/* ==========================================================================
   Lazo Lab — design tokens
   Themes: dark (default), black, light, mono. Accents set --acc / --acc-deep.
   ========================================================================== */
:root{
  --bg:#07090F; --side:#0A0D15; --surface:#0F1420; --surface-2:#161D2C; --surface-3:#1C2536;
  --rule:#1E2737; --rule-2:#2B3649; --ink:#EDF1F7; --ink-2:#C9D1DE; --muted:#8B96AB;
  --link:#8FC7FF; --good:#4CC38A; --warn:#F0B54A; --bad:#FF6B7D;
  --good-soft:rgba(76,195,138,.14); --bad-soft:rgba(255,107,125,.14);
  --acc:#F5D90A; --acc-deep:#7A6200; --acc-ink:#0A0C10; --acc-text:var(--acc);
  --acc-soft:color-mix(in srgb,var(--acc) 14%,transparent);
  --glow:color-mix(in srgb,var(--acc) 35%,transparent);
  --shadow:0 1px 0 rgba(255,255,255,.03) inset,0 12px 32px -18px rgba(0,0,0,.8);
  --grid:rgba(143,199,255,.05);
  --display:"Archivo","Arial Narrow",Arial,sans-serif;
  --body:"Atkinson Hyperlegible","Segoe UI",Verdana,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --r:14px; --r-sm:9px; --side-w:268px;
  color-scheme:dark; box-sizing:border-box; font-size:16px;
}
[data-theme="black"]{
  --bg:#000; --side:#000; --surface:#0B0B0C; --surface-2:#141416; --surface-3:#1C1C1F;
  --rule:#1F1F22; --rule-2:#2E2E33; --ink:#FFFFFF; --ink-2:#D6D6D9; --muted:#9A9AA2;
  --shadow:none; --grid:rgba(255,255,255,.04);
}
[data-theme="light"]{
  --bg:#F5F6F9; --side:#FFFFFF; --surface:#FFFFFF; --surface-2:#F0F2F6; --surface-3:#E7EAF0;
  --rule:#E2E6ED; --rule-2:#CDD3DE; --ink:#0B1220; --ink-2:#26324A; --muted:#5A6579;
  --link:#1957C2; --good:#13803B; --warn:#A65308; --bad:#C3203D;
  --good-soft:rgba(19,128,59,.1); --bad-soft:rgba(195,32,61,.09);
  --acc-text:var(--acc-deep); --acc-soft:color-mix(in srgb,var(--acc) 22%,transparent);
  --shadow:0 1px 2px rgba(16,24,40,.05),0 10px 28px -16px rgba(16,24,40,.22);
  --grid:rgba(25,87,194,.06);
  color-scheme:light;
}
[data-theme="mono"]{
  --bg:#FFFFFF; --side:#FFFFFF; --surface:#FFFFFF; --surface-2:#F2F2F2; --surface-3:#E6E6E6;
  --rule:#000; --rule-2:#000; --ink:#000; --ink-2:#111; --muted:#444;
  --link:#000; --good:#000; --warn:#000; --bad:#000; --good-soft:#E6E6E6; --bad-soft:#F2F2F2;
  --acc:#000; --acc-deep:#000; --acc-ink:#FFF; --acc-text:#000; --acc-soft:#E6E6E6; --glow:transparent;
  --shadow:none; --grid:rgba(0,0,0,.05);
  color-scheme:light;
}
[data-theme="mono"] [data-color]{--c:#000!important}
[data-theme="mono"] .cc-icon,[data-theme="mono"] .gc-icon,[data-theme="mono"] .ch-icon,[data-theme="mono"] .gp-icon,
[data-theme="mono"] .ss-icon,[data-theme="mono"] .prog-list span[aria-hidden],[data-theme="mono"] .seg span[aria-hidden],
[data-theme="mono"] .flag{filter:grayscale(1)}
[data-theme="mono"] .panel-card,[data-theme="mono"] .course-card,[data-theme="mono"] .game-card{border-width:2px}

[data-accent="yellow"]{--acc:#F5D90A; --acc-deep:#7A6200}
[data-accent="cyan"]{--acc:#22D3EE; --acc-deep:#0E6F84}
[data-accent="green"]{--acc:#4ADE80; --acc-deep:#15803D}
[data-accent="pink"]{--acc:#FF5CA8; --acc-deep:#B3135E}
[data-accent="violet"]{--acc:#B197FC; --acc-deep:#6A3FD6}
[data-accent="orange"]{--acc:#FF9F43; --acc-deep:#B9480B}
[data-accent="red"]{--acc:#FF5F6D; --acc-deep:#BE1E35}
[data-accent="blue"]{--acc:#6CB4FF; --acc-deep:#1C5FC8}
[data-theme="mono"][data-accent]{--acc:#000; --acc-deep:#000}

[data-size="s"]{font-size:15px}
[data-size="l"]{font-size:18px}
[data-size="xl"]{font-size:20px}

/* ==========================================================================
   Base
   ========================================================================== */
*,*::before,*::after{box-sizing:inherit}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:80px}
[data-motion="reduce"] *,[data-motion="reduce"] *::before,[data-motion="reduce"] *::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1.03rem;line-height:1.6;-webkit-font-smoothing:antialiased;padding-bottom:env(safe-area-inset-bottom,0px)}
::selection{background:var(--acc);color:var(--acc-ink)}
a{color:var(--link);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--acc);outline-offset:2px;border-radius:6px}
h1,h2,h3{text-wrap:balance}
p{text-wrap:pretty}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--acc);color:var(--acc-ink);padding:8px 14px;z-index:100;border-radius:8px}
.skip:focus{left:12px}
.muted{color:var(--muted)}
.acc-text{color:var(--acc-text)}
.small-print{font-size:.88rem;margin-top:14px}
code,pre,.mono{font-family:var(--mono)}
p code,li code{font-size:.88em;background:var(--surface-2);padding:.1em .35em;border-radius:4px}
.ico{width:1.15em;height:1.15em;flex:none;vertical-align:-.18em}

