:root{
  --bg:#0b0f19;
  --panel:#0f1629;
  --panel2:#0c1325;
  --card:#121b33;
  --text:#e8ecff;
  --muted:#a9b2d6;
  --muted2:#7f8ab3;
  --border:rgba(255,255,255,.10);
  --shadow: 0 22px 70px rgba(0,0,0,.45);
  --radius: 18px;
  --radius2: 14px;
  --focus: 0 0 0 3px rgba(122,162,247,.28);
  --accent: rgba(122,162,247,.52);
  --accent2: rgba(125,207,255,.25);
  --danger: rgba(255,90,120,.35);

  /* note colors */
  --c-slate: rgba(148,163,184,.28);
  --c-rose: rgba(244,63,94,.20);
  --c-amber: rgba(245,158,11,.20);
  --c-emerald: rgba(16,185,129,.18);
  --c-sky: rgba(56,189,248,.18);
  --c-violet: rgba(167,139,250,.20);
}

html[data-theme="light"]{
  --bg:#f6f7fb;
  --panel:#ffffff;
  --panel2:#f3f5fb;
  --card:#ffffff;
  --text:#111827;
  --muted:#4b5563;
  --muted2:#6b7280;
  --border:rgba(17,24,39,.10);
  --shadow: 0 18px 60px rgba(17,24,39,.10);
  --focus: 0 0 0 3px rgba(59,130,246,.20);
  --accent: rgba(59,130,246,.48);
  --accent2: rgba(56,189,248,.22);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: linear-gradient(180deg, var(--bg), color-mix(in oklab, var(--bg), black 12%));
  color:var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

.bg-orbs{
  position:fixed; inset:0;
  pointer-events:none;
  overflow:hidden;
  z-index:-1;
}
.orb{
  position:absolute;
  filter: blur(40px);
  opacity:.75;
  transform: translate3d(0,0,0);
}
.orb1{
  width:520px; height:520px;
  left:-140px; top:-180px;
  background: radial-gradient(circle at 30% 30%, rgba(122,162,247,.55), transparent 60%);
}
.orb2{
  width:520px; height:520px;
  right:-180px; top:-160px;
  background: radial-gradient(circle at 40% 30%, rgba(125,207,255,.45), transparent 60%);
}
.orb3{
  width:620px; height:620px;
  left:20%; bottom:-260px;
  background: radial-gradient(circle at 50% 50%, rgba(167,139,250,.35), transparent 62%);
}

button,input,textarea{font:inherit;color:inherit}
input,textarea{
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 14px;
  outline: none;
}
input:focus,textarea:focus{box-shadow:var(--focus); border-color: color-mix(in oklab, var(--accent), white 10%);}

.app{
  height:100%;
  display:flex;
  flex-direction:column;
  padding: max(10px, env(safe-area-inset-top)) 10px max(10px, env(safe-area-inset-bottom));
  gap:10px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 12px;
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel), white 4%), color-mix(in oklab, var(--panel), black 2%));
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.brand{display:flex; gap:10px; align-items:center; min-width: 200px;}
.logo{
  width:42px; height:42px;
  display:grid; place-items:center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border:1px solid var(--border);
  font-weight: 900;
}
.title{font-weight:900; letter-spacing:.2px}
.subtitle{font-size:12px; color:var(--muted2); margin-top:2px}

.top-actions{
  display:flex; gap:8px; align-items:center;
  flex-wrap:wrap; justify-content:flex-end;
}

.btn{
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 25%);
  padding:10px 12px;
  border-radius: 14px;
  cursor:pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
  user-select:none;
}
.btn:hover{background: color-mix(in oklab, var(--panel2), white 5%); border-color: color-mix(in oklab, var(--border), white 15%);}
.btn:active{transform: translateY(1px);}
.btn:disabled{opacity:.5; cursor:not-allowed}
.btn.small{padding:8px 10px; border-radius: 12px;}
.btn.primary{
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: color-mix(in oklab, var(--accent), white 5%);
}
.btn.ghost{background: color-mix(in oklab, var(--panel2), transparent 45%);}
.btn.danger{border-color: var(--danger); background: rgba(255,90,120,.08);}

.fileBtn{position:relative; overflow:hidden}
.fileBtn input{position:absolute; inset:0; opacity:0; cursor:pointer}

.iconBtn{
  width:42px; height:42px;
  border-radius: 14px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 40%);
  cursor:pointer;
  display:grid; place-items:center;
}
.iconBtn:hover{background: color-mix(in oklab, var(--panel2), white 5%);}

