/* ============================================================
   Szkoła AI · kurs — player
   "niebiański dotyk, spokój umysłu" — cisza i flow czytania
   tokeny jak landing: var(--sa-bg,#070a0f) · var(--sa-txt,#e8eef6) · akcent var(--sa-acc,#34e2a0)
   ============================================================ */

:root {
  --bg: var(--sa-bg,#070a0f);
  --bg-soft: var(--sa-bg2,#0b0f17);
  --panel: var(--sa-surface,#111826);
  --line: var(--sa-surface2,#1e2940);
  --text: var(--sa-txt,#e8eef6);
  --dim: var(--sa-muted,#94a3b8);
  --accent: var(--sa-acc,#34e2a0);
  --accent-warm: var(--sa-acc-tint,#a7f3d6);
  --accent-soft: rgba(var(--sa-acc-rgb,52,226,160), 0.12);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --sidebar-w: 260px;
  --topbar-h: 56px;
  /* szerokość kolumny treści (player szerszy — „oddychający") */
  --content-w: clamp(720px, 78vw, 1180px);
  /* komfortowy max dla samych akapitów wewnątrz szerokiej kolumny */
  --prose-w: 80ch;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.mono { font-family: var(--mono); }
.dim { color: var(--dim); }

/* ---------------- aurora — oddychające tło ---------------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  will-change: transform;
}

.aurora-a {
  width: 60vmax; height: 60vmax;
  top: -25vmax; left: -15vmax;
  background: radial-gradient(circle, rgba(var(--sa-acc-rgb,52,226,160), 0.08), transparent 65%);
}

.aurora-b {
  width: 55vmax; height: 55vmax;
  bottom: -25vmax; right: -15vmax;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.06), transparent 65%);
}

.aurora-c {
  width: 45vmax; height: 45vmax;
  top: 30%; left: 45%;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.06), transparent 65%);
}

/* ---------------- reading progress ---------------- */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 300;
  background: transparent;
}

.read-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--sa-acc,#34e2a0), var(--sa-acc-tint,#a7f3d6));
}

/* ---------------- top bar ---------------- */
.kurs-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  z-index: 200;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 0.75rem;
  padding: 0 1.25rem;
  background: rgba(10, 14, 20, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.kurs-topbar .brand {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  flex: 0 1 auto;
}

.kurs-topbar .brand:hover { color: var(--accent); }

.kurs-topbar .lms-link {
  margin-left: auto;
  flex: 0 0 auto;
  white-space: nowrap;
  color: var(--dim);
  text-decoration: none;
  font-size: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  transition: color 0.25s ease, border-color 0.25s ease;
}

/* skrócone etykiety na wąskich ekranach */
.lms-short { display: none; }
@media (max-width: 560px) {
  .kurs-topbar { gap: 0.5rem; padding: 0 0.85rem; }
  .brand-suffix { display: none; }
  .lms-full { display: none; }
  .lms-short { display: inline; }
}

.kurs-topbar .lms-link:hover { color: var(--accent); border-color: var(--accent); }

.drawer-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.1rem;
  width: 38px; height: 38px;
  cursor: pointer;
}

/* ---------------- shell layout ---------------- */
.kurs-shell {
  position: relative;
  z-index: 1;
  display: flex;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}

/* ---------------- sidebar ---------------- */
.kurs-sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.5rem 1.25rem 2rem;
  border-right: 1px solid var(--line);
  background: rgba(15, 20, 29, 0.45);
  /* cienki, ciemny scrollbar — komfort przy 24 modułach */
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.kurs-sidebar::-webkit-scrollbar { width: 8px; }
.kurs-sidebar::-webkit-scrollbar-track { background: transparent; }
.kurs-sidebar::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.kurs-sidebar::-webkit-scrollbar-thumb:hover {
  background: #3a455a;
  background-clip: padding-box;
}

.sidebar-head {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.ring { transform: rotate(-90deg); }

