:root{color-scheme:dark;--bg:#0f172a;--panel:#111827;--panel-soft:#1f2937;--text:#f8fafc;--muted:#94a3b8;--primary:#8b5cf6;--accent:#38bdf8;--danger:#fb7185;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{width:min(100%,720px);min-height:100dvh;margin:0 auto;padding:16px;display:flex;flex-direction:column;gap:16px}.bottom-input,.card,.image-card,.message,.top-bar{background:rgba(17,24,39,.92);border:1px solid rgba(148,163,184,.18);border-radius:20px;box-shadow:0 18px 40px rgba(2,6,23,.28)}.top-bar{padding:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.title{margin:0;font-size:22px;letter-spacing:-.03em}.subtitle{color:var(--muted);margin:6px 0 0;font-size:14px}.grid{display:grid;grid-template-columns:1fr;grid-gap:12px;gap:12px}.card{padding:16px}.card h2,.card h3{margin:0 0 8px}.card p{color:var(--muted);margin:0 0 14px;line-height:1.55}.actions{display:flex;gap:10px;flex-wrap:wrap}.btn{border:0;border-radius:999px;padding:10px 14px;background:var(--panel-soft);color:var(--text);display:inline-flex;align-items:center;justify-content:center;min-height:40px}.btn.primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:white}.btn.danger{background:rgba(251,113,133,.14);color:#fecdd3}.chat-layout{padding-bottom:96px}.message-list{display:flex;flex-direction:column;gap:12px}.message{padding:14px;line-height:1.65}.message.user{margin-left:28px;background:rgba(59,130,246,.14)}.message.assistant{margin-right:28px}.message .role{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.bottom-input{position:fixed;left:50%;bottom:12px;transform:translateX(-50%);width:min(calc(100% - 24px),720px);padding:10px;display:flex;gap:8px;align-items:flex-end}.bottom-input textarea{flex:1 1;resize:none;min-height:44px;max-height:120px;border:0;outline:0;border-radius:14px;padding:12px;color:var(--text);background:var(--panel-soft)}.switch{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}.switch input{width:18px;height:18px;accent-color:var(--primary)}.image-card{padding:12px;display:grid;grid-gap:10px;gap:10px}.image-placeholder{aspect-ratio:1/1;border-radius:16px;background:linear-gradient(135deg,rgba(139,92,246,.24),rgba(56,189,248,.14));display:grid;place-items:center;color:var(--muted);text-align:center;padding:16px}.form{display:grid;grid-gap:12px;gap:12px}.form label{display:grid;grid-gap:6px;gap:6px;color:var(--muted)}.form input,.form select,.form textarea{border:1px solid rgba(148,163,184,.18);background:var(--panel-soft);color:var(--text);border-radius:14px;padding:12px;width:100%}@media (min-width:760px){.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}}.danger-text{color:#fecdd3;border-color:rgba(251,113,133,.35)}button:disabled{opacity:.55;cursor:not-allowed}