- */
.check { list-style: none; padding: 0; margin: 14px 0; }
.check li { padding: 6px 0 6px 30px; position: relative; }
.check li::before {
  content: "☐"; position: absolute; left: 0; top: 4px; font-size: 1.2rem; color: var(--brand);
}

/* ---------- Footer nav ---------- */
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 46px; }
.pager a {
  text-decoration: none; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 18px; color: var(--ink); font-weight: 600;
  box-shadow: var(--shadow); flex: 1; max-width: 48%;
}
.pager a:hover { border-color: var(--brand); }
.pager a.next { text-align: right; }
.pager a .lab { display: block; font-size: .75rem; color: var(--ink-soft); font-weight: 400; }
.pager a.disabled { opacity: .4; pointer-events: none; }

.parent-note {
  background: #fff; border-left: 4px solid var(--gold); padding: 12px 16px;
  border-radius: 8px; margin: 26px 0; font-size: .92rem; color: var(--ink-soft);
}
.parent-note strong { color: var(--ink); }

footer.site { text-align: center; color: var(--ink-soft); font-size: .85rem; padding: 30px 0; }