.seg{
  display:flex;
  border:1px solid var(--border);
  border-radius: 14px;
  overflow:hidden;
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}
.segBtn{
  border:0;
  background: transparent;
  padding:10px 12px;
  cursor:pointer;
  color: var(--muted);
}
.segBtn.active{
  background: color-mix(in oklab, var(--panel2), white 6%);
  color: var(--text);
}

.main{
  flex:1;
  display:grid;
  grid-template-columns: 360px 1fr;
  gap:10px;
  min-height:0;
}

.sidebar, .editor{
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel), white 2%), color-mix(in oklab, var(--panel2), transparent 10%));
  box-shadow: var(--shadow);
  min-height:0;
  overflow:hidden;
}

.sidebar{display:flex; flex-direction:column;}
.sidebarTop{
  padding:10px;
  border-bottom: 1px solid color-mix(in oklab, var(--border), transparent 30%);
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}

.searchRow{display:flex; gap:8px; align-items:center;}
.search{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  background: color-mix(in oklab, var(--panel2), transparent 40%);
}
.tabs{
  margin-top:10px;
  display:flex; gap:8px;
}
.tab{
  border:1px solid var(--border);
  background: transparent;
  color: var(--muted);
  padding:8px 10px;
  border-radius: 12px;
  cursor:pointer;
}
.tab.active{
  background: rgba(122,162,247,.14);
  border-color: rgba(122,162,247,.34);
  color: var(--text);
}

.tagFilterRow{
  margin-top:10px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tagPill{
  font-size:12px;
  padding:7px 10px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 40%);
  color: var(--muted);
  cursor:pointer;
}
.tagPill.active{
  background: rgba(125,207,255,.16);
  border-color: rgba(125,207,255,.32);
  color: var(--text);
}

.list{
  flex:1;
  overflow:auto;
  padding:10px;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.item{
  border:1px solid color-mix(in oklab, var(--border), transparent 10%);
  background: color-mix(in oklab, var(--panel2), transparent 45%);
  border-radius: var(--radius2);
  padding:10px 10px;
  cursor:pointer;
  transition: border-color .12s ease, transform .08s ease;
}
.item:hover{border-color: color-mix(in oklab, var(--border), white 15%);}
.item:active{transform: translateY(1px);}
.item.active{
  border-color: rgba(122,162,247,.45);
  background: rgba(122,162,247,.14);
}
.itemRow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.badges{display:flex; gap:6px; align-items:center}
.badge{
  font-size:11px;
  padding:4px 8px;
  border-radius: 999px;
  border:1px solid var(--border);
  color: var(--muted2);
}
.badge.pin{border-color: rgba(122,162,247,.35); color: color-mix(in oklab, var(--text), rgba(122,162,247,.4) 30%);}

.itemTitle{font-weight:900; font-size:14px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.itemBody{margin-top:6px; font-size:12px; color:var(--muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.itemMeta{margin-top:8px; font-size:11px; color:var(--muted2); display:flex; gap:8px; flex-wrap:wrap;}

.colorDot{
  width:10px; height:10px;
  border-radius: 999px;
  border:1px solid var(--border);
  flex: 0 0 auto;
}
.dot-slate{background: var(--c-slate);}
.dot-rose{background: var(--c-rose);}
.dot-amber{background: var(--c-amber);}
.dot-emerald{background: var(--c-emerald);}
.dot-sky{background: var(--c-sky);}
.dot-violet{background: var(--c-violet);}

.sidebarFooter{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 12px;
  border-top: 1px solid color-mix(in oklab, var(--border), transparent 30%);
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}
.footerBtns{display:flex; gap:8px; align-items:center;}

.editor{display:flex; flex-direction:column;}
.editorHeader{
  padding:10px 10px 8px;
  border-bottom: 1px solid color-mix(in oklab, var(--border), transparent 30%);
  display:flex; justify-content:space-between; gap:10px; align-items:flex-start;
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}
.chips{display:flex; gap:8px; flex-wrap:wrap;}
.chip{
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 40%);
  padding:8px 10px;
  border-radius: 999px;
  cursor:pointer;
  font-size:12px;
}
.chip:hover{background: color-mix(in oklab, var(--panel2), white 4%);}
.chip:disabled{opacity:.5; cursor:not-allowed}
.chip.ghost{background: transparent;}

