@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap");

:root{
  --bg:#f5f7fb;
  --bg2:#eef2f8;
  --card:rgba(255,255,255,.94);
  --card-hover:rgba(255,255,255,.99);
  --text:#152033;
  --text2:#4d5b74;
  --muted:#72809a;
  --accent:#2563eb;
  --accent-h:#1d4ed8;
  --accent-glow:rgba(37,99,235,.18);
  --accent-soft:rgba(37,99,235,.10);
  --border:rgba(15,23,42,.08);
  --border-h:rgba(37,99,235,.22);
  --input:rgba(248,250,252,.95);
  --r:14px;
  --r-sm:8px;
  --font:"Inter",-apple-system,system-ui,sans-serif;
  --mono:"JetBrains Mono","Fira Code",monospace;
  --ease:cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

body{
  min-height:100dvh;
  font-family:var(--font);
  line-height:1.65;
  color:var(--text);
  background:
    radial-gradient(ellipse 80% 45% at 50% -10%, rgba(37,99,235,.10), transparent 70%),
    linear-gradient(180deg, rgba(255,255,255,.96), rgba(245,247,251,1));
  -webkit-font-smoothing:antialiased;
}

::selection{background:rgba(37,99,235,.18);color:var(--text)}

a{color:var(--accent);text-decoration:none;transition:color .15s var(--ease)}
a:hover{color:var(--accent-h)}

code,pre,kbd,samp{font-family:var(--mono);font-size:.88em}
code{background:rgba(37,99,235,.08);padding:.12em .4em;border-radius:3px;color:var(--accent-h)}
pre{background:var(--bg2);padding:1rem 1.2rem;border-radius:var(--r-sm);overflow-x:auto;border:1px solid var(--border)}
pre code{background:none;padding:0}

.topbar{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.78);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--border);
}

.topbar nav{
  max-width:1100px;
  margin:0 auto;
  padding:.8rem 1.5rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

.brand{
  display:flex;
  align-items:center;
  gap:.55rem;
  font-size:1rem;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text);
}

.brand:hover{color:var(--accent)}
.brand-icon{width:20px;height:20px;color:var(--accent)}

.nav-actions{display:flex;gap:1.4rem}
.nav-link{font-size:.88rem;font-weight:600;color:var(--muted)}
.nav-link:hover{color:var(--accent)}

.hero{
  position:relative;
  max-width:1100px;
  margin:0 auto;
  padding:5.5rem 1.5rem 3rem;
  text-align:center;
  overflow:hidden;
}

.hero-glow{
  position:absolute;
  top:-80px;
  left:50%;
  transform:translateX(-50%);
  width:600px;
  height:600px;
  background:radial-gradient(circle,rgba(37,99,235,.12) 0%,transparent 65%);
  pointer-events:none;
}

.hero-tag{
  margin-bottom:1rem;
  color:var(--accent);
  font-size:.9rem;
  font-weight:600;
}

.hero h1{
  margin-bottom:.8rem;
  font-size:clamp(3rem,8vw,4.8rem);
  font-weight:800;
  line-height:1;
  letter-spacing:-.04em;
}

.hero h1 .accent{color:var(--accent)}

.hero-sub{
  max-width:620px;
  margin:0 auto 2rem;
  color:var(--text2);
  font-size:1.02rem;
  line-height:1.7;
}

.hero-actions{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}

.section{
  max-width:1100px;
  margin:0 auto;
  padding:2.5rem 1.5rem;
}

.section-tight{padding-top:1rem}

.section-heading{margin-bottom:1.2rem}
.section-heading h2{
  margin-bottom:.3rem;
  font-size:1.35rem;
  letter-spacing:-.03em;
}
.section-heading p{color:var(--text2);font-size:.94rem}

.search-shell{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:1rem;
  box-shadow:0 12px 30px rgba(15,23,42,.05);
}