.ring-track, .ring-fill {
  fill: none;
  stroke-width: 4;
}

.ring-track { stroke: var(--line); }

.ring-fill {
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-dasharray: 175.93; /* 2πr, r=28 */
  stroke-dashoffset: 175.93;
  transition: stroke-dashoffset 0.6s ease;
}

.ring-label { display: flex; flex-direction: column; }
.ring-label .mono { font-size: 1.05rem; }
.ring-label .dim { font-size: 0.75rem; }

.module-list { display: flex; flex-direction: column; gap: 0.5rem; }

/* Każdy moduł = osobne pudełko (karta): „MODUŁ I" + tytuł + ✓/🔒. */
.module-link {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "num badge" "title title";
  gap: 0.15rem 0.5rem;
  align-items: center;
  padding: 0.6rem 0.7rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.02);
  color: var(--dim);
  font: inherit;
  font-size: 0.9rem;
  text-align: left;
  cursor: pointer;
  position: relative;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.module-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateX(2px);
}

.module-link .m-num {
  grid-area: num;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent-soft);
}

.module-link .m-title { grid-area: title; font-size: 0.86rem; line-height: 1.3; color: inherit; }

.module-link .m-badge { grid-area: badge; flex: 0 0 auto; font-size: 0.85rem; }

.module-link .m-done { color: var(--accent); opacity: 0; transition: opacity 0.3s ease; }
.module-link.done .m-done { opacity: 1; }
.module-link.done { border-color: rgba(var(--sa-acc-rgb,52,226,160), 0.35); }

.module-link.active {
  color: var(--text);
  background: linear-gradient(180deg, rgba(var(--sa-acc-rgb,52,226,160), 0.16), rgba(var(--sa-acc-rgb,52,226,160), 0.06));
  border-color: var(--accent);
  box-shadow: 0 0 18px rgba(var(--sa-acc-rgb,52,226,160), 0.18);
}
.module-link.active .m-num { color: var(--accent); }

/* Moduł zablokowany (mini-raty) — dashed + kłódka */
.module-link.is-locked { border-style: dashed; opacity: 0.72; }
.module-link.is-locked .m-num { color: var(--dim); }
.module-link.is-locked:hover { opacity: 1; border-color: var(--accent-soft); }

/* Ekran treści: moduł zablokowany */
.locked-card {
  text-align: center;
  max-width: 520px;
  margin: 1.5rem auto;
  padding: 2rem 1.2rem;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
}
.locked-ic { font-size: 2.4rem; margin-bottom: 0.4rem; }
.locked-lead { font-size: 1.05rem; color: var(--text); margin: 0.2rem 0 0.6rem; }
.locked-btn {
  display: inline-block;
  margin-top: 0.8rem;
  padding: 0.7rem 1.3rem;
  border-radius: 10px;
  font-family: var(--mono);
  font-weight: 700;
  text-decoration: none;
  color: var(--sa-bg,#070a0f);
  background: linear-gradient(180deg, var(--accent-soft), var(--accent));
  box-shadow: 0 6px 20px rgba(var(--sa-acc-rgb,52,226,160), 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.locked-btn { border: none; cursor: pointer; }
.locked-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(var(--sa-acc-rgb,52,226,160), 0.35); }

