/* Trilha OS — sistema de slides (brandkit v2)
   Fonte de verdade do visual dos decks. Cada deck.html lincа este arquivo (../_brand/deck-base.css).
   Regras: rust é a ÚNICA cor de marca · serif itálico só rust e uma palavra · mono só etiqueta ·
   sombra hard (offset, sem blur) · sem gradiente colorido · sem ícone genérico de IA. */

:root{
  --ink:#0E0E0C;
  --paper:#F1ECDF;
  --rust:#C4421A;
  --rust-deep:#8E2F11;
  --line:rgba(14,14,12,.18);
  --mute:rgba(14,14,12,.58);
  --shadow-hard:8px 8px 0 var(--ink);
  --shadow-soft:4px 4px 0 var(--ink);
  --maxw:1040px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:"Inter Tight",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
  scroll-snap-type:y mandatory;
  overflow-x:hidden;
}
/* grão sutil sobre tudo */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:50;opacity:.05;
  mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- slide ---- */
.slide{
  min-height:100vh;width:100%;
  scroll-snap-align:start;
  display:flex;flex-direction:column;justify-content:center;
  padding:8vh 7vw;position:relative;
  border-bottom:1px solid var(--line);
}
.slide-inner{width:100%;max-width:var(--maxw);margin:0 auto}

/* numeração de módulo/aula no topo */
.eyebrow{
  font-family:"JetBrains Mono",monospace;font-size:.72rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--rust);margin-bottom:1.4rem;font-weight:600;
}
.eyebrow .sep{color:var(--mute)}

/* títulos */
h1{font-size:clamp(2.4rem,6vw,4.6rem);font-weight:800;line-height:1.02;letter-spacing:-.035em}
h2{font-size:clamp(1.9rem,4.4vw,3.3rem);font-weight:800;line-height:1.05;letter-spacing:-.03em}
.lead{font-size:clamp(1.05rem,1.7vw,1.4rem);line-height:1.5;color:var(--mute);max-width:62ch;margin-top:1.6rem}
p{font-size:clamp(1rem,1.4vw,1.2rem);line-height:1.55}

/* a palavra-ênfase: serif itálico, rust, UMA por slide */
.serif{font-family:"Instrument Serif",Georgia,serif;font-style:italic;color:var(--rust);font-weight:400}

/* capa */
.cover h1{font-size:clamp(2.8rem,7.5vw,5.6rem)}
.cover .meta{
  font-family:"JetBrains Mono",monospace;font-size:.8rem;letter-spacing:.1em;color:var(--mute);
  margin-top:3rem;display:flex;gap:1.4rem;flex-wrap:wrap;text-transform:uppercase;
}

/* divisor de seção (por aula) */
.section .num{font-family:"JetBrains Mono",monospace;color:var(--rust);font-size:1rem;letter-spacing:.1em}
.section h2{margin-top:.6rem}
.section .lead{margin-top:1.2rem}

/* cartões */
.grid{display:grid;gap:1.1rem;margin-top:2rem}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:var(--paper);border:1.5px solid var(--ink);box-shadow:var(--shadow-soft);
  padding:1.5rem 1.4rem;
}
.card .k{font-family:"JetBrains Mono",monospace;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--rust);font-weight:600}
.card h3{font-size:1.25rem;font-weight:800;margin:.5rem 0 .5rem;letter-spacing:-.02em}
.card p{font-size:.98rem;color:var(--mute);line-height:1.45}

/* lista marcada */
.ticks{list-style:none;margin-top:1.6rem;display:grid;gap:.9rem}
.ticks li{display:flex;gap:.8rem;align-items:flex-start;font-size:clamp(1rem,1.5vw,1.25rem);line-height:1.4}
.ticks li::before{content:"✦";color:var(--rust);font-size:.9em;line-height:1.5}

/* citação */
.quote blockquote{font-size:clamp(1.5rem,3.2vw,2.6rem);font-weight:800;line-height:1.18;letter-spacing:-.02em;max-width:24ch}
.quote .by{font-family:"JetBrains Mono",monospace;font-size:.8rem;color:var(--mute);margin-top:1.6rem;letter-spacing:.08em}

/* gráfico de população (cada ponto = 3,2 mi) — 4 cores fiéis mas editoriais */
.dots{display:flex;flex-wrap:wrap;gap:2px;margin-top:1.3rem;max-width:560px}
.dots i{width:6px;height:6px;border-radius:1px;background:rgba(14,14,12,.16);display:block}
.dots i.verde{background:#7E8C6A}
.dots i.amarelo{background:#C99A3B}
.dots i.vermelho{background:var(--rust);box-shadow:0 0 0 3px rgba(196,66,26,.35);position:relative;z-index:1}
.leg{display:flex;flex-direction:column;gap:6px;margin-top:1.3rem;max-width:460px}
.leg-row{display:flex;align-items:center;gap:10px;font-size:.98rem;color:var(--ink)}
.leg .sw{width:11px;height:11px;border-radius:2px;flex:none}
.leg .sw.cinza{background:rgba(14,14,12,.16)}
.leg .sw.verde{background:#7E8C6A}
.leg .sw.amarelo{background:#C99A3B}
.leg .sw.vermelho{background:var(--rust)}
.leg b{margin-left:auto;font-family:"JetBrains Mono",monospace;font-size:.85rem;font-weight:600;color:var(--mute)}
.leg-cap{font-family:"JetBrains Mono",monospace;font-size:.7rem;color:var(--mute);margin-top:1rem;letter-spacing:.03em}