.search-results{
  display:grid;
  gap:.65rem;
  margin-top:.9rem;
}

.search-result{
  display:block;
  background:#fff;
  border:1px solid var(--border);
  border-radius:10px;
  padding:.8rem .95rem;
  color:var(--text);
}

.search-result:hover{
  border-color:var(--border-h);
  box-shadow:0 8px 18px rgba(37,99,235,.08);
}

.no-results{
  color:var(--muted);
  font-size:.88rem;
  padding:.25rem 0;
}

.notes-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:.8rem;
}

.note-card{
  display:block;
  padding:1.1rem 1.3rem;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  box-shadow:0 8px 30px rgba(15,23,42,.04);
  transition:all .2s var(--ease);
}

.note-card:hover{
  background:var(--card-hover);
  border-color:var(--border-h);
  transform:translateY(-2px);
  box-shadow:0 18px 40px rgba(37,99,235,.08);
}

.note-card h3{
  margin-bottom:.25rem;
  font-size:.95rem;
  font-weight:600;
  color:var(--text);
}

.note-card-author{font-size:.78rem;color:var(--muted)}
.empty{color:var(--muted);font-size:.88rem}

.card-form{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  padding:1.6rem 1.8rem;
  box-shadow:0 12px 36px rgba(15,23,42,.05);
}

.field{margin-bottom:1.1rem}
.field label{
  display:block;
  margin-bottom:.35rem;
  color:var(--muted);
  font-size:.84rem;
  font-weight:600;
}

.field-hint{font-weight:400;color:var(--muted)}

.field-row{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:.8rem;
  margin-bottom:1.1rem;
}

input[type="text"],input[type="number"],input[type="url"],input[type="search"],textarea,select{
  width:100%;
  padding:.72rem .9rem;
  font-family:var(--font);
  font-size:.92rem;
  color:var(--text);
  background:var(--input);
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  outline:none;
  transition:border-color .15s var(--ease),box-shadow .15s var(--ease);
}

input:focus,textarea:focus,select:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft);
}

textarea{
  resize:vertical;
  font-family:var(--mono);
  font-size:.84rem;
  line-height:1.55;
}

select{cursor:pointer}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.45rem;
  padding:.72rem 1.6rem;
  border:none;
  border-radius:var(--r-sm);
  font-size:.88rem;
  font-weight:600;
  cursor:pointer;
  text-decoration:none;
  transition:all .18s var(--ease);
}

.btn:disabled{opacity:.45;cursor:not-allowed}

.btn-primary{
  color:#fff;
  background:var(--accent);
  border:1px solid var(--accent);
}

.btn-primary:hover:not(:disabled){
  background:var(--accent-h);
  box-shadow:0 0 24px var(--accent-glow);
  transform:translateY(-1px);
}

.btn-ghost{
  color:var(--text2);
  background:transparent;
  border:1px solid var(--border);
}

.btn-ghost:hover:not(:disabled){
  color:var(--text);
  background:rgba(255,255,255,.5);
  border-color:var(--border-h);
}

.btn-danger{
  color:var(--accent-h);
  background:rgba(37,99,235,.08);
  border:1px solid rgba(37,99,235,.16);
}

.btn-danger:hover:not(:disabled){
  color:#fff;
  background:var(--accent);
  box-shadow:0 0 16px var(--accent-glow);
}

.btn-sm{padding:.5rem 1rem;font-size:.78rem}

.note-main{max-width:820px;margin:0 auto;padding:2rem 1.5rem 4rem}

.note-article{
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r);
  box-shadow:0 16px 48px rgba(15,23,42,.06);
}

.note-head{
  padding:1.8rem 2rem 1.4rem;
  border-bottom:1px solid var(--border);
}

.note-head-meta{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-bottom:.55rem;
  color:var(--muted);
  font-size:.72rem;
}

