/* REWRAP — tema e layout */

:root {
  --bg: #0b0e14;
  --surface: #11151e;
  --surface-2: #171c27;
  --surface-3: #1e2431;
  --border: #232a38;
  --border-soft: #1a202b;
  --text: #e7eaf1;
  --muted: #8b93a7;
  --accent: #7c6cff;
  --accent-hover: #8f81ff;
  --accent-2: #2dd4bf;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --shadow: 0 12px 40px rgba(0, 0, 0, .45);
  --radius: 10px;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #f1f3f8;
  --surface-3: #e8ebf3;
  --border: #dfe3ed;
  --border-soft: #eceff5;
  --text: #131722;
  --muted: #5d6679;
  --accent: #5b4bec;
  --accent-hover: #4c3ce0;
  --accent-2: #0d9488;
  --shadow: 0 12px 32px rgba(20, 26, 48, .12);
  color-scheme: light;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* -------------------------------------------------------------- barra única -- */
/*
 * Cabeçalho e ferramentas moram na mesma linha: em uma tela de código, cada
 * pixel vertical cedido ao cromo é uma linha de código a menos. Em telas
 * estreitas a barra quebra em duas linhas, em vez de comprimir os controles.
 */

.topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  row-gap: 6px;
  flex-wrap: wrap;
  min-height: 40px;
  padding: 4px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: 2px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  letter-spacing: 0;
}

.brand-tag {
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .04em;
  padding-left: 5px;
  margin-left: 1px;
  border-left: 1px solid var(--border);
}

.divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

.modes {
  display: flex;
  gap: 2px;
  padding: 2px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 7px;
}

.modes button {
  padding: 4px 11px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, color .15s;
}

.modes button:hover { color: var(--text); }

.modes button[aria-selected="true"] {
  background: var(--surface-3);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}

.spacer { flex: 1 1 auto; }

/* ------------------------------------------------------- controles da barra -- */

select, input[type="text"] {
  padding: 4px 7px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  font-size: 12.5px;
  outline: none;
}

.topbar select { max-width: 150px; }

select:focus-visible, input:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
}

.btn:hover { background: var(--surface-3); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-accent {
  background: transparent;
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--accent);
}
.btn-accent:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }

.btn-icon {
  padding: 5px;
  line-height: 0;
}

/* Fora da barra (modal de compartilhamento) os controles respiram como antes. */
.modal-foot .btn, .share-link .btn { padding: 7px 13px; font-size: 13px; }
.modal-body select, .modal-body input[type="text"] { padding: 6px 9px; font-size: 13px; }

.field {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}

.badge[data-tone="ok"]   { color: var(--ok);   border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.badge[data-tone="warn"] { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* Controle de preview: só aparece quando a linguagem é Markdown. */
.segmented {
  display: flex;
  gap: 2px;
  padding: 2px;
  flex: 0 0 auto;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.segmented button {
  padding: 3px 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, color .15s;
}

.segmented button:hover { color: var(--text); }

.segmented button[aria-pressed="true"] {
  background: var(--surface-3);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}

/* ---------------------------------------------------------------- editor -- */

main {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.viewer-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 16px;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--accent) 16%, var(--surface)),
    var(--surface));
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.viewer-bar strong { font-weight: 600; }
.viewer-bar .meta { color: var(--muted); font-size: 12px; }

.pane-labels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

.pane-labels span { padding: 4px 14px; }
.pane-labels span + span { border-left: 1px solid var(--border); }

.workspace {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
}

#editor {
  flex: 1 1 50%;
  min-width: 0;
  min-height: 0;
}

.workspace[data-preview="off"] #preview { display: none; }
.workspace[data-preview="full"] #editor { display: none; }

/* --------------------------------------------------------- markdown view -- */

.markdown-preview {
  position: relative;      /* referência de offsetTop na rolagem sincronizada */
  flex: 1 1 50%;
  min-width: 0;
  overflow: auto;
  padding: 26px 34px 60px;
  background: var(--bg);
  border-left: 1px solid var(--border);
  font-size: 14.5px;
  line-height: 1.65;
  outline: none;
  scroll-behavior: auto;
  overflow-wrap: break-word;
}

.workspace[data-preview="full"] .markdown-preview {
  border-left: 0;
  padding: 30px max(34px, calc((100% - 900px) / 2)) 80px;
}

.markdown-preview > *:first-child { margin-top: 0; }

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
  margin: 1.6em 0 .6em;
  font-weight: 600;
  line-height: 1.3;
  scroll-margin-top: 12px;
}

.markdown-preview h1 { font-size: 1.85em; padding-bottom: .28em; border-bottom: 1px solid var(--border); }
.markdown-preview h2 { font-size: 1.42em; padding-bottom: .26em; border-bottom: 1px solid var(--border-soft); }
.markdown-preview h3 { font-size: 1.2em; }
.markdown-preview h4 { font-size: 1.05em; }
.markdown-preview h5 { font-size: .95em; }
.markdown-preview h6 { font-size: .9em; color: var(--muted); }

.markdown-preview .anchor {
  margin-left: 8px;
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
  font-weight: 400;
}

