:root{
  --bg:#0d1117; --panel:#161b22; --panel2:#1c2230; --bd:#30363d;
  --fg:#e6edf3; --mut:#8b949e; --acc:#6e9bff; --acc-d:#06122e;
  --ok:#3fb950; --bad:#f85149; --radius:12px;
}
*{box-sizing:border-box}
/* Make the HTML `hidden` attribute win even over display:flex elements
   (modals, attach bar). Without this, `.modal{display:flex}` overrides the
   browser default [hidden]{display:none} and modals never close. */
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;font:15px/1.55 system-ui,Segoe UI,Roboto,Helvetica,sans-serif;background:var(--bg);color:var(--fg)}
.muted{color:var(--mut)} .small{font-size:12px}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit;width:100%;padding:9px 11px;background:#0d1117;border:1px solid var(--bd);border-radius:8px;color:var(--fg)}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--acc)}
label{display:block;font-size:12px;color:var(--mut);margin:12px 0 5px}
.row{display:flex;gap:10px}.row>div{flex:1}
.hint{font-size:11px;color:var(--mut)}

/* ---------- auth ---------- */
.auth-body{display:flex;align-items:center;justify-content:center;height:100vh}
.auth-card{width:340px;background:var(--panel);border:1px solid var(--bd);border-radius:14px;padding:28px}
.auth-card h1{margin:0;font-size:24px} .auth-card .muted{margin:4px 0 18px}
.auth-card button{margin-top:20px;width:100%;padding:11px;background:var(--acc);border:0;border-radius:8px;color:var(--acc-d);font-weight:700}
.auth-err{background:#3d1418;border:1px solid #6e2730;color:#ffb3ba;padding:9px 11px;border-radius:8px;font-size:13px;margin-bottom:12px}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:270px 1fr;height:100vh}
.sidebar{background:var(--panel);border-right:1px solid var(--bd);display:flex;flex-direction:column;padding:16px;gap:10px}
.brand{font-weight:800;font-size:18px;letter-spacing:.3px}
.side-label{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--mut);margin-top:10px}
.conn-select{font-size:13px}
.conv-list{flex:1;overflow:auto;display:flex;flex-direction:column;gap:2px}
.conv{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-radius:8px;font-size:13px;cursor:pointer}
.conv:hover{background:var(--panel2)} .conv.active{background:var(--panel2);border:1px solid var(--bd)}
.conv span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--bd);padding-top:10px;font-size:12px}

button.primary{background:var(--acc);color:var(--acc-d);border:0;border-radius:8px;padding:10px;font-weight:700}
button.ghost{background:transparent;color:var(--fg);border:1px solid var(--bd);border-radius:8px;padding:9px}
button.ghost:hover{border-color:var(--acc)}
button.link{background:none;border:0;color:var(--acc);padding:0;font-size:12px}
button.link.danger{color:var(--bad)}

/* ---------- chat ---------- */
.chat{display:flex;flex-direction:column;height:100vh}
.messages{flex:1;overflow:auto;padding:28px 0;scroll-behavior:smooth}
.empty-state{max-width:680px;margin:14vh auto;text-align:center}
.empty-state h2{font-weight:700;margin:0 0 6px}
.msg{max-width:860px;margin:0 auto 22px;padding:0 24px;display:flex}
.msg.user{justify-content:flex-end}
.msg.user .bubble{background:var(--acc);color:var(--acc-d);padding:11px 15px;border-radius:14px 14px 4px 14px;max-width:75%;font-weight:500}
.assistant-body{width:100%}
.thinking .bubble{color:var(--mut);display:flex;align-items:center;gap:8px}
.dots i{display:inline-block;width:6px;height:6px;margin:0 1px;border-radius:50%;background:var(--mut);animation:b 1s infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{opacity:.3}30%{opacity:1}}

.dash-title{font-size:18px;font-weight:700;margin-bottom:14px}
.metric-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.metric{flex:1;min-width:150px;background:var(--panel);border:1px solid var(--bd);border-radius:var(--radius);padding:16px}
.metric-val{font-size:26px;font-weight:800}
.metric-label{color:var(--mut);font-size:13px;margin-top:2px}
.card{background:var(--panel);border:1px solid var(--bd);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.card-title{font-weight:600;margin-bottom:10px;font-size:14px}
canvas{max-height:340px}
.table-scroll{overflow:auto;max-height:360px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--bd);white-space:nowrap}
th{color:var(--mut);position:sticky;top:0;background:var(--panel)}
.narrative{margin-top:6px;font-size:14.5px}
.narrative h3{font-size:16px;margin:14px 0 6px}.narrative h4{font-size:14px;margin:12px 0 4px}
.narrative ul{margin:6px 0;padding-left:20px}.narrative code{background:#0d1117;padding:1px 5px;border-radius:4px;font-size:12px}
.sql-details{margin-top:12px;font-size:12px}.sql-details summary{cursor:pointer;color:var(--mut)}
.sql-details pre{background:#0d1117;border:1px solid var(--bd);border-radius:8px;padding:10px;overflow:auto}