/* 3 níveis (escada) */
.levels{display:grid;gap:.7rem;margin-top:2rem}
.levels .lv{border:1.5px solid var(--ink);padding:1rem 1.2rem;display:flex;gap:1rem;align-items:baseline;background:var(--paper)}
.levels .lv b{font-family:"JetBrains Mono",monospace;color:var(--rust);font-size:.85rem}
.levels .lv.cur{box-shadow:var(--shadow-soft)}

/* terminal (mostrar comando) */
.term{background:var(--ink);color:var(--paper);font-family:"JetBrains Mono",monospace;
  padding:1.1rem 1.3rem;font-size:.95rem;margin-top:1.8rem;box-shadow:var(--shadow-hard);line-height:1.6}
.term .c{color:var(--rust)}

/* contador + dica */
.counter{position:fixed;bottom:18px;right:22px;font-family:"JetBrains Mono",monospace;font-size:.75rem;color:var(--mute);z-index:40}
.hint{position:fixed;bottom:18px;left:22px;font-family:"JetBrains Mono",monospace;font-size:.68rem;color:var(--mute);z-index:40;letter-spacing:.06em}

/* progress dots (modo apresentação) */
.progress{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);display:none;gap:7px;z-index:40}
.progress b{width:7px;height:7px;border-radius:50%;background:var(--line);transition:.2s}
.progress b.on{background:var(--rust);transform:scale(1.25)}
body.presenting .progress{display:flex}
body.presenting .hint{display:none}
body.presenting .counter{opacity:.75}

/* botão "abrir vista do apresentador" (janela da plateia) */
.present-btn{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);z-index:41;
  font-family:"JetBrains Mono",monospace;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;
  background:var(--ink);color:var(--paper);border:none;padding:9px 16px;cursor:pointer;box-shadow:var(--shadow-soft)}
.present-btn:hover{background:var(--rust)}
body.presenting .present-btn{display:none}

/* ---- VISTA DO APRESENTADOR (janela de notas, ?notes=1) ---- */
#presenter{display:none}
body.notes-mode{overflow:hidden;background:var(--ink)}
body.notes-mode::after{display:none}
body.notes-mode .slide,body.notes-mode .counter,body.notes-mode .hint,body.notes-mode .progress,body.notes-mode .present-btn{display:none!important}
body.notes-mode #presenter{display:flex;flex-direction:column;gap:14px;position:fixed;inset:0;padding:26px;background:var(--ink);color:var(--paper)}
#presenter .ptop{display:flex;justify-content:space-between;align-items:center;font-family:"JetBrains Mono",monospace;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(241,236,223,.55)}
#presenter #ptimer{color:var(--rust);font-weight:600}
#presenter .ptag{font-family:"JetBrains Mono",monospace;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--rust);font-weight:600}
#presenter .pcur{font-family:"Inter Tight",sans-serif;font-size:1.7rem;font-weight:800;line-height:1.12;letter-spacing:-.02em}
#presenter .pfalas{list-style:none;margin-top:4px;flex:1;overflow:auto;display:flex;flex-direction:column;gap:13px}
#presenter .pfalas li{display:flex;gap:11px;font-size:1.25rem;line-height:1.42}
#presenter .pfalas li::before{content:"›";color:var(--rust);font-weight:800}
#presenter .pstop{display:none;background:var(--rust);color:var(--paper);font-family:"JetBrains Mono",monospace;font-weight:600;font-size:.92rem;letter-spacing:.06em;text-transform:uppercase;padding:11px 14px;text-align:center;box-shadow:4px 4px 0 rgba(241,236,223,.25)}
#presenter .pnext{border-top:1px solid rgba(241,236,223,.15);padding-top:12px;font-size:1rem;color:rgba(241,236,223,.6)}
#presenter .pnext b{color:rgba(241,236,223,.92);font-weight:600}
#presenter .pctrl{display:flex;gap:10px}
#presenter .pctrl button{flex:1;background:none;border:1.5px solid rgba(241,236,223,.3);color:var(--paper);padding:13px;font-family:"JetBrains Mono",monospace;font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;cursor:pointer}
#presenter .pctrl button:hover{border-color:var(--rust);color:var(--rust)}

/* ---- impressão / PDF ---- */
/* botão pra abrir as demos ao vivo (só na apresentação, não no PDF) */
.demo-cta{
  display:inline-flex;align-items:center;gap:.5rem;margin-top:2rem;
  font-family:"JetBrains Mono",monospace;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;font-weight:600;
  color:var(--paper);background:var(--rust);text-decoration:none;
  padding:.85rem 1.5rem;border:2px solid var(--ink);box-shadow:var(--shadow-soft);
  transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s cubic-bezier(.2,.8,.2,1);
}
.demo-cta:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.demo-cta:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}

@media print{
  @page{size:1280px 720px;margin:0}
  body{scroll-snap-type:none}
  body::after{display:none}
  .slide{min-height:720px;height:720px;page-break-after:always;border-bottom:none}
  .counter,.hint,.progress,.present-btn,.demo-cta{display:none!important}
}

/* responsivo */
@media (max-width:720px){
  .grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .slide{padding:7vh 8vw}
}