/* ============================================================
   LANGCHAIN AKADÉMIA — Dark "pentelka" (ručne-ceruzkový) štýl
   Tmavý skicár: rukopisné fonty, načrtnuté okraje, jemné natočenia.
   ============================================================ */
:root {
  /* Tmavé "papierové" pozadie + grafitová/kriedová stopa */
  --bg: #211f1b;
  --bg-2: #26241f;
  --panel: #2a2823;
  --panel-2: #312e28;
  --ink: #e8e3d6;            /* hlavná stopa ceruzky/kriedy */
  --ink-2: rgba(232, 227, 214, 0.62);
  --ink-3: rgba(232, 227, 214, 0.4);
  --line: rgba(232, 227, 214, 0.3);   /* nakreslená čiara */
  --line-soft: rgba(232, 227, 214, 0.16);

  /* Farebné "pastelky" */
  --accent: #8fb8d6;          /* modrá ceruzka */
  --accent-deep: #6e9cc0;
  --blue-text: #93bdd9; --blue-bg: rgba(143,184,214,0.12);
  --green-text: #9ec79a; --green-bg: rgba(140,190,135,0.13);
  --red-text: #e0a09a;   --red-bg: rgba(216,128,120,0.14);
  --yellow-text: #e4c46a; --yellow-bg: rgba(228,196,106,0.13);
  --purple-text: #c2a3da; --purple-bg: rgba(180,150,210,0.14);

  --code-text: #e6b3a8;
  --code-bg: rgba(232,227,214,0.1);

  --font: 'Kalam', 'Comic Sans MS', cursive;
  --font-hand: 'Caveat', 'Kalam', cursive;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --topbar-h: 52px;
  --sidebar-w: 264px;

  /* Načrtnuté (kostrbaté) rohy */
  --sketch: 255px 12px 225px 15px / 15px 225px 18px 255px;
  --sketch-2: 14px 225px 15px 255px / 255px 14px 225px 16px;
  --sketch-sm: 22px 6px 18px 8px / 8px 16px 6px 20px;

  --shadow: 3px 4px 0 rgba(0,0,0,0.28);

  /* PyCharm Darcula (realistická obrazovka) */
  --pc-chrome: #3c3f41; --pc-chrome-2: #313335; --pc-editor: #2b2b2b;
  --pc-line-num: #606366; --pc-text: #a9b7c6; --pc-console: #2b2b2b;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background-color: var(--bg);
  background-image: radial-gradient(rgba(232,227,214,0.05) 1.1px, transparent 1.1px);
  background-size: 24px 24px;
  color: var(--ink);
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 18px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(143,184,214,0.3); }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(232,227,214,0.18); border-radius: 99px; border: 3px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: rgba(232,227,214,0.32); }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; height: var(--topbar-h); z-index: 60;
  display: flex; align-items: center; gap: 14px; padding: 0 18px;
  background: rgba(33,31,27,.9); backdrop-filter: blur(8px);
  border-bottom: 2px dashed var(--line-soft);
}
.hamburger { display: none; flex-direction: column; gap: 4px; background: none; border: 0; cursor: pointer; padding: 8px; }
.hamburger span { width: 19px; height: 2px; background: var(--ink-2); border-radius: 2px; transition: .25s; }

.brand { display: flex; align-items: center; gap: 7px; text-decoration: none; color: var(--ink); font-size: 22px; font-family: var(--font-hand); }
.brand-emoji { font-size: 20px; }
.brand-link { font-size: 15px; opacity: .8; }
.brand-text { font-weight: 600; }
.brand-text b { font-weight: 700; color: var(--accent); }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 9px; }

.ring-mini { position: relative; width: 32px; height: 32px; }
.ring-mini svg { width: 32px; height: 32px; transform: rotate(-90deg); }
.ring-mini .ring-bg { fill: none; stroke: rgba(232,227,214,0.14); stroke-width: 4; }
.ring-mini .ring-fg { fill: none; stroke: var(--accent); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 113; stroke-dashoffset: 113; transition: stroke-dashoffset 1s cubic-bezier(.22,1,.36,1); }
.ring-mini span { position: absolute; inset: 0; display: grid; place-items: center; font-size: 9px; font-weight: 700; color: var(--ink-2); }

.xp-pill {
  display: flex; align-items: center; gap: 5px; padding: 4px 12px;
  background: var(--panel); border: 1.5px solid var(--line); border-radius: var(--sketch-sm);
  font-weight: 700; font-size: 15px; color: var(--ink); transition: transform .2s;
}
.xp-pill.bump { animation: xpBump .5s cubic-bezier(.22,1.5,.36,1); }
@keyframes xpBump { 0% { transform: scale(1) rotate(0); } 40% { transform: scale(1.12) rotate(-3deg); } 100% { transform: scale(1) rotate(0); } }
.xp-bolt { font-size: 13px; }
.xp-suffix { color: var(--ink-3); font-size: 12px; font-weight: 700; }

.level-chip {
  padding: 4px 12px; font-size: 15px; font-weight: 600;
  background: var(--panel); border: 1.5px solid var(--line); border-radius: var(--sketch-sm); color: var(--ink-2);
  display: flex; align-items: center; gap: 6px; white-space: nowrap;
}
.level-chip .lvl-num { color: var(--accent); font-weight: 700; }

.xp-float {
  position: fixed; z-index: 200; font-weight: 700; font-size: 20px; pointer-events: none; color: var(--accent);
  font-family: var(--font-hand); animation: xpFloatUp 1.4s ease-out forwards;
}
@keyframes xpFloatUp { 0% { opacity: 0; transform: translateY(8px) scale(.8) rotate(-6deg); } 20% { opacity: 1; transform: translateY(0) scale(1.05); } 100% { opacity: 0; transform: translateY(-44px) scale(1) rotate(4deg); } }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed; top: var(--topbar-h); left: 0; bottom: 0; width: var(--sidebar-w); z-index: 50;
  background: var(--bg-2); border-right: 2px dashed var(--line-soft);
  transition: transform .3s cubic-bezier(.22,1,.36,1);
}
.sidebar-inner { height: 100%; overflow-y: auto; padding: 12px 10px 40px; }
.sidebar-backdrop { display: none; position: fixed; inset: 0; z-index: 45; background: rgba(0,0,0,.5); opacity: 0; transition: opacity .25s; }

.side-search { padding: 4px 4px 10px; }
.side-search input {
  width: 100%; padding: 8px 12px; border-radius: var(--sketch-sm);
  background: var(--panel); border: 1.5px solid var(--line); color: var(--ink);
  font-family: var(--font); font-size: 15px; outline: none; transition: border .2s;
}
.side-search input:focus { border-color: var(--accent); }
.side-search input::placeholder { color: var(--ink-3); }

.side-home {
  display: flex; align-items: center; gap: 9px; margin: 2px; padding: 6px 11px;
  border-radius: var(--sketch-sm); color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: 16px;
  transition: background .12s, color .12s;
}
.side-home:hover, .side-home.active { background: var(--panel); color: var(--ink); }