/* ==========================================================================
   Shell: sidebar tabs + page
   ========================================================================== */
.shell{display:grid;grid-template-columns:var(--side-w) minmax(0,1fr);min-height:100vh}
.side{position:sticky;top:0;height:100vh;height:100dvh;display:flex;flex-direction:column;gap:14px;padding:calc(16px + env(safe-area-inset-top,0px)) 14px 14px;background:var(--side);border-right:1px solid var(--rule);overflow:hidden}
.side-top{display:flex;align-items:center;justify-content:space-between;padding:4px 8px 6px}
.brand{font-family:var(--display);font-stretch:125%;font-weight:800;font-size:1.3rem;color:var(--ink);text-decoration:none;white-space:nowrap;letter-spacing:-.01em;display:inline-flex;align-items:center}
.brand:hover{color:var(--ink)}
.brand .mark{display:inline-block;width:.62em;height:.62em;background:var(--acc);margin-right:.5em;transform:rotate(45deg);box-shadow:0 0 18px var(--glow);border-radius:2px}
.tabs-side{display:flex;flex-direction:column;gap:2px}
.tab{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:10px;color:var(--ink-2);text-decoration:none;font-weight:700;font-size:.97rem;position:relative;transition:background-color .15s,color .15s}
.tab .ico{width:20px;height:20px;color:var(--muted);transition:color .15s}
.tab:hover{background:var(--surface-2);color:var(--ink)}
.tab:hover .ico{color:var(--ink)}
.tab.on{background:var(--acc-soft);color:var(--ink)}
.tab.on .ico{color:var(--acc-text)}
.tab.on::before{content:"";position:absolute;left:-14px;top:8px;bottom:8px;width:4px;border-radius:0 4px 4px 0;background:var(--acc)}
.tab-btn{width:100%;background:none;border:0;font:inherit;font-weight:700;cursor:pointer;text-align:left}
.side-section{border-top:1px solid var(--rule);padding-top:12px;flex:1 1 auto;min-height:60px;overflow-y:auto;scrollbar-width:thin}
.side-label{margin:0 12px 8px;font-size:.74rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.side-courses{display:flex;flex-direction:column}
.cdot-link{display:flex;align-items:center;gap:11px;padding:6px 12px;border-radius:8px;color:var(--muted);text-decoration:none;font-size:.92rem}
.cdot-link:hover,.cdot-link.on{color:var(--ink);background:var(--surface-2)}
.cdot{width:9px;height:9px;border-radius:3px;background:var(--c,var(--acc));flex:none;transform:rotate(45deg)}
.side-foot{flex:none;display:flex;flex-direction:column;gap:6px;border-top:1px solid var(--rule);padding-top:14px}
.me-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:4px 11px;padding:11px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none;transition:border-color .15s}
.me-card:hover{border-color:var(--rule-2);color:var(--ink)}
.me-text{display:flex;flex-direction:column;min-width:0;line-height:1.25}
.me-text strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.me-text span{font-size:.8rem;color:var(--muted)}
.me-xp{font-family:var(--display);font-weight:800;font-size:1.1rem;color:var(--acc-text);text-align:right;line-height:1}
.me-xp small{display:block;font-size:.66rem;color:var(--muted);font-weight:700;letter-spacing:.06em}
.me-card .bar{grid-column:1/-1;margin-top:6px}
.avatar{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--acc),color-mix(in srgb,var(--acc) 50%,var(--surface-3)));color:var(--acc-ink);font-family:var(--display);font-weight:800;font-size:1.05rem;flex:none}
.avatar.big{width:58px;height:58px;border-radius:16px;font-size:1.6rem}
.avatar.huge{width:96px;height:96px;border-radius:26px;font-size:2.8rem;box-shadow:0 0 0 6px var(--acc-soft)}
.guest-card{padding:14px;border-radius:12px;background:var(--surface);border:1px solid var(--rule);font-size:.9rem}
.guest-card p{margin:0 0 10px;color:var(--muted)}
.guest-card strong{color:var(--ink)}

.page{min-width:0;display:flex;flex-direction:column;padding:0 clamp(18px,4vw,56px)}
main{flex:1;width:100%;max-width:1180px;margin:0 auto}
.mobile-bar{display:none}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:40;backdrop-filter:blur(2px)}

@media (max-width:960px){
  .shell{grid-template-columns:1fr}
  .mobile-bar{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:30;padding:calc(8px + env(safe-area-inset-top,0px)) 16px 8px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
  .mobile-bar .brand{font-size:1.15rem}
  .mobile-bar > :last-child{margin-left:auto}
  .side{position:fixed;left:0;top:0;bottom:0;width:min(86vw,300px);z-index:50;transform:translateX(-102%);transition:transform .25s ease;box-shadow:20px 0 60px rgba(0,0,0,.4)}
  body.nav-open .side{transform:none}
  body.nav-open{overflow:hidden}
  .page{padding:0 16px}
}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--rule);background:var(--surface);color:var(--ink);cursor:pointer}
.icon-btn .ico{width:20px;height:20px}
.icon-btn:hover{border-color:var(--rule-2)}
.side .side-close{display:none}
@media (max-width:960px){.side .side-close{display:inline-grid}}
.xp-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:var(--acc-soft);color:var(--acc-text);font-weight:700;font-size:.9rem;text-decoration:none}
.xp-chip:hover{color:var(--acc-text)}

/* Bars */
.bar,.level-bar,.lesson-progress,.meter{display:block;height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.bar i,.level-bar i,.lesson-progress i,.meter i{display:block;height:100%;width:0;border-radius:inherit;background:var(--c,var(--acc));transition:width .6s cubic-bezier(.2,.8,.2,1)}
.level-bar{height:10px;max-width:520px;margin:14px 0 6px}
.level-bar.big{height:12px}
.level-bar i{background:linear-gradient(90deg,var(--acc),color-mix(in srgb,var(--acc) 60%,#fff));box-shadow:0 0 16px var(--glow)}

/* Flashes */
.flashes{max-width:1180px;margin:18px auto 0;width:100%}
.flash{margin:0 0 8px;padding:12px 16px;background:var(--surface);border:1px solid var(--rule);border-left:4px solid var(--acc);border-radius:10px;animation:drop .3s ease}
@keyframes drop{from{opacity:0;transform:translateY(-6px)}}

/* ==========================================================================
   Buttons and forms
   ========================================================================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font:inherit;font-weight:700;font-size:.98rem;border:2px solid var(--acc);background:var(--acc);color:var(--acc-ink);padding:10px 18px;border-radius:11px;cursor:pointer;text-decoration:none;line-height:1.25;transition:transform .12s,box-shadow .15s,background-color .15s,color .15s,border-color .15s}
.btn:hover{color:var(--acc-ink);transform:translateY(-1px);box-shadow:0 8px 24px -8px var(--glow)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--rule-2)}
.btn.ghost:hover{border-color:var(--ink);box-shadow:none}
.btn.small{padding:6px 12px;font-size:.88rem;border-width:1.5px;border-radius:9px}
.btn.big{padding:14px 22px;font-size:1.04rem;border-radius:13px}
.btn.wide{width:100%;margin-top:22px;padding:13px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.text-btn{background:none;border:none;color:var(--link);font:inherit;font-size:.92rem;cursor:pointer;padding:4px 0;text-decoration:underline;text-underline-offset:3px}
.text-btn.danger{color:var(--bad)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--acc-text);text-decoration:none;white-space:nowrap}
.text-link:hover{color:var(--ink)}
.text-link .ico{transition:transform .15s}
.text-link:hover .ico{transform:translateX(3px)}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;align-items:center}
.row.tight{margin-top:10px;gap:8px}
.row.center{justify-content:center}
.row .field{flex:1;min-width:160px}
.field{width:100%;font:inherit;color:var(--ink);background:var(--surface-2);border:1.5px solid var(--rule-2);border-radius:10px;padding:11px 14px;transition:border-color .15s,box-shadow .15s}
.field:focus{outline:none;border-color:var(--acc);box-shadow:0 0 0 4px var(--acc-soft)}
.field::placeholder{color:var(--muted)}
textarea.field{min-height:110px;resize:vertical}
.f{display:block;font-weight:700;margin:16px 0 6px;font-size:.95rem}
.f.inline{display:inline;margin:0}
.hint{color:var(--muted);font-size:.86rem;margin:6px 0 0}
.form-error{background:var(--bad-soft);color:var(--bad);border:1px solid color-mix(in srgb,var(--bad) 40%,transparent);padding:10px 14px;border-radius:10px;margin:16px 0 0}
input[type=range]{accent-color:var(--acc);width:min(260px,100%)}

