/* Basic Next landing — paleta inspirada nos computadores antigos.
   Todas as cores vivem nestas variáveis; o tema escuro só redefine os tokens. */
:root{
  --ui-scale:1;
  --bg:#F2EDE3;            /* fundo da página */
  --surface:#FFFCF5;       /* cartões e cabeçalho */
  --surface-hover:#E8E1D4; /* bege um pouco mais escuro */
  --text:#242320;          /* texto principal */
  --muted:#625D54;         /* texto secundário */
  --border:#D8D1C5;        /* bordas discretas */
  --code-bg:#171816;
  --code-text:#F1EEE7;
  --code-border:#2C2D29;
  --code-muted:#B4AFA5;
  --code-kw:#C9A7F0;
  --code-str:#A8D8A0;
  --code-host:#86CCE0;
  --code-num:#F0C674;
  --code-comment:#9A958B;
  --ink:#242320;           /* botão principal: grafite */
  --ink-text:#FFFCF5;
  --notice:#B7791F;
  --focus:#2F5FD0;
  --shadow-nav:0 3px 10px rgba(36,35,32,.10);
  --shadow-soft:0 1px 2px rgba(36,35,32,.06);
  --spectrum:linear-gradient(90deg,#ff3b30,#ff9500 18%,#ffcc00 36%,#34c759 54%,#007aff 72%,#5856d6 87%,#af52de);

  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s5:48px;--s6:64px;--s7:80px;
  --gutter:32px;
  --section-gap:var(--s7);
  --radius:12px;
  --radius-sm:8px;
  --mono:ui-monospace,SFMono-Regular,"Cascadia Mono","JetBrains Mono",Menlo,Consolas,monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
.dark{
  --bg:#151513;
  --surface:#1E1F1C;
  --surface-hover:#2A2B27;
  --text:#EDE8DE;
  --muted:#ABA597;
  --border:#3A3934;
  --code-bg:#0F100E;
  --code-border:#2E2F2B;
  --ink:#EDE8DE;
  --ink-text:#151513;
  --notice:#E2B04A;
  --focus:#8AB4FF;
  --shadow-nav:0 3px 10px rgba(0,0,0,.45);
  --shadow-soft:none;
  color-scheme:dark;
}

/* Base -------------------------------------------------------------- */
*,*:before,*:after{box-sizing:border-box}
html{font-size:calc(100% * var(--ui-scale));scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:1rem;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-wrap:break-word;overflow-x:hidden}
img{max-width:100%}
a{color:inherit}
p{margin:0}
h1,h2,h3{margin:0;color:var(--text)}
code,pre,kbd{font-family:var(--mono)}
:not(pre)>code{overflow-wrap:anywhere;font-size:.9em;background:var(--surface-hover);border-radius:4px;padding:.1em .35em}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:8px;z-index:100}
.skip:focus{left:8px;background:var(--ink);color:var(--ink-text);padding:12px 16px;border-radius:var(--radius-sm);text-decoration:none}
.shell{width:min(1160px,100% - 2 * var(--gutter));margin-inline:auto}
.ext{font-size:.85em;margin-left:.25em;opacity:.75}
.prose a,.card a:not(.btn),.footer a,.notice a{text-decoration:underline;text-underline-offset:3px}

/* Ícones ------------------------------------------------------------ */
.icon{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.icon-fill{fill:currentColor;stroke:none}

