:root{--sand:#f6efe3;--sand-deep:#ece0cc;--paper:#fffdf8;--ink:#222724;--muted:#7b746a;--line:#e7ddcc;--teal:#0f5c52;--teal-soft:#14766a;--teal-tint:#e3f0ed;--coral:#d9542f;--coral-tint:#fdecea;--gold:#d8a03d;--shadow:0 30px 70px -30px #2a241973;--font-sans:"Segoe UI", "Noto Kufi Arabic", "Cairo", Tahoma, Arial, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font-sans);color:var(--ink);background-color:var(--sand);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 12% 18%,#d8a03d2e,#0000 42%),radial-gradient(circle at 88% 8%,#0f5c5229,#0000 40%),radial-gradient(circle at 70% 92%,#d9542f1a,#0000 45%);background-attachment:fixed}button,select,textarea{font-family:inherit}.page{justify-content:center;align-items:center;min-height:100dvh;padding:20px;display:flex}.chat-shell{background:var(--paper);width:min(980px,100%);height:calc(100dvh - 40px);max-height:960px;box-shadow:var(--shadow);border:1px solid #e7ddcce6;border-radius:28px;flex-direction:column;display:flex;overflow:hidden}.app-header{border-bottom:1px solid var(--line);background:linear-gradient(#fffdf8 0%,#faf5ea 100%);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:16px 22px;display:flex}.brand{align-items:center;gap:12px;min-width:0;display:flex}.brand-mark{color:#fff;background:linear-gradient(135deg, var(--teal) 0%, var(--teal-soft) 60%, var(--gold) 130%);border-radius:15px;flex:none;place-items:center;width:46px;height:46px;font-size:23px;font-weight:800;display:grid;box-shadow:0 10px 20px -10px #0f5c52cc}.brand-text{min-width:0}.brand-text h1{letter-spacing:-.2px;margin:0;font-size:20px;font-weight:800}.brand-text p{color:var(--muted);margin:2px 0 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rise;display:flex}.message-row.is-user{justify-content:flex-end}.is-user+.is-assistant{margin-top:2px}.avatar{color:#fff;background:linear-gradient(135deg, var(--teal), var(--teal-soft));border-radius:12px;flex:none;place-items:center;width:34px;height:34px;font-size:15px;font-weight:800;display:grid;box-shadow:0 6px 12px -8px #0f5c52e6}.bubble{overflow-wrap:anywhere;border-radius:18px;max-width:78%;padding:12px 16px;font-size:15.5px;line-height:1.9}.user-bubble{background:linear-gradient(135deg, var(--teal) 0%, #136f63 100%);color:#fff;border-bottom-left-radius:6px;box-shadow:0 12px 24px -16px #0f5c52e6}.assistant-bubble{color:var(--ink);border:1px solid var(--line);background:#fff;border-bottom-right-radius:6px;box-shadow:0 10px 26px -22px #2a2419b3}.bubble-text{white-space:pre-wrap}.cursor{color:var(--coral);margin-inline-start:2px;animation:1s steps(2,start) infinite blink;display:inline-block}.thinking{color:var(--muted);font-size:13.5px;animation:1.4s ease-in-out infinite 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