/* =========================
   ChainAtlasOne Learn — standalone CSS
   (does NOT depend on /style.css)
   ========================= */

/* ---------- Tokens ---------- */
:root{
  --max: 1080px;

  --bg: #ffffff;
  --panel: #ffffff;
  --panel2: #fbfbfd;
  --text: #0b0e14;
  --muted: rgba(15, 18, 28, .62);
  --stroke: rgba(15, 18, 28, .10);
  --stroke2: rgba(15, 18, 28, .14);

  --shadow: 0 16px 50px rgba(0,0,0,.08);
  --shadow2: 0 10px 30px rgba(0,0,0,.06);

  --green: #19c37d;
  --red: #ff5d5d;
  --blue: #7aaaff;
  --amber: #f2c14e;

  --cardR: 18px;
  --blur: blur(16px);
}

:root[data-theme="dark"]{
  --bg: #070a12;
  --panel: rgba(255,255,255,.04);
  --panel2: rgba(255,255,255,.03);
  --text: rgba(235,240,248,1);
  --muted: rgba(235,240,248,.65);
  --stroke: rgba(255,255,255,.10);
  --stroke2: rgba(255,255,255,.14);
  --shadow: 0 24px 70px rgba(0,0,0,.55);
  --shadow2: 0 14px 40px rgba(0,0,0,.35);
}

/* ---------- Base ---------- */
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

#app{
  max-width: var(--max);
  margin: 22px auto;
  padding: 0 18px 24px;
}

.hidden{ display:none; }
.muted{ color: var(--muted); }

.card{
  background: linear-gradient(180deg, var(--panel), var(--panel2));
  border: 1px solid var(--stroke);
  border-radius: var(--cardR);
  box-shadow: var(--shadow2);
}

/* ---------- Buttons / Pills ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor: pointer;
  text-decoration:none;
  font-weight: 800;
  font-size: 13px;
}
.btn:hover{ border-color: var(--stroke2); }
.btnGhost{ background: transparent; }
.btnIcon{
  width: 42px;
  height: 42px;
  display:grid;
  place-items:center;
}
.iconMoon{ font-size: 16px; opacity:.9; }

.statusPill{
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.02);
  font-size: 12px;
  color: var(--muted);
  white-space:nowrap;
}

.pill{
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.02);
  font-weight: 950;
  font-size: 12px;
}
.pill.pos{ color: var(--green); border-color: rgba(25,195,125,.35); }
.pill.neg{ color: var(--red); border-color: rgba(255,93,93,.35); }

/* ---------- Topbar ---------- */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  min-width:0;
}
.logo{
  height: 52px;
  width: auto;
  display:block;
}

.logo-dark{ display:block; }
.logo-light{ display:none; }

html[data-theme="dark"] .logo-dark{ display:block; }
html[data-theme="dark"] .logo-light{ display:none; }
html[data-theme="light"] .logo-dark{ display:none; }
html[data-theme="light"] .logo-light{ display:block; }

.topActions{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

/* ---------- Learn Layout ---------- */
.learnContent{
  margin-top: 14px;
}

.learnHero{
  padding: 18px;
  display:grid;
  grid-template-columns: 1.2fr .9fr;
  gap: 14px;
  margin-bottom: 14px;
}

.learnTitle{
  margin:0;
  font-size: 32px;
  font-weight: 950;
  letter-spacing: .2px;
}
.learnSubtitle{
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.45;
  font-size: 14px;
}

.learnMetaRow{
  display:flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap:wrap;
}

.kpiInline{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding: 10px 12px;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  background: rgba(255,255,255,.02);
  min-width: 220px;
}
.kpiInlineLabel{
  font-size: 12px;
  color: var(--muted);
  letter-spacing:.08em;
}
.kpiInlineValue{
  font-weight: 950;
  font-variant-numeric: tabular-nums;
}

.learnHeroPanel{
  padding: 14px 14px 12px;
  border: 1px solid var(--stroke);
  border-radius: 16px;
  background: rgba(255,255,255,.02);
}
.learnPanelTitle{
  font-size: 12px;
  letter-spacing:.12em;
  font-weight: 950;
  color: var(--muted);
  margin-bottom: 8px;
}
.learnPanelList{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.5;
  font-size: 13px;
}
.learnPanelList li{ margin: 6px 0; }

/* ---------- Lessons Grid ---------- */
.learnGrid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.lessonCard{
  padding: 14px;
}

.lessonTop{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
}

.lessonTopLeft{
  min-width:0;
}

.lessonTag{
  display:inline-flex;
  align-items:center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.02);
  font-size: 12px;
  font-weight: 950;
  color: var(--muted);
  letter-spacing: .06em;
  margin-bottom: 8px;
}

.lessonTitleSmall{
  margin:0;
  font-size: 16px;
  font-weight: 950;
}

.lessonDesc{
  margin: 10px 0 12px;
  color: var(--muted);
  line-height: 1.45;
  font-size: 13px;
}

.lessonActions{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap:wrap;
}

.pillSmall{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255,255,255,.02);
  font-weight: 900;
  font-size: 12px;
  color: var(--muted);
}
.pillSmall .check{
  width: 16px;
  height: 16px;
  border-radius: 999px;
  display:grid;
  place-items:center;
  border: 1px solid var(--stroke);
  color: var(--green);
  font-weight: 950;
}

/* Mini illustration canvas */
.lessonMiniCanvas{
  width: 120px;
  height: 54px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(0,0,0,.04);
  display:block;
}

/* ---------- Lesson page (wide card) ---------- */
.lessonCardWide{
  padding: 16px;
}

.lessonTopRow{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 14px;
  flex-wrap:wrap;
  margin-bottom: 12px;
}

.lessonInner{
  padding: 14px;
  margin-top: 12px;
}

.learnFooterTitle{
  font-weight: 950;
  letter-spacing:.02em;
  margin-bottom: 8px;
}

.learnFooterText{
  margin:0;
  color: var(--muted);
  line-height: 1.55;
  font-size: 13px;
}

/* Lesson hero canvas */
.lessonHeroCanvas{
  width: 100%;
  height: 140px;
  margin-top: 12px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: rgba(0,0,0,.04);
  display:block;
}

/* ---------- Footer card ---------- */
.learnFooterCard{
  padding: 14px;
}

/* ---------- Tooltip ---------- */
.tooltip{
  position:fixed;
  z-index:9999;
  max-width: 340px;
  padding: 10px 12px;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  background: rgba(0,0,0,.35);
  color: var(--text);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow);
  font-size: 13px;
  pointer-events:none;
}
:root[data-theme="light"] .tooltip{ background: rgba(255,255,255,.85); color:#111; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .learnHero{ grid-template-columns: 1fr; }
  .learnGrid{ grid-template-columns: 1fr; }
}

@media (max-width: 640px){
  #app{
    margin: 14px auto;
    padding: 0 12px 18px;
  }
  .topbar{
    flex-wrap: wrap;
    gap: 10px;
  }
  .brand{ flex: 1 1 100%; }
  .logo{ height: 46px; }
  .topActions{ flex: 1 1 100%; justify-content:flex-start; }
  .statusPill{ flex: 0 0 auto; }
  .lessonMiniCanvas{ width: 110px; height: 52px; }
  .lessonHeroCanvas{ height: 120px; }
}