.side-section { margin-top: 8px; }
.side-section-head {
  display: flex; align-items: center; gap: 7px; padding: 5px 11px; margin: 0 2px; cursor: pointer; user-select: none;
  border-radius: var(--sketch-sm); transition: background .12s;
}
.side-section-head:hover { background: var(--panel); }
.side-section-icon { font-size: 16px; }
.side-section-title { font-size: 14px; font-weight: 700; color: var(--ink-3); flex: 1; line-height: 1.25; }
.side-section-prog { font-size: 12px; font-weight: 700; color: var(--ink-3); }
.side-section-prog.full { color: var(--green-text); }
.side-caret { font-size: 10px; color: var(--ink-3); transition: transform .25s; }
.side-section.collapsed .side-caret { transform: rotate(-90deg); }
.side-lessons { overflow: hidden; max-height: 1400px; transition: max-height .35s cubic-bezier(.22,1,.36,1); }
.side-section.collapsed .side-lessons { max-height: 0; }

.side-lesson {
  position: relative; display: flex; align-items: center; gap: 9px;
  padding: 5px 11px 5px 22px; margin: 1px 2px; border-radius: var(--sketch-sm);
  color: var(--ink-2); text-decoration: none; font-size: 15px; line-height: 1.3;
  transition: background .12s, color .12s;
}
.side-lesson:hover { background: var(--panel); color: var(--ink); }
.side-lesson.active { background: var(--panel-2); color: var(--ink); font-weight: 700; }
.side-check {
  width: 20px; height: 20px; min-width: 20px; border-radius: 50%; display: grid; place-items: center;
  font-size: 11px; font-weight: 700; border: 1.5px solid var(--line); color: var(--ink-3);
  transition: .25s;
}
.side-lesson.done .side-check { background: var(--green-text); border-color: transparent; color: #1c1b17; animation: checkPop .4s cubic-bezier(.22,1.5,.36,1); }
@keyframes checkPop { 0% { transform: scale(.5) rotate(-12deg); } 70% { transform: scale(1.15); } 100% { transform: scale(1) rotate(0); } }
.side-lesson-title { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.side-lesson-dur { margin-left: auto; font-size: 12px; color: var(--ink-3); }
.side-special { margin-top: 12px; border-top: 2px dashed var(--line-soft); padding-top: 10px; }
.side-btn { width: 100%; background: none; border: 0; font: inherit; cursor: pointer; text-align: left; }

/* ============================================================
   LAYOUT / VIEW
   ============================================================ */
.main { margin-left: var(--sidebar-w); padding: calc(var(--topbar-h) + 30px) 60px 120px; min-height: 100vh; }
.view { max-width: 880px; margin: 0 auto; }
.view.enter { animation: viewIn .4s cubic-bezier(.22,1,.36,1) both; }
@keyframes viewIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.reveal { opacity: 0; transform: translateY(14px) rotate(-.4deg); transition: opacity .5s cubic-bezier(.22,1,.36,1), transform .5s cubic-bezier(.22,1,.36,1); }
.reveal.visible { opacity: 1; transform: translateY(0) rotate(0); }

/* ============================================================
   TLAČIDLÁ
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 8px 18px; border: 2px solid var(--line); border-radius: var(--sketch-sm);
  background: var(--panel); color: var(--ink); font-family: var(--font);
  font-size: 16px; font-weight: 700; cursor: pointer; text-decoration: none;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s; line-height: 1.2;
}
.btn:hover { background: var(--panel-2); border-color: var(--ink-2); transform: translate(-1px,-1px) rotate(-.6deg); box-shadow: var(--shadow); }
.btn:active { transform: translate(1px,1px); box-shadow: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #1b1a16; }
.btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn-ghost:hover { color: var(--ink); background: var(--panel); border-color: var(--line); }
.btn-success { background: var(--green-text); border-color: var(--green-text); color: #18241a; }
.btn-sm { padding: 6px 13px; font-size: 14px; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }

/* ============================================================
   DASHBOARD — HERO
   ============================================================ */
.hero { padding: 14px 0 26px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px; border-radius: var(--sketch-sm);
  background: var(--panel); border: 1.5px solid var(--line); font-size: 15px; font-weight: 600; color: var(--ink-2);
  margin-bottom: 18px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green-text); }

.hero h1 {
  font-family: var(--font-hand); font-size: clamp(40px, 6.5vw, 66px); font-weight: 700; line-height: 1.05; color: var(--ink);
}
.hero h1 .grad-text { color: var(--accent); }

.hero-type { margin-top: 14px; font-size: clamp(17px, 2.2vw, 22px); color: var(--ink-2); min-height: 30px; font-weight: 400; }
.hero-type .typed { color: var(--accent); font-weight: 700; }
.hero-type .caret { display: inline-block; width: 2px; height: 1em; background: var(--accent); margin-left: 2px; vertical-align: text-bottom; animation: caretBlink .9s steps(1) infinite; }
@keyframes caretBlink { 50% { opacity: 0; } }

.hero-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }

.hero-stats { margin-top: 38px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat-card {
  padding: 18px 16px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line);
  transition: transform .2s, box-shadow .2s;
}
.stat-card:nth-child(even) { border-radius: var(--sketch-2); transform: rotate(.5deg); }
.stat-card:nth-child(odd) { transform: rotate(-.5deg); }
.stat-card:hover { transform: rotate(0) translateY(-3px); box-shadow: var(--shadow); }
.stat-num { font-family: var(--font-hand); font-size: 38px; font-weight: 700; color: var(--accent); line-height: 1; }
.stat-label { margin-top: 6px; font-size: 14px; color: var(--ink-2); }

.level-progress { margin: 32px 0 0; padding: 18px 22px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); }
.level-progress-head { display: flex; justify-content: space-between; font-size: 15px; font-weight: 600; color: var(--ink-2); margin-bottom: 10px; flex-wrap: wrap; gap: 6px; }
.level-bar { height: 10px; border-radius: 99px; background: rgba(232,227,214,0.1); overflow: hidden; border: 1px solid var(--line-soft); }
.level-bar-fill { height: 100%; border-radius: 99px; background: var(--accent); width: 0; transition: width 1s cubic-bezier(.22,1,.36,1); }

/* ============================================================
   DASHBOARD — SEKCIE / KARTY
   ============================================================ */
.dash-section-title { display: flex; align-items: center; gap: 12px; margin: 46px 0 18px; font-family: var(--font-hand); font-size: 30px; font-weight: 700; color: var(--ink); }
.dash-section-title .line { flex: 1; height: 2px; background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 14px); }