.markdown-preview h1:hover .anchor,
.markdown-preview h2:hover .anchor,
.markdown-preview h3:hover .anchor,
.markdown-preview h4:hover .anchor,
.markdown-preview h5:hover .anchor,
.markdown-preview h6:hover .anchor { opacity: .55; }

.markdown-preview p,
.markdown-preview ul,
.markdown-preview ol,
.markdown-preview blockquote,
.markdown-preview table,
.markdown-preview pre { margin: 0 0 1em; }

.markdown-preview a { color: var(--accent); text-decoration: none; }
.markdown-preview a:hover { text-decoration: underline; }

.markdown-preview ul, .markdown-preview ol { padding-left: 1.6em; }
.markdown-preview li { margin: .25em 0; }
.markdown-preview li > ul, .markdown-preview li > ol { margin: .25em 0; }
.markdown-preview li input[type="checkbox"] { margin-right: .45em; accent-color: var(--accent); }
.markdown-preview li:has(> input[type="checkbox"]) { list-style: none; margin-left: -1.35em; }

.markdown-preview blockquote {
  padding: .2em 0 .2em 1em;
  border-left: 3px solid color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--muted);
}

.markdown-preview blockquote > *:last-child { margin-bottom: 0; }

.markdown-preview code {
  padding: .16em .38em;
  border-radius: 5px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: .87em;
}

.markdown-preview pre.code-block {
  padding: 13px 15px;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  line-height: 1.55;
}

.markdown-preview pre.code-block code {
  padding: 0;
  border: 0;
  background: none;
  font-size: 12.8px;
  white-space: pre;
}

.markdown-preview table {
  width: 100%;
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: .95em;
}

.markdown-preview th, .markdown-preview td {
  padding: 7px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

.markdown-preview th { background: var(--surface-2); font-weight: 600; }
.markdown-preview tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface-2) 45%, transparent); }

.markdown-preview hr {
  height: 1px;
  margin: 1.8em 0;
  border: 0;
  background: var(--border);
}

.markdown-preview img { max-width: 100%; border-radius: 8px; }
.markdown-preview kbd {
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-2);
  font: 11.5px var(--font-mono);
}

.markdown-preview .preview-empty {
  color: var(--muted);
  font-size: 13px;
  font-style: italic;
}

.empty-hint {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: center;
  padding-bottom: 24px;
  pointer-events: none;
  color: var(--muted);
  font-size: 12.5px;
  opacity: .75;
}

.empty-hint kbd {
  padding: 1px 6px;
  margin: 0 3px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-2);
  font: 11px var(--font-mono);
}

/* ------------------------------------------------------------- statusbar -- */

.statusbar {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 24px;
  padding: 0 12px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
  flex: 0 0 auto;
  overflow: hidden;
  white-space: nowrap;
}

.statusbar .sep { opacity: .35; }
.statusbar .msg { color: var(--text); }
.statusbar .msg[data-tone="err"] { color: var(--err); }
.statusbar .msg[data-tone="ok"]  { color: var(--ok); }

/* ----------------------------------------------------------------- modal -- */

dialog {
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  max-width: 520px;
  width: calc(100% - 32px);
}

dialog::backdrop { background: rgba(3, 5, 10, .6); backdrop-filter: blur(2px); }

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border-soft);
}

.modal-head h2 { margin: 0; font-size: 15px; font-weight: 600; }
.modal-body { padding: 16px 18px; display: grid; gap: 14px; }
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 18px 16px;
}

.share-link {
  display: flex;
  gap: 8px;
}

.share-link input {
  flex: 1 1 auto;
  font-family: var(--font-mono);
  font-size: 12px;
}

.options { display: grid; gap: 10px; }

.check {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13px;
  cursor: pointer;
}

.check input { margin-top: 3px; accent-color: var(--accent); }
.check .hint { display: block; color: var(--muted); font-size: 11.5px; }

.notice {
  display: flex;
  gap: 9px;
  padding: 10px 12px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-2) 30%, transparent);
  color: var(--muted);
  font-size: 12px;
}

.notice strong { color: var(--text); font-weight: 600; }

/* ---------------------------------------------------------------- toasts -- */

#toasts {
  position: fixed;
  right: 16px;
  bottom: 44px;
  display: grid;
  gap: 8px;
  z-index: 50;
}

.toast {
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 13px;
  animation: rise .18s ease-out;
}

.toast[data-tone="err"] { border-color: color-mix(in srgb, var(--err) 50%, transparent); }
.toast[data-tone="ok"]  { border-color: color-mix(in srgb, var(--ok) 50%, transparent); }

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* ------------------------------------------------------------ drop layer -- */

.drop-layer {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border: 2px dashed var(--accent);
  font-size: 15px;
  font-weight: 500;
}

[hidden] { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ------------------------------------------------------------- responsivo - */

@media (max-width: 1200px) {
  .brand-tag { display: none; }
}

@media (max-width: 860px) {
  .workspace[data-preview="split"] { flex-direction: column; }
  .workspace[data-preview="split"] .markdown-preview {
    border-left: 0;
    border-top: 1px solid var(--border);
    padding: 16px 18px 40px;
  }
  /* Em tela estreita a barra quebra em duas linhas; some só o que é enfeite. */
  .divider { display: none; }
  .topbar { gap: 6px; padding: 4px 8px; }
  .statusbar { gap: 10px; }
}