/* ==========================================================================
   Fontes (locais: a CSP só permite 'self')
   ========================================================================== */
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-ext-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0,
    U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "DM Sans";
  src: url("/fonts/dm-sans-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 1000;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
    U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "DM Sans";
  src: url("/fonts/dm-sans-latin-ext-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 1000;
  font-display: swap;
  unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0,
    U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ==========================================================================
   Tokens — "papel" (claro, padrão) e "terminal" (escuro, [data-theme="dark"])
   A página é a mesa (--desk); a nota é uma folha (--paper) por cima dela.
   ========================================================================== */
:root {
  color-scheme: light;
  --desk: #f3f0ea;
  --dot: #ddd7cc;
  --paper: #fcfbfa;
  --fg: #1e1e1e;
  --muted: #6e6962;
  --faint: #e9e5df;
  --edge: #2b2926; /* contorno da folha */
  --drop: #dcd5c9; /* sombra chapada, sem desfoque */
  --rule: #ece7df; /* pauta */
  --margin: #eba48c; /* linha da margem */
  --accent: #b5401a; /* tinta: cursor, foco, destaques */
  --ok: #4f7a3a;
  --bad: #b42318;
  --warn: #9a5b06;
  --logo-tile: #1e1e1e;
  --logo-ink: #fcfbfa;
  --logo-caret: #e0a54a;
  --peer-0: #2f6fb0;
  --peer-1: #2e8655;
  --peer-2: #8a46ad;
  --peer-3: #b86e00;
  --peer-4: #c8407a;
  --peer-5: #19858a;
  --pad-font: 16px;
  --mono: "JetBrains Mono", "Fira Code", Menlo, Consolas, ui-monospace, monospace;
  --sans: "DM Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --bar-h: 56px;
  --gutter: clamp(16px, 3vw, 32px);
  --app-h: 100dvh;
}

/* Sem JavaScript: segue o sistema. Com JS, theme-init.js define data-theme. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { color-scheme: dark; }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --desk: #0f0f0d;
  --dot: #23221e;
  --paper: #171715;
  --fg: #e6e3dc;
  --muted: #8f8a80;
  --faint: #2a2925;
  --edge: #4a4740;
  --drop: #2a2925;
  --rule: #22211e;
  --margin: #5a4325;
  --accent: #e0a54a; /* âmbar de fósforo */
  --ok: #8fbf6a;
  --bad: #f07a6a;
  --warn: #e0a54a;
  --logo-tile: #2a2925;
  --logo-ink: #e6e3dc;
  --logo-caret: #e0a54a;
  --peer-0: #6aa8ec;
  --peer-1: #5cc98a;
  --peer-2: #b989e0;
  --peer-3: #f0b13a;
  --peer-4: #f07aa6;
  --peer-5: #4cc3c8;
}

/* ==========================================================================
   Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--desk) radial-gradient(var(--dot) 1px, transparent 1.4px) 0 0 / 22px 22px;
  color: var(--fg);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; background: none; border: 0; padding: 0; }
button:disabled { cursor: default; opacity: 0.35; }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--accent) 26%, transparent); }

.sprite { display: none; }
.icon {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.offscreen { position: fixed; left: -9999px; top: 0; opacity: 0; }

/* Cada tela mostra só o que é dela. */
body[data-view="home"] .note,
body[data-view="home"] .note-only,
body[data-view="home"] .path,
body[data-view="note"] .home { display: none !important; }

[hidden] { display: none !important; }

/* Cores dos cursores (nota real e prévia da página inicial). */
[data-c="0"] { --c: var(--peer-0); }
[data-c="1"] { --c: var(--peer-1); }
[data-c="2"] { --c: var(--peer-2); }
[data-c="3"] { --c: var(--peer-3); }
[data-c="4"] { --c: var(--peer-4); }
[data-c="5"] { --c: var(--peer-5); }

/* ==========================================================================
   Folha: a caixa onde se escreve (nota e prévia)
   ========================================================================== */
.sheet {
  position: relative;
  display: flex;
  min-height: 0;
  background: var(--paper);
  border: 1px solid var(--edge);
  border-radius: 3px;
  box-shadow: 5px 5px 0 var(--drop);
}

/* Pauta e margem acompanham o texto ao rolar (attachment: local). */
.ruled > textarea,
.ruled > pre {
  --line: calc(var(--font) + 10px); /* altura de linha inteira: a pauta não "escorrega" */
  --top: 12px;
  --margin-x: 40px;
  font-size: var(--font);
  line-height: var(--line);
  padding-top: var(--top);
  padding-left: calc(var(--margin-x) + 16px);
  background:
    linear-gradient(90deg, transparent var(--margin-x), var(--margin) 0, var(--margin) calc(var(--margin-x) + 1px), transparent 0) 0 0 / 100% 100% no-repeat local,
    linear-gradient(transparent calc(100% - 1px), var(--rule) 0) 0 var(--top) / 100% var(--line) local;
}

