/* scratch.creathink.one — kurs Scratcha */

:root {
  --paper:      #f6f7fb;
  --card:       #ffffff;
  --ink:        #141a2e;
  --ink-soft:   #545c78;
  --ink-faint:  #8b93ac;
  --line:       #e3e6f0;
  --line-soft:  #eef0f7;

  --brand:      #4c6fff;
  --brand-dark: #3452d6;
  --accent:     #ff8c1a;
  --ok:         #2fa84f;
  --warn:       #e8a020;
  --bad:        #e0483a;

  --motion:   #4c97ff;
  --looks:    #9966ff;
  --sound:    #cf63cf;
  --events:   #ffbf00;
  --control:  #ffab19;
  --sensing:  #5cb1d6;
  --operators:#59c059;
  --vars:     #ff8c1a;
  --lists:    #ff661a;
  --myblocks: #ff6680;
  --pen:      #0fbd8c;

  --radius: 16px;
  --shadow: 0 1px 2px rgba(20,26,46,.06), 0 8px 24px rgba(20,26,46,.06);
  --shadow-lg: 0 2px 4px rgba(20,26,46,.08), 0 18px 48px rgba(20,26,46,.12);
  --max: 1100px;
}

:root[data-theme="dark"] {
  --paper:     #11141f;
  --card:      #191d2c;
  --ink:       #eef1f8;
  --ink-soft:  #a8b0c6;
  --ink-faint: #767f99;
  --line:      #2a3045;
  --line-soft: #222739;
  --brand:     #7f9bff;
  --brand-dark:#5c7cff;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
  --shadow-lg: 0 2px 4px rgba(0,0,0,.4), 0 18px 48px rgba(0,0,0,.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display {
  font-family: 'Fredoka', 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(30px, 5vw, 46px); }
h2 { font-size: clamp(24px, 3.5vw, 32px); }
h3 { font-size: 21px; }

p { margin: 0 0 1em; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
strong { font-weight: 650; }
code, kbd {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: .9em;
}
kbd {
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 1px 7px;
  color: var(--ink);
  white-space: nowrap;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 780px; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: var(--max); margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 14px;
}
.logo {
  display: flex; align-items: center; gap: 9px;
  font-family: 'Fredoka', sans-serif; font-weight: 600; font-size: 18px;
  color: var(--ink); text-decoration: none;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: grid; place-items: center; color: #fff; font-size: 16px;
}
.topbar .spacer { flex: 1; }
.topbar nav { display: flex; gap: 4px; align-items: center; }
.tb-link {
  padding: 7px 12px; border-radius: 9px; font-size: 15px;
  color: var(--ink-soft); font-weight: 500;
}
.tb-link:hover { background: var(--line-soft); color: var(--ink); text-decoration: none; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink-soft); cursor: pointer;
  display: grid; place-items: center; font-size: 16px;
}
.icon-btn:hover { color: var(--ink); border-color: var(--brand); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 30px; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--brand); margin-bottom: 14px;
}
.hero .lead { font-size: 19px; color: var(--ink-soft); max-width: 62ch; }

/* ---------- cards ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.lesson-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  color: var(--ink); text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.lesson-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-lg);
  border-color: var(--brand); text-decoration: none;
}
.lesson-card .thumb { background: var(--line-soft); border-bottom: 1px solid var(--line); }
.lesson-card .thumb svg { display: block; width: 100%; height: auto; }
.lesson-card .body { padding: 16px 18px 18px; display: flex; flex-direction: column; flex: 1; }
.lesson-card .num {
  font-family: 'Fredoka', sans-serif; font-size: 13px; font-weight: 600;
  color: var(--brand); letter-spacing: .06em; text-transform: uppercase;
}
.lesson-card h3 { margin: 4px 0 6px; font-size: 20px; }
.lesson-card p { font-size: 15px; color: var(--ink-soft); margin: 0 0 12px; flex: 1; }
.lesson-card .foot {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 13px; color: var(--ink-faint);
}