/* Modal potwierdzenia zakupu modułu */
.unlock-ov {
  position: fixed; inset: 0; z-index: 999;
  display: flex; align-items: center; justify-content: center;
  background: rgba(4, 7, 14, 0.72);
  backdrop-filter: blur(3px);
  padding: 1rem;
  animation: unlockfade 0.18s ease;
}
@keyframes unlockfade { from { opacity: 0; } to { opacity: 1; } }
.unlock-box {
  width: 100%; max-width: 440px;
  background: linear-gradient(180deg, #0d121b, var(--sa-bg,#070a0f));
  border: 1px solid rgba(var(--sa-acc-rgb,52,226,160), 0.5);
  border-radius: 16px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  padding: 0 1.4rem 1.5rem;
  text-align: center;
  overflow: hidden;
}
.unlock-head {
  margin: 0 -1.4rem 1rem;
  padding: 0.6rem 1rem;
  background: rgba(var(--sa-acc-rgb,52,226,160), 0.08);
  border-bottom: 1px solid rgba(var(--sa-acc-rgb,52,226,160), 0.25);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-align: left;
}
.unlock-ic { font-size: 2.2rem; margin: 0.4rem 0 0.2rem; }
.unlock-cover { display: block; width: 100%; max-width: 300px; margin: 0.2rem auto 0.7rem; border-radius: 12px; border: 1px solid rgba(var(--sa-acc-rgb,52,226,160), 0.3); box-shadow: 0 8px 26px rgba(0, 0, 0, 0.45); }
.unlock-title { font-size: 1.2rem; color: var(--text); margin: 0.2rem 0 0.5rem; }
.unlock-sub { color: var(--dim); font-size: 0.92rem; line-height: 1.45; margin: 0 0 1rem; }
.unlock-actions { display: flex; flex-direction: column; gap: 0.55rem; }
.unlock-yes {
  padding: 0.75rem 1.2rem; border: none; border-radius: 10px; cursor: pointer;
  font-family: var(--mono); font-weight: 700; font-size: 0.95rem; color: var(--sa-bg,#070a0f);
  background: linear-gradient(180deg, var(--accent-soft), var(--accent));
  box-shadow: 0 6px 20px rgba(var(--sa-acc-rgb,52,226,160), 0.3); transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.unlock-yes:hover { transform: translateY(-1px); box-shadow: 0 9px 28px rgba(var(--sa-acc-rgb,52,226,160), 0.42); }
.unlock-no {
  padding: 0.6rem 1.2rem; border-radius: 10px; cursor: pointer;
  background: transparent; border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--dim); font-family: var(--mono); font-size: 0.9rem; transition: color 0.15s ease, border-color 0.15s ease;
}
.unlock-no:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.35); }

.drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(5, 8, 12, 0.6);
  opacity: 0;
}

/* ---------------- main / lesson ---------------- */
.kurs-main {
  flex: 1;
  min-width: 0;
  padding: 3rem 2rem 5rem;
}

.lesson {
  max-width: var(--content-w);
  margin: 0 auto;
}

.lesson-kicker {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.lesson-title {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.25;
  margin-bottom: 2.25rem;
  background: linear-gradient(135deg, #ffffff, #e8d9c8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #fff;
}

/* --- typografia czytelnicza --- */
.lesson-body {
  font-size: 1.1875rem;
  line-height: 1.85;
}

/* Akapity i listy trzymają komfortowy max ~80ch (czytelność),
   ale bloki strukturalne (h2, pre/.term, .ai-demo, table) idą na pełną
   szerokość kolumny treści — szeroko, „oddychająco". */
.lesson-body > p,
.lesson-body > ul,
.lesson-body > ol,
.lesson-body > blockquote,
.lesson-body > h3 {
  max-width: var(--prose-w);
}

.lesson-body h2 {
  font-size: 1.45rem;
  line-height: 1.35;
  margin: 2.75rem 0 1rem;
  background: linear-gradient(120deg, #ffffff, #f3e8da);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: #fff;
}

.lesson-body h3 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
  color: var(--text);
}

.lesson-body p { margin-bottom: 1.35rem; }

.lesson-body ul, .lesson-body ol {
  margin: 0 0 1.35rem 1.4rem;
}

.lesson-body li { margin-bottom: 0.5rem; }

.lesson-body strong { color: #fff; }
.lesson-body a { color: var(--accent); }
/* Jasne boxy treści (inline color:#1c2430): pogrubienia NIE dziedziczą białego —
   ciemna zieleń marki, czytelna na jasnym tle (fix "biały na białym", oba motywy). */
.lesson-body [style*="color:#1c2430"] strong,
.lesson-body [style*="color:#1c2430"] b { color: #0d6b46; }
.lesson-body [style*="color:#1c2430"] a { color: #0d6b46; text-decoration: underline; }