.section-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.section-card {
  position: relative; padding: 20px; border-radius: var(--sketch); overflow: hidden;
  background: var(--panel); border: 2px solid var(--line);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.section-card:nth-child(even) { border-radius: var(--sketch-2); }
.section-card:hover { transform: translateY(-3px) rotate(-.4deg); box-shadow: var(--shadow); border-color: var(--ink-2); }
.section-card-head { display: flex; align-items: flex-start; gap: 12px; }
.section-card-icon { font-size: 30px; line-height: 1; }
.section-card h3 { font-family: var(--font-hand); font-size: 23px; font-weight: 700; line-height: 1.1; }
.section-card .section-sub { margin-top: 6px; font-size: 14.5px; color: var(--ink-2); line-height: 1.5; }
.section-card-ring { margin-left: auto; position: relative; width: 52px; height: 52px; min-width: 52px; }
.section-card-ring svg { width: 52px; height: 52px; transform: rotate(-90deg); }
.section-card-ring .rbg { fill: none; stroke: rgba(232,227,214,0.12); stroke-width: 4; }
.section-card-ring .rfg { fill: none; stroke: var(--ring-color, var(--accent)); stroke-width: 4; stroke-linecap: round; stroke-dasharray: 151; stroke-dashoffset: 151; transition: stroke-dashoffset 1.1s cubic-bezier(.22,1,.36,1) .2s; }
.section-card-ring span { position: absolute; inset: 0; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: var(--ink-2); }
.section-card-lessons { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; }
.lesson-chip {
  display: inline-flex; align-items: center; gap: 5px; padding: 4px 11px; border-radius: var(--sketch-sm);
  font-size: 13px; font-weight: 600; color: var(--ink-2); text-decoration: none;
  background: var(--panel-2); border: 1.5px solid var(--line); transition: .15s;
}
.lesson-chip:hover { color: var(--ink); border-color: var(--ink-2); transform: rotate(-1deg); }
.lesson-chip.done { color: var(--green-text); border-color: rgba(158,199,154,.4); background: var(--green-bg); }

.special-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.special-card {
  position: relative; display: block; padding: 22px; border-radius: var(--sketch); text-decoration: none; color: var(--ink);
  background: var(--panel); border: 2px solid var(--line);
  transition: transform .2s, box-shadow .2s;
}
.special-card:nth-child(even) { border-radius: var(--sketch-2); transform: rotate(.5deg); }
.special-card:nth-child(odd) { transform: rotate(-.5deg); }
.special-card:hover { transform: rotate(0) translateY(-3px); box-shadow: var(--shadow); }
.special-card .sc-icon { font-size: 30px; }
.special-card h3 { font-family: var(--font-hand); margin-top: 8px; font-size: 22px; font-weight: 700; }
.special-card p { margin-top: 5px; font-size: 14px; color: var(--ink-2); line-height: 1.5; }
.special-card .sc-meta { margin-top: 12px; font-size: 13.5px; font-weight: 700; color: var(--accent); }

/* ============================================================
   LEKCIA
   ============================================================ */
.lesson-top { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-3); font-weight: 600; flex-wrap: wrap; }
.lesson-top a:hover { text-decoration: underline; }
.lesson-top .crumb-sep { opacity: .6; }
.lesson-meta-chip { padding: 3px 11px; border-radius: var(--sketch-sm); background: var(--panel); border: 1.5px solid var(--line); font-size: 13px; font-weight: 600; color: var(--ink-2); }

.lesson-header { margin-top: 18px; }
.lesson-header-icon { font-size: 58px; line-height: 1; margin-bottom: 6px; }
.lesson-header h1 { font-family: var(--font-hand); font-size: clamp(34px, 5vw, 52px); font-weight: 700; line-height: 1.08; color: var(--ink); }
.lesson-intro { margin-top: 12px; font-size: 18px; color: var(--ink-2); line-height: 1.6; max-width: 720px; }

.goals-card { margin-top: 24px; padding: 18px 20px; border-radius: var(--sketch); background: var(--blue-bg); border: 2px solid var(--line); }
.goals-card h3 { font-size: 14px; font-weight: 700; letter-spacing: .3px; color: var(--blue-text); display: flex; gap: 7px; align-items: center; }
.goals-card ul { margin-top: 10px; list-style: none; display: grid; gap: 7px; }
.goals-card li { display: flex; gap: 9px; font-size: 16px; line-height: 1.5; color: var(--ink); }
.goals-card li::before { content: '✎'; color: var(--blue-text); font-weight: 700; }

/* Teória — bloky */
.theory { margin-top: 8px; }
.theory h2 {
  font-family: var(--font-hand); margin: 42px 0 14px; font-size: 34px; font-weight: 700; color: var(--ink);
  padding-bottom: 6px; line-height: 1.1;
  border-bottom: 2px solid; border-image: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 16px) 2;
}
.theory p { margin: 13px 0; font-size: 18px; line-height: 1.75; color: var(--ink); }
.theory p strong, .theory li strong { font-weight: 700; color: #fff; }
.theory p code, .theory li code, .box-body code, td code, .quiz-q code, .ex-intro code, .goals-card code {
  font-family: var(--mono); font-size: .78em; padding: 1px 6px; border-radius: 4px;
  background: var(--code-bg); color: var(--code-text); white-space: nowrap;
}
.theory ul.t-list { margin: 13px 0; list-style: none; display: grid; gap: 7px; padding-left: 2px; }
.theory ul.t-list li { position: relative; padding-left: 26px; font-size: 18px; line-height: 1.6; color: var(--ink); }
.theory ul.t-list li::before { content: '✦'; position: absolute; left: 6px; color: var(--accent); font-weight: 700; }

/* Callout bloky — nalepené lístky */
.box { margin: 18px 0; padding: 16px 18px; border-radius: var(--sketch); display: flex; gap: 11px; background: var(--panel); border: 2px solid var(--line); }
.box:nth-of-type(even) { border-radius: var(--sketch-2); }
.box-ico { font-size: 20px; line-height: 1.5; }
.box-title { font-weight: 700; font-size: 16px; margin-bottom: 2px; }
.box-body { font-size: 16px; line-height: 1.6; color: var(--ink); }
.box-info { background: var(--blue-bg); border-color: rgba(143,184,214,.35); }
.box-info .box-title { color: var(--blue-text); }
.box-warn { background: var(--red-bg); border-color: rgba(216,128,120,.35); }
.box-warn .box-title { color: var(--red-text); }
.box-tip { background: var(--green-bg); border-color: rgba(158,199,154,.35); }
.box-tip .box-title { color: var(--green-text); }
.box-key { background: var(--yellow-bg); border-color: rgba(228,196,106,.35); }
.box-key .box-title { color: var(--yellow-text); }

.t-table { width: 100%; margin: 18px 0; border-collapse: collapse; font-size: 15.5px; }
.t-table th { text-align: left; padding: 9px 13px; background: var(--panel-2); font-weight: 700; font-size: 14px; color: var(--ink-2); border: 1.5px solid var(--line); }
.t-table td { padding: 9px 13px; border: 1.5px solid var(--line-soft); color: var(--ink); line-height: 1.5; vertical-align: top; }
.t-table tbody tr:hover { background: var(--panel); }

/* Flow diagram */
.flow { display: flex; align-items: stretch; gap: 0; margin: 22px 0; flex-wrap: wrap; row-gap: 12px; }
.flow-step { display: flex; align-items: center; }
.flow-chip {
  padding: 11px 15px; border-radius: var(--sketch-sm); background: var(--panel); border: 2px solid var(--line);
  font-size: 14px; font-weight: 700; text-align: center; line-height: 1.3; color: var(--ink);
  transition: transform .2s, box-shadow .2s;
}
.flow-chip:hover { transform: rotate(-1.5deg) translateY(-2px); box-shadow: var(--shadow); border-color: var(--accent); }
.flow-chip small { display: block; font-weight: 400; font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.flow-arrow { padding: 0 9px; color: var(--accent); font-size: 18px; font-weight: 700; }