/* ==========================================================================
   Barra superior
   ========================================================================== */
.topbar {
  flex: none;
  display: flex;
  align-items: center;
  gap: 20px;
  height: calc(var(--bar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) calc(var(--gutter) + env(safe-area-inset-right)) 0
    calc(var(--gutter) + env(safe-area-inset-left));
  color: var(--muted);
  font-size: 13px;
  white-space: nowrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--fg);
  text-decoration: none;
  gap: 10px;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.025em;
}
.brand-mark { width: 32px; height: 32px; }
.logo-tile { fill: var(--logo-tile); }
.logo-ink { stroke: var(--logo-ink); }
.logo-caret { fill: var(--logo-caret); }

/* Caminho da nota: parece a URL e é editável. */
.path { display: flex; align-items: baseline; min-width: 0; font-family: var(--mono); font-size: 12.5px; }
.path-origin { overflow: hidden; text-overflow: ellipsis; }
.path input {
  field-sizing: content; /* a largura acompanha o nome */
  min-width: 6ch;
  max-width: 40ch;
  padding: 0;
  border: 0;
  border-bottom: 1px dashed var(--muted);
  outline: 0;
  background: none;
  color: var(--fg);
}
@supports not (field-sizing: content) {
  .path input { width: 18ch; }
}
.path input:focus { border-bottom: 1px solid var(--accent); }
.path input::placeholder { color: var(--muted); }
.path-go { margin-left: 6px; color: var(--muted); visibility: hidden; }
.path:focus-within .path-go { visibility: visible; }
.path-go:hover { color: var(--accent); }

.status { display: inline-flex; align-items: center; gap: 6px; }
.status::before { content: ""; width: 6px; height: 6px; background: var(--muted); }
.status[data-state="ok"]::before { background: var(--ok); }
.status[data-state="saving"] { color: var(--fg); }
.status[data-state="saving"]::before { background: var(--warn); animation: blink 0.8s steps(1) infinite; }
.status[data-state="offline"] { color: var(--bad); }
.status[data-state="offline"]::before { background: var(--bad); }

.actions { display: flex; align-items: center; gap: 4px; margin-left: auto; }

.size { margin-right: 12px; font-family: var(--mono); font-size: 11.5px; font-variant-numeric: tabular-nums; }
.size[data-level="warn"] { color: var(--warn); }
.size[data-level="bad"] { color: var(--bad); }

.bar-btn {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  height: 30px;
  padding: 0 4px;
  border-radius: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}
.bar-btn:hover:not(:disabled) { color: var(--fg); background: var(--faint); }

/* Ícone do tema: mostra o destino (sol no escuro, lua no claro). */
:root:not([data-theme="dark"]) .show-dark,
:root[data-theme="dark"] .show-light { display: none; }

/* Quantas pessoas estão na nota: só o número, numa etiqueta. */
.presence,
.demo-count {
  min-width: 26px;
  height: 22px;
  margin-left: 8px;
  padding: 0 6px;
  border: 1px solid var(--edge);
  border-radius: 3px;
  color: var(--fg);
  font: 600 12px/20px var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.presence[data-many],
.demo-count { background: var(--accent); border-color: var(--accent); color: var(--paper); }

/* ==========================================================================
   Página inicial
   ========================================================================== */
main { flex: 1; display: flex; flex-direction: column; min-height: 0; }

.home {
  display: grid;
  grid-template-columns: minmax(0, 60ch) minmax(300px, 440px);
  justify-content: space-between;
  align-items: start;
  align-content: center;
  gap: 32px 64px;
  width: 100%;
  max-width: 1200px;
  /* Os espaços acompanham a ALTURA da tela: a página inicial cabe sem rolagem. */
  margin-block: auto;
  padding: clamp(12px, 4vh, 64px) calc(var(--gutter) + env(safe-area-inset-right)) clamp(12px, 3vh, 40px)
    calc(var(--gutter) + env(safe-area-inset-left));
}

.kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(8px, 1.8vh, 20px);
  color: var(--muted);
  font: 12px var(--mono);
}
.kicker::before { content: ""; width: 18px; height: 2px; background: var(--accent); }

