/* Vellum — Phase 1 stylesheet. Tokens from DESIGN.md. Light default, .dark toggle. */
:root{
  color-scheme:light;
  --canvas:#fff;--canvas-soft:#fafafa;--canvas-soft-2:#f5f5f5;
  --ink:#171717;--body:#4d4d4d;--mute:#888;
  --hairline:#ebebeb;--hairline-strong:#a1a1a1;
  --primary:#171717;--on-primary:#fff;--link:#0070f3;--active:#f0f0f0;
  --sans:"Geist","Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
.dark{
  color-scheme:dark;
  --canvas:#0a0a0a;--canvas-soft:#111;--canvas-soft-2:#1a1a1a;
  --ink:#ededed;--body:#a1a1a1;--mute:#7a7a7a;
  --hairline:#262626;--hairline-strong:#404040;
  --primary:#ededed;--on-primary:#0a0a0a;--link:#3b9eff;--active:#1f1f1f;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html,body{height:100%}
body{font-family:var(--sans);background:var(--canvas);color:var(--ink);-webkit-font-smoothing:antialiased;
     transition:background-color .3s,color .3s}
button{font-family:inherit;cursor:pointer}
a{color:var(--link);text-decoration:none}
svg{display:block}

/* ---------- shared bits ---------- */
.brand{display:flex;align-items:center;gap:9px}
.brand-mark{width:28px;height:28px;border-radius:7px;background:var(--primary);color:var(--on-primary);
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:500;font-size:15px;flex:none}
.brand-name{font-size:15px;font-weight:500;letter-spacing:-.3px}
.icon-btn{height:34px;width:34px;border:0;background:none;color:var(--body);border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;flex:none}
.icon-btn:hover{background:var(--active);color:var(--ink)}
.icon-btn svg{width:18px;height:18px}

/* ---------- login ---------- */
.login-body{display:flex;align-items:center;justify-content:center;padding:24px 16px;position:relative;overflow:hidden;min-height:100vh}
.mesh{position:fixed;inset:0;z-index:0;background:var(--canvas);overflow:hidden}
.blob{position:absolute;width:62vmax;height:62vmax;border-radius:50%;filter:blur(72px);opacity:.55;will-change:transform}
.b1{background:radial-gradient(circle at 50% 50%,#007cf0,#00dfd8 68%,transparent 72%);top:-18vmax;left:-12vmax}
.b2{background:radial-gradient(circle at 50% 50%,#7928ca,#ff0080 68%,transparent 72%);bottom:-22vmax;right:-12vmax}
.b3{background:radial-gradient(circle at 50% 50%,#ff4d4d,#f9cb28 68%,transparent 72%);top:32vmax;right:24vmax;opacity:.4}
@media (prefers-reduced-motion:no-preference){
  .b1{animation:d1 26s ease-in-out infinite alternate}.b2{animation:d2 30s ease-in-out infinite alternate}.b3{animation:d3 34s ease-in-out infinite alternate}
}
@keyframes d1{to{transform:translate(8vmax,6vmax) scale(1.12)}}
@keyframes d2{to{transform:translate(-7vmax,-5vmax) scale(1.1)}}
@keyframes d3{to{transform:translate(-6vmax,8vmax) scale(1.08)}}
.auth-card{position:relative;z-index:1;width:100%;max-width:400px;background:var(--canvas);border-radius:16px;padding:28px 24px 24px;
  box-shadow:0 1px 2px rgba(23,23,23,.04),0 10px 24px rgba(23,23,23,.08),0 30px 60px rgba(23,23,23,.1),inset 0 0 0 1px var(--hairline)}
.auth-card .brand{margin-bottom:24px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin-bottom:10px}
.auth-card h1{font-size:32px;line-height:36px;font-weight:600;letter-spacing:-1.28px;margin-bottom:8px}
.lede{font-size:15px;line-height:22px;color:var(--body);margin-bottom:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:7px}
.field input{width:100%;height:48px;background:var(--canvas);color:var(--ink);border:1px solid var(--hairline);border-radius:8px;
  padding:0 14px;font-family:var(--sans);font-size:16px}
.field input:focus{outline:none;border-color:var(--link);box-shadow:0 0 0 3px color-mix(in srgb,var(--link) 22%,transparent)}
.btn-primary{width:100%;height:48px;border:0;border-radius:9999px;background:var(--primary);color:var(--on-primary);
  font-size:16px;font-weight:500;margin-top:4px}
.btn-primary:hover{opacity:.92}
.form-error{background:#fdecec;color:#8a0000;border-radius:9px;padding:10px 12px;font-size:14px;margin-bottom:16px}
.dark .form-error{background:#2a1414;color:#ff9d9d}
.auth-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--hairline);font-family:var(--mono);font-size:11px;color:var(--mute)}