/* Porovnávacie karty */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 22px 0; }
.compare-card { padding: 18px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); }
.compare-card:nth-child(2) { border-radius: var(--sketch-2); }
.compare-card h4 { font-family: var(--font-hand); font-size: 21px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 7px; }
.compare-card ul { list-style: none; display: grid; gap: 7px; }
.compare-card li { font-size: 15.5px; line-height: 1.5; color: var(--ink); padding-left: 20px; position: relative; }
.compare-card li::before { content: '–'; position: absolute; left: 5px; color: var(--ink-3); font-weight: 700; }
.compare-card.a { border-top: 3px solid var(--accent); }
.compare-card.b { border-top: 3px solid var(--green-text); }

/* ============================================================
   PYCHARM SIMULÁTOR (realistická obrazovka)
   ============================================================ */
.pycharm { margin: 22px 0; border-radius: 8px; overflow: hidden; border: 2px solid var(--line); box-shadow: var(--shadow); background: var(--pc-chrome); font-size: 13px; font-family: var(--mono); }

.pc-titlebar { display: flex; align-items: center; gap: 10px; padding: 9px 14px; background: var(--pc-chrome-2); border-bottom: 1px solid #28292a; }
.pc-dots { display: flex; gap: 7px; }
.pc-dot { width: 12px; height: 12px; border-radius: 50%; }
.pc-dot.r { background: #ff5f57; } .pc-dot.y { background: #febc2e; } .pc-dot.g { background: #28c840; }
.pc-title { flex: 1; text-align: center; color: #9da2a8; font-size: 12px; font-weight: 500; font-family: -apple-system, sans-serif; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pc-title b { color: #c5cad1; font-weight: 600; }

.pc-menubar { display: flex; gap: 2px; align-items: center; padding: 4px 10px; background: var(--pc-chrome); border-bottom: 1px solid #28292a; color: #9da2a8; font-family: -apple-system, sans-serif; font-size: 12px; overflow-x: auto; }
.pc-menubar span { padding: 4px 8px; border-radius: 5px; cursor: default; white-space: nowrap; }
.pc-menubar span:hover { background: #4b6eaf33; color: #d3d7dc; }
.pc-run-zone { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.pc-run-config { display: flex; align-items: center; gap: 6px; padding: 3px 10px; background: #3c3f41; border: 1px solid #5a5d5f; border-radius: 6px; color: #c5cad1; font-size: 12px; white-space: nowrap; }
.pc-run-btn { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 6px; border: none; background: transparent; cursor: pointer; transition: background .2s; position: relative; }
.pc-run-btn:hover { background: #4b6eaf33; }
.pc-run-btn .tri { width: 0; height: 0; border-left: 11px solid #499c54; border-top: 7px solid transparent; border-bottom: 7px solid transparent; transition: filter .2s; }
.pc-run-btn:hover .tri { filter: brightness(1.3) drop-shadow(0 0 6px rgba(73,156,84,.8)); }
.pc-run-btn.pulse-hint::after { content: ''; position: absolute; inset: -3px; border-radius: 9px; border: 2px solid #499c54; animation: runPulse 1.7s ease-out infinite; }
@keyframes runPulse { 0% { opacity: .9; transform: scale(.85); } 100% { opacity: 0; transform: scale(1.45); } }
.pc-stop-btn { width: 11px; height: 11px; background: #c75450; border-radius: 2px; margin: 0 8px; opacity: .35; }

.pc-body { display: flex; min-height: 200px; background: var(--pc-editor); }
.pc-project { width: 200px; min-width: 200px; background: var(--pc-chrome); border-right: 1px solid #28292a; padding: 8px 0; font-family: -apple-system, sans-serif; color: #aeb3b9; user-select: none; }
.pc-project-head { padding: 4px 12px 8px; font-size: 11px; font-weight: 700; color: #8c9196; display: flex; align-items: center; gap: 6px; }
.pc-tree-item { display: flex; align-items: center; gap: 7px; padding: 3.5px 10px; font-size: 12.5px; white-space: nowrap; cursor: default; transition: background .15s; }
.pc-tree-item:hover { background: #0d293e66; }
.pc-tree-item.active-file { background: #4b6eaf4d; color: #fff; }
.pc-tree-item .ti { font-size: 12px; width: 16px; text-align: center; }

.pc-editor-zone { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.pc-tabs { display: flex; background: var(--pc-chrome-2); border-bottom: 1px solid #28292a; overflow-x: auto; }
.pc-tab {
  display: flex; align-items: center; gap: 7px; padding: 8px 16px; font-family: -apple-system, sans-serif; font-size: 12.5px;
  color: #9da2a8; cursor: pointer; border-right: 1px solid #28292a; white-space: nowrap; border-bottom: 2px solid transparent;
  transition: background .2s, color .2s;
}
.pc-tab:hover { background: #3c3f41; }
.pc-tab.active { background: var(--pc-editor); color: #d8dce2; border-bottom-color: #4a88c7; }
.pc-tab .tab-ico { font-size: 11px; }

.pc-editor { display: flex; overflow-x: auto; flex: 1; }
.pc-gutter { padding: 14px 0; background: var(--pc-editor); color: var(--pc-line-num); text-align: right; user-select: none; font-family: var(--mono); font-size: 13px; line-height: 1.62; min-width: 44px; padding-right: 12px; padding-left: 14px; border-right: 1px solid #323232; }
.pc-code { padding: 14px 20px 14px 14px; font-family: var(--mono); font-size: 13px; line-height: 1.62; color: var(--pc-text); white-space: pre; flex: 1; }

/* Darcula syntax */
.pc-code .kw, .blanks-code .kw, .cheat-card pre .kw { color: #cc7832; font-weight: 600; }
.pc-code .str, .blanks-code .str, .cheat-card pre .str { color: #6a8759; }
.pc-code .num, .blanks-code .num, .cheat-card pre .num { color: #6897bb; }
.pc-code .com, .blanks-code .com, .cheat-card pre .com { color: #808080; font-style: italic; }
.pc-code .dec, .blanks-code .dec, .cheat-card pre .dec { color: #bbb529; }
.pc-code .fn, .blanks-code .fn, .cheat-card pre .fn { color: #ffc66d; }
.pc-code .cls { color: #a9b7c6; font-weight: 600; }
.pc-code .self, .blanks-code .self, .cheat-card pre .self { color: #94558d; }
.pc-code .builtin, .blanks-code .builtin, .cheat-card pre .builtin { color: #8888c6; }
.pc-code .fstr, .blanks-code .fstr, .cheat-card pre .fstr { color: #cc7832; }

.pc-copy { margin-left: auto; }
.pc-copy-btn { background: transparent; border: 1px solid #5a5d5f; color: #9da2a8; padding: 2px 10px; font-size: 11px; border-radius: 6px; cursor: pointer; font-family: -apple-system, sans-serif; transition: .2s; white-space: nowrap; }
.pc-copy-btn:hover { color: #fff; border-color: #8c9196; }

