:root{
    --brand:#2c8971;
    --brand-dark:#1f6b58;
    --brand-deep:#15463a;
    --bg:#eef2f1;
    --user:#2c8971;
    --bot:#ffffff;
    --text:#1f2a28;
    --muted:#6b7c78;
    --line:#dde5e3;
    --shadow:0 2px 10px rgba(20,70,58,.08);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
}
.app{
    max-width:780px;
    margin:0 auto;
    height:100dvh;
    display:flex;
    flex-direction:column;
    background:var(--bg);
}

/* Topbar */
.topbar{
    display:flex;align-items:center;gap:14px;
    padding:14px 18px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
    color:#fff;
    box-shadow:var(--shadow);
    z-index:2;
}
.topbar .logo{height:34px;width:auto;filter:brightness(0) invert(1);}
.topbar-text{display:flex;flex-direction:column;line-height:1.2}
.topbar-text strong{font-size:16px}
.topbar-text span{font-size:12.5px;opacity:.85}

/* Chat */
.chat{
    flex:1;
    overflow-y:auto;
    padding:20px 16px;
    display:flex;flex-direction:column;gap:14px;
}
.msg{display:flex}
.msg.user{justify-content:flex-end}
.bubble{
    max-width:84%;
    padding:12px 15px;
    border-radius:16px;
    font-size:15px;line-height:1.5;
    box-shadow:var(--shadow);
    word-wrap:break-word;
    white-space:normal;
}
.msg.bot .bubble{background:var(--bot);border:1px solid var(--line);border-top-left-radius:4px}
.msg.user .bubble{background:var(--user);color:#fff;border-top-right-radius:4px}
.bubble b,.bubble strong{font-weight:600}
.bubble ul{margin:8px 0;padding-left:20px}
.bubble li{margin:3px 0}
.bubble p{margin:0 0 8px}
.bubble p:last-child{margin-bottom:0}
.bubble sup{color:var(--brand-dark);font-weight:600}

/* Sources */
.sources{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.sources .src-title{font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.sources a,.sources span.src{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:var(--brand-dark);text-decoration:none;
    background:#eaf4f0;border:1px solid #cfe6dd;border-radius:8px;
    padding:6px 10px;line-height:1.3;
}
.sources a:hover{background:#dcefe5}
.sources a::before{content:"📄"}

/* typing */
.typing .bubble{display:inline-flex;gap:4px;padding:14px 16px}
.typing .dot{width:7px;height:7px;border-radius:50%;background:var(--muted);opacity:.5;animation:blink 1.2s infinite}
.typing .dot:nth-child(2){animation-delay:.2s}
.typing .dot:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.think-label{margin-left:8px;font-size:13px;color:var(--muted);vertical-align:middle}

/* Suggestions */
.suggestions{display:flex;gap:8px;padding:0 16px 8px;flex-wrap:wrap}
.chip{
    background:#fff;border:1px solid var(--line);color:var(--brand-dark);
    border-radius:18px;padding:8px 13px;font-size:13px;cursor:pointer;
    transition:.15s;
}
.chip:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* Composer */
.composer{
    padding:10px 14px;background:#fff;border-top:1px solid var(--line);
}
.composer-main{display:flex;align-items:flex-end;gap:8px}
/* Barra de gravação (estilo Planum) */
.recbar{display:none;align-items:center;gap:12px}
.composer.recording .composer-main{display:none}
.composer.recording .recbar{display:flex}
.rec-btn{
    flex:none;width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;color:#fff;transition:.15s;
}
.rec-cancel{background:#e23b3b}
.rec-cancel:hover{background:#c92f2f}
.rec-confirm{background:var(--brand)}
.rec-confirm:hover{background:var(--brand-dark)}
.rec-status{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--text);font-size:14px}
.rec-status #recTime{font-variant-numeric:tabular-nums;font-weight:600}
.rec-dot{width:10px;height:10px;border-radius:50%;background:#e23b3b;animation:blink 1.2s infinite}
.recbar.transcribing .rec-dot{background:var(--brand);animation:none}
.recbar.transcribing .rec-btn{opacity:.45;pointer-events:none}
.composer textarea{
    flex:1;border:1px solid var(--line);border-radius:22px;
    padding:11px 16px;font-size:15px;font-family:inherit;resize:none;
    max-height:120px;outline:none;line-height:1.4;
}
.composer textarea:focus{border-color:var(--brand)}
.mic,.send{
    flex:none;width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;color:#fff;transition:.15s;
}
.send{background:var(--brand)}
.send:hover{background:var(--brand-dark)}
.mic{background:#eef2f1;color:var(--brand-dark)}
.mic:hover{background:#e1ebe8}
.mic.recording{background:#e23b3b;color:#fff;animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(226,59,59,.5)}70%{box-shadow:0 0 0 10px rgba(226,59,59,0)}100%{box-shadow:0 0 0 0 rgba(226,59,59,0)}}
button:disabled{opacity:.5;cursor:not-allowed}

.disclaimer{
    margin:0;padding:8px 16px 12px;text-align:center;
    font-size:11.5px;color:var(--muted);background:#fff;
}
.disclaimer a{color:var(--brand-dark)}

@media(max-width:600px){
    .bubble{max-width:90%}
    .topbar-text span{display:none}
}