.home h1 {
  margin: 0 0 clamp(8px, 1.6vh, 16px);
  font-size: clamp(28px, min(5.2vw, 7.5vh), 56px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 650;
  text-wrap: balance;
}

/* O rabisco embaixo de "junto": desenhado uma vez, ao carregar. */
.scribble { position: relative; white-space: nowrap; }
.scribble svg { position: absolute; left: -2%; bottom: -0.16em; width: 104%; height: 0.3em; overflow: visible; }
.scribble path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-dasharray: 1;
  animation: draw 0.9s ease-out 0.25s backwards;
}

.lead { margin: 0 0 clamp(12px, 3vh, 32px); max-width: 52ch; color: var(--muted); font-size: clamp(15px, 2.4vh, 17px); text-wrap: pretty; }

.home-form {
  display: flex;
  align-items: center;
  gap: 8px 16px;
  padding: 8px 8px 8px 16px;
  background: var(--paper);
  border: 1px solid var(--edge);
  border-radius: 3px;
  box-shadow: 5px 5px 0 var(--drop);
}
.home-form:focus-within { box-shadow: 5px 5px 0 color-mix(in srgb, var(--accent) 45%, var(--drop)); }
.home-input {
  flex: 1;
  display: flex;
  align-items: baseline;
  min-width: 0;
  font-family: var(--mono);
  font-size: 17px;
}
.home-origin { color: var(--muted); overflow: hidden; text-overflow: ellipsis; max-width: 50%; }
.home-input input { flex: 1; min-width: 0; padding: 6px 0; border: 0; outline: 0; background: none; caret-color: var(--accent); }
.home-input input::placeholder { color: color-mix(in srgb, var(--muted) 70%, transparent); }

.text-btn { color: var(--muted); font-size: 14px; text-decoration: underline dashed; text-underline-offset: 4px; }
.text-btn:hover { color: var(--fg); }

.primary-btn {
  flex: none;
  height: 40px;
  padding: 0 18px;
  border-radius: 3px;
  background: var(--fg);
  color: var(--paper);
  font-size: 14px;
  font-weight: 650;
  box-shadow: 3px 3px 0 var(--accent);
  transition: transform 0.08s, box-shadow 0.08s;
}
.primary-btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--accent); }
.primary-btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--accent); }

.hint { min-height: 20px; margin: 6px 0 0; color: var(--bad); font-size: 14px; }

.steps { margin: clamp(4px, 1.6vh, 24px) 0 0; padding: 0; list-style: none; counter-reset: step; color: var(--muted); }
.steps li { counter-increment: step; position: relative; padding: clamp(2px, 0.6vh, 6px) 0 clamp(2px, 0.6vh, 6px) 4ch; border-top: 1px dashed var(--faint); }
.steps li:last-child { border-bottom: 1px dashed var(--faint); }
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  color: var(--accent);
  font: 600 12px/1.9 var(--mono);
}
.steps strong { color: var(--fg); font-weight: 600; }

.notice { margin: clamp(8px, 2vh, 24px) 0 0; color: var(--muted); font-size: 13px; }

/* Prévia: uma folha de verdade, um pouco torta sobre a mesa. */
.demo { margin: 24px 0 0; transform: rotate(1.2deg); }
.demo-bar { display: flex; align-items: center; gap: 10px; margin: 0 0 8px 4px; color: var(--muted); font: 12px var(--mono); }
.demo-bar .demo-count { margin-left: auto; }
.demo-sheet pre {
  --font: 14px;
  flex: 1;
  margin: 0;
  padding-right: 16px;
  padding-bottom: 20px;
  font-family: var(--mono);
  white-space: pre-wrap;
}
.demo-caret {
  position: relative;
  display: inline-block;
  width: 2px;
  height: 1.3em;
  margin-left: 1px;
  vertical-align: -0.3em;
  background: var(--c);
}
.demo-caret.own { --c: var(--accent); animation: blink 1.1s steps(1) infinite; }

/* ==========================================================================
   Nota — a folha ocupa toda a área abaixo da barra
   ========================================================================== */
/* Na nota, a página tem a altura exata da área visível (teclado incluso). */
body[data-view="note"] { height: var(--app-h); min-height: 0; overflow: hidden; }

.note {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0 calc(var(--gutter) + 5px + env(safe-area-inset-right)) 5px calc(var(--gutter) + env(safe-area-inset-left));
}
.note .sheet { flex: 1; overflow: hidden; }