.dot{color:rgba(37,99,235,.2)}
.note-head-author{color:var(--accent)}

.note-head h1{
  font-size:1.6rem;
  font-weight:700;
  letter-spacing:.02em;
}

.view-switcher{
  display:flex;
  flex-wrap:wrap;
  gap:.55rem;
  margin-top:1rem;
}

.view-pill{
  display:inline-flex;
  align-items:center;
  padding:.38rem .8rem;
  color:var(--text2);
  background:rgba(255,255,255,.72);
  border:1px solid var(--border);
  border-radius:999px;
  font-size:.8rem;
  font-weight:600;
}

.view-pill:hover{color:var(--accent);border-color:var(--border-h)}

.view-pill-active{
  color:var(--accent);
  background:var(--accent-soft);
  border-color:rgba(37,99,235,.22);
}

.note-body{
  min-height:100px;
  padding:1.8rem 2rem;
  line-height:1.8;
  font-size:.98rem;
}

.note-body h1,.note-body h2,.note-body h3,
.note-body h4,.note-body h5,.note-body h6{
  margin-top:1.4rem;
  margin-bottom:.5rem;
  color:var(--text);
}

.note-body p{margin-bottom:.9rem}
.note-body ul,.note-body ol{margin-bottom:.9rem;padding-left:1.4rem}
.note-body li{margin-bottom:.25rem}

.note-body blockquote{
  margin:1rem 0;
  padding:.6rem 1.1rem;
  color:var(--text2);
  background:var(--accent-soft);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
}

.note-body img{max-width:100%;height:auto;border-radius:var(--r-sm);margin:.8rem 0}
.note-body table{width:100%;border-collapse:collapse;margin:.8rem 0}
.note-body th,.note-body td{border:1px solid var(--border);padding:.45rem .7rem;text-align:left}
.note-body th{background:var(--bg2);font-weight:600;font-size:.88rem}
.note-body a{color:var(--accent);border-bottom:1px dashed rgba(37,99,235,.3)}
.note-body a:hover{border-bottom-style:solid}

.note-loading{
  display:flex;
  align-items:center;
  gap:.6rem;
  padding:.5rem 0;
  color:var(--muted);
  font-size:.88rem;
}

.spinner{
  width:16px;
  height:16px;
  border:2px solid var(--border);
  border-top-color:var(--accent);
  border-radius:50%;
  animation:spin .55s linear infinite;
}

@keyframes spin{to{transform:rotate(360deg)}}

.note-actions{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:.8rem;
  margin-top:1.2rem;
}

.toast{
  max-width:1100px;
  margin:1rem auto;
  padding:.8rem 1.2rem;
  font-size:.88rem;
  border-radius:var(--r-sm);
}

.toast-error{
  color:#b91c1c;
  background:rgba(239,68,68,.08);
  border:1px solid rgba(239,68,68,.16);
}

.result-msg{
  display:none;
  margin-top:.8rem;
  padding:.6rem .9rem;
  font-size:.84rem;
  border-radius:var(--r-sm);
}

.result-success{
  color:#15803d;
  background:rgba(34,197,94,.08);
  border:1px solid rgba(34,197,94,.18);
}

.result-error{
  color:#b91c1c;
  background:rgba(239,68,68,.08);
  border:1px solid rgba(239,68,68,.16);
}

.result-msg a{font-weight:600}
.widget-container{margin-top:.8rem;min-height:0}
.settings-meta{
  margin-top:.85rem;
  color:var(--muted);
  font-size:.84rem;
}

footer{
  max-width:1100px;
  margin:0 auto;
  padding:2.5rem 1.5rem;
  text-align:center;
  color:var(--muted);
  font-size:.8rem;
  border-top:1px solid var(--border);
}

::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:rgba(37,99,235,.14);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}

@media(max-width:640px){
  .hero{padding:4rem 1.2rem 3rem}
  .hero h1{font-size:2.6rem}
  .card-form{padding:1.2rem}
  .note-head,.note-body{padding:1.2rem}
  .note-actions{flex-direction:column}
  .nav-actions{gap:.8rem}
}