/* --- pre jako mini-terminal --- */
.lesson-body .term {
  margin: 0 0 1.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--sa-bg2,#0d1118);
  overflow: hidden;
}

.lesson-body .term::before {
  content: "";
  display: block;
  height: 30px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle 5px at 18px 15px, #ff5f56 4.5px, transparent 5px),
    radial-gradient(circle 5px at 38px 15px, #ffbd2e 4.5px, transparent 5px),
    radial-gradient(circle 5px at 58px 15px, #27c93f 4.5px, transparent 5px);
}

.lesson-body .term pre {
  margin: 0;
  padding: 1rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--accent-warm);
  white-space: pre-wrap;
  overflow-x: auto;
}

/* --- blockquote --- */
.lesson-body blockquote {
  margin: 0 0 1.5rem;
  padding: 0.25rem 0 0.25rem 1.25rem;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--dim);
}

/* --- challenge card (ostatni h2 z 🏆) --- */
.lesson-body .challenge-card {
  margin: 3rem 0 1rem;
  padding: 1.75rem 1.75rem 0.5rem;
  border: 1px solid rgba(var(--sa-acc-rgb,52,226,160), 0.35);
  border-radius: 16px;
  background: rgba(var(--sa-acc-rgb,52,226,160), 0.05);
  box-shadow: 0 0 40px rgba(var(--sa-acc-rgb,52,226,160), 0.12);
}

.lesson-body .challenge-card h2 { margin-top: 0; }

/* --- tabele: pełna szerokość kolumny treści --- */
.lesson-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
}

.lesson-body th,
.lesson-body td {
  text-align: left;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--line);
}

.lesson-body th {
  color: #fff;
  font-weight: 600;
  border-bottom: 1px solid var(--accent);
}

/* ============================================================
   Interaktywne demka prompt → wynik (.ai-demo)
   „prowadzenie za rękę": kursant widzi DOKŁADNIE prompt i wynik.
   Bloki idą na pełną szerokość kolumny treści.
   ============================================================ */
.lesson-body .ai-demo {
  margin: 2.25rem 0;
}

.lesson-body .ai-demo--ready {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  overflow: hidden;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.25);
}

.ai-demo-bar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.ai-demo-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(var(--sa-acc-rgb,52,226,160), 0.6);
  flex: 0 0 auto;
}

.ai-demo-label {
  font-size: 0.8rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.ai-demo-box {
  margin: 1rem;
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
}

/* prompt — tło var(--sa-bg2,#0d1118) z lewą pomarańczową krawędzią */
.ai-demo-promptbox {
  background: var(--sa-bg2,#0d1118);
  border-left: 3px solid var(--accent);
}

/* odpowiedź — delikatnie jaśniejsza */
.ai-demo-respbox {
  background: var(--sa-surface,#141a24);
  border-left: 3px solid rgba(var(--sa-acc-rgb,52,226,160), 0.35);
}

.ai-demo-head {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 0.45rem;
}

.ai-demo-head.ai-demo-ai { color: var(--accent); }

.ai-demo-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.ai-demo-promptbox .ai-demo-text { color: var(--accent-warm); }

/* migający kursor podczas pisania */
.ai-demo-text.typing::after {
  content: "▌";
  color: var(--accent);
  margin-left: 1px;
  animation: ai-demo-caret 0.9s steps(1) infinite;
}

@keyframes ai-demo-caret {
  0%, 50% { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

.ai-demo-resp p { margin: 0 0 0.75rem; }
.ai-demo-resp p:last-child { margin-bottom: 0; }
.ai-demo-resp ul, .ai-demo-resp ol { margin: 0 0 0.75rem 1.2rem; }