.bar { height: 6px; background: var(--line-soft); border-radius: 99px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--accent)); border-radius: 99px; transition: width .3s ease; }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 99px;
  background: var(--line-soft); color: var(--ink-soft); border: 1px solid var(--line);
}
.pill.ok { background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, transparent); }
.pill.brand { background: color-mix(in srgb, var(--brand) 12%, transparent); color: var(--brand); border-color: color-mix(in srgb, var(--brand) 30%, transparent); }

.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; padding: 0; list-style: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 12px; border: 1px solid transparent;
  font-family: 'Fredoka', sans-serif; font-size: 16px; font-weight: 500;
  cursor: pointer; text-decoration: none; transition: .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-lg { padding: 14px 26px; font-size: 18px; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .45; pointer-events: none; }

/* ---------- lesson page ---------- */
.lesson-head { padding: 40px 0 8px; }
.crumbs { font-size: 14px; color: var(--ink-faint); margin-bottom: 14px; }
.crumbs a { color: var(--ink-soft); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 22px; }

.preview {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 24px; align-items: center;
  padding: 22px; margin: 6px 0 34px;
}
.preview .stage-svg { width: 100%; height: auto; border-radius: 12px; display: block; }
.preview h3 { margin-top: 0; }
@media (max-width: 760px) { .preview { grid-template-columns: 1fr; } }

.step {
  border: 1px solid var(--line); background: var(--card);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 24px 26px; margin: 0 0 20px;
  scroll-margin-top: 80px;
}
.step-head { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 4px; }
.step-num {
  flex: none; width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: #fff;
  display: grid; place-items: center; font-family: 'Fredoka', sans-serif; font-size: 19px;
}
.step-head h3 { margin: 6px 0 0; flex: 1; }
.step-time { font-size: 13px; color: var(--ink-faint); white-space: nowrap; margin-top: 11px; }
.step.done { border-color: color-mix(in srgb, var(--ok) 45%, transparent); }
.step.done .step-num { background: var(--ok); }

.do {
  margin: 14px 0; padding: 0; list-style: none; counter-reset: d;
}
.do li {
  position: relative; padding-left: 30px; margin-bottom: 9px; counter-increment: d;
}
.do li::before {
  content: counter(d); position: absolute; left: 0; top: 2px;
  width: 21px; height: 21px; border-radius: 7px; background: var(--line-soft);
  color: var(--ink-soft); font-size: 12px; font-weight: 700;
  display: grid; place-items: center;
}

.note {
  border-left: 4px solid var(--brand); background: color-mix(in srgb, var(--brand) 6%, var(--card));
  border-radius: 0 12px 12px 0; padding: 14px 18px; margin: 16px 0; font-size: 15.5px;
}
.note .t { font-weight: 700; display: block; margin-bottom: 2px; font-size: 14px; }
.note.why { border-color: var(--looks); background: color-mix(in srgb, var(--looks) 7%, var(--card)); }
.note.tip { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 7%, var(--card)); }
.note.warn { border-color: var(--warn); background: color-mix(in srgb, var(--warn) 9%, var(--card)); }
.note.parent { border-color: var(--myblocks); background: color-mix(in srgb, var(--myblocks) 7%, var(--card)); }
.note p:last-child { margin-bottom: 0; }

.check {
  display: flex; gap: 12px; align-items: flex-start;
  background: color-mix(in srgb, var(--ok) 8%, var(--card));
  border: 1px dashed color-mix(in srgb, var(--ok) 45%, transparent);
  border-radius: 12px; padding: 14px 16px; margin: 18px 0 6px;
}
.check input[type=checkbox] { width: 22px; height: 22px; margin-top: 2px; accent-color: var(--ok); flex: none; cursor: pointer; }
.check label { cursor: pointer; font-size: 15.5px; }
.check .t { display: block; font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--ok); }

table.tbl { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
table.tbl th, table.tbl td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.tbl th { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-faint); font-weight: 700; }
table.tbl tr:last-child td { border-bottom: 0; }

/* ---------- scratch blocks ---------- */
.script {
  background: color-mix(in srgb, var(--ink) 4%, var(--card));
  border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 18px; margin: 16px 0; overflow-x: auto;
}
.script > .script-t {
  font-size: 12.5px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 12px;
}
.stack { display: block; min-width: max-content; }