.pc-console { border-top: 1px solid #28292a; background: var(--pc-console); display: none; flex-direction: column; }
.pc-console.open { display: flex; animation: consoleSlide .3s cubic-bezier(.22,1,.36,1); }
@keyframes consoleSlide { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.pc-console-head { display: flex; align-items: center; gap: 8px; padding: 6px 14px; background: var(--pc-chrome-2); font-family: -apple-system, sans-serif; font-size: 11.5px; color: #9da2a8; font-weight: 600; }
.pc-console-head .run-ico { color: #499c54; }
.pc-console-body { padding: 12px 16px 16px; font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: #bcbec4; white-space: pre-wrap; word-break: break-word; max-height: 340px; overflow-y: auto; }
.pc-console-body .con-path { color: #5f8b3a; }
.pc-console-body .con-ok { color: #5f8b3a; }
.pc-console-body .con-dim { color: #707682; }
.pc-console-body .con-cursor { display: inline-block; width: 7px; height: 13px; background: #bcbec4; vertical-align: text-bottom; animation: caretBlink .8s steps(1) infinite; }

.pc-statusbar { display: flex; align-items: center; gap: 16px; padding: 4px 14px; background: var(--pc-chrome-2); border-top: 1px solid #28292a; color: #8c9196; font-family: -apple-system, sans-serif; font-size: 11px; }
.pc-statusbar .sb-right { margin-left: auto; display: flex; gap: 14px; }

.pc-note { padding: 10px 16px; background: #2d2f31; border-top: 1px solid #3c3f41; font-size: 12.5px; color: #9da2a8; font-family: -apple-system, sans-serif; line-height: 1.5; }
.pc-note b { color: #c5cad1; }

/* ============================================================
   KVÍZ
   ============================================================ */
.quiz-zone { margin-top: 46px; }
.zone-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.zone-head .zh-icon { font-size: 28px; }
.zone-head h2 { font-family: var(--font-hand); font-size: 30px; font-weight: 700; color: var(--ink); }
.zone-head p { font-size: 15px; color: var(--ink-2); margin-top: 2px; }

.quiz-card { margin: 14px 0; padding: 18px 20px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); transition: border-color .25s; }
.quiz-card:nth-of-type(even) { border-radius: var(--sketch-2); }
.quiz-card.answered-ok { border-color: rgba(158,199,154,.5); background: var(--green-bg); }
.quiz-card.answered-bad { border-color: rgba(216,128,120,.5); }
.quiz-q { font-size: 17px; font-weight: 700; line-height: 1.5; display: flex; gap: 10px; color: var(--ink); }
.quiz-q .q-num { color: var(--accent); font-weight: 700; }
.quiz-opts { margin-top: 14px; display: grid; gap: 8px; }
.quiz-opt {
  display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; padding: 11px 14px;
  border-radius: var(--sketch-sm); background: var(--panel-2); border: 2px solid var(--line);
  color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.45; cursor: pointer; font-weight: 400;
  transition: background .15s, border-color .15s, transform .15s;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--accent); transform: translateX(3px) rotate(-.3deg); }
.quiz-opt .opt-letter { width: 26px; height: 26px; min-width: 26px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 13px; background: var(--panel); border: 1.5px solid var(--line); transition: .2s; }
.quiz-opt:disabled { cursor: default; }
.quiz-opt.correct { border-color: var(--green-text); background: var(--green-bg); }
.quiz-opt.correct .opt-letter { background: var(--green-text); color: #18241a; border-color: transparent; }
.quiz-opt.wrong { border-color: var(--red-text); background: var(--red-bg); animation: shake .4s; }
.quiz-opt.wrong .opt-letter { background: var(--red-text); color: #2a1614; border-color: transparent; }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 50% { transform: translateX(5px); } 75% { transform: translateX(-3px); } }
.quiz-explain { margin-top: 12px; padding: 12px 14px; border-radius: var(--sketch-sm); background: var(--blue-bg); border: 1.5px solid rgba(143,184,214,.3); font-size: 15px; line-height: 1.6; color: var(--ink); display: none; }
.quiz-explain.show { display: block; animation: viewIn .3s both; }
.quiz-explain b { color: var(--blue-text); }

/* ============================================================
   CVIČENIA
   ============================================================ */
.ex-zone { margin-top: 46px; }
.ex-card { margin: 16px 0; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); overflow: hidden; transition: border-color .25s; }
.ex-card:nth-of-type(even) { border-radius: var(--sketch-2); }
.ex-card.solved { border-color: rgba(158,199,154,.55); }
.ex-head { display: flex; align-items: center; gap: 11px; padding: 16px 20px 0; }
.ex-type-badge { font-size: 12px; font-weight: 700; letter-spacing: .2px; padding: 3px 11px; border-radius: var(--sketch-sm); background: var(--purple-bg); color: var(--purple-text); white-space: nowrap; }
.ex-head h3 { font-family: var(--font-hand); font-size: 22px; font-weight: 700; color: var(--ink); }
.ex-solved-flag { margin-left: auto; font-size: 14px; font-weight: 700; color: var(--green-text); display: none; align-items: center; gap: 5px; }
.ex-card.solved .ex-solved-flag { display: flex; }
.ex-intro { padding: 8px 20px 0; font-size: 16px; color: var(--ink-2); line-height: 1.6; }
.ex-body { padding: 14px 20px 18px; }

/* Blanks */
.blanks-code {
  font-family: var(--mono); font-size: 13px; line-height: 2; background: var(--pc-editor);
  border-radius: 8px; padding: 16px 18px; overflow-x: auto; border: 2px solid var(--line);
  white-space: pre; color: var(--pc-text);
}
.blank-input {
  font-family: var(--mono); font-size: 13px; padding: 2px 8px; margin: 0 2px; border-radius: 4px;
  background: #3c3f41; border: 1.5px dashed #6b7280; color: #ffc66d; outline: none; text-align: center;
  transition: border .2s, box-shadow .2s, background .2s; vertical-align: baseline;
}
.blank-input:focus { border-color: #6ab0f3; border-style: solid; box-shadow: 0 0 0 2px rgba(106,176,243,.25); }
.blank-input.ok { border-style: solid; border-color: #6a8759; background: rgba(106,135,89,.25); color: #b5cea3; }
.blank-input.bad { border-style: solid; border-color: #c75450; background: rgba(199,84,80,.25); animation: shake .4s; }