/* ---------- app shell ---------- */
.app{display:flex;height:100dvh;overflow:hidden}
.sidebar{width:264px;flex:none;background:var(--canvas-soft);border-right:1px solid var(--hairline);
  display:flex;flex-direction:column;padding:14px 12px;transition:transform .25s,background-color .3s}
.s-top{padding:6px 8px 14px}
.btn-new{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:40px;border:0;border-radius:9999px;
  background:var(--primary);color:var(--on-primary);font-size:14px;font-weight:500;margin-bottom:14px}
.btn-new:hover{opacity:.92}
.btn-new svg{width:15px;height:15px}
.nav{overflow-y:auto;flex:1}
.nav-item{display:flex;align-items:center;gap:10px;width:100%;padding:7px 8px;border:0;background:none;color:var(--body);
  font-size:14px;border-radius:7px;text-align:left;position:relative}
.nav-item:hover{background:var(--active);color:var(--ink)}
.nav-item.active{background:var(--active);color:var(--ink);font-weight:500}
.nav-item.active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--primary)}
.nav-item svg{width:15px;height:15px;flex:none;opacity:.8}
.nav-item.child{padding-left:12px}
.nav-group{margin-top:16px}
.nav-label{display:flex;align-items:center;justify-content:space-between;padding:0 8px 6px}
.group-toggle{display:flex;align-items:center;gap:6px;border:0;background:none;color:var(--mute);
  font-family:var(--mono);font-size:11px;letter-spacing:.07em;text-transform:uppercase;padding:2px 0;cursor:pointer}
.group-toggle:hover{color:var(--body)}
.chev{width:12px;height:12px;flex:none;transition:transform .15s}
.nav-group.collapsed .group-list{display:none}
.nav-group.collapsed .chev{transform:rotate(-90deg)}
.nav-empty{padding:4px 8px 6px;font-size:12px;color:var(--mute)}
.add-nb{border:0;background:none;color:var(--mute);font-size:18px;line-height:1;cursor:pointer;padding:0 4px}
.add-nb:hover{color:var(--ink)}
.s-foot{display:flex;align-items:center;justify-content:space-between;padding:12px 8px 4px;border-top:1px solid var(--hairline);margin-top:8px}
.who{font-size:13px;color:var(--body);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.signout{font-size:13px}