/* ==========================================================================
   Sections and cards
   ========================================================================== */
.page-head{padding:clamp(28px,5vw,56px) 0 8px}
.sec-block{padding:clamp(20px,3vw,32px) 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px 24px;flex-wrap:wrap;margin-bottom:18px}
.sec-head .sec-intro{margin-bottom:0}
.eyebrow{margin:0 0 10px;font-size:.8rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--acc-text)}
.page-title{font-family:var(--display);font-stretch:118%;font-weight:800;font-size:clamp(2.1rem,4.6vw,3.4rem);letter-spacing:-.025em;line-height:1.04;margin:0 0 12px}
h2.sec{font-family:var(--display);font-stretch:112%;font-weight:800;font-size:clamp(1.5rem,2.8vw,2.05rem);letter-spacing:-.02em;line-height:1.1;margin:0 0 8px}
h2.sec.small{font-size:1.3rem;margin-bottom:12px}
h2.sec.spaced{margin-top:44px}
.sec-intro{color:var(--muted);max-width:64ch;margin:0 0 22px}
.lede{font-size:1.15rem;color:var(--ink-2);max-width:62ch;margin:0 0 22px}
.panel-card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:clamp(18px,2.4vw,26px);box-shadow:var(--shadow)}
.split{display:grid;grid-template-columns:1.35fr 1fr;gap:22px;align-items:start}
@media (max-width:1100px){.split{grid-template-columns:1fr}}
.notice{background:var(--surface);border:1px solid var(--rule);border-left:4px solid var(--acc);padding:12px 16px;border-radius:10px;max-width:720px;margin:0 0 20px}
.notice.small{font-size:.9rem;margin:16px 0 0}
.tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:2px 8px;border-radius:99px;border:1px solid var(--rule-2);color:var(--muted)}

/* Hero */
.hero{position:relative;padding:clamp(36px,6vw,72px) 0 clamp(24px,4vw,40px);overflow:hidden}
.hero-grid{position:absolute;inset:-40px -200px auto;height:520px;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 60% 70% at 30% 30%,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 60% 70% at 30% 30%,#000 30%,transparent 75%);pointer-events:none}
.hero-copy{position:relative;max-width:780px}
.hero h1{font-family:var(--display);font-stretch:120%;font-weight:800;font-size:clamp(2.4rem,6vw,4.4rem);letter-spacing:-.035em;line-height:1;margin:0 0 20px}
.hl{color:var(--acc-text)}
.hero-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
.hero-stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin:clamp(30px,5vw,48px) 0 0;background:var(--rule);border:1px solid var(--rule);border-radius:var(--r);overflow:hidden}
.hero-stats div{background:var(--surface);padding:18px 20px}
.hero-stats dt{color:var(--muted);font-size:.85rem;font-weight:700}
.hero-stats dd{margin:2px 0 0;font-family:var(--display);font-stretch:120%;font-weight:800;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.1}
@media (max-width:640px){.hero-stats{grid-template-columns:repeat(2,1fr)}}

/* Course cards */
.course-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.course-grid.big{grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.course-card{--c:var(--acc);position:relative;display:flex;flex-direction:column;gap:6px;height:100%;padding:20px;border-radius:var(--r);background:var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none;overflow:hidden;box-shadow:var(--shadow);transition:transform .18s,border-color .18s,box-shadow .18s}
.course-card::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--c)}
.course-card::after{content:"";position:absolute;right:-60px;top:-60px;width:160px;height:160px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--c) 22%,transparent),transparent 70%);pointer-events:none}
.course-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--c) 55%,var(--rule));color:var(--ink);box-shadow:0 18px 40px -22px color-mix(in srgb,var(--c) 70%,transparent)}
.cc-icon{font-size:1.7rem;line-height:1;width:48px;height:48px;display:grid;place-items:center;border-radius:13px;background:color-mix(in srgb,var(--c) 14%,var(--surface-2));margin-bottom:6px}
.cc-level{font-size:.76rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.cc-title{font-family:var(--display);font-stretch:108%;font-weight:800;font-size:1.22rem;line-height:1.15}
.cc-blurb{color:var(--muted);font-size:.93rem;flex:1}
.cc-foot{display:flex;flex-direction:column;gap:7px;margin-top:10px;font-size:.84rem;color:var(--ink-2);font-weight:700}
.cc-foot .ico{color:var(--good)}
.progress-strip{display:flex;align-items:center;gap:16px;max-width:560px;margin:4px 0 22px;padding:14px 18px;border-radius:12px;background:var(--surface);border:1px solid var(--rule)}
.progress-strip .bar{flex:1;height:8px}
.progress-strip.inline{margin:0;flex:1;max-width:380px}
.filters{max-width:560px}
.search-results{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:6px;max-width:760px}
.search-results a{display:flex;justify-content:space-between;gap:14px;padding:11px 16px;border-radius:10px;background:var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none}
.search-results a:hover{border-color:var(--acc)}
.search-results span{color:var(--muted);font-size:.86rem;white-space:nowrap}

/* Course page */
.course-head{--c:var(--acc);padding:clamp(24px,4vw,44px) 0 8px}
.crumbs{margin:0 0 18px;font-size:.92rem}
.crumbs a{display:inline-flex;align-items:center;gap:6px;color:var(--muted);text-decoration:none;font-weight:700}
.crumbs a:hover{color:var(--ink)}
.ch-row{display:flex;gap:22px;align-items:flex-start}
.ch-icon{font-size:2.6rem;width:84px;height:84px;display:grid;place-items:center;border-radius:22px;background:color-mix(in srgb,var(--c) 16%,var(--surface));border:1px solid color-mix(in srgb,var(--c) 35%,var(--rule));flex:none}
.course-head .eyebrow{color:var(--c)}
[data-theme="light"] .course-head .eyebrow,[data-theme="light"] .lesson .eyebrow{color:color-mix(in srgb,var(--c) 60%,#000)}
.ch-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:18px}
.badge-done{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;background:var(--good-soft);color:var(--good);font-weight:700}
@media (max-width:600px){.ch-row{flex-direction:column;gap:14px}.ch-icon{width:64px;height:64px;font-size:2rem}}
.unit{margin-bottom:26px}
.unit-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:10px}
.unit-head h2{font-family:var(--display);font-stretch:108%;font-size:1.3rem;margin:0;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}
.unit-n{font-family:var(--body);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.lesson-list{list-style:none;margin:0;padding:0;border:1px solid var(--rule);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.lesson-list li+li{border-top:1px solid var(--rule)}
.lesson-list a{display:flex;align-items:center;gap:14px;padding:13px 16px;color:var(--ink);text-decoration:none;transition:background-color .12s}
.lesson-list a:hover{background:var(--surface-2)}
.ll-num{width:30px;height:30px;flex:none;display:grid;place-items:center;border-radius:9px;background:var(--surface-2);border:1px solid var(--rule-2);font-family:var(--mono);font-size:.82rem;color:var(--muted)}
.lesson-list a.is-done .ll-num{background:var(--good);border-color:var(--good);color:#fff}
.lesson-list a.is-done .ll-title{color:var(--ink-2)}
.ll-title{flex:1;font-weight:700}
.ll-meta{display:flex;gap:6px}
@media (max-width:520px){.ll-meta{display:none}}

