/* EvoLearn app — ink & teal */
:root {
  --ink: #0E1420; --panel: #151D2E; --panel2: #101A2E; --line: #24304a;
  --text: #E8EDF6; --mut: #93A1B8; --cyan: #2DD4BF; --amber: #E8A33D;
  --red: #F85149; --green: #3FB950;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--ink); color: var(--text); font-family: "Segoe UI", system-ui, sans-serif; line-height: 1.6; }
#app { display: flex; min-height: 100vh; }

/* Sidebar */
#sidebar { width: 300px; flex-shrink: 0; background: var(--panel2); border-right: 1px solid var(--line); padding: 26px 20px; position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; }
.brand { font-size: 1.5rem; font-weight: 800; color: #fff; }
.brand span { color: var(--cyan); }
.course-name { color: var(--mut); font-size: .82rem; letter-spacing: 1px; text-transform: uppercase; margin: 4px 0 18px; }
.progress-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.progress-bar { flex: 1; height: 8px; background: var(--panel); border-radius: 4px; overflow: hidden; border: 1px solid var(--line); }
#progress-fill { height: 100%; width: 0%; background: var(--cyan); transition: width .4s; }
#progress-label { color: var(--cyan); font-size: .8rem; font-weight: 700; }
#lesson-nav { flex: 1; }
#lesson-nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 9px; color: var(--mut); text-decoration: none; font-size: .9rem; margin-bottom: 4px; border: 1px solid transparent; }
#lesson-nav a .n { width: 26px; height: 26px; border-radius: 50%; background: var(--panel); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; font-size: .75rem; font-weight: 700; flex-shrink: 0; }
#lesson-nav a.active { background: var(--panel); color: #fff; border-color: var(--line); }
#lesson-nav a.done .n { background: var(--cyan); color: var(--ink); border-color: var(--cyan); }
#lesson-nav a.locked { opacity: .42; cursor: not-allowed; }
#lesson-nav a.locked .n { content: "🔒"; }
.side-foot { color: #55647F; font-size: .75rem; margin-top: 16px; }
.side-foot a { color: #55647F; }

/* Content */
#content { flex: 1; padding: 44px 56px; max-width: 980px; }
.kicker { color: var(--cyan); font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase; font-size: .75rem; }
h1 { font-family: Cambria, Georgia, serif; font-size: 2.2rem; color: #fff; margin: 8px 0 6px; line-height: 1.2; }
.subtitle { color: var(--mut); font-style: italic; font-size: 1.05rem; margin-bottom: 30px; }
h2 { font-family: Cambria, Georgia, serif; font-size: 1.35rem; color: #fff; margin: 34px 0 10px; }
p { color: var(--mut); margin-bottom: 14px; font-size: .98rem; }
p b, li b { color: var(--text); }
ul.points { margin: 0 0 14px 22px; color: var(--mut); }
ul.points li { margin-bottom: 8px; font-size: .95rem; }
.story { background: var(--panel); border-left: 3px solid var(--amber); border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 20px 0; }
.story .tag { color: var(--amber); font-size: .72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.story h3 { color: #fff; font-size: 1.05rem; margin: 4px 0 8px; font-family: Cambria, serif; }
.story p { font-size: .92rem; margin-bottom: 8px; }
.keybox { background: var(--panel2); border: 1px solid var(--cyan); border-radius: 12px; padding: 18px 22px; margin: 20px 0; }
.keybox .tag { color: var(--cyan); font-size: .72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.keybox p { color: var(--text); font-size: 1.02rem; font-style: italic; margin: 6px 0 0; font-family: Cambria, serif; }

/* Widget zone */
.widget-zone { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin: 26px 0; }
.widget-zone .wtag { color: var(--cyan); font-size: .72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; display: block; }
button { background: var(--panel2); color: var(--text); border: 1px solid var(--line); padding: 9px 18px; border-radius: 9px; cursor: pointer; font-size: .9rem; font-weight: 600; font-family: inherit; }
button:hover { border-color: var(--cyan); }
button.primary { background: var(--cyan); color: var(--ink); border-color: var(--cyan); }
button:disabled { opacity: .45; cursor: not-allowed; }
select, input[type=number], input[type=text] { background: var(--panel2); color: var(--text); border: 1px solid var(--line); padding: 8px 12px; border-radius: 8px; font-size: .9rem; font-family: inherit; }