/* Order */
.order-pool, .order-answer { display: flex; flex-wrap: wrap; gap: 8px; min-height: 48px; padding: 12px; border-radius: var(--sketch-sm); }
.order-pool { background: var(--panel-2); border: 2px dashed var(--line); }
.order-answer { margin-top: 10px; background: var(--blue-bg); border: 2px dashed rgba(143,184,214,.4); }
.order-label { font-size: 12.5px; font-weight: 700; letter-spacing: .2px; color: var(--ink-3); margin: 10px 0 5px; }
.order-item {
  padding: 8px 14px; border-radius: var(--sketch-sm); background: var(--panel); border: 2px solid var(--line);
  font-size: 14.5px; font-weight: 600; cursor: pointer; user-select: none;
  transition: transform .2s, border-color .2s; font-family: var(--font); color: var(--ink);
  display: inline-flex; align-items: center; gap: 7px;
}
.order-item:hover { transform: translateY(-2px) rotate(-1.5deg); border-color: var(--accent); }
.order-item .oi-num { font-size: 12px; font-weight: 700; color: var(--accent); }
.order-answer.ok { border-style: solid; border-color: var(--green-text); background: var(--green-bg); }
.order-answer.bad { animation: shake .4s; border-color: var(--red-text); }
.order-empty-hint { font-size: 14px; color: var(--ink-3); align-self: center; font-style: italic; }

/* Write */
.write-editor { background: var(--pc-editor); border-radius: 8px; overflow: hidden; border: 2px solid var(--line); }
.write-editor-head { display: flex; align-items: center; gap: 8px; padding: 8px 14px; background: var(--pc-chrome-2); font-size: 11.5px; color: #9da2a8; font-weight: 600; font-family: -apple-system, sans-serif; }
.write-area {
  width: 100%; min-height: 170px; padding: 14px 16px; background: transparent; border: none; outline: none;
  font-family: var(--mono); font-size: 13px; line-height: 1.65; color: var(--pc-text); resize: vertical; tab-size: 4;
}
.write-feedback { margin-top: 10px; display: none; padding: 12px 14px; border-radius: var(--sketch-sm); font-size: 15px; line-height: 1.6; border: 1.5px solid var(--line); }
.write-feedback.show { display: block; animation: viewIn .3s both; }
.write-feedback.good { background: var(--green-bg); color: var(--ink); border-color: rgba(158,199,154,.4); }
.write-feedback.miss { background: var(--yellow-bg); color: var(--ink); border-color: rgba(228,196,106,.4); }
.write-feedback ul { margin: 6px 0 0 18px; }

.ex-actions { display: flex; gap: 9px; margin-top: 14px; flex-wrap: wrap; align-items: center; }
.hint-box, .solution-box { display: none; margin-top: 12px; padding: 12px 14px; border-radius: var(--sketch-sm); font-size: 15px; line-height: 1.6; border: 1.5px solid var(--line); }
.hint-box.show, .solution-box.show { display: block; animation: viewIn .3s both; }
.hint-box { background: var(--yellow-bg); color: var(--ink); border-color: rgba(228,196,106,.4); }
.solution-box { background: var(--panel-2); }
.solution-box pre { font-family: var(--mono); font-size: 12.5px; line-height: 1.65; white-space: pre-wrap; color: var(--pc-text); margin-top: 6px; }
.solution-box .sol-label { font-weight: 700; color: var(--accent); font-size: 13px; letter-spacing: .2px; }

.ex-success { display: none; margin-top: 12px; padding: 13px 16px; border-radius: var(--sketch-sm); background: var(--green-bg); border: 1.5px solid rgba(158,199,154,.4); font-weight: 700; font-size: 16px; color: var(--green-text); }
.ex-success.show { display: block; animation: viewIn .3s both; }

/* ============================================================
   DOKONČENIE LEKCIE / NAVIGÁCIA
   ============================================================ */
.lesson-finish { margin-top: 50px; padding: 30px; border-radius: var(--sketch); text-align: center; background: var(--panel); border: 2px dashed var(--line); }
.lesson-finish h3 { font-family: var(--font-hand); font-size: 26px; font-weight: 700; color: var(--ink); }
.lesson-finish p { margin: 6px 0 16px; color: var(--ink-2); font-size: 16px; }
.lesson-finish .done-state { font-size: 18px; font-weight: 700; color: var(--green-text); }

.lesson-nav { margin-top: 24px; display: flex; justify-content: space-between; gap: 12px; }
.lesson-nav .btn { max-width: 48%; }
.lesson-nav .nav-title { font-size: 12px; display: block; opacity: .6; font-weight: 400; }

/* ============================================================
   ODZNAKY
   ============================================================ */
.badge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-top: 24px; }
.badge-card { position: relative; padding: 22px 16px; border-radius: var(--sketch); text-align: center; background: var(--panel); border: 2px solid var(--line); transition: transform .2s, box-shadow .2s; }
.badge-card:nth-child(even) { border-radius: var(--sketch-2); transform: rotate(.6deg); }
.badge-card:nth-child(odd) { transform: rotate(-.6deg); }
.badge-card:hover { transform: rotate(0) translateY(-3px); box-shadow: var(--shadow); }
.badge-card.unlocked { border-color: rgba(228,196,106,.5); background: var(--yellow-bg); }
.badge-card .badge-emoji { font-size: 42px; filter: grayscale(1) opacity(.3); transition: .3s; }
.badge-card.unlocked .badge-emoji { filter: none; }
.badge-card h4 { font-family: var(--font-hand); margin-top: 8px; font-size: 20px; font-weight: 700; color: var(--ink); }
.badge-card p { margin-top: 4px; font-size: 14px; color: var(--ink-2); line-height: 1.45; }
.badge-card .badge-state { margin-top: 10px; font-size: 12.5px; font-weight: 700; letter-spacing: .2px; color: var(--ink-3); }
.badge-card.unlocked .badge-state { color: var(--yellow-text); }

/* ============================================================
   TEST (EXAM)
   ============================================================ */
.exam-progress { margin: 22px 0; }
.exam-progress-bar { height: 10px; border-radius: 99px; background: rgba(232,227,214,0.1); overflow: hidden; border: 1px solid var(--line-soft); }
.exam-progress-fill { height: 100%; background: var(--accent); transition: width .4s cubic-bezier(.22,1,.36,1); }
.exam-progress-label { display: flex; justify-content: space-between; font-size: 14px; font-weight: 600; color: var(--ink-2); margin-top: 6px; }

.exam-result { text-align: center; padding: 34px 20px; }
.score-ring { position: relative; width: 180px; height: 180px; margin: 24px auto; }
.score-ring svg { width: 180px; height: 180px; transform: rotate(-90deg); }
.score-ring .srbg { fill: none; stroke: rgba(232,227,214,0.1); stroke-width: 10; }
.score-ring .srfg { fill: none; stroke: url(#scoreGrad); stroke-width: 10; stroke-linecap: round; stroke-dasharray: 502; stroke-dashoffset: 502; transition: stroke-dashoffset 1.6s cubic-bezier(.22,1,.36,1) .3s; }
.score-ring .score-val { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--font-hand); font-size: 46px; font-weight: 700; color: var(--ink); }
.exam-review { text-align: left; margin-top: 30px; }

/* ============================================================
   ŤAHÁK
   ============================================================ */
.cheat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.cheat-card { border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); overflow: hidden; transition: transform .2s, box-shadow .2s; }
.cheat-card:nth-child(even) { border-radius: var(--sketch-2); }
.cheat-card:hover { transform: translateY(-3px) rotate(-.4deg); box-shadow: var(--shadow); }
.cheat-card-head { display: flex; align-items: center; gap: 9px; padding: 12px 16px; border-bottom: 2px dashed var(--line-soft); font-family: var(--font-hand); font-weight: 700; font-size: 19px; color: var(--ink); }
.cheat-card-head .cc-ico { font-size: 18px; }
.cheat-card pre { padding: 14px 16px; font-family: var(--mono); font-size: 12px; line-height: 1.62; overflow-x: auto; color: var(--pc-text); background: var(--pc-editor); margin: 0; }

