/* SkilledTradesAi v3 — chat-first app. navy #042C53 / mid #185FA5 / light #E6F1FB / amber #EF9F27 */
:root{--navy:#042C53;--mid:#185FA5;--light:#E6F1FB;--amber:#EF9F27;--ink:#12202f;--gray:#5b6b7b;--line:#d5e2ef;--r:10px;}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{font-family:'Segoe UI',system-ui,-apple-system,Arial,sans-serif;color:var(--ink);display:flex;overflow:hidden;}
button{font-family:inherit;}

/* ===== SIDEBAR ===== */
.sb{width:280px;min-width:280px;background:var(--navy);color:#dce9f7;display:flex;flex-direction:column;height:100vh;transition:margin-left .2s;}
.sb.closed{margin-left:-280px;}
.sb-head{padding:16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid #ffffff1a;}
.sb-head img{height:30px;}
.sb-head .brand{font-weight:800;font-size:1.05rem;color:#fff;}
.sb-head .brand span{color:var(--amber);}
.sb-scroll{flex:1;overflow-y:auto;padding:12px;}
.sb-label{font-size:.75rem;letter-spacing:1px;text-transform:uppercase;color:#8aa6c2;margin:14px 6px 6px;font-weight:700;}
.sb-tool{display:flex;align-items:center;gap:9px;width:100%;text-align:left;background:none;border:0;color:#dce9f7;padding:9px 10px;border-radius:8px;cursor:pointer;font-size:.92rem;font-weight:600;}
.sb-tool:hover{background:#ffffff14;}
.sb-tool.on{background:var(--mid);color:#fff;}
.sb-tool .ic{width:20px;text-align:center;}
.sb-tool .lock{margin-left:auto;font-size:.75rem;background:var(--amber);color:var(--navy);border-radius:6px;padding:1px 6px;font-weight:800;}
.sb-hist{font-size:.85rem;color:#b8cde2;padding:7px 10px;border-radius:8px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sb-hist:hover{background:#ffffff14;}
.sb-foot{padding:12px;border-top:1px solid #ffffff1a;}
.sb-plan{font-size:.8rem;color:#8aa6c2;margin-bottom:8px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--r);font-weight:700;border:0;cursor:pointer;font-size:.9rem;text-decoration:none;}
.btn-amber{background:var(--amber);color:var(--navy);}
.btn-amber:hover{background:#f7b350;}
.btn-outline{background:transparent;color:#fff;border:2px solid #ffffff66;}
.btn-outline:hover{border-color:#fff;}
.btn-ghost{background:var(--light);color:var(--navy);}
.btn-navy{background:var(--navy);color:#fff;}
.btn-block{width:100%;}
.btn-sm{padding:6px 12px;font-size:.82rem;}

/* ===== MAIN ===== */
.main{flex:1;display:flex;flex-direction:column;height:100vh;background:var(--light);min-width:0;padding:14px;}
.main-card{flex:1;display:flex;flex-direction:column;background:#fff;border-radius:16px;box-shadow:0 4px 24px #042c531a;border:1px solid #c9ddf0;min-height:0;overflow:hidden;}
.topbar{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);background:#fff;border-radius:16px 16px 0 0;}
.topbar .ttl{font-weight:800;color:var(--navy);font-size:1rem;}
.topbar .sub{color:var(--gray);font-size:.8rem;}
.burger{background:none;border:0;font-size:1.3rem;cursor:pointer;color:var(--navy);padding:4px 8px;}
.top-auth{margin-left:auto;display:flex;gap:8px;align-items:center;}
.userchip{font-size:.82rem;font-weight:700;color:var(--navy);background:var(--light);padding:7px 12px;border-radius:8px;}

/* thread */
.thread{flex:1;overflow-y:auto;padding:24px 16px 12px;}
.thread-inner{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:16px;}
.msg{display:flex;gap:12px;}
.msg .av{width:32px;height:32px;border-radius:8px;flex:0 0 32px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.8rem;}
.msg.user .av{background:var(--light);color:var(--navy);}
.msg.ai .av{background:var(--navy);color:var(--amber);}
.msg .bub{background:#fbfdff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;white-space:pre-wrap;font-size:.95rem;line-height:1.55;min-width:0;max-width:100%;overflow-wrap:break-word;}
.msg.user .bub{background:var(--light);border-color:#c3d9ee;}
.msg .bub .att{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:6px;padding:3px 9px;font-size:.78rem;color:var(--mid);font-weight:700;margin-bottom:8px;}
.thinking{color:var(--mid);font-weight:700;font-size:.9rem;}