/* Cabeçalho --------------------------------------------------------- */
/* Fundo todo em rainbow (identidade Commodore), igual nos dois temas.
   Sobre o rainbow os controles usam tinta escura fixa para manter o contraste. */
.site-header{position:sticky;top:0;z-index:50;background:var(--spectrum);box-shadow:var(--shadow-nav)}
.nav-toggle,.site-header:not(.nav-collapsed) .nav-menu{--text:#111;--surface-hover:rgba(255,255,255,.4);--border:rgba(17,17,17,.3);--ink:#111;--ink-text:#fff;--focus:#111}
.nav-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:var(--s2)}
.brand{display:flex;align-items:center;position:relative;z-index:2;flex:none;border-radius:var(--radius-sm)}
/* Logo: tamanho e posição "pendurada" preservados, sem filtros. */
.brand img{display:block;width:88px;height:88px;object-fit:contain;margin:-8px 0 -4px;translate:0 22px}
.nav-menu{display:flex;align-items:center;gap:var(--s2);min-width:0}
.nav-links,.nav-tools{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-tools{gap:4px;padding-left:var(--s2);border-left:1px solid var(--border)}
.nav-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding:0 12px;border-radius:var(--radius-sm);border:1px solid transparent;background:transparent;color:var(--text);font:600 .9375rem/1 var(--sans);text-decoration:none;white-space:nowrap;cursor:pointer;transition:background-color .15s,border-color .15s}
.nav-btn:hover{background:var(--surface-hover)}
.nav-btn.is-github{background:var(--ink);color:var(--ink-text)}
.nav-btn.is-github:hover{background:var(--ink);opacity:.9}
.nav-btn .lang-code{font-weight:700;letter-spacing:.04em;font-size:.8125rem}
.font-ctrl{display:inline-flex;gap:2px}
.font-ctrl .nav-btn{padding:0 8px;font-weight:700;font-size:.875rem}
.nav-toggle{display:none;margin-left:auto}
/* Tooltip explicativo (mouse e teclado) */
[data-tip]{position:relative}
[data-tip]:hover:after,[data-tip]:focus-visible:after{content:attr(data-tip);position:absolute;top:calc(100% + 8px);right:0;z-index:60;padding:6px 10px;border-radius:6px;background:var(--ink);color:var(--ink-text);font:500 .8125rem/1.3 var(--sans);white-space:nowrap;pointer-events:none}

/* Menu recolhido (celular ou falta de espaço) */
.nav-collapsed .nav-toggle{display:inline-flex}
.nav-collapsed .nav-menu{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:var(--s1);padding:var(--s2) var(--gutter) var(--s3);background:var(--surface);box-shadow:var(--shadow-nav);border-top:1px solid var(--border);max-height:calc(100vh - 76px);overflow-y:auto}
.nav-collapsed .nav-menu.is-open{display:flex}
.nav-collapsed .nav-links,.nav-collapsed .nav-tools{flex-direction:column;align-items:stretch;gap:4px}
.nav-collapsed .nav-tools{border-left:0;padding-left:0;padding-top:var(--s1);border-top:1px solid var(--border)}
.nav-collapsed .nav-menu .nav-btn{justify-content:flex-start;width:100%;padding:0 var(--s2)}
.nav-collapsed .font-ctrl{display:flex;gap:var(--s1)}
.nav-collapsed .nav-menu .font-ctrl .nav-btn{width:auto;flex:1;justify-content:center}
.nav-collapsed [data-tip]:after{display:none}
.nav-label-mobile{display:none}
.nav-collapsed .nav-label-mobile{display:inline}

/* Botões ------------------------------------------------------------ */
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--radius-sm);border:1px solid transparent;font:600 1rem/1.2 var(--sans);text-decoration:none;cursor:pointer;transition:background-color .15s,opacity .15s}
.btn-primary{background:var(--ink);color:var(--ink-text)}
.btn-primary:hover{opacity:.88}
.btn-secondary{background:transparent;border-color:var(--border);color:var(--text)}
.btn-secondary:hover{background:var(--surface-hover)}

/* Tipografia de seção ----------------------------------------------- */
main{display:block}
.section{padding-block:var(--section-gap) 0}
.section:last-child{padding-bottom:var(--section-gap)}
.section-head{max-width:720px;margin-bottom:var(--s4)}
.eyebrow{font-size:.8125rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:var(--s1)}
.section h2{font-size:clamp(1.75rem,1.2rem + 1.8vw,2.375rem);line-height:1.15;letter-spacing:-.02em;margin-bottom:12px}
.section-copy{color:var(--muted);font-size:1.125rem;line-height:1.55}
.more-link{margin-top:var(--s3);color:var(--muted)}
.more-link a{color:var(--text);font-weight:600}