.main{flex:1;display:flex;min-width:0}
.notelist{width:360px;flex:none;border-right:1px solid var(--hairline);display:flex;flex-direction:column;min-width:0;background:var(--canvas)}
.list-head{padding:12px 14px;border-bottom:1px solid var(--hairline)}
.list-title-row{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.search{position:relative;display:flex;align-items:center}
.search>svg{position:absolute;left:11px;width:16px;height:16px;color:var(--mute)}
.search input{width:100%;height:38px;border:1px solid var(--hairline);border-radius:9px;background:var(--canvas-soft-2);
  color:var(--ink);padding:0 32px 0 34px;font-family:var(--sans);font-size:14px}
.search input:focus{outline:none;border-color:var(--link);box-shadow:0 0 0 3px color-mix(in srgb,var(--link) 20%,transparent)}
.search-clear{position:absolute;right:6px;height:26px;width:26px;border:0;background:none;color:var(--mute);font-size:20px;line-height:1;border-radius:6px}
.search-clear:hover{background:var(--active);color:var(--ink)}
.note-card p mark{background:color-mix(in srgb,#f5a623 40%,transparent);color:inherit;border-radius:2px;padding:0 1px}
.dark .note-card p mark{background:color-mix(in srgb,#f5a623 30%,transparent)}
.icon-btn.danger:hover{background:color-mix(in srgb,#ee0000 14%,transparent);color:#ee0000}
.dark .icon-btn.danger:hover{color:#ff6166}
.s-links{font-size:13px;color:var(--mute)}
.s-links a{color:var(--body)}
.s-links a:hover{color:var(--ink)}
.list-title{font-size:17px;font-weight:600;letter-spacing:-.4px}
.list-count{font-family:var(--mono);font-size:12px;color:var(--mute);margin-left:auto}
.menu-btn{display:none}
.list-scroll{overflow-y:auto;flex:1;padding:6px}
.note-card{display:block;width:100%;text-align:left;border:0;background:none;padding:12px;border-radius:10px;color:inherit}
.note-card+.note-card{margin-top:2px}
.note-card:hover{background:var(--active)}
.note-card.active{background:var(--active);box-shadow:inset 0 0 0 1px var(--hairline)}
.note-card h3{font-size:14px;font-weight:600;letter-spacing:-.2px;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.note-card p{font-size:13px;line-height:19px;color:var(--body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.note-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--mute)}
.note-meta .nb{font-family:var(--mono)}
.note-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--hairline-strong)}
.list-empty{padding:30px 16px;text-align:center;color:var(--mute);font-size:14px}

.reader{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--canvas)}
.reader-head{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--hairline)}
.breadcrumb{font-family:var(--mono);font-size:12px;color:var(--mute);flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reader-back{display:none}
.reader-actions{display:flex;align-items:center;gap:4px}
.editor-toolbar{display:flex;align-items:center;gap:2px;padding:6px 16px;border-bottom:1px solid var(--hairline);flex-wrap:wrap}
.tb{height:32px;min-width:32px;padding:0 8px;border:0;background:none;color:var(--body);border-radius:7px;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.tb:hover{background:var(--active);color:var(--ink)}
.tb.b{font-weight:700}.tb.i{font-style:italic;font-family:Georgia,serif}
.tb svg{width:16px;height:16px}
.reader-scroll{overflow-y:auto;flex:1}
.doc{max-width:720px;margin:0 auto;padding:36px 32px 80px}
.doc .title-input{width:100%;border:0;background:none;color:var(--ink);font-family:var(--sans);font-size:32px;font-weight:600;
  letter-spacing:-1.2px;line-height:38px;outline:none;margin-bottom:12px;resize:none;overflow:hidden}
.doc h1.title{font-size:32px;line-height:38px;font-weight:600;letter-spacing:-1.2px;margin-bottom:12px;word-break:break-word}
.doc-meta{font-family:var(--mono);font-size:12px;color:var(--mute);padding-bottom:20px;border-bottom:1px solid var(--hairline);margin-bottom:22px}
.doc-body{color:var(--body);font-size:16px;line-height:26px;outline:none}
.doc-body:focus{outline:none}
.doc-body h1,.doc-body h2,.doc-body h3{color:var(--ink);font-weight:600;letter-spacing:-.5px;margin:24px 0 10px}
.doc-body h2{font-size:20px}.doc-body h3{font-size:17px}
.doc-body p{margin-bottom:14px}
.doc-body ul,.doc-body ol{margin:0 0 14px 22px}
.doc-body li{margin-bottom:6px}
.doc-body a{text-decoration:underline}
.doc-body img{max-width:100%;border-radius:8px}
.doc-body table{width:100%;border-collapse:collapse;margin:6px 0 18px;font-size:14px}
.doc-body th,.doc-body td{text-align:left;padding:9px 12px;border:1px solid var(--hairline)}
.doc-body blockquote{border-left:3px solid var(--hairline-strong);padding-left:14px;color:var(--mute);margin-bottom:14px}
.doc-body pre{background:var(--canvas-soft-2);border-radius:8px;padding:12px;overflow-x:auto;font-family:var(--mono);font-size:13px;margin-bottom:14px}
.empty-state .empty{color:var(--mute);font-size:15px;padding-top:20px}

