/* =========================================================================
   Comboio — sistema visual do site.

   Os tokens são os MESMOS do app (lib/app/theme.dart › ComboioVisualTokens).
   Se a paleta mudar lá, mude aqui: o site é a vitrine do app, não um projeto
   gráfico separado.
   ========================================================================= */

:root {
  color-scheme: light;

  /* Papel e tinta — ComboioVisualTokens */
  --paper-bg:        #E7D7BA;  /* backgroundPaper */
  --paper-light:     #F1E5CF;  /* paperLight      */
  --paper-texture:   #E4BE98;  /* paperTextureBase*/
  --paper:           #CDB8A4;
  --charcoal:        #1B1A17;
  --dark-ink:        #2D2B27;
  --light-ink:       #C8AC94;
  --bronze:          #9B7149;
  --olive:           #575C30;
  --ochre:           #A56C28;
  --rust:            #842A10;
  --rust-on-dark:    #DE7256;
  --cream:           #E9D9BA;

  /* Paleta de traçado — mapRouteColorPalette (as 6 do app) */
  --route-rust:      #842A10;
  --route-amber:     #B5641F;
  --route-mustard:   #8A7A22;
  --route-pine:      #2F5F5C;
  --route-mulberry:  #6B3A5B;
  --route-ink:       #2B2620;

  --radius:          26px;
  --radius-sm:       14px;
  --shadow:          0 3px 7px rgba(0, 0, 0, .40);
  --shadow-lg:       0 10px 30px rgba(27, 26, 23, .22);

  --font-display: "Bebas Neue", "Oswald", Impact, sans-serif;
  --font-ui:      "Oswald", "Inter", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --max:          1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--charcoal);
  background-color: var(--paper-bg);
  /* Textura de papel feita em CSS: sem baixar imagem, sem borrar no zoom. */
  background-image:
    radial-gradient(ellipse at 12% 0%, rgba(228, 190, 152, .55), transparent 55%),
    radial-gradient(ellipse at 92% 12%, rgba(155, 113, 73, .18), transparent 45%),
    repeating-linear-gradient(102deg, rgba(155, 113, 73, .045) 0 2px, transparent 2px 7px);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1.02;
  margin: 0 0 .35em;
}

h1 { font-size: clamp(2.7rem, 7vw, 4.6rem); }
h2 { font-size: clamp(2rem, 4.4vw, 3rem); }
h3 { font-size: clamp(1.35rem, 2.4vw, 1.7rem); }

p  { margin: 0 0 1em; }

a { color: var(--rust); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ochre); }

.wrap { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }

.eyebrow {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .74rem;
  font-weight: 600;
  color: var(--bronze);
  margin: 0 0 .8em;
}

.lead { font-size: 1.16rem; color: #453f36; max-width: 62ch; }

.muted { color: #6a6055; }

/* ---------------------------------------------------------------- topo --- */

.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(231, 215, 186, .93);
  backdrop-filter: blur(9px);
  border-bottom: 1px solid rgba(155, 113, 73, .32);
}
.topbar .wrap {
  display: flex; align-items: center; gap: 22px;
  min-height: 62px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 1.6rem;
  color: var(--charcoal); text-decoration: none; letter-spacing: .06em;
}
.brand img { width: 30px; height: 30px; object-fit: contain; }
.topnav { display: flex; gap: 20px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.topnav a {
  font-family: var(--font-ui); font-size: .84rem; text-transform: uppercase;
  letter-spacing: .1em; color: #4a4238; text-decoration: none; font-weight: 500;
}
.topnav a:hover { color: var(--rust); }

/* ------------------------------------------------------ barra do painel ---

   O site tem DUAS camadas, e elas não podem parecer a mesma coisa:

   * **público** — quem ainda não tem conta. Papel claro, `.topbar`, navegação
     que fala do aplicativo.
   * **painel** — quem já entrou. Barra escura, igual à do app, navegação que
     fala das SUAS rotas.

   Trocar a moldura é o que avisa "você atravessou a porta" sem precisar de um
   aviso escrito.
   -------------------------------------------------------------------------- */

.app-bar {
  position: sticky; top: 0; z-index: 40;
  background: var(--dark-ink);
  color: var(--cream);
  border-bottom: 1px solid rgba(155, 113, 73, .6);
}
.app-bar .wrap { display: flex; align-items: center; gap: 18px; min-height: 58px; }
.app-bar .brand { color: var(--cream); font-size: 1.35rem; }
/* `.app-nav` fica solto (e não preso a `.app-bar`) porque o editor usa a mesma
   navegação dentro do próprio cabeçalho escuro, que não é uma `.app-bar`. */
.app-nav { display: flex; gap: 6px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.app-nav a, .app-nav button {
  font-family: var(--font-ui); font-size: .76rem; text-transform: uppercase;
  letter-spacing: .1em; font-weight: 500; text-decoration: none;
  color: #C8AC94; background: transparent; border: 1px solid transparent;
  padding: 8px 13px; border-radius: 9px; cursor: pointer; line-height: 1;
}
.app-nav a:hover, .app-nav button:hover {
  color: var(--cream); border-color: rgba(200, 172, 148, .45);
}
.app-nav a[aria-current="page"] {
  color: var(--cream); background: rgba(132, 42, 16, .85);
}
.app-bar .who {
  font-family: var(--font-body); font-size: .82rem; color: #9B7149;
  max-width: 28ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.app-bar .sep { width: 1px; height: 22px; background: rgba(155, 113, 73, .5); }