/* Quiz */
.quiz { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 26px; margin: 34px 0; }
.quiz h2 { margin-top: 0; }
.q-item { margin-bottom: 22px; }
.q-item .qt { color: var(--text); font-weight: 600; margin-bottom: 10px; }
.q-item label { display: block; background: var(--panel2); border: 1px solid var(--line); border-radius: 9px; padding: 10px 14px; margin-bottom: 7px; cursor: pointer; color: var(--mut); font-size: .92rem; }
.q-item label:hover { border-color: var(--cyan); }
.q-item label.correct { border-color: var(--green); color: var(--green); }
.q-item label.wrong { border-color: var(--red); color: var(--red); }
.q-item input { margin-right: 10px; }
.quiz-result { border-radius: 12px; padding: 18px 22px; margin-top: 18px; font-weight: 600; }
.quiz-result.pass { background: #12331d; color: var(--green); }
.quiz-result.fail { background: #3d1b1b; color: var(--red); }

/* Dice line (adapted from simulator) */
.dl-controls { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.dl-line { display: flex; gap: 0; align-items: stretch; flex-wrap: wrap; margin-bottom: 14px; }
.dl-st { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; min-width: 96px; text-align: center; }
.dl-st.con { border-color: var(--red); }
.dl-st h4 { font-size: .7rem; color: var(--mut); font-weight: 600; }
.dl-st .die { font-size: 1.25rem; min-height: 26px; }
.dl-st .mv { color: var(--cyan); font-size: .72rem; }
.dl-buf { display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 0 7px; min-width: 46px; }
.dl-buf b { font-size: 1.1rem; color: var(--amber); }
.dl-buf small { color: var(--mut); font-size: .58rem; letter-spacing: 1px; }
.dl-kpis { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.dl-kpi { background: var(--panel2); border: 1px solid var(--line); border-radius: 9px; padding: 8px 14px; }
.dl-kpi b { display: block; font-size: 1.15rem; color: var(--cyan); }
.dl-kpi.bad b { color: var(--red); }
.dl-kpi span { color: var(--mut); font-size: .68rem; }
.dl-note { color: var(--amber); font-size: .8rem; margin-bottom: 8px; }

/* Small interactive bits */
.opt-row { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 14px; }
.opt-row button.sel-t { background: #0d3b34; border-color: var(--cyan); color: var(--cyan); }
.opt-row button.sel-i { background: #3d2f12; border-color: var(--amber); color: var(--amber); }
.opt-row button.sel-oe { background: #3d1b1b; border-color: var(--red); color: var(--red); }
.opt-row button.sel-none { background: #222b3d; border-color: var(--mut); color: var(--text); }
.feedback { border-radius: 9px; padding: 10px 14px; margin-top: 10px; font-size: .9rem; display: none; }
.feedback.good { background: #12331d; color: var(--green); display: block; }
.feedback.bad { background: #3d1b1b; color: var(--red); display: block; }
.feedback.info { background: #1a2a3d; color: var(--text); display: block; }
table.mini { width: 100%; border-collapse: collapse; font-size: .85rem; margin: 10px 0; }
table.mini th { color: var(--mut); font-weight: 600; text-align: left; padding: 7px 9px; border-bottom: 1px solid var(--line); font-size: .78rem; }
table.mini td { padding: 7px 9px; border-bottom: 1px solid var(--line); color: var(--text); }
table.mini tr.pick { cursor: pointer; }
table.mini tr.pick:hover td { background: var(--panel2); }
table.mini tr.chosen td { background: #0d3b34; }
table.mini tr.wrongpick td { background: #3d1b1b; }

.lesson-nav-btns { display: flex; justify-content: space-between; margin: 40px 0 20px; }
.locked-msg { text-align: center; padding: 80px 20px; color: var(--mut); }
.locked-msg .lock { font-size: 3rem; }
.pass-banner { background: #12331d; border: 1px solid var(--green); color: var(--green); border-radius: 12px; padding: 16px 22px; margin: 20px 0; font-weight: 600; }

/* Certificate */
.cert { background: #fff; color: #14213A; border-radius: 14px; padding: 50px; text-align: center; margin: 30px 0; }
.cert .cb { font-size: .8rem; letter-spacing: 3px; text-transform: uppercase; color: #0F766E; font-weight: 700; }
.cert h2 { color: #14213A; font-size: 2rem; margin: 12px 0; }
.cert .name { font-family: Cambria, serif; font-size: 1.8rem; font-style: italic; border-bottom: 2px solid #E1E8F5; display: inline-block; padding: 0 30px 6px; margin: 10px 0 16px; }
.cert p { color: #55627A; }
@media print {
  #sidebar, .lesson-nav-btns, button { display: none !important; }
  body, #content { background: #fff !important; color: #000; }
}
@media (max-width: 860px) {
  #app { flex-direction: column; }
  #sidebar { width: 100%; height: auto; position: static; }
  #content { padding: 24px 18px; }
}