/* Vyper — interfaz limpia y convencional, estilo ChatGPT. */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#ffffff;
  --text:#0d0d0d;
  --text-2:#3c3c43;
  --muted:#8e8ea0;
  --line:#e5e5e5;
  --line-2:#d9d9e3;
  --user-bubble:#f4f4f4;
  --hover:#f7f7f8;
  --accent:#7c3aed;
  --accent-grad:linear-gradient(135deg,#6d5ef8,#a855f7,#ec4899);
  --code-bg:#0d0d0d;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --col:768px;
}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;
  -webkit-font-smoothing:antialiased;overflow:hidden}
a{color:var(--accent)}

.app{display:flex;flex-direction:column;height:100dvh}

/* ── topbar ── */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;
  border-bottom:1px solid var(--line);background:var(--bg);flex-shrink:0}
.brand{display:flex;align-items:center;gap:9px}
.brand .logo{border-radius:6px;display:block}
.brand .name{font-size:17px;font-weight:600;letter-spacing:-.2px}
.icon-btn{width:38px;height:38px;border:0;background:transparent;color:var(--text-2);border-radius:9px;
  display:grid;place-items:center;cursor:pointer;transition:background .15s}
.icon-btn:hover{background:var(--hover)}

/* ── scroll/thread ── */
.scroll{flex:1;overflow-y:auto;scroll-behavior:smooth}
.scroll::-webkit-scrollbar{width:8px}
.scroll::-webkit-scrollbar-thumb{background:#d9d9d9;border-radius:8px}
.thread{max-width:var(--col);margin:0 auto;padding:24px 20px 12px}

.row{display:flex;margin-bottom:22px}
.row.bot{gap:14px}
.row.me{justify-content:flex-end}
.avatar{flex-shrink:0;width:30px;height:30px;border-radius:50%;overflow:hidden;margin-top:2px}
.avatar img{width:100%;height:100%;object-fit:cover}
.row.me .bubble{max-width:78%;background:var(--user-bubble);border-radius:22px;padding:10px 16px}
.row.bot .bubble{min-width:0;flex:1;padding-top:3px}

/* markdown */
.md{font-size:16px;line-height:1.75;color:var(--text);word-wrap:break-word;overflow-wrap:anywhere}
.md p{margin:0 0 1em}.md p:last-child{margin-bottom:0}
.row.me .md{line-height:1.6}
.md h1,.md h2,.md h3{margin:1.1em 0 .5em;line-height:1.3;font-weight:600}
.md h1{font-size:1.5em}.md h2{font-size:1.3em}.md h3{font-size:1.1em}
.md ul,.md ol{margin:.5em 0 1em;padding-left:1.5em}
.md li{margin:.35em 0}
.md a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.md strong{font-weight:600}
.md code{font-family:var(--mono);font-size:.875em;background:rgba(0,0,0,.06);padding:.15em .4em;border-radius:5px}
.md pre{margin:1em 0;background:var(--code-bg);border-radius:12px;overflow:hidden}
.md pre .pre-head{display:flex;justify-content:flex-end;padding:6px 10px;background:rgba(255,255,255,.06)}
.md pre .copy{font-family:var(--font);font-size:12px;color:#c5c5d2;background:transparent;border:0;cursor:pointer;
  display:inline-flex;align-items:center;gap:5px;padding:2px 4px;border-radius:5px}
.md pre .copy:hover{color:#fff}
.md pre code{display:block;background:transparent;padding:14px 16px;overflow-x:auto;
  font-size:13.5px;line-height:1.6;color:#e6e6e6}
.md blockquote{border-left:3px solid var(--line-2);margin:.8em 0;padding:.1em 0 .1em 1em;color:var(--text-2)}
.md table{border-collapse:collapse;margin:.8em 0;font-size:14px;display:block;overflow-x:auto}
.md th,.md td{border:1px solid var(--line-2);padding:7px 12px}
.md th{background:var(--hover);font-weight:600}

.caret::after{content:"";display:inline-block;width:9px;height:18px;margin-left:2px;
  background:var(--text);border-radius:2px;vertical-align:-3px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

/* ── welcome ── */
.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:30px 20px;min-height:62vh;max-width:var(--col);margin:0 auto}
.welcome-logo{border-radius:13px;margin-bottom:20px}
.brand-tagline{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.2px;text-align:center;margin:0}
.welcome .brand-tagline{margin:-8px 0 26px}
.auth-card .brand-tagline{margin:-4px 0 16px}
.welcome h1{font-size:clamp(24px,5vw,30px);font-weight:600;letter-spacing:-.4px;margin-bottom:30px}
.suggestions{display:grid;grid-template-columns:1fr 1fr;gap:11px;width:100%;max-width:600px}
.chip{display:flex;flex-direction:column;gap:2px;text-align:left;background:var(--bg);
  border:1px solid var(--line-2);border-radius:14px;padding:13px 15px;cursor:pointer;
  font-family:var(--font);transition:background .15s,border-color .15s}
.chip:hover{background:var(--hover);border-color:#c4c4d0}
.chip .s-title{font-size:14.5px;font-weight:500;color:var(--text)}
.chip .s-sub{font-size:13px;color:var(--muted)}
@media(max-width:540px){.suggestions{grid-template-columns:1fr}.chip .s-sub{display:none}}