/* Lesson page */
.lesson-layout{--c:var(--acc);display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:40px;padding:clamp(22px,4vw,40px) 0}
@media (max-width:1180px){.lesson-layout{grid-template-columns:1fr}.lesson-nav{display:none}}
.lesson{max-width:780px}
.lesson .eyebrow{color:var(--c);display:flex;gap:8px;align-items:center}
.lesson .ok{color:var(--good);display:inline-flex;align-items:center;gap:4px}
.lesson-progress{height:4px;margin:0 0 22px;max-width:780px}
.lesson-progress i{background:var(--c)}
.key-points{margin:26px 0;padding:20px 22px;border-radius:var(--r);background:var(--surface);border:1px solid var(--rule);border-left:4px solid var(--c)}
.key-points h2{margin:0 0 10px;font-size:.82rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.key-points ul{margin:0;padding-left:20px}
.key-points li{margin:5px 0}
.key-points li::marker{color:var(--c)}
.code{position:relative;margin:22px 0;border-radius:var(--r);background:#05070C;border:1px solid var(--rule)}
[data-theme="light"] .code{background:#0D1424}
[data-theme="mono"] .code{background:#000}
.code pre{margin:0;padding:18px 20px;overflow-x:auto;font-size:.9rem;line-height:1.55;color:#E3E9F3}
.copy{position:absolute;top:10px;right:10px;font:inherit;font-size:.8rem;font-weight:700;padding:5px 10px;border-radius:8px;border:1px solid #2B3649;background:#111827;color:#C9D1DE;cursor:pointer}
.copy:hover{color:#fff;border-color:#4A5670}
.video-card{display:flex;align-items:center;gap:16px;padding:16px 18px;margin:22px 0;border-radius:var(--r);background:var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none;transition:border-color .15s,transform .15s}
.video-card:hover{border-color:#FF4E45;color:var(--ink);transform:translateY(-2px)}
[data-theme="mono"] .video-card:hover{border-color:#000}
.vc-play{width:52px;height:38px;flex:none;display:grid;place-items:center;border-radius:10px;background:#FF0033;color:#fff}
[data-theme="mono"] .vc-play{background:#000}
.vc-play .ico{width:26px;height:26px}
.vc-text{flex:1;display:flex;flex-direction:column;line-height:1.35}
.vc-text span{color:var(--muted);font-size:.88rem}
.video-card > .ico{color:var(--muted)}
.quiz{margin:30px 0;padding:clamp(20px,3vw,28px);border-radius:18px;background:linear-gradient(160deg,color-mix(in srgb,var(--c) 10%,var(--surface)),var(--surface) 60%);border:1px solid color-mix(in srgb,var(--c) 30%,var(--rule));scroll-margin-top:90px}
.quiz-tag{display:inline-flex;align-items:center;gap:6px;margin:0 0 10px;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--acc-text)}
.quiz h2{font-family:var(--display);font-stretch:106%;font-size:1.35rem;line-height:1.25;margin:0 0 18px}
.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:640px){.options{grid-template-columns:1fr}}
.opt{display:flex;align-items:center;gap:12px;text-align:left;font:inherit;color:var(--ink);background:var(--surface);border:1.5px solid var(--rule-2);border-radius:12px;padding:13px 14px;cursor:pointer;transition:border-color .12s,background-color .12s,transform .12s}
.opt:hover{border-color:var(--acc);transform:translateY(-1px)}
.opt-key{width:28px;height:28px;flex:none;display:grid;place-items:center;border-radius:8px;background:var(--surface-2);font-family:var(--mono);font-weight:600;font-size:.85rem;color:var(--muted)}
.opt.correct{border-color:var(--good);background:var(--good-soft)}
.opt.correct .opt-key{background:var(--good);color:#fff}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft);animation:shake .35s}
.opt.wrong .opt-key{background:var(--bad);color:#fff}
.opt:disabled{cursor:default;transform:none}
[data-theme="mono"] .opt.correct{border-width:3px}
[data-theme="mono"] .opt.wrong{text-decoration:line-through}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.quiz-msg{margin:14px 0 0;min-height:1.6em;color:var(--muted);font-weight:700}
.quiz-msg.good{color:var(--good)}
.quiz-msg.bad{color:var(--bad)}
.quiz-next{margin-top:12px}
.xp-pop{position:fixed;z-index:90;pointer-events:none;font-family:var(--display);font-weight:800;font-size:1.6rem;color:var(--acc-text);text-shadow:0 2px 18px var(--glow);animation:pop 1.2s ease forwards}
@keyframes pop{0%{opacity:0;transform:translateY(10px) scale(.8)}20%{opacity:1;transform:translateY(0) scale(1.1)}100%{opacity:0;transform:translateY(-50px) scale(1)}}
.lesson-nav{position:sticky;top:24px;align-self:start;max-height:calc(100vh - 48px);overflow:auto;padding-top:56px}
.lesson-nav ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--rule)}
.lesson-nav a{display:flex;gap:10px;align-items:flex-start;padding:7px 12px;margin-left:-1px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;font-size:.9rem;line-height:1.35}
.lesson-nav a:hover{color:var(--ink)}
.lesson-nav a.on{color:var(--ink);border-left-color:var(--c);font-weight:700}
.ln-dot{width:16px;height:16px;flex:none;margin-top:1px;border-radius:5px;border:1.5px solid var(--rule-2);display:grid;place-items:center}
.lesson-nav a.is-done .ln-dot{background:var(--good);border-color:var(--good);color:#fff}
.ln-dot .ico{width:11px;height:11px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:36px}
.pager a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--rule);border-radius:var(--r);background:var(--surface);color:var(--ink);text-decoration:none;font-weight:700;transition:border-color .15s}
.pager a:hover{border-color:var(--acc)}
.pager a span{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:.84rem}
.pager-next{text-align:right;align-items:flex-end}
@media (max-width:560px){.pager{grid-template-columns:1fr}}