.ai-demo-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0 1rem 0.25rem;
}

.ai-demo-run {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--sa-bg,#1a1206);
  background: linear-gradient(135deg, var(--sa-acc,#34e2a0), #ffab5e);
  border: none;
  border-radius: 999px;
  padding: 0.55rem 1.3rem;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.15s ease, box-shadow 0.25s ease;
  box-shadow: 0 0 0 rgba(var(--sa-acc-rgb,52,226,160), 0);
}

.ai-demo-run:hover:not(:disabled) {
  filter: brightness(1.07);
  box-shadow: 0 0 22px rgba(var(--sa-acc-rgb,52,226,160), 0.35);
}

.ai-demo-run:active:not(:disabled) { transform: translateY(1px); }
.ai-demo-run:disabled { opacity: 0.55; cursor: default; }

.ai-demo-thinking {
  font-size: 0.85rem;
  color: var(--dim);
  font-family: var(--mono);
}

.ai-demo-dots i {
  font-style: normal;
  animation: ai-demo-blink 1.4s infinite both;
}
.ai-demo-dots i:nth-child(2) { animation-delay: 0.2s; }
.ai-demo-dots i:nth-child(3) { animation-delay: 0.4s; }

@keyframes ai-demo-blink {
  0%, 80%, 100% { opacity: 0.2; }
  40% { opacity: 1; }
}

/* ---------------- ukończenie ---------------- */
.lesson-complete {
  margin: 3.5rem 0 2rem;
  display: flex;
  justify-content: center;
}

.complete-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 1.6rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
}

.complete-btn:hover { border-color: var(--accent); color: #fff; }

.complete-btn .check {
  width: 20px; height: 20px;
  flex: 0 0 auto;
}

.complete-btn .check-path {
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 26;
  stroke-dashoffset: 26;
}

.complete-btn.is-done {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(var(--sa-acc-rgb,52,226,160), 0.18);
}

.complete-btn.is-done .check-path { stroke-dashoffset: 0; }

/* ---------------- prev / next ---------------- */
.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.nav-btn {
  font: inherit;
  font-size: 0.9rem;
  color: var(--dim);
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 1.2rem;
  cursor: pointer;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.nav-btn:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }

.nav-btn:disabled { opacity: 0.35; cursor: default; }

/* ---------------- desktop ≥1100: grid (sidebar | treść) ---------------- */
@media (min-width: 1100px) {
  .kurs-shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
  }
  /* treść wypełnia całą dostępną kolumnę gridu, nie zamknięta w wąskiej kolumnie */
  .kurs-main { min-width: 0; }
}

/* ---------------- tablet + mobile drawer (<1100px) ---------------- */
@media (max-width: 1099px) {
  .drawer-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .kurs-sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    bottom: 0;
    height: auto;
    z-index: 180;
    background: var(--bg-soft);
    transform: translateX(-100%);
    box-shadow: 8px 0 30px rgba(0, 0, 0, 0.4);
  }

  .drawer-backdrop.visible { display: block; }

  /* treść full-width z komfortowym paddingiem */
  .kurs-main { padding: 2.5rem 2rem 4rem; }
  .lesson { max-width: 100%; }
}

@media (max-width: 767px) {
  .kurs-main { padding: 2rem 1.25rem 4rem; }
}

/* ---------------- reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
  .aurora-blob { filter: blur(100px); } /* statyczna aurora, bez ruchu (JS też respektuje) */
}

/* ============================================================
   EFEKT 3 — XP / poziom + LEVEL UP (flagi xp, levelup)
   Panel budowany przez kurs.js tylko gdy SHOOL_FX.xp === true.
   ============================================================ */
.xp-panel {
  margin: -0.25rem 0 1.1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.xp-row { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.xp-lv { color: var(--accent); font-size: 1.05rem; font-weight: 700; }
.xp-mods { font-size: 0.75rem; }
.xp-bar {
  margin: 0.45rem 0 0.3rem;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.xp-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--sa-acc,#34e2a0), var(--sa-acc-tint,#a7f3d6));
  transition: width 0.5s ease;
}
.xp-next { font-size: 0.7rem; letter-spacing: 0.02em; }

