:root{
  --bg:#070b14;
  --card:rgba(255,255,255,.06);
  --card2:rgba(255,255,255,.10);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.68);
  --line:rgba(255,255,255,.14);
  --shadow:0 20px 80px rgba(0,0,0,.55);
  --radius:22px;
  --focus:0 0 0 3px rgba(255,255,255,.22);
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,"Noto Sans","Helvetica Neue",sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 600px at 12% 10%, rgba(124,92,255,.25), transparent 55%),
    radial-gradient(800px 540px at 88% 18%, rgba(0,214,255,.18), transparent 55%),
    radial-gradient(900px 700px at 60% 90%, rgba(255,87,143,.14), transparent 55%),
    linear-gradient(180deg, #060913 0%, #050812 60%, #040610 100%);
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="140" height="140"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency=".8" numOctaves="3" stitchTiles="stitch"/></filter><rect width="140" height="140" filter="url(%23n)" opacity=".18"/></svg>');
  mix-blend-mode:overlay;
  opacity:.35;
}

.orb{
  position:fixed;
  width:42vmax;
  height:42vmax;
  border-radius:999px;
  filter:blur(40px);
  opacity:.35;
  transform:translate3d(0,0,0);
  animation:float 14s ease-in-out infinite;
}

.orb.a{
  left:-12vmax;
  top:-10vmax;
  background:radial-gradient(circle at 30% 30%, rgba(124,92,255,.9), transparent 62%);
}
.orb.b{
  right:-14vmax;
  top:8vmax;
  background:radial-gradient(circle at 30% 30%, rgba(0,214,255,.9), transparent 62%);
  animation-duration:18s;
}
.orb.c{
  left:18vmax;
  bottom:-18vmax;
  background:radial-gradient(circle at 30% 30%, rgba(255,87,143,.9), transparent 62%);
  animation-duration:22s;
}

@keyframes float{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(0,18px,0) scale(1.02)}
}

.wrap{
  min-height:100%;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:48px 18px;
  position:relative;
  z-index:1;
}

.card{
  width:min(1440px, 100%);
  background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  position:relative;
}

.card::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:radial-gradient(600px 220px at 24% 0%, rgba(255,255,255,.16), transparent 65%);
  pointer-events:none;
}

.top{
  display:flex;
  gap:22px;
  padding:28px 28px 0 28px;
  align-items:center;
  justify-content:space-between;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  user-select:none;
}

.logo{
  width:40px;
  height:40px;
  border-radius:14px;
  background:linear-gradient(135deg, rgba(124,92,255,.95), rgba(0,214,255,.95));
  box-shadow:0 14px 40px rgba(0,0,0,.35);
  position:relative;
}

.logo::after{
  content:"";
  position:absolute;
  inset:9px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.55);
  opacity:.65;
}

.brand b{font-weight:700;letter-spacing:.2px}
.brand span{color:var(--muted);font-size:13px}

.pill{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:rgba(255,255,255,.82);
  font-size:13px;
}

.tag-btn{
  appearance:none;
  cursor:pointer;
}

.dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:rgba(0,255,170,.95);
  box-shadow:0 0 0 4px rgba(0,255,170,.12);
  animation:pulse 1.6s ease-in-out infinite;
}

@keyframes pulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(1.2);opacity:.75}
}

.hero-block{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:18px;
  padding:22px 28px 0 28px;
}

.hero,
.side,
.sidebar,
.content,
.tool-panel,
.result-box{
  border-radius:calc(var(--radius) - 8px);
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
}

.hero{
  padding:22px;
}

.hero h1{
  margin:0 0 10px 0;
  font-size:clamp(30px, 4vw, 48px);
  letter-spacing:-.6px;
  line-height:1.05;
}

.hero p{
  margin:0;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.6;
  max-width:72ch;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:18px;
}

.side{
  padding:22px;
}

.side h2,
.panel-head h3{
  margin:0 0 10px 0;
}

.side h2{
  font-size:16px;
  color:rgba(255,255,255,.90);
}

.list{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:12px;
}

.item{
  padding:12px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.14);
}

.item b{
  display:block;
  font-size:13.5px;
  margin-bottom:4px;
}

.item span{
  display:block;
  font-size:13px;
  color:var(--muted);
  line-height:1.45;
}