/* Games */
.game-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.game-grid.compact{grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}
.game-card{--c:var(--acc);position:relative;display:flex;flex-direction:column;gap:6px;height:100%;padding:20px;border-radius:var(--r);background:radial-gradient(120% 80% at 100% 0%,color-mix(in srgb,var(--c) 16%,transparent),transparent 60%),var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none;box-shadow:var(--shadow);transition:transform .18s,border-color .18s}
.game-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--c) 60%,var(--rule));color:var(--ink)}
.gc-icon{font-size:2rem;line-height:1}
.gc-name{font-family:var(--display);font-stretch:110%;font-weight:800;font-size:1.2rem;margin-top:6px}
.gc-blurb{color:var(--muted);font-size:.92rem;flex:1}
.gc-foot{display:flex;flex-direction:column;gap:2px;font-size:.84rem;margin-top:10px;padding-top:10px;border-top:1px solid var(--rule)}
.gc-foot strong{color:var(--acc-text)}
.gc-play{position:absolute;top:18px;right:18px;display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:99px;background:var(--c);color:#0A0C10;font-weight:800;font-size:.8rem;opacity:0;transform:translateY(-4px);transition:opacity .15s,transform .15s}
[data-theme="mono"] .gc-play{color:#fff}
.game-card:hover .gc-play,.game-card:focus-visible .gc-play{opacity:1;transform:none}
.game-page{--c:var(--acc);padding:clamp(22px,4vw,40px) 0}
.gp-head{display:flex;gap:18px;align-items:center;margin-bottom:22px}
.gp-icon{font-size:2.4rem;width:76px;height:76px;display:grid;place-items:center;border-radius:20px;background:color-mix(in srgb,var(--c) 16%,var(--surface));border:1px solid color-mix(in srgb,var(--c) 35%,var(--rule));flex:none}
.gp-head .page-title{margin-bottom:4px}
.gp-head .sec-intro{margin:0}
.gp-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}
@media (max-width:1100px){.gp-layout{grid-template-columns:1fr}}
.arena{position:relative;border-radius:18px;background:var(--surface);border:1px solid color-mix(in srgb,var(--c) 30%,var(--rule));overflow:hidden;box-shadow:var(--shadow)}
.hud{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 18px;border-bottom:1px solid var(--rule);background:var(--surface-2);font-size:.92rem;color:var(--muted)}
.hud strong{font-family:var(--mono);color:var(--ink);font-size:1.1rem;margin-left:4px}
#hudExtra{font-weight:700;color:var(--acc-text)}
.stage{position:relative;min-height:440px;display:grid;place-items:center;padding:24px}
.start-screen,.end-screen{text-align:center;max-width:460px;margin:0 auto}
.ss-icon{font-size:3.4rem;display:block;margin-bottom:6px}
.start-screen h2{font-family:var(--display);font-stretch:112%;font-size:1.8rem;margin:0 0 8px}
.start-screen p{color:var(--muted);margin:0 0 20px}
.end-screen{padding:36px 24px}
.end-score{font-family:var(--display);font-stretch:125%;font-weight:800;font-size:4rem;line-height:1;margin:6px 0 8px;color:var(--acc-text)}
.end-score small{display:block;font-size:.9rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-top:6px}
.end-msg{color:var(--ink-2);font-weight:700;min-height:1.6em}
.q-card{width:100%;max-width:620px;text-align:center}
.q-label{color:var(--muted);font-size:.86rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin:0 0 10px}
.q-big{font-family:var(--mono);font-weight:600;font-size:clamp(1.6rem,5vw,2.6rem);letter-spacing:.04em;margin:0 0 22px;word-break:break-all}
.q-big.text{font-family:var(--body);font-weight:700;font-size:clamp(1.2rem,3vw,1.6rem);letter-spacing:0;word-break:normal}
.q-code{text-align:left;margin:0 0 20px}
.q-code pre{margin:0;padding:16px 18px;border-radius:12px;background:#05070C;border:1px solid var(--rule);color:#E3E9F3;font-size:.95rem;overflow-x:auto}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.choices.two{grid-template-columns:1fr 1fr}
@media (max-width:520px){.choices{grid-template-columns:1fr}}
.choice{font:inherit;font-weight:700;padding:14px;border-radius:12px;border:1.5px solid var(--rule-2);background:var(--surface-2);color:var(--ink);cursor:pointer;transition:transform .1s,border-color .1s,background-color .1s}
.choice.mono{font-family:var(--mono);font-weight:500}
.choice:hover{border-color:var(--acc);transform:translateY(-1px)}
.choice.correct{border-color:var(--good);background:var(--good-soft)}
.choice.wrong{border-color:var(--bad);background:var(--bad-soft)}
.choice.big{padding:22px;font-size:1.15rem}
.answer-row{display:flex;gap:10px;max-width:380px;margin:0 auto}
.answer-row .field{text-align:center;font-family:var(--mono);font-size:1.3rem}
.feedback{min-height:1.6em;margin:14px 0 0;font-weight:700}
.feedback.good{color:var(--good)}
.feedback.bad{color:var(--bad)}
.dial{display:flex;align-items:center;justify-content:center;gap:14px;margin:0 0 18px}
.dial output{font-family:var(--mono);font-size:1.2rem;min-width:3ch}
.preview{font-family:var(--mono);font-size:1.3rem;letter-spacing:.12em;color:var(--acc-text);margin:0 0 18px;min-height:1.5em}
.game-canvas{display:block;width:100%;height:auto;max-height:70vh;touch-action:none;cursor:none;border-radius:12px;background:var(--bg)}
.flash-good{animation:fgood .35s}
.flash-bad{animation:fbad .35s}
@keyframes fgood{from{box-shadow:inset 0 0 0 999px var(--good-soft)}}
@keyframes fbad{from{box-shadow:inset 0 0 0 999px var(--bad-soft)}}
.mini-board{list-style:none;margin:0;padding:0}
.mini-board li{display:grid;grid-template-columns:30px 1fr auto auto;gap:10px;align-items:center;padding:9px 6px;border-bottom:1px solid var(--rule)}
.mini-board li:last-child{border-bottom:0}
.mini-board li.is-me{background:var(--acc-soft);border-radius:8px}
.mb-rank{font-family:var(--display);font-weight:800;color:var(--muted);text-align:center}
.podium-1 .mb-rank{color:#F5C518}.podium-2 .mb-rank{color:#B8C2D0}.podium-3 .mb-rank{color:#D08A4E}
[data-theme="mono"] .podium-1 .mb-rank,[data-theme="mono"] .podium-2 .mb-rank,[data-theme="mono"] .podium-3 .mb-rank{color:#000}
.mb-name{font-weight:700;color:var(--ink);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mb-name:hover{color:var(--acc-text)}
.mb-lvl{font-size:.8rem;color:var(--muted)}
.mb-xp{font-family:var(--mono);font-weight:600;color:var(--acc-text)}