/* Abertura ---------------------------------------------------------- */
.hero{display:grid;grid-template-columns:minmax(0,48fr) minmax(0,52fr);gap:40px;align-items:center;padding-top:var(--s7)}
.hero-copy{min-width:0}
.hero-logo{display:block;width:min(240px,55vw);height:auto;margin:0 auto var(--s3)}
.hero h1{font-size:clamp(2.5rem,1.6rem + 2vw,3.25rem);line-height:1.12;letter-spacing:-.03em;margin-bottom:var(--s2)}
.lead{font-size:clamp(1.125rem,1.05rem + .25vw,1.25rem);line-height:1.55;color:var(--muted);max-width:36em;margin-bottom:var(--s3)}
.platforms{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s1);margin-top:var(--s3);color:var(--muted);font-size:.9375rem}
.platforms b{color:var(--text);font-weight:600}
.platforms .sep{opacity:.6}

/* Superfícies ------------------------------------------------------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:var(--s3);min-width:0}
.card h3{font-size:1.1875rem;line-height:1.3;margin-bottom:var(--s1);letter-spacing:-.01em}
.card p{color:var(--muted);line-height:1.55}
.card .card-icon{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);background:var(--bg);margin-bottom:var(--s2);color:var(--text)}
.card .card-icon .icon{width:22px;height:22px}
.card .card-foot{margin-top:var(--s2);display:flex;flex-wrap:wrap;gap:var(--s1) var(--s2);font-size:.9375rem}
.card .card-foot a{font-weight:600;color:var(--text)}
.tag-list{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 0;padding:0;list-style:none}
.tag-list li{font:500 .8125rem/1 var(--mono);padding:6px 8px;border-radius:6px;background:var(--bg);border:1px solid var(--border);color:var(--text)}
.grid{display:grid;gap:var(--s3)}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* Blocos de código --------------------------------------------------- */
.code{background:var(--code-bg);color:var(--code-text);border-radius:var(--radius);border:1px solid var(--code-border);overflow:hidden;min-width:0}
.code-bar{display:flex;align-items:center;justify-content:space-between;gap:var(--s1);min-height:48px;padding:2px 8px 2px var(--s3);border-bottom:1px solid var(--code-border);color:var(--code-muted);font:500 .875rem/1.2 var(--mono)}
.code-bar .file{display:inline-flex;align-items:center;gap:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.code pre{margin:0;padding:var(--s3);overflow-x:auto;font-size:1rem;line-height:1.6;tab-size:4;white-space:pre}
.code pre code{font:inherit;background:none;padding:0;color:inherit}
.code.is-cmd pre{padding-block:var(--s2)}
.copy-btn{display:inline-flex;align-items:center;gap:6px;min-height:44px;min-width:44px;padding:0 12px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--code-text);font:600 .875rem/1 var(--sans);cursor:pointer}
.copy-btn:hover{background:#2A2B27}
.copy-btn:focus-visible{outline-color:#8AB4FF}
.copy-btn .icon{width:18px;height:18px}
.copy-btn.is-ok{color:var(--code-str)}
.copy-btn.is-fail{color:#FFB4A8}
.output{border-top:1px solid var(--code-border);background:#20211E}
.output-label{padding:12px var(--s3) 0;font:700 .75rem/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--code-muted)}
.output pre{padding-top:12px;color:#E6E1D6}
.tk-kw{color:var(--code-kw)}.tk-str{color:var(--code-str)}.tk-host{color:var(--code-host)}.tk-num{color:var(--code-num)}.tk-com{color:var(--code-comment);font-style:italic}

/* Execute, compile e depure */
.mode-card{display:flex;flex-direction:column;gap:12px}
.mode-card .code{margin-top:auto}
.mode-card .code pre{font-size:.9375rem}

/* Abas --------------------------------------------------------------- */
.tabs{min-width:0}
.tablist{display:flex;gap:4px;padding:4px;margin-bottom:var(--s3);border:1px solid var(--border);border-radius:calc(var(--radius-sm) + 4px);background:var(--surface);width:max-content;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin}
.tab{flex:none;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 var(--s2);border:0;border-radius:var(--radius-sm);background:transparent;color:var(--muted);font:600 1rem/1 var(--sans);cursor:pointer;white-space:nowrap}
.tab:hover{background:var(--surface-hover);color:var(--text)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--ink-text)}
.tabpanel:focus-visible{outline-offset:6px}