/* ---------- theme toggle ---------- */
.theme-toggle{position:fixed;bottom:16px;left:16px;z-index:50;height:38px;width:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9999px;background:var(--canvas);color:var(--ink);box-shadow:inset 0 0 0 1px var(--hairline),0 4px 14px rgba(0,0,0,.14)}
.theme-toggle svg{width:17px;height:17px}
.theme-toggle .moon{display:none}
.dark .theme-toggle .sun{display:none}
.dark .theme-toggle .moon{display:block}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);z-index:90;display:flex;align-items:center;gap:14px;
  padding:11px 14px;background:var(--ink);color:var(--canvas);border-radius:10px;font-size:14px;box-shadow:0 12px 32px rgba(0,0,0,.28);
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.toast button{border:0;background:none;color:var(--canvas);font-size:14px;font-weight:600;text-decoration:underline}

.scrim{position:fixed;inset:0;background:rgba(0,0,0,.45);opacity:0;pointer-events:none;transition:opacity .25s;z-index:30}
.app.drawer-open .scrim{opacity:1;pointer-events:auto}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .sidebar{position:fixed;top:0;bottom:0;left:0;z-index:40;transform:translateX(-100%);box-shadow:0 12px 40px rgba(0,0,0,.25)}
  .app.drawer-open .sidebar{transform:none}
  .menu-btn{display:inline-flex}
}
@media (min-width:1024px){.scrim{display:none}}
@media (min-width:640px) and (max-width:1023px){.notelist{width:340px}}
@media (max-width:639px){
  .notelist{width:100%;border-right:0}
  .reader{display:none}
  .app.reading .notelist{display:none}
  .app.reading .reader{display:flex}
  .reader-back{display:inline-flex}
  .doc{padding:26px 20px 80px}
  .theme-toggle{bottom:auto;top:12px;right:12px;left:auto}
}

/* ---------- security / 2FA pages ---------- */
.auth-card.wide{max-width:460px}
.auth-card h1{font-size:28px}
.ok-note{background:#e8f8f3;color:#0d6b56;border-radius:9px;padding:10px 12px;font-size:14px;margin-bottom:16px}
.dark .ok-note{background:#0f2a22;color:#7fe6c4}
.btn-ghost{width:100%;height:46px;border:1px solid var(--hairline-strong);border-radius:9999px;background:none;
  color:var(--ink);font-size:15px;font-weight:500}
.btn-ghost:hover{border-color:var(--ink)}
.btn-primary.block{display:block;text-align:center;line-height:48px;text-decoration:none}
.kv{display:flex;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid var(--hairline)}
.kv .k{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--mute);width:70px;flex:none}
.kv .v{font-size:15px;color:var(--ink)}
.kv .v.mono{font-family:var(--mono);letter-spacing:.04em;word-break:break-all}
.uri{margin:14px 0}
.uri summary{font-size:13px;color:var(--link);cursor:pointer}
.uri code{display:block;margin-top:8px;font-family:var(--mono);font-size:12px;color:var(--body);word-break:break-all;
  background:var(--canvas-soft-2);padding:10px;border-radius:8px}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0 22px}
.codes span{font-family:var(--mono);font-size:15px;letter-spacing:.05em;background:var(--canvas-soft-2);
  color:var(--ink);padding:9px 12px;border-radius:8px;text-align:center}