.blk {
  position: relative; display: block;
  font-family: 'Inter', sans-serif; font-size: 14.5px; font-weight: 600;
  color: #fff; line-height: 1.45;
}
.blk.s {
  background: var(--c); padding: 7px 14px; border-radius: 6px; margin-bottom: 3px;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,.12);
}
.blk.s::after {
  content: ''; position: absolute; left: 13px; bottom: -3px;
  width: 19px; height: 4px; background: var(--c); border-radius: 0 0 4px 4px;
}
.blk.hat { border-radius: 18px 18px 6px 6px; padding-top: 12px; }
.blk.c { background: var(--c); border-radius: 6px; margin-bottom: 3px; box-shadow: inset 0 -1px 0 rgba(0,0,0,.12); }
.blk.c > .lbl { padding: 7px 14px; display: block; }
.blk.c > .slot {
  margin-left: 15px; padding: 4px 0 4px 6px;
  background: color-mix(in srgb, var(--ink) 4%, var(--card));
  border-radius: 6px 0 0 6px; min-height: 14px;
}
.blk.c > .foot { height: 13px; }
.blk.c > .foot::after {
  content: ''; position: absolute; left: 13px; bottom: -3px;
  width: 19px; height: 4px; background: var(--c); border-radius: 0 0 4px 4px;
}

.motion    { --c: var(--motion); }
.looks     { --c: var(--looks); }
.sound     { --c: var(--sound); }
.events    { --c: var(--events); }
.control   { --c: var(--control); }
.sensing   { --c: var(--sensing); }
.operators { --c: var(--operators); }
.vars      { --c: var(--vars); }
.lists     { --c: var(--lists); }
.myblocks  { --c: var(--myblocks); }
.pen       { --c: var(--pen); }

.in {
  display: inline-block; background: #fff; color: #2a2f45;
  border-radius: 99px; padding: 0 9px; margin: 0 2px;
  font-weight: 600; font-size: 13.5px; line-height: 1.55;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);
}
.in.txt { border-radius: 7px; }
.in.dd {
  background: rgba(0,0,0,.18); color: #fff; border-radius: 7px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.25);
}
.in.dd::after { content: ' ▾'; opacity: .75; }
.ov {
  display: inline-block; border-radius: 99px; padding: 0 10px; margin: 0 2px;
  font-size: 13.5px; font-weight: 600; color: #fff;
  background: var(--ovc, var(--vars)); box-shadow: inset 0 -1px 0 rgba(0,0,0,.2);
}
.hex {
  display: inline-block; padding: 0 10px; margin: 0 2px;
  font-size: 13.5px; font-weight: 600; color: #fff;
  background: var(--hxc, var(--sensing));
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  padding-left: 14px; padding-right: 14px;
}
.flag { color: #45c26a; font-size: 15px; }
.swatch { display: inline-block; width: 15px; height: 15px; border-radius: 4px; vertical-align: -3px; box-shadow: inset 0 0 0 2px rgba(255,255,255,.85), 0 0 0 1px rgba(0,0,0,.25); margin: 0 2px; }
.cmt {
  display: inline-block; background: #ffeaa0; color: #6b5a12; font-weight: 500;
  border-radius: 6px; padding: 1px 8px; margin: 3px 0; font-size: 13.5px;
  border: 1px solid #e8cf76;
}

.palette { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.pal {
  font-size: 12.5px; font-weight: 700; color: #fff; background: var(--c);
  border-radius: 99px; padding: 2px 11px;
}

/* ---------- misc sections ---------- */
.toc {
  position: sticky; top: 64px; align-self: start;
  font-size: 14.5px;
}
.toc ol { list-style: none; padding: 0; margin: 0; counter-reset: t; }
.toc li { counter-increment: t; }
.toc a {
  display: block; padding: 6px 10px 6px 30px; border-radius: 8px;
  color: var(--ink-soft); position: relative;
}
.toc a::before {
  content: counter(t); position: absolute; left: 8px; top: 8px;
  width: 16px; height: 16px; border-radius: 5px; background: var(--line-soft);
  font-size: 11px; font-weight: 700; display: grid; place-items: center; color: var(--ink-faint);
}
.toc a:hover { background: var(--line-soft); color: var(--ink); text-decoration: none; }
.toc a.done::before { background: var(--ok); color: #fff; content: '✓'; }