/* Leaderboard */
.seg{display:flex;flex-wrap:wrap;gap:6px;padding:5px;border-radius:14px;background:var(--surface);border:1px solid var(--rule);width:fit-content;max-width:100%}
.seg a,.seg label span{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:10px;color:var(--muted);font-weight:700;font-size:.9rem;text-decoration:none;cursor:pointer;white-space:nowrap}
.seg a:hover,.seg label:hover span{color:var(--ink);background:var(--surface-2)}
.seg a.on,.seg input:checked+span{background:var(--acc);color:var(--acc-ink)}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg input:focus-visible+span{outline:3px solid var(--acc);outline-offset:2px}
.seg.small{margin-top:8px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 22px}
.stat-row div{flex:1;min-width:140px;background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:16px 20px}
.stat-row dt{color:var(--muted);font-size:.86rem;font-weight:700}
.stat-row dd{margin:2px 0 0;font-family:var(--display);font-stretch:120%;font-weight:800;font-size:1.9rem;color:var(--acc-text);line-height:1.15}
.stat-row dd small{font-size:1rem;color:var(--muted)}
.podium{list-style:none;margin:8px auto 26px;padding:0;display:grid;grid-template-columns:repeat(3,1fr);align-items:end;gap:12px;max-width:640px}
.podium li{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;min-width:0}
.podium a{font-weight:800;color:var(--ink);text-decoration:none;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.p-score{font-family:var(--mono);color:var(--acc-text);font-weight:600;font-size:.92rem}
.p-block{width:100%;display:grid;place-items:center;border-radius:12px 12px 4px 4px;font-family:var(--display);font-weight:800;font-size:2rem;color:#0A0C10;margin-top:6px}
.p1 .p-block{height:130px;background:linear-gradient(#FFE066,#F5C518)}
.p2 .p-block{height:96px;background:linear-gradient(#E4E9F0,#AEB8C6)}
.p3 .p-block{height:72px;background:linear-gradient(#F0B07A,#C77B3C)}
.p1 .avatar{box-shadow:0 0 0 4px #F5C518,0 0 30px rgba(245,197,24,.4)}
[data-theme="mono"] .p-block{background:#000!important;color:#fff}
[data-theme="mono"] .p1 .avatar{box-shadow:0 0 0 4px #000}
.table-wrap{overflow-x:auto;border:1px solid var(--rule);border-radius:var(--r);background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--rule);vertical-align:middle;white-space:nowrap}
th{color:var(--muted);font-weight:700;font-size:.82rem;letter-spacing:.05em;text-transform:uppercase;background:var(--surface-2)}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:color-mix(in srgb,var(--surface-2) 60%,transparent)}
td a{color:var(--ink);font-weight:700;text-decoration:none}
td a:hover{color:var(--acc-text)}
td.rank{font-family:var(--display);font-weight:800;color:var(--muted);width:1%}
tr.top-3 td.rank{color:var(--acc-text)}
td.pts{font-family:var(--mono);font-weight:600;color:var(--acc-text)}
tr.is-me td{background:var(--acc-soft)!important}
td.wide-cell{white-space:normal;min-width:260px;max-width:480px;overflow-wrap:anywhere}
td.actions{display:flex;gap:14px;flex-wrap:wrap}
td.actions form{margin:0}
.role-admin{color:var(--acc-text);font-weight:700}

/* Profile */
.profile-head{display:flex;gap:28px;align-items:center;padding:clamp(28px,5vw,52px) 0 6px}
.profile-head .page-title{margin-bottom:4px}
.lvl-line{margin:0;color:var(--ink-2)}
@media (max-width:600px){.profile-head{flex-direction:column;align-items:flex-start;gap:16px}}
.prog-list{list-style:none;margin:0;padding:0}
.prog-list li{--c:var(--acc);display:grid;grid-template-columns:1fr auto;gap:6px 12px;padding:10px 0;border-bottom:1px solid var(--rule)}
.prog-list li:last-child{border-bottom:0}
.prog-list a{color:var(--ink);font-weight:700;text-decoration:none}
.prog-list a:hover{color:var(--acc-text)}
.prog-list .bar{grid-column:1/-1}

/* Triad + reviews */
.triad{margin:14px 0 18px;display:grid;gap:0}
.triad div{border-top:1px solid var(--rule);padding:11px 0}
.triad dt{font-family:var(--display);font-weight:800;font-size:1.05rem;color:var(--acc-text)}
.triad dd{margin:2px 0 0;color:var(--muted)}
.avg{display:flex;align-items:baseline;gap:12px;margin:0 0 12px}
.avg-num{font-family:var(--display);font-stretch:125%;font-weight:800;font-size:3.6rem;line-height:1;color:var(--acc-text)}
.avg-of{color:var(--muted)}
.reviews-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:24px;align-items:start}
@media (max-width:900px){.reviews-wrap{grid-template-columns:1fr}}
.stars{border:0;padding:0;margin:0 0 4px;display:flex;flex-direction:column;gap:4px}
.stars legend{font-weight:700;margin-bottom:8px}
.stars input{position:absolute;opacity:0}
.stars label{display:inline-block;padding:4px 10px;border-radius:8px;border:1px solid var(--rule);color:var(--warn);cursor:pointer;width:fit-content;letter-spacing:.1em}
.stars input:checked+label{background:var(--acc);color:var(--acc-ink);border-color:var(--acc)}
.stars input:focus-visible+label{outline:3px solid var(--acc);outline-offset:2px}
.review-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.review{background:var(--surface);border:1px solid var(--rule);border-radius:var(--r);padding:16px 18px}
.review-list.tight .review{padding:12px 0;border:0;border-bottom:1px solid var(--rule);border-radius:0;background:none}
.review-list.tight .review:last-child{border-bottom:0}
.review-head{display:flex;justify-content:space-between;gap:10px;align-items:center}
.review-name{font-weight:800;color:var(--ink);text-decoration:none}
.review-stars{color:var(--warn);letter-spacing:.08em}
.review-stars .dim{color:var(--rule-2)}
.review-body{margin:8px 0 0;color:var(--ink-2);overflow-wrap:anywhere}
.review-foot{display:flex;justify-content:space-between;align-items:center;margin-top:10px;color:var(--muted);font-size:.85rem}
.review-foot form{margin:0}

/* Tools */
.tools-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:20px;align-items:start}
@media (max-width:1100px){.tools-layout{grid-template-columns:1fr}}
.readout{margin:20px 0 12px}
.readout p{margin:0}
.readout .pre,.readout .post{color:var(--muted);font-size:.92rem}
.readout .time{font-family:var(--display);font-stretch:118%;font-weight:800;font-size:clamp(1.6rem,3.4vw,2.3rem);line-height:1.15;margin:4px 0}
.readout.empty .time{color:var(--muted)}
.meter{height:10px}
.verdict{font-weight:800;margin:12px 0 6px;min-height:1.5em}
.tips{margin:0;padding-left:20px;color:var(--ink-2)}
.fine{color:var(--muted);font-size:.84rem;margin:14px 0 0}
.tool-tabs{display:flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:12px;background:var(--surface-2);margin-bottom:18px}
.tool-tabs button{flex:1;font:inherit;font-weight:700;font-size:.9rem;padding:8px 12px;border-radius:9px;border:0;background:none;color:var(--muted);cursor:pointer}
.tool-tabs button:hover{color:var(--ink)}
.tool-tabs button[aria-selected="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.2)}
.tool-panel p{color:var(--muted);margin-top:0}
.out{margin-top:14px;padding:14px 16px;border-radius:10px;background:var(--surface-2);font-family:var(--mono);font-size:.9rem;word-break:break-all;min-height:3em;white-space:pre-wrap}
.out.err{color:var(--bad);font-family:var(--body)}
.kv-grid{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;margin:16px 0 0}
.kv-grid dt{color:var(--muted)}
.kv-grid dd{margin:0;font-family:var(--mono);word-break:break-all}