/* ---------- filters ---------- */
.search-row{display:flex;gap:6px;align-items:center}
.search-row .search{flex:1}
.filter-btn{height:38px;width:38px;flex:none;border:1px solid var(--hairline);border-radius:9px;background:none;
  color:var(--body);display:none;align-items:center;justify-content:center}
.filter-btn.revealed{display:inline-flex}
.filter-btn:hover{border-color:var(--hairline-strong);color:var(--ink)}
.filter-btn svg{width:17px;height:17px}
.filter-btn.active{background:var(--ink);color:var(--canvas);border-color:var(--ink)}
.filter-panel{margin-top:10px;display:flex;flex-direction:column;gap:10px;padding:12px;
  border:1px solid var(--hairline);border-radius:10px;background:var(--canvas-soft)}
.fl{display:flex;flex-direction:column;gap:5px}
.fl span{font-family:var(--mono);text-transform:uppercase;letter-spacing:.05em;font-size:11px;color:var(--mute)}
.fl select{height:36px;border:1px solid var(--hairline);border-radius:8px;background:var(--canvas);color:var(--ink);
  padding:0 10px;font-family:var(--sans);font-size:14px}
.fl select:focus{outline:none;border-color:var(--link);box-shadow:0 0 0 3px color-mix(in srgb,var(--link) 20%,transparent)}
.filter-clear{align-self:flex-start;border:0;background:none;color:var(--link);font-size:13px;padding:2px 0}

/* ---------- note props: notebook + tags ---------- */
.doc-props{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--hairline)}
.doc-props.edit{gap:10px}
.prop-nb{font-family:var(--mono);font-size:12px;color:var(--mute)}
.tag-chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:9999px;
  background:var(--canvas-soft-2);color:var(--body);font-size:13px;border:0;font-family:var(--sans)}
button.tag-chip{cursor:pointer}
button.tag-chip:hover{background:var(--active);color:var(--ink)}
.tag-chip.editable{padding-right:5px}
.chip-x{border:0;background:none;color:var(--mute);font-size:15px;line-height:1;cursor:pointer;padding:0 2px;border-radius:50%}
.chip-x:hover{color:var(--ink)}
.tag-host{display:inline-flex;flex-wrap:wrap;gap:6px;align-items:center}
.tag-add{height:26px;border:1px dashed var(--hairline-strong);border-radius:9999px;background:none;color:var(--ink);
  padding:0 12px;font-family:var(--sans);font-size:13px;width:110px}
.tag-add:focus{outline:none;border-style:solid;border-color:var(--link)}
.nb-select{height:30px;border:1px solid var(--hairline);border-radius:8px;background:var(--canvas-soft-2);color:var(--ink);
  padding:0 8px;font-family:var(--sans);font-size:13px}
.nb-select:focus{outline:none;border-color:var(--link)}

/* ---------- backup page ---------- */
.sep{border:0;border-top:1px solid var(--hairline);margin:24px 0}
.restore-form{margin-top:6px}
.file{width:100%;font-size:14px;color:var(--body);margin-bottom:14px}
.file::file-selector-button{height:38px;padding:0 14px;margin-right:10px;border:1px solid var(--hairline-strong);
  border-radius:9999px;background:var(--canvas);color:var(--ink);font-family:var(--sans);font-size:14px;cursor:pointer}
.radio{display:flex;gap:10px;align-items:flex-start;padding:10px 0;font-size:14px;line-height:20px;color:var(--body)}
.radio input{margin-top:3px;flex:none}
.radio strong{color:var(--ink)}

/* ---------- import page ---------- */
.file-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--hairline)}
.fr-name{flex:1;font-size:14px;color:var(--ink);word-break:break-all}
.fr-size{font-family:var(--mono);font-size:12px;color:var(--mute)}
.btn-ghost.sm{width:auto;height:34px;padding:0 16px;font-size:13px}