/* Personal Second Brain — browse-layer styling (shadcn/ui-inspired, dark zinc theme). */

:root {
  color-scheme: dark; /* native controls (selects, scrollbars, file picker) render dark */
  --bg: #09090b;
  --panel: #18181b;
  --fg: #fafafa;
  --muted: #a1a1aa;
  --muted-bg: #27272a;
  --border: #27272a;
  --input-bg: #0c0c0e;
  --primary: #fafafa;
  --primary-fg: #18181b;
  --primary-hover: #e4e4e7;
  --danger: #f87171;
  --ring: rgba(250, 250, 250, 0.18);
  --radius: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font: 14px/1.5 ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

a { color: var(--fg); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- header ---- */
.site-header {
  display: flex; align-items: center; gap: 1.5rem;
  padding: .75rem 1.5rem; background: var(--panel); border-bottom: 1px solid var(--border);
}
.site-header .brand { font-weight: 600; font-size: 1rem; }
.site-header nav { display: flex; gap: 1.25rem; align-items: center; }
.site-header nav a { color: var(--muted); font-weight: 500; }
.site-header nav a:hover { color: var(--fg); text-decoration: none; }
.linklike { background: none; border: none; color: var(--muted); cursor: pointer; font: inherit; font-weight: 500; padding: 0; }
.linklike:hover { color: var(--fg); text-decoration: underline; }

/* header search box */
.header-search { margin-left: auto; }
.header-search input {
  background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--fg); font: inherit; font-size: .85rem; padding: .35rem .7rem; width: 16rem; max-width: 38vw;
}
.header-search input::placeholder { color: var(--muted); }
.header-search input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--ring); }

.snippet { margin-top: .15rem; font-size: .85rem; line-height: 1.45; }

/* ---- layout ---- */
.container { max-width: 880px; margin: 1.75rem auto; padding: 0 1.5rem; }

h1 { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 .35rem; }
h2 { font-size: 1.05rem; font-weight: 600; margin: 1.5rem 0 .5rem; }
h3 { font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 1rem 0 .35rem; }

.muted { color: var(--muted); }

.flash { max-width: 880px; margin: 1rem auto -0.5rem; padding: .7rem 1rem; border-radius: var(--radius-sm); font-size: .875rem; border: 1px solid var(--border); }
.flash-notice { background: rgba(34, 197, 94, .12); color: #4ade80; border-color: rgba(34, 197, 94, .3); }
.flash-alert  { background: rgba(248, 113, 113, .12); color: #f87171; border-color: rgba(248, 113, 113, .3); }

.columns { display: flex; gap: 2rem; flex-wrap: wrap; }
.col { flex: 1 1 320px; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: .5rem; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; }

.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: .75rem; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--fg); }

/* ---- cards ---- */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: 0 1px 3px rgba(0, 0, 0, .5); margin: 1rem 0;
}
.card-title { margin: 0 0 .25rem; }
.card-desc { margin: 0 0 1.25rem; color: var(--muted); font-size: .9rem; }

/* form pages (new/edit) are centered, narrower cards */
.form-page { max-width: 640px; margin: 1.5rem auto; }
.auth-card { max-width: 400px; margin: 3rem auto; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  height: 2.25rem; padding: 0 .9rem; font-size: .875rem; font-weight: 500;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--panel); color: var(--fg); cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, box-shadow .15s;
}
.btn:hover { background: var(--muted-bg); text-decoration: none; }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--ring); }
.btn-primary { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); }

/* ---- form fields ---- */
.field { display: flex; flex-direction: column; gap: .5rem; margin: 0 0 1.25rem; }
.field > label, .field legend { font-size: .875rem; font-weight: 500; color: var(--fg); padding: 0; }

.field input, .field select, .field textarea,
.inline-form input, .inline-form select {
  width: 100%; font: inherit; font-size: .875rem; color: var(--fg);
  background: var(--input-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: .5rem .75rem; line-height: 1.25rem;
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 7rem; resize: vertical; }
.field input::placeholder, .inline-form input::placeholder { color: var(--muted); }
.field input:focus, .field select:focus, .field textarea:focus,
.inline-form input:focus, .inline-form select:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--ring);
}

fieldset.field { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem; gap: .75rem; }
.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .5rem; }
.checkbox { display: flex; align-items: center; gap: .5rem; font-weight: 400; font-size: .875rem; }
.checkbox input { width: auto; }

.inline-form { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-top: 1rem; }
.inline-form select, .inline-form input { width: auto; }