/* -------------------------------------------------------------- botões --- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-ui); font-size: .88rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em;
  padding: 13px 24px; border-radius: 999px; border: 1.15px solid transparent;
  cursor: pointer; text-decoration: none; transition: transform .12s, filter .12s;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--rust); color: var(--cream); box-shadow: var(--shadow); }
.btn-primary:hover { filter: brightness(1.12); color: var(--cream); }
.btn-dark { background: var(--dark-ink); color: var(--cream); box-shadow: var(--shadow); }
.btn-dark:hover { filter: brightness(1.25); color: var(--cream); }
.btn-ghost { background: transparent; color: var(--charcoal); border-color: rgba(27,26,23,.35); }
.btn-ghost:hover { background: rgba(27,26,23,.06); color: var(--charcoal); }
.btn-sm { padding: 9px 16px; font-size: .78rem; }

/* ------------------------------------------------------------ cartões --- */

.card {
  background: var(--paper-light);
  border: 1.15px solid rgba(155, 113, 73, .5);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.card-dark {
  background: var(--dark-ink);
  color: var(--cream);
  border: 1.15px solid rgba(155, 113, 73, .82);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-dark h3 { color: var(--cream); }
.card-dark a { color: var(--rust-on-dark); }

section { padding: 76px 0; }
section.tight { padding: 46px 0; }

.section-head { max-width: 68ch; margin-bottom: 38px; }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); }

/* ------------------------------------------------------------- avisos --- */

.note {
  border-left: 3px solid var(--ochre);
  background: rgba(165, 108, 40, .1);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .95rem;
}
.note strong { color: var(--rust); }

.alert {
  padding: 12px 16px; border-radius: var(--radius-sm);
  font-size: .93rem; margin: 0 0 16px;
  border: 1px solid transparent;
}
.alert-error { background: rgba(132, 42, 16, .12); border-color: rgba(132,42,16,.4); color: #6d2410; }
.alert-ok    { background: rgba(87, 92, 48, .14);  border-color: rgba(87,92,48,.45);  color: #3d4122; }
.alert:empty { display: none; }

/* ----------------------------------------------------------- etiquetas --- */

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-ui); font-size: .68rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .1em;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(155, 113, 73, .18); color: #5d4a34;
  border: 1px solid rgba(155, 113, 73, .35);
}
.tag-rec  { background: rgba(132,42,16,.14);  color: var(--rust);  border-color: rgba(132,42,16,.35); }
.tag-draw { background: rgba(87,92,48,.16);   color: #454a24;      border-color: rgba(87,92,48,.4); }
.tag-imp  { background: rgba(47,95,92,.14);   color: #24504e;      border-color: rgba(47,95,92,.35); }

/* ----------------------------------------------------------- formulário -- */

label.field { display: block; margin-bottom: 16px; }
label.field > span {
  display: block; font-family: var(--font-ui); font-size: .74rem;
  text-transform: uppercase; letter-spacing: .12em; color: var(--bronze);
  margin-bottom: 6px; font-weight: 600;
}
input[type=text], input[type=email], input[type=password], input[type=search],
select, textarea {
  width: 100%; padding: 12px 14px; font-family: var(--font-body); font-size: 1rem;
  color: var(--charcoal); background: #FBF4E6;
  border: 1.15px solid rgba(155, 113, 73, .55); border-radius: var(--radius-sm);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--rust); box-shadow: 0 0 0 3px rgba(132, 42, 16, .14);
}
textarea { resize: vertical; min-height: 88px; }

/* --------------------------------------------------------------- rodapé -- */

footer.site {
  border-top: 1px solid rgba(155, 113, 73, .35);
  padding: 40px 0 56px;
  font-size: .9rem; color: #6a6055;
}
footer.site .wrap { display: flex; gap: 26px; flex-wrap: wrap; justify-content: space-between; }

/* -------------------------------------------------------- utilitários --- */

.stack-sm > * + * { margin-top: 10px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1 1 auto; }
.center { text-align: center; }
.hidden { display: none !important; }
.mono { font-variant-numeric: tabular-nums; }

.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(233, 217, 186, .35); border-top-color: var(--cream);
  animation: spin .7s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

/* ===================================================================== */
/* TUTORIAL — layout de duas colunas com índice fixo                     */
/* ===================================================================== */