.layout { display: grid; grid-template-columns: 210px 1fr; gap: 36px; align-items: start; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } .toc { display: none; } }

.nav-next {
  display: flex; gap: 14px; justify-content: space-between; align-items: stretch;
  margin: 34px 0 60px; flex-wrap: wrap;
}
.nav-next a {
  flex: 1; min-width: 240px; padding: 18px 20px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  box-shadow: var(--shadow);
}
.nav-next a:hover { border-color: var(--brand); text-decoration: none; }
.nav-next .k { font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); font-weight: 700; }
.nav-next .v { font-family: 'Fredoka', sans-serif; font-size: 18px; }

footer.site {
  border-top: 1px solid var(--line); padding: 30px 0 50px;
  font-size: 14px; color: var(--ink-faint);
}
footer.site a { color: var(--ink-soft); }

.sec-t {
  display: flex; align-items: center; gap: 12px; margin: 42px 0 18px;
}
.sec-t h2 { margin: 0; }
.sec-t .ln { flex: 1; height: 1px; background: var(--line); }

ul.plain { list-style: none; padding: 0; margin: 12px 0; }
ul.plain li { padding-left: 26px; position: relative; margin-bottom: 8px; }
ul.plain li::before { content: '→'; position: absolute; left: 0; color: var(--brand); font-weight: 700; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; font-size: 15px; margin: 12px 0; }
.kv dt { color: var(--ink-faint); font-weight: 600; }
.kv dd { margin: 0; }

.progress-box {
  display: flex; align-items: center; gap: 16px; padding: 18px 22px;
  border-radius: var(--radius); background: var(--card); border: 1px solid var(--line);
  box-shadow: var(--shadow); margin: 26px 0 0;
}
.progress-box .bar { flex: 1; }
.progress-box .n { font-family: 'Fredoka', sans-serif; font-size: 20px; white-space: nowrap; }

@media print {
  .topbar, .toc, .nav-next, .icon-btn, .btn { display: none !important; }
  body { background: #fff; font-size: 12pt; }
  .step, .card { break-inside: avoid; box-shadow: none; }
}


/* ---------- małe ekrany ---------- */
@media (max-width: 680px) {
  body { font-size: 16px; overflow-x: hidden; }
  h1 { font-size: clamp(25px, 7.4vw, 46px); }
  h1, h2, h3, p, li { overflow-wrap: break-word; }
  .topbar-in { gap: 8px; padding: 8px 14px; }
  .logo-txt { display: none; }
  .topbar nav { flex: 1; justify-content: flex-end; flex-wrap: nowrap; }
  .tb-link { padding: 6px 8px; font-size: 14px; white-space: nowrap; }
  .wrap { padding: 0 16px; }
  .hero { padding: 32px 0 18px; }
  .hero .lead { font-size: 17px; }
  .step { padding: 18px 16px; }
  .preview { padding: 16px; gap: 16px; }
  .script { padding: 12px; border-radius: 10px; }
  .progress-box { flex-wrap: wrap; padding: 16px; }
  .progress-box .bar { flex-basis: 100%; order: 3; }
  .nav-next a { min-width: 100%; }
  table.tbl { font-size: 14px; }
  table.tbl th, table.tbl td { padding: 8px 6px; }
  .blk { font-size: 13.5px; }
}
@media (max-width: 420px) {
  .tb-link { padding: 6px 6px; font-size: 13px; }
}


/* ---------- moduły na stronie głównej ---------- */
.modul { margin-bottom: 46px; }
.modul-head {
  display: flex; gap: 24px; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap; margin: 0 0 20px; padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.modul-head h2 { margin: 0 0 6px; }
.modul-head p { margin: 0; color: var(--ink-soft); font-size: 15.5px; max-width: 62ch; }
.modul-stat { text-align: right; min-width: 170px; }
.modul-stat .n { font-family: 'Fredoka', sans-serif; font-size: 26px; line-height: 1; }
.modul-stat .bar { margin: 8px 0 6px; }
.modul-stat .s { font-size: 13px; color: var(--ink-faint); }
@media (max-width: 680px) {
  .modul-stat { text-align: left; min-width: 100%; }
  .modul-head { gap: 14px; }
}