/* daymark — technical monochrome. Mono type, small uppercase tracked labels,
   aligned columns, 1px rules, square corners. No ornament. */

:root {
  --bg: #0a0a0a;
  --bg-sunken: #000000;
  --bg-raised: #131313;
  --bg-hover: #181818;
  --line: #242424;
  --line-soft: #171717;
  --fg: #e6e6e6;
  --fg-dim: #8f8f8f;
  --fg-faint: #545454;
  --accent: #ffffff;
  --danger: #a8524c;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --measure: 72ch;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; }
::selection { background: #2e2e2e; color: #fff; }

/* label: the one typographic device used everywhere */
.label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}

/* ---------- login ---------- */
.login-body { display: grid; place-items: center; min-height: 100dvh; background: var(--bg-sunken); }
.login-card { width: min(92vw, 300px); }
.login-card h1 {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg);
  margin: 0 0 4px;
}
.tagline { margin: 0 0 28px; }
#login-form { display: flex; flex-direction: column; gap: 8px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.login-card input,
.login-card button {
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--fg);
  letter-spacing: 0.06em;
}
.login-card input:focus { outline: none; border-color: var(--fg-dim); }
.login-card button {
  margin-top: 8px;
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.login-card button:hover { opacity: 0.86; }
.error { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--danger); margin: 8px 0 0; }

/* ---------- app shell ---------- */
.app { display: grid; grid-template-columns: 264px 1fr; height: 100dvh; }

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--bg-sunken);
  border-right: 1px solid var(--line-soft);
}
.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 14px;
  border-bottom: 1px solid var(--line-soft);
}
.brand-name { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg); }
.brand-count { font-variant-numeric: tabular-nums; }

.new-btn {
  margin: 12px 12px 4px;
  padding: 9px 12px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--fg-dim);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: border-color 0.12s ease, color 0.12s ease;
}
.new-btn:hover { border-color: var(--fg-dim); color: var(--fg); }

.note-list { flex: 1; min-height: 0; overflow-y: auto; padding: 4px 12px 12px; }
.month-label { padding: 16px 4px 6px; }
.day-label { padding: 8px 4px 2px; font-size: 11px; color: var(--fg-dim); font-variant-numeric: tabular-nums; }
.note-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  column-gap: 10px;
  row-gap: 2px;
  width: 100%;
  text-align: left;
  border: none;
  border-left: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--fg-dim);
  padding: 6px 8px 6px 4px;
  line-height: 1.35;
}
.note-item:hover { background: var(--bg-hover); color: var(--fg); }
.note-item.active { background: var(--bg-raised); color: var(--fg); border-left-color: var(--accent); }
.ni-time { font-size: 11px; color: var(--fg-faint); font-variant-numeric: tabular-nums; }
.ni-title { font-size: 12px; color: var(--fg); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ni-preview { grid-column: 2; font-size: 11px; color: var(--fg-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.empty-hint { padding: 16px 4px; line-height: 1.6; }

.sidebar-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 12px 16px; border-top: 1px solid var(--line-soft);
}
.link-btn { border: none; background: none; padding: 0; color: var(--fg-faint); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; }
.link-btn:hover { color: var(--fg); }

/* ---------- main ---------- */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 24px;
  height: 48px;
  border-bottom: 1px solid var(--line-soft);
}
.note-date { font-size: 12px; color: var(--fg); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.tools { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.status { min-width: 96px; text-align: right; transition: color 0.2s ease; }
.status.saved { color: var(--fg-dim); }
.status.committed { color: var(--accent); }
.status.offline { color: var(--danger); }
.wordcount { font-variant-numeric: tabular-nums; }
.tool-btn {
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--fg-dim);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 12px;
  transition: border-color 0.12s ease, color 0.12s ease;
}
.tool-btn:hover { border-color: var(--fg-dim); color: var(--fg); }
.tool-btn.on { border-color: var(--accent); color: var(--accent); }
.tool-btn.danger:hover { border-color: var(--danger); color: var(--danger); }
.tool-btn.danger.armed { border-color: var(--danger); background: var(--danger); color: #fff; }

.surface { flex: 1; min-height: 0; overflow-y: auto; display: flex; justify-content: center; }
.editor {
  width: 100%;
  max-width: var(--measure);
  border: none;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.8;
  padding: 40px 24px 45vh;
  caret-color: var(--accent);
  tab-size: 4;
}
.editor::placeholder { color: var(--fg-faint); }

.preview {
  width: 100%;
  max-width: var(--measure);
  padding: 40px 24px 45vh;
  font-size: 14px;
  line-height: 1.8;
  color: var(--fg);
}

/* ---------- rendered markdown ---------- */
.markdown h1, .markdown h2, .markdown h3 { font-weight: 500; line-height: 1.3; margin: 1.6em 0 0.6em; }
.markdown h1 { font-size: 1.15em; letter-spacing: 0.08em; text-transform: uppercase; }
.markdown h2 { font-size: 1em; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-dim); }
.markdown h3 { font-size: 1em; color: var(--fg-dim); }
.markdown p { margin: 0 0 1em; }
.markdown a { color: var(--fg); text-decoration-color: var(--fg-faint); text-underline-offset: 3px; }
.markdown blockquote { margin: 1em 0; padding: 0 0 0 1em; border-left: 1px solid var(--line); color: var(--fg-dim); }
.markdown code { font-size: 0.95em; background: var(--bg-raised); padding: 0.1em 0.35em; }
.markdown pre { background: var(--bg-sunken); border: 1px solid var(--line-soft); padding: 12px 14px; overflow-x: auto; }
.markdown pre code { background: none; padding: 0; }
.markdown ul, .markdown ol { padding-left: 1.4em; margin: 0 0 1em; }
.markdown li { margin: 0.2em 0; }
.markdown hr { border: none; border-top: 1px solid var(--line); margin: 2em 0; }
.markdown img { max-width: 100%; }

/* ---------- mobile ---------- */
@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: 82vw; max-width: 300px; z-index: 20; transform: translateX(-100%); transition: transform 0.18s ease; }
  .app.nav-open .sidebar { transform: translateX(0); }
  .topbar { padding: 0 16px; }
  .editor, .preview { padding: 24px 16px 45vh; }
}