/* Guides */
.guide-list{list-style:none;margin:8px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.guide-list a{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;padding:18px;border-radius:var(--r);background:var(--surface);border:1px solid var(--rule);color:var(--ink);text-decoration:none;height:100%;transition:border-color .15s}
.guide-list a:hover{border-color:var(--acc)}
.gl-n{grid-row:span 3;font-family:var(--mono);color:var(--acc-text);font-weight:600}
.gl-title{font-family:var(--display);font-weight:800;font-size:1.12rem}
.gl-blurb{color:var(--muted);font-size:.92rem}
.gl-meta{font-size:.8rem;color:var(--muted);margin-top:6px}
.gloss-search{max-width:420px;margin-bottom:16px}
.gloss{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px;margin:0}
.gloss div{background:var(--surface);border:1px solid var(--rule);border-radius:12px;padding:14px 16px}
.gloss dt{font-weight:800;color:var(--acc-text)}
.gloss dd{margin:4px 0 0;color:var(--ink-2);font-size:.94rem}
.article{max-width:760px;padding:clamp(24px,4vw,44px) 0}
.art-sec h2{font-family:var(--display);font-stretch:108%;font-size:1.45rem;margin:34px 0 10px}
.art-sec li{margin:6px 0}

/* Settings */
.settings{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:18px;align-items:start}
.theme-picker{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px}
.theme-opt{display:flex;flex-direction:column;gap:8px;cursor:pointer;font-weight:700;font-size:.9rem;text-align:center}
.theme-opt input,.accent-opt input,.switch input{position:absolute;opacity:0;pointer-events:none}
.swatch{display:grid;grid-template-columns:1fr 2fr;grid-template-rows:1fr 1fr;gap:4px;padding:8px;height:70px;border-radius:12px;border:2px solid var(--rule-2);transition:border-color .15s,box-shadow .15s}
.swatch i{border-radius:4px}
.swatch i:first-child{grid-row:span 2}
.sw-dark{background:#07090F}.sw-dark i{background:#161D2C}.sw-dark i:nth-child(3){background:var(--acc)}
.sw-black{background:#000}.sw-black i{background:#141416}.sw-black i:nth-child(3){background:var(--acc)}
.sw-light{background:#F5F6F9}.sw-light i{background:#fff;box-shadow:0 0 0 1px #E2E6ED}.sw-light i:nth-child(3){background:var(--acc)}
.sw-mono{background:#fff}.sw-mono i{background:#fff;box-shadow:0 0 0 1.5px #000}.sw-mono i:nth-child(3){background:#000}
.sw-system{background:linear-gradient(135deg,#07090F 50%,#F5F6F9 50%)}.sw-system i{background:rgba(128,128,128,.35)}.sw-system i:nth-child(3){background:var(--acc)}
.theme-opt input:checked+.swatch{border-color:var(--acc);box-shadow:0 0 0 4px var(--acc-soft)}
.theme-opt input:focus-visible+.swatch{outline:3px solid var(--acc);outline-offset:2px}
.accent-picker{display:flex;flex-wrap:wrap;gap:12px}
.accent-opt{cursor:pointer}
.dot{display:block;width:40px;height:40px;border-radius:50%;border:3px solid var(--surface);box-shadow:0 0 0 2px var(--rule-2);transition:box-shadow .15s,transform .15s}
.accent-opt:hover .dot{transform:scale(1.08)}
.accent-opt input:checked+.dot{box-shadow:0 0 0 3px var(--ink)}
.accent-opt input:focus-visible+.dot{outline:3px solid var(--ink);outline-offset:3px}
.acc-yellow{background:#F5D90A}.acc-cyan{background:#22D3EE}.acc-green{background:#4ADE80}.acc-pink{background:#FF5CA8}
.acc-violet{background:#B197FC}.acc-orange{background:#FF9F43}.acc-red{background:#FF5F6D}.acc-blue{background:#6CB4FF}
.seg-field{border:0;padding:0;margin:0 0 18px}
.seg-field legend{font-weight:700;margin-bottom:4px}
.seg label{position:relative}
.switch{display:flex;align-items:center;gap:12px;margin:12px 0;cursor:pointer;font-weight:700}
.sw-track{width:46px;height:26px;border-radius:99px;background:var(--surface-3);border:1px solid var(--rule-2);position:relative;flex:none;transition:background-color .15s}
.sw-track::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:var(--ink);transition:transform .18s}
.switch input:checked+.sw-track{background:var(--acc);border-color:var(--acc)}
.switch input:checked+.sw-track::after{transform:translateX(20px);background:var(--acc-ink)}
.switch input:focus-visible+.sw-track{outline:3px solid var(--acc);outline-offset:2px}
.settings h3{font-family:var(--display);margin:18px 0 0}

/* Auth */
.auth{display:grid;place-items:center;padding:clamp(36px,7vw,80px) 0}
.auth-box{width:100%;max-width:440px}
.auth-box .page-title{font-size:clamp(1.8rem,4vw,2.4rem)}
.auth-switch{margin:20px 0 0;text-align:center;color:var(--muted)}

/* Admin */
.admin-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:16px;margin-bottom:28px}
.admin-tools .sec{margin-bottom:6px}

/* Footer */
.foot{width:100%;max-width:1180px;margin:56px auto 0;padding:28px 0 36px;border-top:1px solid var(--rule);display:grid;gap:18px}
.foot-id{display:flex;gap:16px;align-items:center}
.flag{width:60px;height:30px;flex:none;border-radius:3px;box-shadow:0 0 0 1px var(--rule)}
.foot-title{margin:0;font-family:var(--display);font-weight:800;font-size:1.08rem}
.foot-id p{margin:0}
.foot-fine{margin:0;color:var(--muted);font-size:.84rem;max-width:80ch}

/* Owner and role badges */
.badge{display:inline-flex;align-items:center;gap:4px;margin-left:6px;padding:1px 8px;border-radius:99px;font-size:.72rem;font-weight:800;letter-spacing:.03em;vertical-align:2px;white-space:nowrap}
.badge-owner{background:linear-gradient(135deg,#FFE066,#F5A524);color:#2A1A00}
.badge-admin{background:var(--acc-soft);color:var(--acc-text)}
.badge-muted{background:var(--bad-soft);color:var(--bad)}
.owner-text{background:linear-gradient(90deg,#FFD84D,#FF9F43);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
[data-theme="light"] .owner-text{background:linear-gradient(90deg,#B07A00,#C2410C);-webkit-background-clip:text;background-clip:text}
[data-theme="mono"] .owner-text{background:none;color:#000}
[data-theme="mono"] .badge-owner{background:#000;color:#fff}
.avatar.owner{background:linear-gradient(135deg,#FFE066,#F5A524);box-shadow:0 0 18px rgba(245,165,36,.45)}
.avatar.huge.owner{box-shadow:0 0 0 6px rgba(245,165,36,.25),0 0 40px rgba(245,165,36,.35)}

