:root {
  --bg: #f4f6fb; --panel: #ffffff; --panel2: #eef2fa; --fg: #13203d; --muted: #5b6785; --line: #dbe2f0;
  --navy: #0f2150; --accent: #1d7fd8; --accent-soft: #e2f0fd; --gold: #e3a92b; --ok: #1f8a5b; --bad: #c0392b;
  --maria: #0f2150; --maria-fg: #ffffff; --shadow: 0 8px 30px rgba(15, 33, 80, .10);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0a1226; --panel: #111c38; --panel2: #16244a; --fg: #e8eefc; --muted: #9aa8c8; --line: #24345e;
    --navy: #0a1636; --accent: #4fb3ff; --accent-soft: #15325a; --gold: #f2bf4a; --ok: #3cc488; --bad: #ff7a6b;
    --maria: #2a4fa3; --maria-fg: #ffffff; --shadow: 0 8px 30px rgba(0, 0, 0, .35); color-scheme: dark; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.55 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; }
h1, h2, h3, .brand { font-family: "Space Grotesk", Inter, system-ui, sans-serif; text-wrap: balance; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--accent); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- login */
.login { min-height: 100%; display: grid; place-items: center; padding: 32px max(16px, env(safe-area-inset-left, 0px)); }
.card { width: min(440px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 22px;
  box-shadow: var(--shadow); padding: 28px; display: grid; gap: 16px; text-align: center; }
.card img.portrait { width: 168px; height: 168px; margin: 0 auto; border-radius: 50%; }
.card h1 { margin: 0; font-size: 1.5rem; }
.card p { margin: 0; color: var(--muted); }
.field { display: grid; gap: 6px; text-align: left; }
.field label { font-size: .82rem; font-weight: 600; letter-spacing: .02em; color: var(--muted); }
.field input { padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel2); }
.field input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn { padding: 12px 18px; border-radius: 12px; border: 0; background: var(--accent); color: #fff; font-weight: 600; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--line); }
.btn:disabled { opacity: .55; cursor: default; }
.msg { font-size: .9rem; min-height: 1.2em; }
.msg.bad { color: var(--bad); } .msg.ok { color: var(--ok); }
.qr { background: #fff; border-radius: 12px; padding: 10px; width: 210px; margin: 0 auto; }
.qr svg { width: 100%; height: auto; display: block; }
.secret { font-family: ui-monospace, Menlo, monospace; font-size: .85rem; word-break: break-all; background: var(--panel2);
  padding: 8px 10px; border-radius: 8px; }
.steps { text-align: left; color: var(--muted); font-size: .9rem; margin: 0; padding-left: 1.2em; }

/* ---------- app */
.app { display: grid; grid-template-columns: 290px 1fr; height: 100vh; height: 100dvh; }
.side { background: var(--navy); color: #dfe8ff; display: flex; flex-direction: column; min-height: 0; }
.side .who { display: flex; gap: 12px; align-items: center; padding: 18px 16px 12px; }
.side .who img { width: 54px; height: 54px; border-radius: 50%; background: #fff; }
.side .who b { font-family: "Space Grotesk", sans-serif; font-size: 1.15rem; color: #fff; display: block; }
.side .who span { font-size: .8rem; opacity: .75; }
.side .new { margin: 4px 16px 10px; }
.side h3 { margin: 14px 16px 6px; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; opacity: .6; }
.side .list { overflow: auto; flex: 1; min-height: 0; padding: 0 8px 8px; }
.side .item { display: block; width: 100%; text-align: left; background: transparent; border: 0; color: inherit;
  padding: 9px 10px; border-radius: 10px; font-size: .88rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.side .item:hover, .side .item.on { background: rgba(255, 255, 255, .09); }
.side .item small { opacity: .55; margin-right: 6px; text-transform: uppercase; font-size: .66rem; letter-spacing: .08em; }
.side .foot { padding: 10px 16px 16px; display: grid; gap: 8px; border-top: 1px solid rgba(255, 255, 255, .1); }
.side .foot button { background: rgba(255, 255, 255, .08); color: #fff; border: 0; padding: 9px 12px; border-radius: 10px; text-align: left; }
.side .snap { font-size: .72rem; opacity: .55; }

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.hero { display: flex; gap: 18px; align-items: center; padding: 16px max(16px, 3vw); border-bottom: 1px solid var(--line);
  background: var(--panel); }
.hero img { width: 92px; height: 92px; border-radius: 50%; flex: none; box-shadow: 0 0 0 4px var(--accent-soft); }
.hero h1 { margin: 0; font-size: 1.35rem; }
.hero p { margin: 2px 0 0; color: var(--muted); font-size: .92rem; }
.hero .status { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--ok); font-weight: 600; }
.hero .status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.modes { display: flex; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.modes button { border: 1px solid var(--line); background: var(--panel2); padding: 8px 14px; border-radius: 999px; font-weight: 600; font-size: .88rem; }
.modes button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.menu { display: none; }