/* LEVEL UP — pomarańczowy badge na środku, ~1.5 s (usuwany przez JS) */
.levelup-badge {
  position: fixed;
  left: 50%;
  top: 22%;
  transform: translateX(-50%);
  z-index: 9998;
  padding: 0.7rem 1.4rem;
  border-radius: 12px;
  background: rgba(var(--sa-acc-rgb,52,226,160), 0.16);
  border: 1px solid var(--accent);
  color: var(--sa-acc-tint,#a7f3d6);
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 0 38px rgba(var(--sa-acc-rgb,52,226,160), 0.4);
  pointer-events: none;
}

/* toast odznaki — prawy dolny róg */
.badge-toast {
  position: fixed;
  right: 1.25rem;
  bottom: 4.6rem;
  z-index: 9998;
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  background: var(--panel);
  border: 1px solid var(--accent);
  color: var(--accent-warm);
  font-size: 0.82rem;
  pointer-events: none;
}

/* ============================================================
   EFEKT 2 — KONSOLA KOMEND (flaga playerConsole)
   Przycisk + panel tworzone przez kurs-console.js tylko gdy flaga on.
   ============================================================ */
.kc-toggle {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 9000;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--accent);
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
.kc-toggle:hover { border-color: var(--accent); }
.kc-toggle.is-open { background: var(--accent); color: var(--sa-bg,#070a0f); border-color: var(--accent); }

.kc-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 4.6rem;
  z-index: 9001;
  width: min(480px, calc(100vw - 2.5rem));
  max-height: min(420px, 60vh);
  display: flex;
  flex-direction: column;
  background: rgba(8, 11, 16, 0.97);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55);
}
.kc-panel[hidden] { display: none; }

.kc-out {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.75rem 0.85rem;
  font-size: 0.82rem;
  line-height: 1.5;
}
.kc-line { white-space: pre-wrap; word-break: break-word; color: var(--text); }
.kc-echo { color: var(--dim); }
.kc-sys  { color: var(--accent-warm); }
.kc-ok   { color: var(--accent); }
.kc-err  { color: #ff5f56; }
.kc-art  { color: #3ddc84; }

.kc-inputline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.kc-prompt { color: var(--accent); font-size: 0.8rem; white-space: nowrap; }
.kc-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 0.85rem;
}

/* ============================================================================
 * CERTYFIKAT UKOŃCZENIA (js/kurs-cert.js · flaga SHOOL_FX.certificate)
 * Nakładka „wydruk z terminala" — monospace, ramka, akcent var(--sa-acc,#34e2a0).
 * ========================================================================== */
.cert-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(4, 6, 10, 0.86);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}
.cert-box {
  width: min(720px, 96vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  background: rgba(8, 11, 16, 0.98);
  border: 1px solid var(--accent);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(var(--sa-acc-rgb,52,226,160), 0.12);
}
.cert-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.cert-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(var(--sa-acc-rgb,52,226,160), 0.7);
}
.cert-bar-label { flex: 1; color: var(--accent-warm); font-size: 0.82rem; }
.cert-x {
  background: transparent;
  border: none;
  color: var(--dim);
  font-size: 0.95rem;
  cursor: pointer;
  line-height: 1;
}
.cert-x:hover { color: var(--text); }

.cert-screen {
  padding: 1rem 1.1rem 1.2rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--text);
  font-size: 0.85rem;
  line-height: 1.5;
}
.cert-line { white-space: pre-wrap; word-break: break-word; margin-bottom: 0.35rem; }
.cert-sys { color: var(--accent-warm); }
.cert-ok  { color: var(--accent); }
.cert-err { color: #ff5f56; }

.cert-print {
  margin: 0.4rem 0 0.9rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: clamp(0.6rem, 1.7vw, 0.92rem);
  line-height: 1.35;
  white-space: pre;
  overflow-x: auto;
  text-shadow: 0 0 8px rgba(var(--sa-acc-rgb,52,226,160), 0.18);
}

