:root{
  --bg: 11 15 18;
  --panel: 17 24 30;
  --muted: 109 120 129;
  --text: 234 238 243;
  --subtext: 192 199 206;
  --border: 45 58 69;
  --accent: 99 102 241; /* indigo */
  --accent2: 16 185 129; /* emerald */
  --danger: 244 63 94; /* rose */
  --warning: 245 158 11; /* amber */
  --shadow: 0 16px 70px rgba(0,0,0,.45);
  --radius: 16px;
  --radius-sm: 12px;
  --maxw: 1160px;
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --step--1: clamp(.86rem, .83rem + .2vw, .95rem);
  --step-0: clamp(1rem, .94rem + .35vw, 1.1rem);
  --step-1: clamp(1.18rem, 1.05rem + .6vw, 1.35rem);
  --step-2: clamp(1.45rem, 1.2rem + 1.2vw, 1.85rem);
  --step-3: clamp(1.85rem, 1.45rem + 2.2vw, 2.6rem);
  --step-4: clamp(2.25rem, 1.8rem + 3vw, 3.2rem);
}

[data-theme="light"]{
  --bg: 248 250 252;
  --panel: 255 255 255;
  --muted: 78 90 100;
  --text: 15 23 42;
  --subtext: 51 65 85;
  --border: 226 232 240;
  --shadow: 0 16px 50px rgba(2,6,23,.12);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  background: rgb(var(--bg));
  color: rgb(var(--text));
  line-height:1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a{color:inherit; text-decoration:none}
a:hover{color: rgb(var(--text))}
img{max-width:100%; height:auto}
button,input,textarea,select{font:inherit}
::selection{background: rgba(var(--accent),.35)}

.container{max-width:var(--maxw); margin:0 auto; padding:0 20px}
.stack{display:flex; flex-direction:column; gap:16px}
.row{display:flex; gap:16px; align-items:center}
.grid{display:grid; gap:16px}
.grid-2{grid-template-columns: repeat(2, minmax(0,1fr))}
.grid-3{grid-template-columns: repeat(3, minmax(0,1fr))}
@media (max-width: 920px){
  .grid-2,.grid-3{grid-template-columns:1fr}
}

.kbd{
  font-family: var(--font-mono);
  font-size: .85em;
  border:1px solid rgb(var(--border));
  padding:2px 8px;
  border-radius:10px;
  background: rgba(var(--panel), .35);
  color: rgb(var(--subtext));
}

.header{
  position: sticky; top:0; z-index:40;
  background: rgba(var(--bg), .75);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(var(--border), .65);
}
.navbar{
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.brand{display:flex; align-items:center; gap:10px}
.logo{
  width:34px; height:34px; border-radius:12px;
  background: radial-gradient(circle at 30% 30%, rgba(var(--accent2),1), rgba(var(--accent),1));
  box-shadow: 0 10px 35px rgba(var(--accent), .25);
}
.brand b{font-size:1.02rem; letter-spacing:.2px}
.brand span{color: rgba(var(--subtext), .9); font-size:.95rem}
.navlinks{display:flex; gap:18px; align-items:center}
.navlinks a{
  color: rgba(var(--subtext), .92);
  font-size: .95rem;
  padding:10px 10px;
  border-radius: 12px;
  transition: background .18s ease, color .18s ease;
}
.navlinks a:hover{background: rgba(var(--panel), .6); color: rgb(var(--text))}
.navlinks a[aria-current="page"]{background: rgba(var(--panel), .85); color: rgb(var(--text))}
.navactions{display:flex; gap:10px; align-items:center}
.iconbtn{
  border:1px solid rgba(var(--border), .8);
  background: rgba(var(--panel), .35);
  color: rgba(var(--text), .95);
  border-radius: 14px;
  padding:10px 12px;
  cursor:pointer;
  transition: transform .12s ease, background .18s ease, border-color .18s ease;
}
.iconbtn:hover{background: rgba(var(--panel), .7)}
.iconbtn:active{transform: translateY(1px)}
.mobiletoggle{display:none}
@media (max-width: 960px){
  .navlinks{display:none}
  .mobiletoggle{display:inline-flex}
}