#pad {
  --font: var(--pad-font); /* mínimo 16px no celular evita o zoom automático do iOS; ver initFontSize */
  flex: 1;
  width: 100%;
  margin: 0;
  resize: none;
  border: 0;
  outline: 0;
  padding-right: 20px;
  padding-bottom: 30vh;
  color: var(--fg);
  caret-color: var(--accent);
  font-family: var(--mono);
  font-variant-ligatures: none;
  tab-size: 4;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  scrollbar-width: thin;
  scrollbar-color: var(--edge) transparent;
}
#pad::placeholder { color: color-mix(in srgb, var(--muted) 75%, transparent); }
#pad:disabled { cursor: progress; opacity: 0.5; }

/* Cursores das outras pessoas: uma linha fina com uma bandeirinha, na cor de cada uma. */
.cursors { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.peer { position: absolute; top: 0; left: 0; width: 2px; margin-left: -1px; background: var(--c); }
.peer::before,
.demo-caret::before { content: ""; position: absolute; top: -2px; left: 0; width: 6px; height: 5px; background: var(--c); }

/* ==========================================================================
   Rodapé (só na página inicial)
   ========================================================================== */
.site-footer {
  flex: none;
  padding: clamp(8px, 1.4vh, 16px) calc(var(--gutter) + env(safe-area-inset-right)) calc(clamp(8px, 1.4vh, 16px) + env(safe-area-inset-bottom))
    calc(var(--gutter) + env(safe-area-inset-left));
  border-top: 1px dashed var(--dot);
  color: var(--muted);
  font-size: 12px;
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--fg); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.site-footer a:hover { color: var(--accent); }
.site-footer .version { font-family: var(--mono); font-size: 11px; }

/* Na nota, o rodapé vira uma linha só abaixo da folha e some com o teclado aberto. */
body[data-view="note"] .site-footer {
  flex: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2px 16px;
  padding-top: 10px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  border-top: 0;
  font-size: 11.5px;
}
.kb-open body[data-view="note"] .site-footer { display: none; }

/* ==========================================================================
   Aviso
   ========================================================================== */
.toast {
  position: fixed;
  left: calc(var(--gutter) + env(safe-area-inset-left));
  bottom: calc(24px + env(safe-area-inset-bottom));
  z-index: 10;
  max-width: calc(100vw - 2 * var(--gutter) - 4px);
  padding: 8px 12px;
  border-radius: 3px;
  background: var(--fg);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12.5px;
  box-shadow: 3px 3px 0 var(--accent);
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 0.15s, transform 0.15s;
}
.toast.show { opacity: 1; transform: none; }

@keyframes blink { 50% { opacity: 0; } }
@keyframes draw { from { stroke-dashoffset: 1; } }

/* ==========================================================================
   Responsivo
   ========================================================================== */
@media (pointer: coarse) {
  .bar-btn { min-width: 36px; height: 36px; }
}

@media (max-width: 1100px) {
  .home { grid-template-columns: minmax(0, 1fr); max-width: 680px; }
  .demo { transform: rotate(0.8deg); margin: 0 6px 0 0; }
}
/* Numa coluna só, a prévia empurraria o rodapé para fora: só aparece em telas altas. */
@media (max-width: 1100px) and (max-height: 1199px) {
  .demo { display: none; }
}

/* Telas baixas (notebook, janela reduzida): barra e passos mais compactos. */
@media (max-height: 720px) {
  :root { --bar-h: 48px; }
  .steps li { font-size: 14px; }
}

@media (max-width: 760px) {
  .size { display: none; }
  .topbar { gap: 12px; }
}

@media (max-width: 560px) {
  :root { --bar-h: 48px; }
  .brand-mark { width: 28px; height: 28px; }
  body[data-view="note"] .site-footer { justify-content: center; text-align: center; padding-top: 8px; }
  .brand-name { display: none; }
  .path-origin { display: none; }
  .path input { max-width: 38vw; }
  .path::before { content: "/"; color: var(--muted); }
  .font-ctrl { display: none; }

  .note { padding: 0 11px calc(11px + env(safe-area-inset-bottom)) 8px; }
  .sheet { box-shadow: 3px 3px 0 var(--drop); }
  .ruled > #pad { --margin-x: 22px; padding-left: calc(var(--margin-x) + 10px); padding-right: 12px; }

  .home-form { flex-wrap: wrap; padding: 12px; }
  .home-input { flex-basis: 100%; }
  .primary-btn { flex: 1; }
  .home h1 { font-size: clamp(26px, 8vw, 34px); }
  .lead { font-size: 15px; }
  .site-footer { text-align: center; }
}

/* Celular baixo: os passos repetem o que o texto já diz; saem para tudo caber. */
@media (max-width: 560px) and (max-height: 820px) {
  .steps { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}