.cert-namewrap {
  margin: 0.9rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.cert-namelabel { color: var(--accent); font-size: 0.85rem; }
.cert-nameinput {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.5rem 0.6rem;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}
.cert-nameinput:focus { border-color: var(--accent); }

.cert-ask { margin: 0.6rem 0 0.5rem; color: var(--text); }
.cert-ask b { color: var(--accent); }

.cert-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}
.cert-btn {
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 0.5rem 0.85rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.cert-btn:hover { background: var(--accent); color: var(--sa-bg,#070a0f); }

/* === TRYB JASNY playera (przełącznik jaśniej/ciemniej, wspólny localStorage 'shool-theme') === */
html[data-theme="light"]{
  --bg:#F4F7FB; --bg-soft:#E9EEF5; --panel:#FFFFFF; --line:#D6DEEA;
  --text:#0B1220; --dim:#48566B; --accent:#0FA877; --accent-warm:#0E96BC; --accent-soft:rgba(15,168,119,.14);
}
html[data-theme="light"] body{ background:var(--bg); }
html[data-theme="light"] .aurora{ opacity:.35; }
html[data-theme="light"] .kurs-topbar{ background:rgba(255,255,255,.93); }
html[data-theme="light"] .kurs-sidebar{ background:rgba(255,255,255,.6); }
html[data-theme="light"] .module-link{ border-color:rgba(15,23,42,.10); background:rgba(15,23,42,.02); }
.theme-toggle{position:fixed; right:18px; bottom:18px; z-index:300; width:46px; height:46px; border-radius:50%;
  border:1px solid var(--line); background:var(--panel); color:var(--text); font-size:20px; cursor:pointer;
  box-shadow:0 10px 30px rgba(0,0,0,.3); display:grid; place-items:center; transition:transform .15s, border-color .15s}
.theme-toggle:hover{transform:translateY(-2px); border-color:var(--accent)}
/* light mode: dobicie ciemnych rgba topbar/sidebar */
html[data-theme="light"] .kurs-topbar{ background:rgba(255,255,255,.95)!important; border-bottom-color:#D6DEEA!important; }
html[data-theme="light"] .kurs-topbar .brand{ color:#0B1220!important; }
html[data-theme="light"] .kurs-sidebar{ background:#EEF2F8!important; }
html[data-theme="light"] .read-progress{ background:transparent; }

/* === light mode: poprawki nagłówków + pozycja przycisku === */
html[data-theme="light"] .lesson-title{
  background:linear-gradient(135deg,#0B1220,#0F766E)!important;
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:#0B1220!important;
}
html[data-theme="light"] .lesson-body h2,
html[data-theme="light"] .lesson-body h3,
html[data-theme="light"] .lesson-body h4{ color:#0B1220!important; -webkit-text-fill-color:#0B1220!important; }
html[data-theme="light"] .lesson-body{ color:#1F2937; }
html[data-theme="light"] .lesson-kicker{ color:#0F766E!important; }
/* przycisk jaśniej/ciemniej w LEWY dół playera — nie nachodzi na ikonę konsoli >_ (prawy dół) */
.theme-toggle{ left:18px; right:auto; }

/* FIX nagłówek lekcji (jasny): pełny ciemny tekst, zero gradientu-clip (zamalowywał) */
html[data-theme="light"] .lesson-title{
  background:none!important; background-image:none!important;
  -webkit-background-clip:border-box!important; background-clip:border-box!important;
  -webkit-text-fill-color:#0B1220!important; color:#0B1220!important;
}

/* FIX demo „AI ▸" w trybie jasnym: pudełka są ciemne (terminal) → tekst musi być jasny */
html[data-theme="light"] .ai-demo-text{ color:var(--sa-txt,#e8eef6) !important; }
html[data-theme="light"] .ai-demo-resp,
html[data-theme="light"] .ai-demo-resp p,
html[data-theme="light"] .ai-demo-resp li{ color:var(--sa-txt,#e8eef6) !important; }
html[data-theme="light"] .ai-demo-promptbox .ai-demo-text{ color:var(--sa-acc-tint,#a7f3d6) !important; }
html[data-theme="light"] .ai-demo-head{ color:var(--sa-muted,#94a3b8) !important; }
html[data-theme="light"] .ai-demo-head.ai-demo-ai{ color:var(--sa-acc,#34e2a0) !important; }