.errors { background: rgba(248, 113, 113, .1); color: #f87171; border: 1px solid rgba(248, 113, 113, .3); border-radius: var(--radius-sm); padding: .75rem 1rem; margin-bottom: 1.25rem; font-size: .875rem; }
.errors p { margin: .15rem 0; }

/* ---- lists ---- */
.folder-tree, .folder-list, .note-list, .file-list, .link-list { list-style: none; padding-left: 0; margin: .25rem 0; }
.folder-tree ul { list-style: none; padding-left: 1.1rem; border-left: 1px solid var(--border); margin: .15rem 0; }
.folder-tree li, .note-list li, .folder-list li, .file-list li, .link-list li { padding: .2rem 0; }
.note-list li::before { content: "📝 "; }
.folder-list li::before, .folder-tree li::before { content: "📁 "; }
.note-list a, .folder-list a, .folder-tree a { color: var(--fg); }

/* ---- chips ---- */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; }
.chip { display: inline-flex; align-items: center; gap: .35rem; background: var(--muted-bg); border: 1px solid var(--border); border-radius: 999px; padding: .15rem .35rem .15rem .7rem; font-size: .8rem; }
.chip a { color: var(--fg); }
.chip-x, .link-danger { background: none; border: none; color: var(--muted); cursor: pointer; font-size: .8rem; padding: 0 .2rem; }
.chip-x:hover, .link-danger:hover { color: var(--danger); text-decoration: underline; }

/* ---- autosave editor ---- */
.editor-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.save-status { font-size: .75rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }

.title-input {
  flex: 1; min-width: 0; font-size: 1.5rem; font-weight: 600; letter-spacing: -0.01em;
  color: var(--fg); background: transparent; border: none; padding: 0; margin: 0; font-family: inherit;
}
.title-input:focus { outline: none; }
.title-input::placeholder { color: var(--muted); }

.note-body {
  width: 100%; min-height: 48vh; resize: vertical; margin-top: .75rem;
  font: inherit; font-size: .95rem; line-height: 1.6; color: var(--fg);
  background: transparent; border: none; padding: 0;
}
.note-body:focus { outline: none; }
.note-body::placeholder { color: var(--muted); }

/* clickable folder chips (file/unfile) */
.chip.toggle { cursor: pointer; background: var(--muted-bg); color: var(--muted); font: inherit; font-size: .8rem; padding: .2rem .7rem; }
.chip.toggle:hover { color: var(--fg); }
.chip.toggle.is-on { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }

.managed-banner { font-size: .8rem; margin: 0 0 .75rem; }
.managed-banner code { background: var(--muted-bg); padding: .05rem .3rem; border-radius: 4px; }

.hints { font-size: .8rem; padding: .9rem 1.25rem; }
.hints p { margin: 0; }
.note-footer { margin: 1rem 0 2rem; }

.prose { font-size: .925rem; line-height: 1.6; }
.wikilink { color: var(--primary); text-decoration: none; border-bottom: 1px solid color-mix(in oklab, var(--primary) 40%, transparent); }
.wikilink:hover { border-bottom-color: var(--primary); }
.wikilink-unresolved { color: var(--muted); border-bottom: 1px dashed var(--muted); }

/* ---- attachment previews ---- */
.attachment-grid { list-style: none; padding: 0; margin: .25rem 0; display: flex; flex-wrap: wrap; gap: .9rem; }
.attachment { width: 150px; }
.attachment-thumb {
  display: block; width: 150px; height: 110px; overflow: hidden;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--input-bg);
}
.attachment-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; cursor: zoom-in; }
.file-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .3rem;
  color: var(--muted); text-decoration: none;
}
.file-tile:hover { color: var(--fg); text-decoration: none; }
.file-icon { font-size: 2rem; line-height: 1; }
.file-ext { font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; }
.attachment-meta { margin-top: .4rem; display: flex; flex-direction: column; gap: .1rem; font-size: .8rem; }
.attachment-meta .filename { word-break: break-word; }
.attachment-meta .link-danger { align-self: flex-start; }

.lightbox {
  position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center;
  padding: 2rem; background: rgba(0, 0, 0, .85); cursor: zoom-out;
}
.lightbox img { max-width: 95vw; max-height: 95vh; object-fit: contain; border-radius: 6px; }

/* ---- dropzone ---- */
.dropzone {
  border: 1.5px dashed var(--border); border-radius: var(--radius-sm); padding: 1.5rem; text-align: center;
  color: var(--muted); margin-top: .75rem; font-size: .875rem; transition: border-color .15s, background .15s;
}
.dropzone.is-dragover { border-color: var(--primary); background: var(--muted-bg); color: var(--fg); }
.dropzone input[type=file] { font-size: .85rem; }