:root{color-scheme:dark;font-family:IBM Plex Sans,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--bg: #141414;--bg-soft: #1a1917;--surface: #1f1d1a;--surface-2: #28241f;--surface-3: #302a23;--border: #40392f;--text: #f2ede4;--muted: #b8ad9a;--accent: #cb8f43;--accent-soft: #5f4828;--ok: #88ab7f;--danger: #cf7b63}*{box-sizing:border-box}html,body,#root{min-width:320px;min-height:100%;margin:0;background:var(--bg);color:var(--text)}body{min-height:100vh}button,input,select,textarea{font:inherit}button,input,select,textarea{border:1px solid var(--border);border-radius:10px}button{background:var(--surface-2);color:var(--text);cursor:pointer;transition:background-color .16s ease,border-color .16s ease,color .16s ease}button:hover{background:var(--surface-3)}button:disabled{opacity:.55;cursor:not-allowed}input,select,textarea{width:100%;background:var(--surface);color:var(--text)}input{min-height:46px;padding:.78rem .92rem}select{min-height:46px;padding:.7rem .92rem}textarea{resize:vertical;min-height:132px;padding:.92rem 1rem}button:focus-visible,input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:2px}.boot-screen{min-height:100vh;display:grid;place-items:center;color:var(--muted)}.auth-shell{min-height:100vh;display:grid;grid-template-columns:252px minmax(0,1fr)}.auth-rail{padding:28px 22px;border-right:1px solid var(--border);background:#171715;display:grid;align-content:start;gap:18px}.rail-block{display:grid;gap:8px}.rail-label,.field-label,.message-meta{margin:0;color:var(--muted);font-size:.85rem}.rail-copy{margin:0;color:var(--muted)}.auth-main{display:grid;place-items:center;padding:32px}.auth-card{width:min(460px,100%);padding:24px;border:1px solid var(--border);border-radius:12px;background:var(--surface);display:grid;gap:18px}.auth-copy h1{margin:0 0 6px;font-size:1.8rem}.auth-copy p{margin:0;color:var(--muted)}.auth-form{display:grid;gap:10px}.app-shell{min-height:100vh;display:grid;grid-template-rows:auto 1fr}.app-header{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 24px;border-bottom:1px solid var(--border);background:#141414f0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:10}.header-copy{display:grid;gap:2px}.header-copy strong{font-size:1rem}.header-copy span,.session-chip,.composer-hints,.info-card p,.roadmap-item p{color:var(--muted)}.header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.plain-button,.session-chip{min-height:40px;padding:0 14px;display:inline-flex;align-items:center}.plain-button.is-active{border-color:var(--accent);background:var(--accent-soft)}.session-chip{border:1px solid var(--border);border-radius:10px;background:var(--bg-soft)}.chat-page{padding:24px}.chat-frame{width:min(1380px,100%);margin:0 auto;border:1px solid var(--border);border-radius:14px;background:var(--surface);min-height:calc(100vh - 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