/* Exemplos */
.example{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:var(--s4);align-items:start}
.example h3{font-size:1.375rem;line-height:1.25;margin-bottom:12px}
.example .prose{color:var(--muted);font-size:1.0625rem}
.example .prose p+p{margin-top:12px}
.meta-list{margin:var(--s3) 0 0;display:grid;gap:12px}
.meta-list dt{font-size:.8125rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.meta-list dd{margin:4px 0 0}
.example .code+.code{margin-top:var(--s2)}

/* Instalação */
.notice{display:flex;gap:12px;align-items:flex-start;max-width:820px;margin-bottom:var(--s4);padding:var(--s2);background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--notice);border-radius:var(--radius-sm);font-size:.9375rem;line-height:1.5}
.notice .icon{color:var(--notice);margin-top:1px}
.notice b{font-weight:700}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:var(--s4);counter-reset:step}
.steps>li{display:grid;grid-template-columns:40px minmax(0,1fr);gap:var(--s2);counter-increment:step}
.steps>li:before{content:counter(step);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:var(--surface);font-weight:700}
.steps h3{font-size:1.1875rem;line-height:1.3;margin:8px 0 8px}
.steps p{color:var(--muted)}
.steps .code{margin-top:12px}
.prereq{margin-bottom:var(--s4);padding:var(--s2) var(--s3);border:1px dashed var(--border);border-radius:var(--radius-sm);color:var(--muted)}
.prereq b{color:var(--text)}

/* Por que */
.principle h3{display:flex;align-items:center;gap:12px}
.principle .card-icon,.follow .card-icon{margin:0}
.mode-card .card-icon{margin-bottom:4px}

/* Depoimento */
.quote{max-width:720px}
.quote blockquote{margin:0;font-size:1.125rem;line-height:1.7;color:var(--text)}
.quote blockquote p+p{margin-top:var(--s2)}
.quote figcaption{margin-top:var(--s3);color:var(--muted)}
.quote figcaption b{color:var(--text)}

/* Acompanhe */
.follow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s3)}
.follow a.card{display:flex;flex-direction:column;gap:8px;text-decoration:none;transition:background-color .15s,border-color .15s}
.follow a.card:hover{background:var(--surface-hover)}
.follow a.card h3{display:flex;align-items:center;gap:12px;margin:0}
.follow a.card p{font-size:.9375rem}

/* Rodapé */
.footer{border-top:1px solid var(--border);background:var(--surface);padding-block:var(--s4);color:var(--muted);font-size:.875rem}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:var(--s2) var(--s3);flex-wrap:wrap}
.footer-social{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0}
.footer-social a{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 10px;border-radius:var(--radius-sm);text-decoration:none;color:var(--muted)}
.footer-social a:hover{background:var(--surface-hover);color:var(--text)}
.footer-social .icon{width:18px;height:18px}

/* Responsivo --------------------------------------------------------- */
@media (max-width:1099px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  :root{--gutter:24px}
}
@media (max-width:899px){
  .hero{grid-template-columns:minmax(0,1fr);gap:var(--s5);padding-top:var(--s6)}
  .grid-3,.follow{grid-template-columns:minmax(0,1fr)}
  .example{grid-template-columns:minmax(0,1fr);gap:var(--s3)}
}
@media (max-width:639px){
  :root{--gutter:16px;--section-gap:var(--s5)}
  .grid-4{grid-template-columns:minmax(0,1fr)}
  .brand img{width:64px;height:64px;margin:-2px 0 0;translate:0 16px}
  .nav-inner{min-height:64px}
  .hero{padding-top:var(--s5)}
  .hero h1{font-size:clamp(1.875rem,1.4rem + 2vw,2.25rem)}
  .actions .btn{flex:1 1 100%}
  .code pre{padding:var(--s2);font-size:.875rem}
  .code-bar{padding-left:var(--s2)}
  .output-label{padding-inline:var(--s2)}
  .card{padding:var(--s2) var(--s2) var(--s3)}
  .steps>li{grid-template-columns:minmax(0,1fr)}
  .steps>li:before{width:32px;height:32px}
  .tablist{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{transition:none!important;animation:none!important}
}

/* Tema: mostra o ícone do tema que o botão ativa. */
.i-sun{display:none}
.dark .i-sun{display:block}
.dark .i-moon{display:none}