/* welcome */
.welcome{max-width:760px;margin:6vh auto 0;text-align:center;padding:0 8px;}
.welcome h1{color:var(--navy);font-size:1.7rem;}
.welcome p{color:var(--gray);margin-top:8px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px;}
.chip{border:1px solid var(--line);background:#fbfdff;border-radius:20px;padding:9px 16px;font-size:.85rem;font-weight:600;color:var(--navy);cursor:pointer;}
.chip:hover{border-color:var(--mid);background:var(--light);}

/* composer */
.composer{border-top:1px solid var(--line);padding:12px 16px 8px;}
.comp-inner{max-width:760px;margin:0 auto;}
.comp-box{display:flex;align-items:flex-end;gap:8px;border:2px solid var(--line);border-radius:14px;padding:8px 10px;background:#fbfdff;}
.comp-box:focus-within{border-color:var(--mid);}
.plus{background:var(--light);color:var(--navy);border:0;width:38px;height:38px;border-radius:10px;font-size:1.4rem;font-weight:800;cursor:pointer;flex:0 0 38px;}
.plus:hover{background:#d3e6f8;}
.comp-ta{flex:1;border:0;background:none;resize:none;font-family:inherit;font-size:1rem;line-height:1.4;max-height:160px;outline:none;padding:8px 4px;}
.send{background:var(--amber);color:var(--navy);border:0;width:38px;height:38px;border-radius:10px;font-size:1.1rem;font-weight:800;cursor:pointer;flex:0 0 38px;}
.send:disabled{opacity:.4;cursor:default;}
.attach-row{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap;}
.attach-pill{background:var(--light);border:1px solid #c3d9ee;color:var(--navy);border-radius:8px;padding:5px 10px;font-size:.8rem;font-weight:700;display:flex;gap:8px;align-items:center;}
.attach-pill b{cursor:pointer;color:#a33;}
.comp-note{text-align:center;color:#8aa6c2;font-size:.75rem;margin-top:6px;}
.tool-panel{max-width:760px;margin:0 auto 8px;display:none;gap:10px;flex-wrap:wrap;align-items:center;background:var(--light);border:1px solid #c3d9ee;border-radius:10px;padding:10px 12px;font-size:.85rem;}
.tool-panel label{font-weight:700;color:var(--navy);}
.tool-panel select,.tool-panel input{padding:7px 9px;border:1px solid var(--line);border-radius:7px;font-family:inherit;font-size:.85rem;}

/* modals */
.mbg{display:none;position:fixed;inset:0;background:#04162acc;z-index:300;align-items:center;justify-content:center;padding:20px;}
.modal{background:#fff;border-radius:12px;max-width:440px;width:100%;padding:26px;max-height:90vh;overflow-y:auto;}
.modal h3{color:var(--navy);margin-bottom:6px;}
.modal p{color:var(--gray);font-size:.92rem;margin-bottom:14px;}
.modal .row{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;}
.in{width:100%;padding:11px;border:1px solid var(--line);border-radius:8px;font-size:1rem;font-family:inherit;margin-bottom:10px;background:#fbfdff;}
.lbl{display:block;font-weight:700;color:var(--navy);margin:8px 0 5px;font-size:.88rem;}
.msg-note{color:var(--mid);font-weight:600;font-size:.88rem;margin-top:8px;}

@media(max-width:820px){
  .main{padding:8px;}

  .sb{position:fixed;z-index:250;left:0;top:0;box-shadow:4px 0 24px #04162a55;}
  .sb.closed{margin-left:-290px;box-shadow:none;}
}

/* thinking hex spinner */
.hexspin{display:inline-flex;align-items:center;gap:10px;color:#185FA5;font-weight:700;font-size:.9rem;}
.hexspin svg{animation:hexrot 2.2s linear infinite;}
.hexspin .core{transform-origin:center;animation:hexpulse 1.1s ease-in-out infinite;}
@keyframes hexrot{to{transform:rotate(360deg);}}
@keyframes hexpulse{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.35);opacity:.65;}}

#sbTools{min-height:340px;}