:root {
  --ink:      #14161a;
  --slate:    #1c2027;
  --slate-2:  #2a3038;
  --slate-3:  #353d47;
  --line:     #3a424d;
  --muted:    #98a1ae;
  --paper:    #fdfdfc;
  --paper-2:  #f1efea;
  --mark:     #e23e2c;  /* vermelho de revisor */
  --ok:       #3aa06b;
  --ui:       "IBM Plex Sans", system-ui, sans-serif;
  --serif:    "Spectral", Georgia, serif;
  --radius:   6px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--ink); color: #e7eaee;
  font: 400 14px/1.5 var(--ui);
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.dot { color: var(--line); margin: 0 .5rem; }

/* ---------- controles ---------- */
button, input, select, textarea { font: inherit; color: inherit; }
.btn {
  border: 1px solid transparent; border-radius: var(--radius);
  padding: .45rem .8rem; background: none; cursor: pointer;
  transition: background .12s, border-color .12s;
}
.btn:focus-visible, .tb:focus-visible, .chip:focus-visible { outline: 2px solid var(--mark); outline-offset: 2px; }
.btn-primary { background: var(--mark); color: #fff; font-weight: 500; }
.btn-primary:hover { background: #c93625; }
.btn-ghost { color: var(--muted); border-color: var(--line); }
.btn-ghost:hover { color: #fff; border-color: var(--slate-3); background: var(--slate-2); }
.btn-mini { border: 1px solid var(--line); color: var(--muted); padding: .1rem .5rem; line-height: 1.4; }
.btn-mini:hover { color: #fff; background: var(--slate-2); }
.btn-danger { color: var(--mark); border-color: var(--line); }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], textarea, .mini-select {
  background: var(--slate); border: 1px solid var(--line);
  border-radius: var(--radius); padding: .5rem .6rem; width: 100%;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--slate-3); }
.mini-select { width: auto; padding: .2rem .35rem; font-size: 12px; }
label.field { display: block; margin-bottom: .75rem; }
label.field > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: .25rem; }
.error { color: var(--mark); min-height: 1.2em; margin: .75rem 0 0; font-size: 13px; }

/* ---------- entrada ---------- */
.gate { display: grid; place-items: center; min-height: 100%; padding: 2rem; }
.gate-card { width: 100%; max-width: 22rem; }
.gate-mark { width: 3px; height: 44px; background: var(--mark); margin-bottom: 1.25rem; }
.gate h1 { font: 600 2rem/1 var(--serif); margin: 0 0 .35rem; }
.gate-sub { color: var(--muted); margin: 0 0 2rem; }
.tabs { display: flex; gap: 1.25rem; border-bottom: 1px solid var(--line); margin-bottom: 1.25rem; }
.tab { background: none; border: 0; border-bottom: 2px solid transparent;
       padding: 0 0 .6rem; color: var(--muted); cursor: pointer; }
.tab.is-active { color: #fff; border-color: var(--mark); }
.gate form { display: grid; gap: .6rem; }

/* ---------- topo ---------- */
.topbar {
  display: flex; align-items: center; gap: .6rem;
  padding: .6rem 1rem; background: var(--slate);
  border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 600; }
.brand-mark { width: 3px; height: 16px; background: var(--mark); }
.studio-title { font-family: var(--serif); font-size: 1rem; }
.save-state { font-size: 12px; min-width: 6rem; }

/* ---------- estante ---------- */
.shelf-body { max-width: 62rem; margin: 0 auto; padding: 2.5rem 1.25rem; }
.shelf-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap; }
.shelf-head h2 { font: 600 1.4rem var(--serif); margin: 0; }
.filters { display: flex; gap: .4rem; }
.chip {
  border: 1px solid var(--line); background: none; color: var(--muted);
  border-radius: 999px; padding: .25rem .75rem; font-size: 12px; cursor: pointer;
}
.chip.is-active { color: var(--ink); background: var(--paper-2); border-color: var(--paper-2); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; }
.card {
  background: var(--slate); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem; cursor: pointer; display: grid; gap: .35rem;
  border-left: 3px solid var(--slate-3); transition: border-color .12s, transform .12s;
}
.card:hover { border-left-color: var(--mark); transform: translateY(-1px); }
.card h3 { font: 600 1.05rem var(--serif); margin: 0; }
.card .type { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.card .meta { font-size: 12px; color: var(--muted); }
.card-empty { color: var(--muted); grid-column: 1 / -1; padding: 3rem 0; text-align: center; }

