:root{--bg:#f4f7f4;--card:#fff;--ink:#17231b;--muted:#6d7a71;--green:#176b3a;--green2:#2f8b50;--soft:#e8f3eb;--line:#dce6df;--warn:#f2a93b;--shadow:0 16px 40px rgba(23,55,35,.08)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--ink)}button,textarea{font:inherit}.topbar{height:68px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:0 22px;position:sticky;top:0;z-index:20}.brand{font-size:24px;font-weight:900}.brand span{color:var(--green)}.beta{font-size:11px;background:#fff0cf;color:#8a5c00;padding:7px 10px;border-radius:999px;font-weight:900}.topnote{margin-left:auto;color:var(--muted);font-size:13px}
.app{max-width:1580px;margin:0 auto;padding:18px;display:grid;grid-template-columns:360px minmax(560px,1fr) 315px;gap:16px;min-height:calc(100vh - 68px)}.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.panel-head{padding:18px;border-bottom:1px solid var(--line)}.panel-head h1,.panel-head h2{margin:4px 0 0}.panel-head h1{font-size:22px}.panel-head h2{font-size:19px}.panel-head p{font-size:13px;color:var(--muted);line-height:1.45;margin:7px 0 0}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.1em;color:var(--green)}
.assistant{display:flex;flex-direction:column;max-height:calc(100vh - 104px)}.chat{padding:16px;overflow:auto;flex:1;display:flex;flex-direction:column;gap:12px}.bubble{max-width:90%;padding:12px 13px;border-radius:15px;line-height:1.45;font-size:14px}.bubble.ai{background:#eef5f0;align-self:flex-start}.bubble.user{background:var(--green);color:#fff;align-self:flex-end}.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.chips button{border:1px solid #bfd5c5;background:#fff;color:var(--green);border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;cursor:pointer}.attachments{display:flex;gap:7px;padding:10px 12px 0}.attachments button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 10px;font-size:12px;cursor:pointer}.composer{display:flex;gap:8px;padding:12px}.composer textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:12px;padding:12px;outline:none}.composer button{border:0;border-radius:12px;background:var(--green);color:#fff;font-weight:900;padding:0 16px;cursor:pointer}
.estimate-head{padding:18px;display:flex;justify-content:space-between;gap:12px;align-items:flex-start;border-bottom:1px solid var(--line)}.estimate-head h2{margin:4px 0 0}.demo{font-size:11px;background:#fff0cf;color:#8a5c00;border:1px solid #ead29c;padding:7px 9px;border-radius:999px;font-weight:900}.meta{display:flex;gap:8px;flex-wrap:wrap;padding:12px 18px;border-bottom:1px solid var(--line)}.meta span{font-size:12px;background:#f6f8f6;border:1px solid var(--line);padding:7px 9px;border-radius:999px;color:#526158}.totals{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}.totals div{background:#f7faf7;border:1px solid var(--line);border-radius:14px;padding:12px}.totals .grand{background:#173f29;color:#fff}.totals small{display:block;font-size:11px;color:var(--muted)}.totals .grand small{color:#cfe0d4}.totals strong{display:block;font-size:18px;margin-top:4px}.tabs{display:flex;gap:5px;padding:10px 18px;border-bottom:1px solid var(--line)}.tabs button{border:0;background:transparent;border-radius:10px;padding:9px 11px;font-weight:800;color:var(--muted);cursor:pointer}.tabs button.active{background:var(--soft);color:var(--green)}.tab{display:none}.tab.active{display:block}.section-title{font-size:11px;letter-spacing:.09em;text-transform:uppercase;font-weight:900;color:#7b8a80;padding:16px 18px 7px}.line{display:grid;grid-template-columns:minmax(180px,1.6fr) .55fr .75fr .75fr .7fr;gap:8px;align-items:center;padding:10px 18px;border-top:1px solid #edf1ee;font-size:13px}.line div{display:flex;flex-direction:column}.line small{font-size:10px;color:var(--muted);margin-top:2px}.line strong{white-space:nowrap}.line em{font-style:normal;font-size:10px;font-weight:900;padding:5px 7px;border-radius:999px;text-align:center}.need{background:#fff1dc;color:#9b6515}.calc{background:#eaf1fb;color:#3d67a1}.ok{background:#e7f5eb;color:#267444}.option{background:#f1f2f1;color:#68736c}.range{margin:14px 18px;background:#153f27;color:#fff;border-radius:16px;padding:16px;display:flex;justify-content:space-between;gap:16px}.range small{display:block;color:#cfe0d4}.range strong{display:block;font-size:20px;margin-top:4px}.footnote{font-size:11px;color:#7f8d84;padding:0 18px 18px}.data-grid{padding:18px;display:grid;grid-template-columns:1fr 1fr;gap:10px}.data-grid>div{border:1px solid var(--line);border-radius:12px;padding:12px}.data-grid b{display:block;font-size:12px}.data-grid span{display:block;margin-top:6px;font-size:14px}.contractors{padding:18px}.contractors p{font-size:13px;color:var(--muted)}.contractor-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.contractor-grid article{border:1px solid var(--line);border-radius:14px;padding:13px;display:flex;flex-direction:column;gap:8px}.contractor-grid article span{font-size:12px;color:var(--muted)}.contractor-grid article strong{font-size:18px}.contractor-grid article button{border:0;background:var(--soft);color:var(--green);border-radius:10px;padding:9px;font-weight:900;cursor:pointer}
.quality-body{padding:16px}.ring{width:136px;height:136px;border-radius:50%;margin:0 auto 18px;display:grid;place-items:center;background:conic-gradient(var(--green) 0 35%,#e9eeea 35% 100%);position:relative}.ring:after{content:"";position:absolute;width:98px;height:98px;background:#fff;border-radius:50%}.ring div{position:relative;z-index:1;text-align:center}.ring strong{font-size:28px;display:block}.ring span{font-size:10px;color:var(--muted)}.next{background:var(--soft);border-radius:14px;padding:13px;margin-bottom:12px}.next b{font-size:13px}.next p{font-size:12px;color:#4d6254;line-height:1.4;margin:6px 0 0}.check{display:flex;justify-content:space-between;gap:8px;border:1px solid var(--line);border-radius:11px;padding:10px;margin-top:8px;font-size:12px}.check b{color:var(--green);font-size:11px}.primary,.secondary{width:100%;border-radius:12px;padding:12px;font-weight:900;cursor:pointer;margin-top:10px}.primary{border:0;background:var(--green);color:#fff}.secondary{border:1px solid #bcd1c1;background:#fff;color:var(--green)}footer{max-width:1580px;margin:0 auto 30px;padding:0 18px;display:flex;gap:12px;align-items:center;color:var(--muted);font-size:12px}footer b{color:var(--green)}
@media(max-width:1200px){.app{grid-template-columns:330px 1fr}.quality{grid-column:1/-1}.quality-body{display:grid;grid-template-columns:180px 1fr;gap:18px}.contractor-grid{grid-template-columns:1fr}.topnote{display:none}}@media(max-width:780px){.topbar{padding:0 12px}.brand{font-size:20px}.app{display:block;padding:10px}.panel{margin-bottom:10px}.assistant{max-height:none;height:620px}.totals{grid-template-columns:1fr 1fr}.line{grid-template-columns:1.6fr .6fr .8fr}.line>span:nth-of-type(2),.line>em{display:none}.data-grid,.contractor-grid{grid-template-columns:1fr}.quality-body{display:block}footer{display:block}.beta{font-size:9px}}