.composer{display:flex;gap:10px;align-items:flex-end;max-width:860px;width:100%;margin:0 auto;padding:14px 24px 22px}
.composer textarea{resize:none;max-height:180px;border-radius:14px;padding:13px 15px}
.send{width:42px;height:42px;flex:none;border:0;border-radius:50%;background:var(--acc);color:var(--acc-d);font-size:18px;font-weight:800}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}
.modal-card{width:100%;max-width:720px;max-height:88vh;overflow:auto;background:var(--panel);border:1px solid var(--bd);border-radius:16px}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--bd)}
.modal-head h3{margin:0} .x{background:none;border:0;color:var(--mut);font-size:18px}
.modal-body{padding:20px 22px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.modal-body h4{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.5px;color:var(--mut)}
.conn-item{display:flex;justify-content:space-between;align-items:flex-start;padding:10px;border:1px solid var(--bd);border-radius:8px;margin-bottom:8px}
.tag{display:inline-block;background:var(--panel2);border:1px solid var(--bd);border-radius:20px;font-size:10px;padding:1px 8px;margin-left:6px;color:var(--mut)}
.conn-item-btns{display:flex;gap:10px}
.conn-actions{display:flex;gap:10px;margin-top:16px}.conn-actions button{flex:1}
.conn-msg{margin-top:10px;font-size:13px}.conn-msg.ok{color:var(--ok)}.conn-msg.bad{color:var(--bad)}
@media(max-width:680px){.modal-body{grid-template-columns:1fr}.app{grid-template-columns:1fr}.sidebar{display:none}}

/* ---------- toast ---------- */
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);padding:11px 18px;border-radius:10px;font-size:14px;z-index:99;border:1px solid var(--bd)}
.toast.ok{background:#0f2c1a;color:#86efac;border-color:#1f6f3f}
.toast.bad{background:#3d1418;color:#ffb3ba;border-color:#6e2730}

/* ---------- SaaS additions ---------- */
.side-row{display:flex;gap:6px}.ghost.sm{flex:1;padding:7px 4px;font-size:12px}
.plan-strip{border-top:1px solid var(--bd);padding-top:10px;margin-top:6px;font-size:12px}
.plan-line{margin-bottom:6px}
.usage-bar{height:6px;background:#21262d;border-radius:4px;overflow:hidden;margin:4px 0}
.usage-bar i{display:block;height:100%;background:var(--acc)}
.switch-row{display:flex;align-items:center;gap:8px;font-size:14px}
.switch-row input{width:auto}
.mem-list{margin-top:14px;display:flex;flex-direction:column;gap:6px;max-height:300px;overflow:auto}
.mem-item,.file-item{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 10px;background:#0d1117;border:1px solid var(--bd);border-radius:8px;font-size:13px}
.ghost.danger{border-color:#6e2730;color:#f87171}

.composer-wrap{max-width:860px;width:100%;margin:0 auto}
.attach-bar{display:flex;flex-wrap:wrap;gap:8px;padding:10px 24px 0}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel2);border:1px solid var(--bd);border-radius:20px;padding:4px 10px;font-size:12px}
.chip button{background:none;border:0;color:var(--mut);cursor:pointer}
.attach{width:42px;height:42px;flex:none;border:1px solid var(--bd);background:transparent;border-radius:50%;color:var(--fg);font-size:16px}
.attach:hover{border-color:var(--acc)}

/* ---------- marketing / pricing ---------- */
.marketing{max-width:1040px;margin:0 auto;padding:0 20px}
.mk-head{display:flex;justify-content:space-between;align-items:center;padding:22px 0}
.mk-head nav a{color:var(--fg);text-decoration:none}
.mk-hero{text-align:center;padding:40px 0 30px}
.mk-hero h1{font-size:40px;margin:0 0 12px}
.mk-hero p{max-width:620px;margin:0 auto;font-size:16px}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;padding:20px 0 60px}
.plan-card{background:var(--panel);border:1px solid var(--bd);border-radius:16px;padding:24px;display:flex;flex-direction:column}
.plan-name{font-weight:700;font-size:18px}
.plan-price{font-size:32px;font-weight:800;margin:10px 0}
.plan-price span{font-size:14px;color:var(--mut);font-weight:500}
.plan-feats{list-style:none;padding:0;margin:0 0 20px;flex:1;font-size:14px}
.plan-feats li{padding:6px 0;border-bottom:1px solid #21262d}
.plan-feats li:before{content:'✓ ';color:var(--ok)}
.plan-card .primary{width:100%;padding:11px}