.tut-layout {
  display: grid;
  grid-template-columns: 246px minmax(0, 1fr);
  gap: 46px;
  align-items: start;
}
@media (max-width: 940px) { .tut-layout { grid-template-columns: 1fr; gap: 22px; } }

.tut-toc {
  position: sticky; top: 78px; max-height: calc(100vh - 100px); overflow-y: auto;
  border-right: 1px solid rgba(155, 113, 73, .32); padding-right: 16px;
}
@media (max-width: 940px) {
  .tut-toc {
    position: static; max-height: none; border-right: 0; padding-right: 0;
    border: 1.15px solid rgba(155, 113, 73, .5); border-radius: var(--radius-sm);
    padding: 16px 18px; background: var(--paper-light);
  }
}
.tut-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.tut-toc li { margin: 0 0 2px; }
.tut-toc a {
  display: block; padding: 6px 8px; border-radius: 8px; text-decoration: none;
  font-family: var(--font-ui); font-size: .84rem; color: #5b5145; line-height: 1.3;
}
.tut-toc a:hover { background: rgba(27, 26, 23, .07); color: var(--rust); }
.tut-toc a.active { background: var(--dark-ink); color: var(--cream); }
.tut-toc .toc-title {
  font-family: var(--font-ui); font-size: .68rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--bronze); font-weight: 600;
  margin: 0 0 10px; padding-left: 8px;
}

/* ---------------------------------------------------------- uma tela --- */

.screen { scroll-margin-top: 76px; padding-bottom: 44px; margin-bottom: 44px;
          border-bottom: 1px solid rgba(155, 113, 73, .3); }
.screen:last-child { border-bottom: 0; }
.screen > h2 { margin-bottom: .2em; }

.where {
  display: inline-flex; align-items: center; gap: 7px; flex-wrap: wrap;
  font-family: var(--font-ui); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--olive);
  background: rgba(87, 92, 48, .13); border: 1px solid rgba(87, 92, 48, .32);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 18px;
}
.where b { color: #3d4122; font-weight: 600; }

.screen h3 {
  margin-top: 1.5em; padding-top: .3em;
  border-top: 1px dashed rgba(155, 113, 73, .4);
}
.screen h3:first-of-type { border-top: 0; padding-top: 0; }
.screen h4 {
  font-family: var(--font-ui); font-size: .8rem; text-transform: uppercase;
  letter-spacing: .11em; color: var(--bronze); font-weight: 600;
  margin: 1.4em 0 .5em;
}

/* -------------------------------------------------- referência de botão */

.btn-ref { display: grid; gap: 0; margin: 14px 0 18px; }
.btn-ref .row-ref {
  display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 18px;
  padding: 11px 0; border-bottom: 1px solid rgba(155, 113, 73, .26);
  align-items: start;
}
.btn-ref .row-ref:last-child { border-bottom: 0; }
@media (max-width: 620px) {
  .btn-ref .row-ref { grid-template-columns: 1fr; gap: 3px; }
}
.btn-ref .k {
  font-family: var(--font-ui); font-weight: 600; font-size: .84rem;
  color: var(--charcoal); letter-spacing: .04em;
}
.btn-ref .k small {
  display: block; font-weight: 400; color: var(--bronze);
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  margin-top: 2px;
}
.btn-ref .v { font-size: .94rem; color: #4c453b; }
.btn-ref .v code {
  background: rgba(155, 113, 73, .16); padding: 1px 5px; border-radius: 4px;
  font-size: .88em;
}

/* --------------------------------------------------------- destaques --- */

.tip, .warn {
  border-left: 3px solid var(--olive); background: rgba(87, 92, 48, .1);
  padding: 13px 17px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .93rem; margin: 16px 0;
}
.warn { border-left-color: var(--rust); background: rgba(132, 42, 16, .09); }
.tip b, .warn b { display: block; font-family: var(--font-ui); font-size: .74rem;
  letter-spacing: .12em; text-transform: uppercase; margin-bottom: .35em; }
.tip b { color: #3d4122; }
.warn b { color: var(--rust); }

.steps { counter-reset: st; padding: 0; margin: 14px 0 18px; list-style: none; }
.steps > li {
  counter-increment: st; position: relative; padding-left: 38px;
  margin-bottom: 11px; font-size: .95rem; color: #4c453b;
}
.steps > li::before {
  content: counter(st); position: absolute; left: 0; top: -1px;
  width: 25px; height: 25px; border-radius: 50%;
  background: var(--dark-ink); color: var(--cream);
  font-family: var(--font-ui); font-size: .78rem; font-weight: 600;
  display: grid; place-items: center;
}

.chips-line { display: flex; gap: 7px; flex-wrap: wrap; margin: 10px 0 16px; }
.chips-line span {
  font-family: var(--font-ui); font-size: .76rem; padding: 5px 12px;
  border-radius: 999px; background: rgba(155, 113, 73, .16);
  border: 1px solid rgba(155, 113, 73, .34); color: #5d4a34;
}