.meta{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:14px;
  padding-top:14px;
  border-top:1px dashed rgba(255,255,255,.14);
  color:rgba(255,255,255,.70);
  font-size:12.5px;
}

.meta i{
  font-style:normal;
  padding:8px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
}

.workspace{
  display:grid;
  grid-template-columns:340px 1fr;
  gap:18px;
  padding:22px 28px 0 28px;
  align-items:start;
}

.sidebar{
  position:sticky;
  top:18px;
  padding:16px;
  max-height:calc(100vh - 90px);
  overflow:auto;
}

.sidebar-head{
  margin-bottom:14px;
}

.chips{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:16px;
}

.chip{
  appearance:none;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);
  color:rgba(255,255,255,.86);
  padding:10px 12px;
  border-radius:999px;
  cursor:pointer;
  transition:.2s ease;
}

.chip:hover,
.chip.active{
  background:rgba(255,255,255,.11);
  border-color:rgba(255,255,255,.24);
}

.menu-group{
  margin-bottom:16px;
}

.menu-title{
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.12em;
  color:rgba(255,255,255,.56);
  margin:0 0 10px 2px;
}

.menu-item{
  width:100%;
  text-align:left;
  appearance:none;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.04);
  color:inherit;
  border-radius:16px;
  padding:14px;
  cursor:pointer;
  margin-bottom:10px;
  transition:transform .12s ease, background .2s ease, border-color .2s ease;
}

.menu-item:hover{
  transform:translateY(-1px);
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.18);
}

.menu-item.active{
  background:linear-gradient(135deg, rgba(124,92,255,.20), rgba(0,214,255,.12));
  border-color:rgba(255,255,255,.22);
}

.menu-item b{
  display:block;
  margin-bottom:5px;
  font-size:14px;
}

.menu-item span{
  display:block;
  color:var(--muted);
  font-size:12.5px;
  line-height:1.4;
}

.menu-item.hidden,
.menu-group.hidden{
  display:none;
}

.content{
  min-height:720px;
  padding:18px;
}

.content-empty{
  min-height:560px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:var(--muted);
  border:1px dashed rgba(255,255,255,.12);
  border-radius:16px;
  background:rgba(0,0,0,.08);
}

.content-empty h2{
  margin:0 0 8px 0;
  color:var(--text);
}

.tool-panel{
  display:none;
  padding:18px;
}

.tool-panel.active{
  display:block;
}

.panel-head{
  margin-bottom:14px;
}

.panel-head h3{
  font-size:20px;
  margin:0 0 6px 0;
}

.panel-head p{
  margin:0;
  color:var(--muted);
  line-height:1.5;
  font-size:14px;
}

.form-grid{
  display:grid;
  gap:12px;
}

.form-grid.cols-2{grid-template-columns:repeat(2, minmax(0,1fr))}
.form-grid.cols-3{grid-template-columns:repeat(3, minmax(0,1fr))}
.form-grid.cols-4{grid-template-columns:repeat(4, minmax(0,1fr))}

.field{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.field.full{
  grid-column:1 / -1;
}

.field span,
.check span{
  font-size:13px;
  color:rgba(255,255,255,.78);
}

.check{
  display:flex;
  align-items:center;
  gap:8px;
  padding:12px 14px;
  min-height:48px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
}

.inp{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(0,0,0,.20);
  color:rgba(255,255,255,.92);
  font-size:14px;
}

.inp:focus{
  outline:none;
  box-shadow:var(--focus);
}

.textarea{
  resize:vertical;
}

.mono{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
}

.actions-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
  margin-bottom:14px;
}

.btn{
  appearance:none;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.9);
  padding:11px 14px;
  border-radius:14px;
  cursor:pointer;
  font-weight:600;
  font-size:14px;
  text-decoration:none;
  transition:transform .08s ease, background .2s ease, border-color .2s ease;
  user-select:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

.btn:hover{
  background:rgba(255,255,255,.10);
  border-color:rgba(255,255,255,.22);
}

.btn:active{
  transform:translateY(1px);
}

.btn.primary{
  background:linear-gradient(135deg, rgba(124,92,255,.95), rgba(0,214,255,.75));
  border-color:rgba(255,255,255,.22);
}