.chat { flex: 1; overflow: auto; min-height: 0; padding: 24px max(16px, 4vw) 12px; }
.inner { max-width: 940px; margin: 0 auto; display: grid; gap: 18px; }
.welcome { display: grid; gap: 14px; }
.welcome h2 { margin: 0; font-size: 1.6rem; }
.welcome p { margin: 0; color: var(--muted); max-width: 65ch; }
.chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr)); gap: 10px; }
.chips button { text-align: left; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px;
  box-shadow: var(--shadow); }
.chips button b { display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 2px; }
.row { display: flex; gap: 12px; align-items: flex-start; }
.row.maria { justify-content: flex-end; }
.row img.av { width: 40px; height: 40px; border-radius: 50%; flex: none; margin-top: 2px; }
.bubble { min-width: 0; max-width: 100%; padding: 14px 18px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line);
  box-shadow: var(--shadow); overflow-wrap: anywhere; }
.row.maria .bubble { background: var(--maria); color: var(--maria-fg); border-color: transparent; max-width: 80%; white-space: pre-wrap; }
.bubble h1, .bubble h2, .bubble h3 { font-size: 1.05rem; margin: 12px 0 6px; }
.bubble p { margin: 0 0 10px; } .bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { margin: 0 0 10px; padding-left: 1.3em; }
.bubble code { font-family: ui-monospace, Menlo, monospace; font-size: .88em; background: var(--panel2); padding: 1px 5px; border-radius: 5px; }
.bubble pre { background: var(--panel2); padding: 12px; border-radius: 10px; overflow-x: auto; }
.bubble pre code { background: none; padding: 0; }
.bubble .tw { overflow-x: auto; margin: 0 0 10px; }
.bubble table { border-collapse: collapse; font-size: .9rem; }
.bubble th, .bubble td { border: 1px solid var(--line); padding: 6px 9px; text-align: left; vertical-align: top; }
.bubble a.file { display: inline-flex; gap: 4px; align-items: center; background: var(--accent-soft); padding: 1px 8px; border-radius: 6px;
  text-decoration: none; font-weight: 600; font-size: .9em; }
.bubble a.file::before { content: "⬇"; font-size: .85em; }
.tools { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.tools span { font-size: .75rem; color: var(--muted); background: var(--panel2); padding: 3px 8px; border-radius: 999px; }
.actions { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.actions button { font-size: .78rem; background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; color: var(--muted); }
.typing { display: inline-flex; gap: 4px; }
.typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: b 1s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
@keyframes b { 0%, 80%, 100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }
@media (prefers-reduced-motion: reduce) { .typing i { animation: none; } }

.composer { border-top: 1px solid var(--line); background: var(--panel); padding: 12px max(16px, 4vw) max(14px, env(safe-area-inset-bottom, 0px)); }
.composer form { max-width: 940px; margin: 0 auto; display: flex; gap: 10px; align-items: flex-end; }
.composer textarea { flex: 1; min-width: 0; resize: none; min-height: 58px; max-height: 40vh; padding: 14px 16px; border-radius: 16px;
  border: 1px solid var(--line); background: var(--panel2); font-size: 1rem; }
.composer .btn { height: 58px; padding: 0 22px; border-radius: 16px; }
.hint { max-width: 940px; margin: 6px auto 0; font-size: .75rem; color: var(--muted); }

dialog { border: 1px solid var(--line); border-radius: 18px; background: var(--panel); color: var(--fg); width: min(640px, calc(100% - 32px));
  box-shadow: var(--shadow); padding: 22px; }
dialog::backdrop { background: rgba(5, 12, 30, .55); }
dialog h2 { margin: 0 0 8px; }
dialog textarea { width: 100%; min-height: 160px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel2); padding: 12px; }
dialog .files { max-height: 60vh; overflow: auto; display: grid; gap: 4px; margin: 8px 0 14px; }
dialog .files a { padding: 7px 10px; border-radius: 8px; background: var(--panel2); text-decoration: none; overflow-wrap: anywhere; font-size: .9rem; }
dialog .bar { display: flex; gap: 10px; justify-content: flex-end; margin-top: 12px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .side { position: fixed; inset: 0 auto 0 0; width: min(300px, 86vw); z-index: 20; transform: translateX(-102%); transition: transform .2s; }
  .side.open { transform: none; box-shadow: var(--shadow); }
  .menu { display: inline-flex; border: 1px solid var(--line); background: var(--panel2); border-radius: 10px; padding: 8px 12px; }
  .hero { flex-wrap: wrap; gap: 12px; }
  .hero img { width: 64px; height: 64px; }
  .modes { margin-left: 0; width: 100%; }
  .row.maria .bubble { max-width: 92%; }
}