/* ============================================================
   PROJEKT (CAPSTONE)
   ============================================================ */
.cap-step { margin: 14px 0; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); overflow: hidden; transition: border-color .25s; }
.cap-step:nth-of-type(even) { border-radius: var(--sketch-2); }
.cap-step.done-step { border-color: rgba(158,199,154,.5); }
.cap-step-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; cursor: pointer; user-select: none; transition: background .15s; }
.cap-step-head:hover { background: var(--panel-2); }
.cap-step-num { width: 32px; height: 32px; min-width: 32px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-hand); font-weight: 700; font-size: 17px; background: var(--panel-2); border: 2px solid var(--line); color: var(--ink-2); transition: .25s; }
.cap-step.done-step .cap-step-num { background: var(--green-text); color: #18241a; border-color: transparent; }
.cap-step-head h3 { font-family: var(--font-hand); font-size: 21px; font-weight: 700; flex: 1; color: var(--ink); }
.cap-step-body { display: none; padding: 0 20px 20px; }
.cap-step.open .cap-step-body { display: block; animation: viewIn .3s both; }
.cap-step-body p { font-size: 16px; line-height: 1.65; color: var(--ink); margin: 8px 0; }
.cap-check { display: inline-flex; align-items: center; gap: 9px; margin-top: 12px; cursor: pointer; font-weight: 600; font-size: 16px; user-select: none; color: var(--ink); }
.cap-check input { width: 18px; height: 18px; accent-color: var(--green-text); cursor: pointer; }

/* ============================================================
   TOASTY / LEVELUP / KONFETY
   ============================================================ */
.toast-zone { position: fixed; bottom: 24px; right: 24px; z-index: 220; display: flex; flex-direction: column; gap: 8px; }
.toast {
  display: flex; align-items: center; gap: 11px; padding: 13px 17px; border-radius: var(--sketch-sm);
  background: var(--panel-2); border: 2px solid var(--line); box-shadow: var(--shadow);
  font-weight: 600; font-size: 16px; color: var(--ink); max-width: 370px;
  animation: toastIn .35s cubic-bezier(.22,1.3,.36,1) both;
}
.toast.out { animation: toastOut .3s ease both; }
@keyframes toastIn { from { opacity: 0; transform: translateX(40px) rotate(3deg); } to { opacity: 1; transform: translateX(0) rotate(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateX(40px); } }
.toast .toast-ico { font-size: 20px; }

.levelup-overlay { position: fixed; inset: 0; z-index: 300; display: none; place-items: center; background: rgba(15,14,12,.7); }
.levelup-overlay.show { display: grid; animation: fadeIn .25s both; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.levelup-card { position: relative; text-align: center; padding: 40px 50px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); box-shadow: var(--shadow); overflow: hidden; animation: levelCardIn .4s cubic-bezier(.22,1.4,.36,1) both; max-width: 90vw; }
@keyframes levelCardIn { from { opacity: 0; transform: scale(.85) translateY(20px) rotate(-2deg); } to { opacity: 1; transform: scale(1) translateY(0) rotate(0); } }
.levelup-glow { display: none; }
.levelup-emoji { font-size: 62px; position: relative; }
.levelup-card h2 { font-family: var(--font-hand); font-size: 36px; font-weight: 700; margin-top: 6px; color: var(--accent); position: relative; }
.levelup-card p { margin: 10px 0 22px; color: var(--ink-2); font-size: 17px; position: relative; }
.levelup-card p b { color: var(--ink); font-weight: 700; }
.levelup-card .btn { position: relative; }

#confettiCanvas { position: fixed; inset: 0; z-index: 400; pointer-events: none; }

/* ============================================================
   TRÉNINGOVÉ PROJEKTY (30 zadaní) — v2 so zážitkom
   ============================================================ */
.proj-tier-desc { font-size: 15.5px; color: var(--ink-2); margin: -6px 0 14px; line-height: 1.55; }
.proj-meta-chip {
  padding: 2px 10px; border-radius: var(--sketch-sm); background: var(--panel-2);
  border: 1.5px solid var(--line); font-size: 12.5px; font-weight: 700; color: var(--ink-2); white-space: nowrap;
}
.proj-card-icon { font-size: 24px; line-height: 1; }
.proj-stars { color: var(--yellow-text); border-color: rgba(228,196,106,.4); }
.req-chip.full { color: var(--green-text); border-color: rgba(158,199,154,.5); background: var(--green-bg); }
.proj-lessons { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; margin-top: 14px; }

/* Štatistiky + filtre */
.proj-stats { display: flex; gap: 12px; flex-wrap: wrap; margin: 4px 0 14px; }
.proj-stat {
  flex: 1; min-width: 130px; padding: 12px 16px; text-align: center;
  border-radius: var(--sketch-sm); background: var(--panel); border: 2px solid var(--line);
}
.proj-stat b { display: block; font-family: var(--font-hand); font-size: 26px; color: var(--accent); line-height: 1.1; }
.proj-stat span { font-size: 13px; color: var(--ink-3); }
.proj-filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 6px; }
.proj-filter {
  padding: 6px 14px; border-radius: var(--sketch-sm); background: var(--panel); border: 2px solid var(--line);
  font-family: var(--font); font-size: 14px; font-weight: 700; color: var(--ink-2); cursor: pointer;
  transition: transform .15s, border-color .15s, color .15s;
}
.proj-filter:hover { transform: rotate(-1deg); border-color: var(--ink-2); color: var(--ink); }
.proj-filter.active { background: var(--accent); border-color: var(--accent); color: #1b1a16; }

/* Odporúčaný projekt */
.proj-reco {
  display: flex; align-items: center; gap: 16px; margin: 16px 0 8px; padding: 16px 20px;
  border-radius: var(--sketch); background: var(--blue-bg); border: 2px dashed rgba(143,184,214,.5);
}
.proj-reco-icon { font-size: 34px; }
.proj-reco-text { flex: 1; display: grid; gap: 2px; }
.proj-reco-text b { font-family: var(--font-hand); font-size: 21px; }
.proj-reco-meta { font-size: 13px; color: var(--ink-3); }