.mobilemenu{
  display:none;
  border-top: 1px solid rgba(var(--border), .7);
  padding:14px 0 18px;
}
.mobilemenu a{
  display:block;
  padding:12px 12px;
  border-radius: 14px;
  color: rgba(var(--subtext), .95);
}
.mobilemenu a:hover{background: rgba(var(--panel), .7); color: rgb(var(--text))}
.mobilemenu .divider{height:1px; background: rgba(var(--border), .7); margin:8px 0}
.mobilemenu.open{display:block}

.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-size:.85rem;
  padding:7px 12px;
  border-radius: 999px;
  border:1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .45);
  color: rgba(var(--subtext), .95);
}
.badge.dot:before{
  content:"";
  width:8px; height:8px; border-radius: 99px;
  background: rgba(var(--accent2), 1);
  box-shadow: 0 0 0 4px rgba(var(--accent2), .18);
}
.badge.warn.dot:before{background: rgba(var(--warning),1); box-shadow:0 0 0 4px rgba(var(--warning), .18)}
.badge.danger.dot:before{background: rgba(var(--danger),1); box-shadow:0 0 0 4px rgba(var(--danger), .18)}

.h1{font-size: var(--step-4); line-height:1.05; margin:0}
.h2{font-size: var(--step-3); line-height:1.15; margin:0}
.h3{font-size: var(--step-2); line-height:1.2; margin:0}
.lede{font-size: var(--step-1); color: rgba(var(--subtext), .95); max-width: 70ch}
.p{font-size: var(--step-0); color: rgba(var(--subtext), .95)}
.small{font-size: var(--step--1); color: rgba(var(--subtext), .9)}

.section{padding: 56px 0}
.hero{
  padding: 66px 0 36px;
  position: relative;
  overflow: hidden;
}
.hero:before{
  content:"";
  position:absolute;
  inset:-200px -240px auto -240px;
  height: 540px;
  background: radial-gradient(circle at 30% 30%, rgba(var(--accent), .22), transparent 55%),
              radial-gradient(circle at 70% 50%, rgba(var(--accent2), .18), transparent 55%);
  filter: blur(0px);
  pointer-events:none;
}
.card{
  border: 1px solid rgba(var(--border), .8);
  border-radius: var(--radius);
  background: rgba(var(--panel), .5);
  box-shadow: var(--shadow);
}
.card.soft{box-shadow:none}
.card.pad{padding: 18px}
.card.pad-lg{padding: 22px}
.card h3{margin:0 0 6px}
.hr{height:1px; background: rgba(var(--border), .7); border:0; margin:18px 0}
.btnrow{display:flex; flex-wrap:wrap; gap:12px; align-items:center}
.btn{
  display:inline-flex; align-items:center; gap:10px;
  border-radius: 14px;
  padding: 12px 16px;
  border: 1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .55);
  color: rgb(var(--text));
  cursor:pointer;
  transition: transform .12s ease, background .18s ease, border-color .18s ease;
}
.btn:hover{background: rgba(var(--panel), .85)}
.btn:active{transform: translateY(1px)}
.btn.primary{
  border-color: rgba(var(--accent), .8);
  background: linear-gradient(180deg, rgba(var(--accent), .95), rgba(var(--accent), .75));
  color: white;
}
.btn.primary:hover{background: linear-gradient(180deg, rgba(var(--accent), 1), rgba(var(--accent), .8))}
.btn.ghost{
  background: transparent;
}
.btn .hint{color: rgba(255,255,255,.8)}
.btn.small{padding:10px 12px; font-size:.95rem}

.disclaimer{
  display:flex; gap:12px; align-items:flex-start;
  padding:14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(var(--border), .9);
  background: rgba(var(--panel), .35);
  color: rgba(var(--subtext), .95);
}
.disclaimer strong{color: rgb(var(--text))}
.disclaimer .icon{
  width:22px; height:22px; flex:0 0 22px;
  border-radius: 9px;
  background: rgba(var(--warning), .18);
  border: 1px solid rgba(var(--warning), .55);
  display:flex; align-items:center; justify-content:center;
  margin-top:2px;
}
.disclaimer .icon svg{opacity:.9}