.palette{
  display:flex; gap:8px; flex-wrap:wrap; justify-content:flex-end;
}
.swatch{
  width:22px; height:22px;
  border-radius: 999px;
  border:1px solid var(--border);
  cursor:pointer;
  box-shadow: inset 0 0 0 2px transparent;
}
.swatch.active{box-shadow: inset 0 0 0 2px color-mix(in oklab, var(--accent), white 10%);}
.sw-slate{background: var(--c-slate);}
.sw-rose{background: var(--c-rose);}
.sw-amber{background: var(--c-amber);}
.sw-emerald{background: var(--c-emerald);}
.sw-sky{background: var(--c-sky);}
.sw-violet{background: var(--c-violet);}

.editorBody{
  flex:1;
  min-height:0;
  display:grid;
  grid-template-columns: 1fr 8px 1fr;
}
.editorBody[data-mode="edit"]{grid-template-columns: 1fr; }
.editorBody[data-mode="preview"]{grid-template-columns: 1fr; }
.editorBody[data-mode="edit"] .panePreview,
.editorBody[data-mode="edit"] .divider{display:none;}
.editorBody[data-mode="preview"] .paneEdit,
.editorBody[data-mode="preview"] .divider{display:none;}

.pane{min-height:0; overflow:auto;}
.paneEdit{padding:10px; display:flex; flex-direction:column; gap:10px;}
.panePreview{padding:10px; background: color-mix(in oklab, var(--panel2), transparent 40%);}
.divider{background: color-mix(in oklab, var(--border), transparent 45%);}

.noteTitle{
  padding:14px 14px;
  border-radius: 16px;
  font-size:16px;
  font-weight:900;
  background: color-mix(in oklab, var(--panel2), transparent 40%);
}
.tagEditor{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  padding:10px;
  border:1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in oklab, var(--panel2), transparent 45%);
}
.tagList{display:flex; gap:8px; flex-wrap:wrap;}
.tagChip{
  font-size:12px;
  padding:6px 10px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 35%);
  cursor:pointer;
}
.tagChip:hover{border-color: color-mix(in oklab, var(--border), white 18%);}
.tagChip .x{margin-left:6px; opacity:.7}
.tagInput{
  border:0;
  min-width: 160px;
  padding:8px 6px;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  outline:none;
}

.noteBody{
  flex:1;
  min-height:0;
  resize:none;
  padding:14px 14px;
  line-height:1.55;
  font-size:14px;
  border-radius: 16px;
  background: color-mix(in oklab, var(--panel2), transparent 40%);
}

.previewHeader{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:10px;
}
.preview{
  padding:14px 14px;
  border-radius: 16px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel), transparent 20%);
  min-height: calc(100% - 40px);
}

/* Markdown styling */
.preview h1,.preview h2,.preview h3{margin: 12px 0 8px; line-height:1.2}
.preview p{margin: 8px 0}
.preview code{padding:2px 6px; border-radius:8px; border:1px solid var(--border); background: color-mix(in oklab, var(--panel2), transparent 35%);}
.preview pre{
  overflow:auto;
  padding:12px;
  border-radius: 14px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}
.preview pre code{border:0; background: transparent; padding:0}
.preview a{color: color-mix(in oklab, var(--accent), var(--text) 20%);}
.preview blockquote{
  margin:10px 0;
  padding:10px 12px;
  border-left: 3px solid var(--accent);
  background: color-mix(in oklab, var(--panel2), transparent 45%);
  border-radius: 12px;
}

.editorFooter{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-top: 1px solid color-mix(in oklab, var(--border), transparent 30%);
  background: color-mix(in oklab, var(--panel2), transparent 35%);
}

.tiny{font-size:12px; color:var(--muted2);}

.toast{
  position: fixed;
  left: 50%;
  bottom: calc(14px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: color-mix(in oklab, var(--panel), black 22%);
  border:1px solid color-mix(in oklab, var(--border), white 10%);
  border-radius: 14px;
  padding:10px 12px;
  font-size:13px;
  max-width: min(520px, calc(100% - 24px));
  width: fit-content;
  opacity: 0;
  pointer-events:none;
  transition: opacity .18s ease, transform .18s ease;
}
.toast.show{
  opacity:1;
  transform: translateX(-50%) translateY(-2px);
}

@media (max-width: 980px){
  .main{grid-template-columns: 1fr;}
  .sidebar{order:2}
  .editor{order:1}
  .editorBody{grid-template-columns: 1fr;}
  .panePreview,.divider{display:none;}
  .editorBody[data-mode="preview"] .paneEdit{display:none;}
  .editorBody[data-mode="preview"] .panePreview{display:block;}
}