/* Responsive hardening: mobile-first usability */
button,.chips button,.attachments button,.primary,.secondary{min-height:44px;touch-action:manipulation}
html{-webkit-text-size-adjust:100%}
body{min-width:320px}
@media (max-width:900px){
  .app{grid-template-columns:1fr;padding:10px;gap:10px}
  .assistant{max-height:none;height:auto}
  .chat{min-height:320px;max-height:48dvh}
  .quality{grid-column:auto}
  .quality-body{display:block}
  .totals{grid-template-columns:1fr 1fr}
  .contractor-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .topbar{height:auto;min-height:58px;padding:9px 12px;flex-wrap:wrap;gap:7px}
  .brand{font-size:20px}
  .beta{font-size:9px;padding:6px 8px}
  .app{padding:8px}
  .panel{border-radius:14px}
  .panel-head{padding:15px}
  .panel-head h1{font-size:20px;line-height:1.15}
  .assistant{height:auto}
  .chat{min-height:280px;max-height:none}
  .composer{position:sticky;bottom:0;background:#fff;padding:10px;z-index:5;border-top:1px solid var(--line)}
  .composer textarea{min-height:52px;font-size:16px}
  .composer button{min-width:52px;padding:0 12px}
  .attachments{overflow-x:auto;white-space:nowrap;padding-bottom:3px}
  .attachments button{flex:0 0 auto}
  .estimate-head{padding:15px}
  .estimate-head h2{font-size:19px}
  .meta{padding:10px 14px}
  .meta span{font-size:11px}
  .totals{padding:10px 14px;gap:8px}
  .totals strong{font-size:16px}
  .tabs{overflow-x:auto;white-space:nowrap;padding:8px 12px}
  .tabs button{flex:0 0 auto;min-height:40px}
  .section-title{padding:14px 14px 6px}
  .line{margin:0 10px 8px;padding:11px 12px;border:1px solid var(--line);border-radius:12px;display:grid;grid-template-columns:1fr auto;grid-template-areas:"name status" "qty sum" "price sum";gap:5px 10px;background:#fff}
  .line>div{grid-area:name}
  .line>span:nth-of-type(1){grid-area:qty;color:var(--muted);font-size:12px}
  .line>span:nth-of-type(2){grid-area:price;display:block!important;color:var(--muted);font-size:12px}
  .line>strong{grid-area:sum;align-self:center;font-size:14px}
  .line>em{grid-area:status;display:inline-block!important;justify-self:end}
  .range{margin:12px 10px;display:grid;grid-template-columns:1fr;gap:10px}
  .range strong{font-size:18px}
  .data-grid{padding:12px;grid-template-columns:1fr}
  .contractors{padding:12px}
  .quality .panel-head{padding-bottom:10px}
  .quality-body{padding:12px}
  .ring{width:120px;height:120px}
  .ring:after{width:88px;height:88px}
  .check{min-height:46px;align-items:center}
  .primary,.secondary{position:relative}
  footer{padding:0 12px 18px;margin-bottom:0}
}
@media (max-width:380px){
  .totals{grid-template-columns:1fr}
  .brand{font-size:18px}
  .line{grid-template-columns:1fr;grid-template-areas:"name" "qty" "price" "sum" "status"}
  .line>strong,.line>em{justify-self:start}
}
@media (orientation:landscape) and (max-height:520px){
  .topbar{position:static}
  .chat{max-height:52vh}
}