/* Chat */
.chat-page{padding:clamp(22px,4vw,40px) 0;display:flex;flex-direction:column;gap:16px}
.chat-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap}
.chat-head .page-title{margin-bottom:4px}
.chat-head p{margin:0}
.live-dot{display:inline-flex;align-items:center;gap:8px;font-size:.86rem;font-weight:700;color:var(--muted)}
.live-dot::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--muted)}
.live-dot.on{color:var(--good)}
.live-dot.on::before{background:var(--good);box-shadow:0 0 0 4px var(--good-soft);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px transparent}}
.chat-box{position:relative;display:flex;flex-direction:column;padding:0;overflow:hidden;height:min(68vh,720px);min-height:380px}
.chat-log{list-style:none;margin:0;padding:18px clamp(12px,2vw,22px);flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px;scrollbar-width:thin}
.chat-empty{position:absolute;inset:40% 0 auto;text-align:center}
.msg{display:grid;grid-template-columns:36px 1fr;gap:0 12px;padding:6px 8px;border-radius:10px}
.msg:hover{background:var(--surface-2)}
.msg.cont{padding-top:0;padding-bottom:3px}
.msg.cont .avatar{display:none}
.msg-meta,.msg-body{grid-column:2}
.msg.cont .msg-meta{display:none}
.msg .avatar{width:36px;height:36px;font-size:.95rem;grid-row:span 2}
.msg-meta{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;min-width:0}
.msg-name{font-weight:800;color:var(--ink);text-decoration:none}
.msg-name:hover{color:var(--acc-text)}
.msg-lvl{font-size:.74rem;font-weight:700;color:var(--muted);font-family:var(--mono)}
.msg-time{font-size:.76rem;color:var(--muted)}
.msg-body{margin:0;color:var(--ink-2);overflow-wrap:anywhere;white-space:pre-wrap}
.msg.mine .msg-name{color:var(--acc-text)}
.msg.owner .msg-name{color:#F5A524}
[data-theme="mono"] .msg.owner .msg-name{color:#000}
.msg-del{margin-left:auto;opacity:0;font-size:.78rem}
.msg:hover .msg-del,.msg-del:focus-visible{opacity:1}
.chat-jump{position:absolute;left:50%;bottom:86px;transform:translateX(-50%);font:inherit;font-weight:700;font-size:.85rem;padding:6px 14px;border-radius:99px;border:0;background:var(--acc);color:var(--acc-ink);cursor:pointer;box-shadow:0 6px 20px -6px var(--glow)}
.chat-form{display:flex;align-items:center;gap:10px;padding:14px clamp(12px,2vw,18px);border-top:1px solid var(--rule);background:var(--surface-2)}
.chat-form .field{flex:1}
.chat-count{font-size:.78rem;font-family:var(--mono);min-width:5.5ch;text-align:right}
@media (max-width:520px){.chat-count{display:none}}
.chat-error{margin:0;padding:10px 18px;background:var(--bad-soft);color:var(--bad);font-weight:700;font-size:.9rem}

/* Academy, Your turn, badges, certificates */
.side-sub{margin:10px 12px 4px;font-size:.72rem;font-weight:700;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.side-sub:first-child{margin-top:0}
.your-turn{margin:22px 0;padding:18px 20px;border-radius:var(--r);background:color-mix(in srgb,var(--acc) 9%,var(--surface));border:1px dashed color-mix(in srgb,var(--acc) 55%,var(--rule))}
.your-turn p{margin:0}
.yt-label{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--acc-text);margin-bottom:6px!important;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase}
.badge-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.ach{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;padding:16px 12px;border-radius:var(--r);background:var(--surface);border:1px solid var(--rule)}
.ach-icon{font-size:2rem;filter:grayscale(1);opacity:.35}
.ach-name{font-weight:800}
.ach-how{font-size:.8rem;color:var(--muted)}
.ach.got{border-color:color-mix(in srgb,var(--acc) 45%,var(--rule));background:radial-gradient(120% 90% at 50% 0%,var(--acc-soft),transparent 70%),var(--surface)}
.ach.got .ach-icon{filter:none;opacity:1}
.ach.got .ach-how{color:var(--good);font-weight:700}
.cert-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.cert-list a{--c:var(--acc);display:inline-flex;gap:8px;align-items:center;padding:10px 16px;border-radius:12px;background:var(--surface);border:1px solid color-mix(in srgb,var(--c) 45%,var(--rule));color:var(--ink);font-weight:700;text-decoration:none}
.cert-list a:hover{border-color:var(--c)}
.stat-row dd small{font-size:.8rem;font-family:var(--body);font-weight:700}
.cert-page{padding:clamp(24px,4vw,48px) 0}
.cert{--c:var(--acc);max-width:900px;margin:0 auto;padding:14px;border-radius:20px;background:linear-gradient(135deg,var(--c),color-mix(in srgb,var(--c) 40%,#F5D90A))}
.cert-inner{background:#FFFDF6;color:#14171F;border-radius:12px;padding:clamp(28px,6vw,64px) clamp(20px,5vw,56px);text-align:center;border:2px solid rgba(0,0,0,.08)}
.cert-brand{display:inline-flex;align-items:center;font-family:var(--display);font-stretch:125%;font-weight:800;font-size:1.3rem;margin:0}
.cert-brand .mark{display:inline-block;width:.6em;height:.6em;background:#F5D90A;margin-right:.5em;transform:rotate(45deg);box-shadow:0 0 0 2px #14171F}
.cert-kicker{margin:18px 0 26px;font-size:.86rem;letter-spacing:.24em;text-transform:uppercase;font-weight:800;color:#6B5600}
.cert-small{margin:6px 0;color:#4A5160}
.cert-name{font-family:var(--display);font-stretch:118%;font-weight:800;font-size:clamp(2.2rem,6vw,3.8rem);margin:6px 0 10px;letter-spacing:-.02em;border-bottom:2px solid #E7DFC4;display:inline-block;padding:0 24px 8px}
.cert-course{font-family:var(--display);font-size:clamp(1.3rem,3vw,1.9rem);margin:8px 0}
.cert-foot{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin-top:36px}
.cert-foot div{display:flex;flex-direction:column;gap:2px}
.cert-foot span{font-size:.8rem;color:#6B7280}
.cert-seal{font-size:3rem;width:84px;height:84px;display:grid!important;place-items:center;border-radius:50%;background:radial-gradient(circle,#FFE680,#F5B700);box-shadow:0 0 0 6px #FFF3B8}
.cert-code{margin:28px 0 0;font-family:var(--mono);font-size:.72rem;color:#8A8F99;word-break:break-all}
.cert-actions{margin-top:22px}
@media print{
  .side,.mobile-bar,.foot,.flashes,.cert-actions,.skip{display:none!important}
  .shell{display:block}.page{padding:0}
  body{background:#fff}
  .cert{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}