/* Demo — ukážka behu (mini terminál / prehliadač) */
.demo-box { border-radius: 8px; overflow: hidden; border: 2px solid var(--line); background: #1d1f21; box-shadow: var(--shadow); }
.demo-head { display: flex; align-items: center; gap: 10px; padding: 7px 12px; background: #2b2d2f; border-bottom: 1px solid #191a1c; }
.demo-dots { display: flex; gap: 6px; }
.demo-dots i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.demo-dots i:nth-child(2) { background: #febc2e; }
.demo-dots i:nth-child(3) { background: #28c840; }
.demo-title, .demo-url { flex: 1; font-family: var(--mono); font-size: 11.5px; color: #9da2a8; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.demo-url { background: #1d1f21; border: 1px solid #3a3d3f; border-radius: 99px; padding: 2px 12px; text-align: center; }
.demo-replay {
  background: transparent; border: 1.5px solid #499c54; color: #7ec488; padding: 2px 12px;
  font-size: 12px; font-weight: 700; border-radius: 99px; cursor: pointer; font-family: var(--font);
  transition: background .2s, transform .15s; white-space: nowrap;
}
.demo-replay:hover { background: rgba(73,156,84,.18); transform: scale(1.04); }
.demo-body {
  padding: 13px 16px; font-family: var(--mono); font-size: 12.5px; line-height: 1.62;
  color: #cfd3c9; white-space: pre-wrap; word-break: break-word; min-height: 64px; max-height: 330px;
  overflow-y: auto; cursor: pointer;
}
.demo-placeholder { color: #6d7278; font-style: italic; font-family: var(--font); font-size: 14px; }

/* Interaktívny checklist požiadaviek */
.req-list { display: grid; gap: 7px; margin: 6px 0 4px; }
.req-item {
  display: flex; gap: 11px; align-items: flex-start; padding: 9px 13px; cursor: pointer;
  border-radius: var(--sketch-sm); background: var(--panel-2); border: 1.5px solid var(--line);
  font-size: 15px; line-height: 1.5; color: var(--ink); transition: border-color .2s, background .2s;
}
.req-item:hover { border-color: var(--accent); }
.req-item input { width: 17px; height: 17px; margin-top: 3px; accent-color: var(--green-text); cursor: pointer; flex-shrink: 0; }
.req-item.req-on { background: var(--green-bg); border-color: rgba(158,199,154,.45); }
.req-item.req-on span { color: var(--ink-2); }

/* Pomôcka + bonus vedľa seba na desktope */
.proj-boxes { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 14px 0 4px; }
.proj-boxes .box { margin: 0; }

/* Pulz na hlavnom checkboxe po splnení požiadaviek */
.cap-check-pulse { animation: capPulse 1.2s ease-in-out 3; }
@keyframes capPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }

@media (max-width: 760px) {
  .proj-meta-chip { display: none; }
  .proj-boxes { grid-template-columns: 1fr; }
  .proj-reco { flex-wrap: wrap; }
}

/* ============================================================
   ROZBOR KÓDU (riadok po riadku) + PYTHON OKIENKO
   ============================================================ */
.explain-card { margin: 18px 0 22px; padding: 16px 18px 10px; border-radius: var(--sketch); background: var(--panel); border: 2px solid var(--line); }
.explain-head { font-family: var(--font-hand); font-size: 24px; font-weight: 700; color: var(--accent); line-height: 1.15; }
.explain-sub { font-size: 14px; color: var(--ink-3); margin: 2px 0 10px; }
.explain-row { display: grid; grid-template-columns: minmax(200px, 44%) 1fr; gap: 14px; padding: 10px 2px; border-top: 1.5px dashed var(--line-soft); align-items: start; }
.explain-code {
  font-family: var(--mono); font-size: 12px; line-height: 1.55; background: var(--pc-editor);
  border-radius: 6px; padding: 8px 11px; white-space: pre-wrap; word-break: break-word;
  color: var(--pc-text); display: block; border: 1px solid rgba(0,0,0,.3);
}
.explain-code .kw { color: #cc7832; font-weight: 600; } .explain-code .str { color: #6a8759; }
.explain-code .num { color: #6897bb; } .explain-code .com { color: #808080; font-style: italic; }
.explain-code .dec { color: #bbb529; } .explain-code .fn { color: #ffc66d; }
.explain-code .builtin { color: #8888c6; } .explain-code .self { color: #94558d; } .explain-code .fstr { color: #cc7832; }
.explain-text { font-size: 15.5px; line-height: 1.6; color: var(--ink); }
.explain-text code { font-family: var(--mono); font-size: .8em; padding: 1px 6px; border-radius: 4px; background: var(--code-bg); color: var(--code-text); white-space: nowrap; }
@media (max-width: 700px) {
  .explain-row { grid-template-columns: 1fr; gap: 7px; }
}

.box-py { background: var(--purple-bg); border-color: rgba(180,150,210,.4); }
.box-py .box-title { color: var(--purple-text); }

/* ============================================================
   PAGE HEAD / MISC
   ============================================================ */
.page-head { margin-bottom: 8px; }
.page-head h1 { font-family: var(--font-hand); font-size: clamp(34px, 5vw, 50px); font-weight: 700; display: flex; align-items: center; gap: 12px; color: var(--ink); line-height: 1.1; }
.page-head p.lead { margin-top: 10px; font-size: 18px; color: var(--ink-2); line-height: 1.6; max-width: 720px; }

.kbd { font-family: var(--mono); font-size: .8em; background: var(--panel-2); border: 1.5px solid var(--line); border-bottom-width: 3px; padding: 1px 6px; border-radius: 4px; color: var(--ink); }

/* ============================================================
   RESPONZÍVNOSŤ
   ============================================================ */
@media (max-width: 1100px) {
  .main { padding-left: 28px; padding-right: 28px; }
  .section-grid, .cheat-grid { grid-template-columns: 1fr; }
  .special-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 980px) {
  .sidebar { transform: translateX(-105%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow); }
  .sidebar-backdrop.show { display: block; opacity: 1; }
  .main { margin-left: 0; }
  .hamburger { display: flex; }
  .compare { grid-template-columns: 1fr; }
  .pc-project { display: none; }
  .brand-text { display: none; }
}
@media (max-width: 560px) {
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .lesson-nav { flex-direction: column; }
  .lesson-nav .btn { max-width: 100%; }
  .level-chip { display: none; }
  .main { padding-left: 16px; padding-right: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .12s !important; }
  .reveal { transform: none; }
}

/* ============================================================
   VÝKON — bez backdrop-filter (šetrí GPU/batériu, fix prehrievania)
   ============================================================ */
* { backdrop-filter: none !important; -webkit-backdrop-filter: none !important; }
.topbar { background: rgba(33, 31, 27, .96); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; }
}

/* ── Vyber kód: interaktívne výbery priamo v kóde ── */
.pick-select {
  font-family: var(--mono); font-size: 12.5px; max-width: 100%;
  background: var(--code-bg); color: var(--code-text);
  border: 1.5px dashed var(--line); border-radius: 8px;
  padding: 2px 6px; margin: 1px 2px; cursor: pointer; vertical-align: baseline;
  appearance: auto;
}
.pick-select:focus { outline: none; border-color: var(--accent); }
.pick-select.ok { border-color: var(--green-text); color: var(--green-text); border-style: solid; }
.pick-select.bad { border-color: var(--red-text); color: var(--red-text); animation: pickShake .3s; }
.pick-select:disabled { opacity: 1; }
.pick-done-token { color: var(--green-text); border-bottom: 1.5px solid var(--green-text); }
@keyframes pickShake { 25% { transform: translateX(-2px); } 75% { transform: translateX(2px); } }