/* ---------- oficina ---------- */
.studio { display: flex; flex-direction: column; height: 100%; }
.studio-body { display: flex; flex: 1; min-height: 0; }

.tree-pane {
  width: 17rem; flex-shrink: 0; background: var(--slate);
  border-right: 1px solid var(--line); overflow-y: auto; padding-bottom: 2rem;
}
.pane-head {
  display: flex; align-items: center; gap: .4rem; padding: .7rem .8rem;
  font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--slate); z-index: 1;
}
.pane-head > span:first-child { flex: 1; }
.tree { padding: .4rem 0; }
.tree-item {
  display: flex; align-items: center; gap: .4rem; padding: .35rem .8rem;
  cursor: pointer; border-left: 2px solid transparent;
}
.tree-item:hover { background: var(--slate-2); }
.tree-item.is-active { background: var(--slate-2); border-left-color: var(--mark); }
.tree-item .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-item .wc { font-size: 11px; color: var(--muted); }
.tree-item[data-kind="part"] .t { font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: .06em; }
.tree-actions { display: none; gap: .15rem; }
.tree-item:hover .tree-actions { display: flex; }
.tree-actions button { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 0 .2rem; }
.tree-actions button:hover { color: #fff; }
.side-panel { padding: .6rem .8rem; display: grid; gap: .5rem; }
.side-item { border: 1px solid var(--line); border-radius: var(--radius); padding: .5rem .6rem; cursor: pointer; }
.side-item:hover { background: var(--slate-2); }
.side-item b { display: block; font-weight: 500; }
.side-item small { color: var(--muted); }
.side-item .abnt { font-family: var(--serif); font-size: 12px; line-height: 1.4; color: #cfd5dd; }

.editor-pane { flex: 1; overflow-y: auto; background: var(--slate-2); min-width: 0; }
.empty { display: grid; place-items: center; height: 100%; color: var(--muted); }
.toolbar {
  display: flex; align-items: center; gap: .25rem; padding: .4rem .8rem;
  background: var(--slate); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 2; flex-wrap: wrap;
}
.tb {
  min-width: 1.9rem; height: 1.9rem; border: 1px solid transparent; border-radius: 4px;
  background: none; color: var(--muted); cursor: pointer; padding: 0 .4rem; font-size: 13px;
}
.tb:hover { background: var(--slate-2); color: #fff; }
.tb-sep { width: 1px; height: 1.2rem; background: var(--line); margin: 0 .4rem; }

/* A régua e a página */
.page-rig { display: flex; justify-content: center; gap: 1.25rem; padding: 2.5rem 1.25rem 6rem; }
.ruler {
  width: 3px; background: var(--line); border-radius: 2px; position: relative;
  align-self: stretch; min-height: 12rem;
}
.ruler-fill {
  position: absolute; bottom: 0; left: 0; right: 0; height: 0;
  background: var(--mark); border-radius: 2px; transition: height .3s ease;
}
.ruler.is-met .ruler-fill { background: var(--ok); }
.ruler::after { /* traço do alvo */
  content: ""; position: absolute; top: 0; left: -3px; right: -3px;
  height: 1px; background: var(--muted);
}