/* ── composer ── */
.composer-wrap{padding:8px 20px 12px;flex-shrink:0;max-width:calc(var(--col) + 40px);width:100%;margin:0 auto}
.composer{display:flex;align-items:flex-end;gap:8px;background:var(--bg);
  border:1px solid var(--line-2);border-radius:26px;padding:7px 7px 7px 18px;
  box-shadow:0 2px 8px rgba(0,0,0,.06);transition:border-color .15s,box-shadow .15s}
.composer:focus-within{border-color:#c0c0cc;box-shadow:0 2px 14px rgba(0,0,0,.09)}
#input{flex:1;background:transparent;border:0;outline:0;resize:none;color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.5;max-height:200px;padding:9px 0}
#input::placeholder{color:var(--muted)}
.send-btn{flex-shrink:0;width:38px;height:38px;border-radius:50%;border:0;cursor:pointer;
  background:var(--accent-grad);color:#fff;display:grid;place-items:center;transition:opacity .15s,transform .12s}
.send-btn:hover{transform:scale(1.05)}
.send-btn:disabled{background:#e5e5e5;color:#b0b0b0;cursor:not-allowed;transform:none}
.disclaimer{text-align:center;color:var(--muted);font-size:12px;margin-top:9px}
.disclaimer a{color:var(--muted);text-decoration:underline}

@media(max-width:600px){
  .thread{padding:18px 14px 8px}
  .composer-wrap{padding:6px 12px 10px}
}

/* ── auth / boot / menú de usuario ── */
.hidden{display:none !important}

.boot{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#fff;z-index:50}
.boot img{border-radius:11px;animation:bootpulse 1.3s ease-in-out infinite}
@keyframes bootpulse{0%,100%{opacity:.55;transform:scale(.96)}50%{opacity:1;transform:scale(1)}}

.auth-screen{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:#fff;padding:24px;z-index:40}
.auth-card{width:100%;max-width:380px;display:flex;flex-direction:column;align-items:center;text-align:center}
.auth-logo{border-radius:12px;margin-bottom:18px}
.auth-card h1{font-size:25px;font-weight:600;letter-spacing:-.3px;color:var(--text)}
.auth-sub{font-size:14.5px;color:var(--muted);margin:6px 0 22px}
#authForm{width:100%;display:flex;flex-direction:column;gap:10px}
.field{width:100%;height:50px;padding:0 16px;font-family:var(--font);font-size:15.5px;color:var(--text);
  background:#fff;border:1px solid var(--line-2);border-radius:12px;outline:none;transition:border-color .15s,box-shadow .15s}
.field::placeholder{color:var(--muted)}
.field:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(124,58,237,.12)}
.auth-msg{font-size:13.5px;line-height:1.45;text-align:left;padding:9px 12px;border-radius:10px;margin-top:2px}
.auth-msg.err{background:#fdecec;color:#c0392b}
.auth-msg.ok{background:#eafaf0;color:#1e8a4c}
.auth-btn{width:100%;height:50px;margin-top:4px;border:0;border-radius:12px;cursor:pointer;
  background:var(--accent-grad);color:#fff;font-family:var(--font);font-size:15.5px;font-weight:600;
  transition:opacity .15s,transform .1s}
.auth-btn:hover{opacity:.93}
.auth-btn:active{transform:scale(.99)}
.auth-btn:disabled{opacity:.6;cursor:default}
.auth-link{background:none;border:0;color:var(--muted);font-family:var(--font);font-size:14px;cursor:pointer;padding:4px}
.auth-link:hover{color:var(--text)}
.auth-link.strong{color:var(--accent);font-weight:600}
.auth-link.strong:hover{text-decoration:underline}
#forgotBtn{margin-top:14px}
.auth-toggle{margin-top:6px;font-size:14px;color:var(--muted)}
.auth-foot{position:absolute;bottom:20px;font-size:12px;color:var(--muted)}
.auth-foot a{color:var(--muted);text-decoration:underline}

.top-actions{display:flex;align-items:center;gap:8px}
.train-btn{display:inline-flex;align-items:center;gap:7px;font-family:var(--font);font-size:13.5px;font-weight:600;
  color:var(--accent);background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.2);border-radius:100px;
  padding:7px 14px;cursor:pointer;transition:background .15s}
.train-btn:hover{background:rgba(124,58,237,.15)}
.train-btn svg{flex-shrink:0}
@media(max-width:560px){.train-btn .lbl{display:none}.train-btn{padding:8px 10px}}
.user-wrap{position:relative}
.user-chip{width:34px;height:34px;border-radius:50%;border:0;cursor:pointer;color:#fff;font-weight:600;
  font-size:15px;background:var(--accent-grad);display:grid;place-items:center}
.user-menu{position:absolute;top:44px;right:0;width:230px;background:#fff;border:1px solid var(--line-2);
  border-radius:13px;box-shadow:0 8px 28px rgba(0,0,0,.14);padding:6px;z-index:30}
.user-menu .u-name{padding:9px 12px 1px;font-size:14px;font-weight:600;color:var(--text)}
.user-menu .u-email{padding:0 12px 9px;font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-menu .u-logout{width:100%;text-align:left;margin-top:5px;padding:10px 12px;border:0;background:none;cursor:pointer;
  font-family:var(--font);font-size:14px;color:var(--text);border-radius:8px}
.user-menu .u-logout:hover{background:var(--hover)}

.divider{display:flex;align-items:center;gap:12px;width:100%;margin:16px 0 2px;color:var(--muted);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.google-btn{width:100%;height:50px;display:flex;align-items:center;justify-content:center;gap:10px;
  background:#fff;border:1px solid var(--line-2);border-radius:12px;cursor:pointer;
  font-family:var(--font);font-size:15px;font-weight:500;color:var(--text);transition:background .15s,border-color .15s}
.google-btn:hover{background:var(--hover);border-color:#c4c4d0}
.google-btn svg{flex-shrink:0}
#verifyDone{margin-top:8px}
#verifyResend{margin-top:14px}
#verifyLogout{margin-top:4px}