.empty-estimate{margin:10px 18px 18px;padding:18px;border:1px dashed #bfd0c3;border-radius:14px;background:#f9fbf9;color:var(--muted);font-size:13px;line-height:1.5}
.ai-source{display:inline-block;margin-top:8px;font-size:10px;font-weight:900;letter-spacing:.03em;padding:4px 7px;border-radius:999px;background:#e8f3eb;color:var(--green)}
.ai-source.fallback{background:#fff1dc;color:#986415}
.loading-dot:after{content:"…";animation:dots 1.2s steps(4,end) infinite}@keyframes dots{0%{content:""}25%{content:"."}50%{content:".."}75%,100%{content:"..."}}
@media(max-width:640px){.empty-estimate{margin:8px 10px 12px;padding:14px}}

.address-assist{max-width:100%;width:100%}
.address-assist>small{display:block;margin-top:5px;color:#607268}
.address-input{width:100%;margin-top:10px;border:1px solid #bfd5c5;border-radius:10px;padding:11px 12px;font:inherit;font-size:16px;outline:none;background:#fff}
.address-results{display:grid;gap:6px;margin-top:8px}
.address-option{display:flex;flex-direction:column;align-items:flex-start;text-align:left;width:100%;border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px;cursor:pointer;color:var(--ink)}
.address-option:hover{border-color:#a6c9af;background:#f9fcfa}
.address-option b{font-size:12px;line-height:1.35}.address-option small{font-size:10px;color:var(--muted);margin-top:3px}
.address-loading{font-size:12px;color:var(--muted);padding:8px 2px}
footer a{margin-left:auto;color:var(--green);font-weight:800;text-decoration:none}
@media(max-width:640px){footer a{display:block;margin:8px 0 0}.address-assist{max-width:100%}}

.legal-links{margin-left:auto;display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.legal-links a{color:var(--green);font-weight:800;text-decoration:none}
@media(max-width:780px){.legal-links{margin:10px 0 0;justify-content:flex-start}}

.portal-links{display:flex;gap:8px;margin-left:6px}.portal-links a{border:1px solid var(--line);background:#fff;color:var(--green);text-decoration:none;font-size:12px;font-weight:900;padding:8px 10px;border-radius:10px;white-space:nowrap}
@media(max-width:1050px){.portal-links{width:100%;order:3;margin:0;overflow:auto}.portal-links a{flex:0 0 auto}}