.page {
  background: var(--paper); color: var(--ink); width: 100%; max-width: 42rem;
  border-radius: 2px; padding: 3.5rem 4rem; box-shadow: 0 10px 40px rgba(0,0,0,.35);
}
.node-title {
  border: 0; background: none; padding: 0; width: 100%; color: var(--ink);
  font: 600 1.6rem/1.3 var(--serif); margin-bottom: 1.5rem;
}
.node-title::placeholder { color: #c3bfb6; }
.editor {
  font: 400 1.05rem/1.75 var(--serif); min-height: 24rem; outline: none;
}
.editor p { margin: 0 0 1rem; text-align: justify; }
.editor h2 { font-size: 1.3rem; margin: 2rem 0 .8rem; }
.editor h3 { font-size: 1.1rem; margin: 1.5rem 0 .6rem; }
.editor blockquote {
  margin: 1.5rem 0 1.5rem 2.5rem; font-size: .9rem; line-height: 1.4;
  border-left: 2px solid var(--paper-2); padding-left: 1rem;
}
.editor:empty::before { content: attr(data-ph); color: #c3bfb6; }

/* Carrossel: cada slide é um cartão */
.slides { display: grid; gap: 1rem; }
.slide-card { border: 1px solid var(--paper-2); border-radius: var(--radius); padding: .8rem 1rem; }
.slide-card header { display: flex; align-items: center; gap: .5rem; margin-bottom: .4rem; }
.slide-card .n { font-size: 11px; letter-spacing: .08em; color: #8a8578; text-transform: uppercase; }
.slide-card .rm { margin-left: auto; background: none; border: 0; color: var(--mark); cursor: pointer; }
.slide-body { font: 400 1rem/1.6 var(--serif); outline: none; min-height: 3rem; }
.slide-body:empty::before { content: attr(data-ph); color: #c3bfb6; }

.statusbar {
  display: flex; align-items: center; gap: .25rem; padding: .45rem 1rem;
  background: var(--slate); border-top: 1px solid var(--line); font-size: 12px; color: #c8cdd5;
}

/* ---------- modal e toast ---------- */
.modal { position: fixed; inset: 0; background: rgba(10,11,13,.7); display: grid; place-items: center; padding: 1.5rem; z-index: 50; }
.modal-card {
  background: var(--slate); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; width: 100%; max-width: 30rem; max-height: 85vh; overflow-y: auto;
}
.modal-card h3 { font: 600 1.2rem var(--serif); margin: 0 0 1.1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: .5rem; margin-top: 1.25rem; }
.toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translate(-50%, 4rem);
  background: var(--paper); color: var(--ink); padding: .5rem 1rem; border-radius: var(--radius);
  font-size: 13px; opacity: 0; transition: transform .2s, opacity .2s; pointer-events: none; z-index: 60;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* progresso */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-bottom: 1.25rem; }
.stat { border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem .8rem; }
.stat b { display: block; font: 600 1.5rem var(--serif); }
.stat span { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.bar { height: 6px; background: var(--slate-3); border-radius: 3px; overflow: hidden; margin-top: .4rem; }
.bar i { display: block; height: 100%; background: var(--mark); }
.bar.is-met i { background: var(--ok); }
.spark { display: flex; align-items: flex-end; gap: 2px; height: 3rem; margin-top: .5rem; }
.spark i { flex: 1; background: var(--slate-3); min-height: 1px; border-radius: 1px; }
.spark i.on { background: var(--mark); }

.syn-group { border-top: 1px solid var(--line); padding-top: .6rem; margin-top: .6rem; }
.syn-group:first-child { border: 0; margin: 0; padding: 0; }
.syn-pos { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: .4rem; }
.syn-words { display: flex; flex-wrap: wrap; gap: .35rem; }
.syn-word {
  border: 1px solid var(--line); background: none; color: #e7eaee; cursor: pointer;
  border-radius: 999px; padding: .2rem .65rem; font-size: 13px;
}
.syn-word:hover { background: var(--mark); border-color: var(--mark); color: #fff; }

@media (max-width: 820px) {
  .tree-pane { position: absolute; z-index: 5; height: calc(100% - 3rem); }
  .page { padding: 2rem 1.5rem; }
  .page-rig { padding: 1.5rem .75rem 4rem; }
  .ruler { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}