.btn.primary:hover{
  filter:brightness(1.04);
}

.btn:focus{
  outline:none;
  box-shadow:var(--focus);
}

.qr-box{
  min-height:240px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:16px;
  border:1px dashed rgba(255,255,255,.16);
  background:rgba(0,0,0,.18);
  padding:16px;
}

.qr-output{
  width:100%;
  min-height:180px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.qr-output img,
.qr-output canvas{
  background:#fff;
  padding:10px;
  border-radius:12px;
  max-width:100%;
}

.stats-grid{
  display:grid;
  grid-template-columns:repeat(5, minmax(0,1fr));
  gap:12px;
  margin-top:14px;
}

.stat-card{
  padding:14px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.14);
}

.stat-card b{
  display:block;
  font-size:20px;
  margin-bottom:4px;
}

.stat-card span{
  color:var(--muted);
  font-size:13px;
}

.result-box{
  min-height:90px;
  padding:14px;
  white-space:pre-wrap;
  line-height:1.5;
  background:rgba(0,0,0,.22);
}

.diff-line{
  padding:6px 8px;
  border-radius:8px;
  margin-bottom:6px;
}

.diff-add{
  background:rgba(20,160,90,.18);
  border:1px solid rgba(20,160,90,.35);
}

.diff-del{
  background:rgba(200,60,60,.18);
  border:1px solid rgba(200,60,60,.35);
}

.diff-same{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);
}

.footer{
  padding:24px 28px 26px 28px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.62);
  font-size:12.5px;
}

.toast{
  position:fixed;
  left:50%;
  bottom:18px;
  transform:translateX(-50%);
  padding:10px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(0,0,0,.55);
  color:rgba(255,255,255,.86);
  font-size:13px;
  display:none;
  z-index:11;
  backdrop-filter:blur(10px);
}

.toast.show{
  display:block;
  animation:toast 2.2s ease forwards;
}

@keyframes toast{
  0%{opacity:0;transform:translateX(-50%) translateY(10px)}
  12%{opacity:1;transform:translateX(-50%) translateY(0)}
  80%{opacity:1}
  100%{opacity:0;transform:translateX(-50%) translateY(6px)}
}

body.light-theme{
  --bg:#f6f7fb;
  --text:rgba(10,14,25,.92);
  --muted:rgba(10,14,25,.64);
  --line:rgba(10,14,25,.12);
  background:
    radial-gradient(900px 600px at 12% 10%, rgba(124,92,255,.18), transparent 55%),
    radial-gradient(800px 540px at 88% 18%, rgba(0,214,255,.14), transparent 55%),
    radial-gradient(900px 700px at 60% 90%, rgba(255,87,143,.12), transparent 55%),
    linear-gradient(180deg, #f7f8ff 0%, #f2f4ff 60%, #eef1ff 100%);
}

body.light-theme .inp,
body.light-theme .check,
body.light-theme .item,
body.light-theme .stat-card,
body.light-theme .result-box,
body.light-theme .content-empty,
body.light-theme .qr-box,
body.light-theme .menu-item{
  background:rgba(255,255,255,.50);
}

@media (max-width: 1240px){
  .workspace{
    grid-template-columns:300px 1fr;
  }

  .stats-grid{
    grid-template-columns:repeat(3, minmax(0,1fr));
  }

  .form-grid.cols-4{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
}

@media (max-width: 980px){
  .top{
    flex-direction:column;
    align-items:flex-start;
  }

  .pill{
    justify-content:flex-start;
  }

  .hero-block{
    grid-template-columns:1fr;
  }

  .workspace{
    grid-template-columns:1fr;
  }

  .sidebar{
    position:static;
    max-height:none;
  }

  .form-grid.cols-2,
  .form-grid.cols-3,
  .form-grid.cols-4{
    grid-template-columns:1fr;
  }

  .stats-grid{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .content{
    min-height:unset;
  }

  .content-empty{
    min-height:260px;
  }
}

@media (max-width: 620px){
  .wrap{padding:20px 12px}

  .top,
  .hero-block,
  .workspace,
  .footer{
    padding-left:16px;
    padding-right:16px;
  }

  .hero h1{
    font-size:30px;
  }

  .stats-grid{
    grid-template-columns:1fr;
  }
}

@media (prefers-reduced-motion: reduce){
  .orb,
  .dot{
    animation:none;
  }

  html{
    scroll-behavior:auto;
  }
}