.footer{
  border-top: 1px solid rgba(var(--border), .75);
  padding: 28px 0;
  background: rgba(var(--bg), .85);
}
.footergrid{display:grid; grid-template-columns: 2fr 1fr 1fr; gap: 16px}
@media (max-width: 920px){ .footergrid{grid-template-columns:1fr} }
.footer a{color: rgba(var(--subtext), .95)}
.footer a:hover{color: rgb(var(--text))}
.footer .legal{margin-top:12px; font-size:.88rem; color: rgba(var(--subtext), .85)}

.prose{max-width: 76ch}
.prose h2{margin: 24px 0 8px; font-size: var(--step-2)}
.prose h3{margin: 18px 0 8px; font-size: var(--step-1)}
.prose p{margin: 10px 0; color: rgba(var(--subtext), .95)}
.prose ul{margin: 10px 0 10px 20px; color: rgba(var(--subtext), .95)}
.prose li{margin: 6px 0}
.prose code{
  font-family: var(--font-mono);
  font-size: .9em;
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .45);
}

.reveal{opacity:0; transform: translateY(10px); transition: opacity .5s ease, transform .5s ease}
.reveal.visible{opacity:1; transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1; transform:none; transition:none}
  .btn,.iconbtn,.navlinks a{transition:none}
}


/* Chat */
.chatWrap{display:grid; grid-template-columns: 1.2fr .8fr; gap:16px}
@media (max-width: 920px){ .chatWrap{grid-template-columns:1fr} }
.chatLog{
  height: 520px;
  overflow:auto;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .35);
}
.bubble{margin: 10px 0; padding: 12px 12px; border-radius: 18px; border: 1px solid rgba(var(--border), .75)}
.bubble .meta{display:flex; justify-content:space-between; gap:12px; margin-bottom:8px; font-size:.82rem; color: rgba(var(--subtext), .9)}
.bubble.user{background: rgba(var(--accent), .10); border-color: rgba(var(--accent), .35)}
.bubble.assistant{background: rgba(var(--panel), .55)}
.bubble .content p{margin: 8px 0; color: rgba(var(--subtext), .95)}
.bubble .content h4{margin: 12px 0 6px; font-size: 1.02rem}
.note{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:10px}
.pill{
  font-size:.82rem;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .45);
  color: rgba(var(--subtext), .95);
}
.callout{
  border-radius: 16px;
  border:1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .45);
  padding: 12px 12px;
  margin: 10px 0;
}
.callout.warn{
  border-color: rgba(var(--warning), .55);
  background: rgba(var(--warning), .10);
}
.chatComposer{
  display:flex; gap:10px; align-items:flex-start;
}
.textarea{
  width:100%;
  min-height: 112px;
  resize: vertical;
  border-radius: 16px;
  border:1px solid rgba(var(--border), .85);
  background: rgba(var(--panel), .30);
  color: rgb(var(--text));
  padding: 12px 12px;
  outline:none;
}
.textarea:focus{border-color: rgba(var(--accent), .75)}
.typing{
  display:flex; align-items:center; gap:10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(var(--border), .85);
  color: rgba(var(--subtext), .95);
}
.dots{display:inline-flex; gap:4px}
.dots i{
  width:6px; height:6px; border-radius: 99px;
  background: rgba(var(--subtext), .7);
  animation: bounce 1.2s infinite ease-in-out;
}
.dots i:nth-child(2){animation-delay:.15s}
.dots i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform: translateY(0); opacity:.55}40%{transform: translateY(-4px); opacity:1}}

/* Document report */
.reportHead{display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom: 10px}
.reportGrid{display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:16px}
@media (max-width: 920px){ .reportGrid{grid-template-columns:1fr} }
.reportCard{
  border:1px solid rgba(var(--border), .85);
  border-radius: var(--radius);
  background: rgba(var(--panel), .45);
  padding: 16px;
}
.reportCard h3{margin:0 0 8px}
.reportCard p{margin:0 0 8px; color: rgba(var(--subtext), .95)}
.reportCard ul{margin: 0 0 0 18px; color: rgba(var(--subtext), .95)}