/* ============================================================================
   TOP-STRIP MODUŁÓW (2026-07-07) — moduły przeniesione z lewej belki na
   POZIOMĄ belkę u góry (desktop): kompaktowe pigułki z NUMEREM (tooltip=tytuł),
   dzięki czemu cała szerokość i wysokość idzie na treść/okna czatów.
   Mobile (<1100px): hamburger → drawer na PEŁNĄ szerokość (numer+tytuł),
   klik modułu chowa menu (closeDrawer w kurs.js).
   ========================================================================== */

/* numer pigułki — domyślnie (drawer/mobile) ukryty, karta pokazuje num+tytuł */
.module-link .m-n { display: none; }

@media (min-width: 1100px) {
  /* szkielet: kolumna (nadpisuje wcześniejszy desktopowy grid „sidebar | treść") */
  .kurs-shell { display: flex; flex-direction: column; grid-template-columns: none; }

  /* sidebar → pozioma, przyklejona belka pod topbarem */
  .kurs-sidebar {
    position: sticky;
    top: var(--topbar-h);
    width: 100%;
    flex: 0 0 auto;
    height: auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1.25rem;
    overflow-x: auto;
    overflow-y: hidden;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(15, 20, 29, 0.72);
    backdrop-filter: blur(10px);
    scrollbar-width: thin;
    z-index: 30;
  }
  .kurs-sidebar::-webkit-scrollbar { height: 7px; width: auto; }

  /* pierścień postępu — kompaktowo po lewej */
  .sidebar-head { padding: 0; margin: 0; border: 0; flex: 0 0 auto; gap: 0.55rem; }
  .sidebar-head .ring { width: 38px; height: 38px; }
  .ring-label .mono { font-size: 0.85rem; }
  .ring-label .dim { display: none; }

  /* lista modułów — poziomo, pigułki z numerami */
  .module-list { flex-direction: row; gap: 0.3rem; flex-wrap: nowrap; align-items: center; }
  .module-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.28rem;
    padding: 0.34rem 0.62rem;
    border-radius: 999px;
    white-space: nowrap;
    flex: 0 0 auto;
  }
  .module-link:hover { transform: translateY(1px); }
  .module-link .m-n {
    display: inline;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-soft);
    letter-spacing: 0;
  }
  .module-link.active .m-n { color: var(--accent); }
  .module-link .m-num { display: none; }
  .module-link .m-title { display: none; }
  .module-link .m-badge { font-size: 0.7rem; line-height: 1; }

  /* treść na pełną szerokość pod belką */
  .kurs-main { width: 100%; }
}

/* mobile/tablet: drawer na PEŁNĄ szerokość ekranu */
@media (max-width: 1099px) {
  .kurs-sidebar {
    width: 100vw;
    max-width: 100vw;
    flex-basis: 100vw;
  }
}

/* top-strip: kompaktowy panel XP w jednej linii (Lv + pasek), bez rozpychania belki */
@media (min-width: 1100px) {
  .kurs-sidebar .xp-panel {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 0.45rem;
    margin: 0 0.25rem 0 0;
    padding: 0;
  }
  .kurs-sidebar .xp-panel .xp-row { display: flex; align-items: center; gap: 0.4rem; margin: 0; }
  .kurs-sidebar .xp-panel .xp-mods { display: none; }         /* dubluje pierścień X/24 */
  .kurs-sidebar .xp-panel .xp-bar { width: 64px; margin: 0; }
  .kurs-sidebar .xp-panel .xp-next { display: none; }         /* szczegół XP → tooltip niżej */
}