:root{--bg: #0b0f14;--card: rgba(10, 14, 18, .68);--card-strong: rgba(10, 14, 18, .92);--border: rgba(255, 255, 255, .08);--text: #e6f1ff;--muted: #9fb3c8;--accent: #0ff;--accent-2: #14ffec;--shadow: 0 10px 40px rgba(0, 255, 255, .12);--radius: 14px}*{box-sizing:border-box}html,body,#app{height:100%}html,body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}#app{position:relative;z-index:1}#bg{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}#bg-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.9) brightness(.75) contrast(1.05)}.bg-mask{position:absolute;inset:0;z-index:1;background:radial-gradient(1200px 800px at 50% 40%,rgba(0,255,240,.08),transparent 55%),linear-gradient(180deg,#070a0d8c,#070a0dd9 70%,#070a0df2);pointer-events:none}.container{position:relative;min-height:100vh;display:grid;place-items:center;padding:24px}.glass{background:var(--card);backdrop-filter:blur(18px) saturate(120%);-webkit-backdrop-filter:blur(18px) saturate(120%);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:12px;background:linear-gradient(180deg,#ffffff0a,#ffffff05);color:var(--text);padding:10px 14px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:transform .06s ease,border-color .2s ease}.btn:hover{border-color:#00ffff59}.btn:active{transform:translateY(1px)}.btn.primary{border-color:#00ffff80;box-shadow:inset 0 0 0 1px #00ffff40,0 0 20px #00ffff14}.input{background:var(--card-strong);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:12px 14px;width:100%}.link{color:var(--accent);text-decoration:none}.link:hover{text-decoration:underline}.loading-overlay{position:fixed;inset:0;display:grid;place-items:center;z-index:20;background:radial-gradient(600px 420px at 50% 50%,#00ffff12,#0000008c);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.loader{width:72px;height:72px;border-radius:50%;border:3px solid rgba(255,255,255,.12);border-top-color:var(--accent);animation:spin 1s linear infinite;box-shadow:0 0 24px #00ffff40;margin-inline:auto}@keyframes spin{to{transform:rotate(360deg)}}.loader-text{margin-top:16px;color:var(--muted);text-align:center;letter-spacing:.3px}.chat-card{width:min(900px,92vw);height:min(72vh,720px);display:grid;grid-template-rows:1fr auto;overflow:hidden}.responses{overflow-y:auto;padding:20px;scroll-behavior:smooth}.msg{display:grid;gap:6px;padding:12px 14px;border-radius:12px;margin:8px 0;max-width:85%;border:1px solid var(--border)}.msg.user{justify-self:end;background:#00000059}.msg.assistant{justify-self:start;background:#00ffff0f;box-shadow:inset 0 0 0 1px #00ffff14}.msg .meta{font-size:11px;color:var(--muted)}.msg .content{line-height:1.5;white-space:pre-wrap;word-break:break-word}.msg img{display:block;max-width:min(520px,70vw);height:auto;border-radius:10px;border:1px solid var(--border);background:#ffffff05}.msg .file{display:inline-flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;background:#ffffff08;border:1px dashed rgba(255,255,255,.12)}.footer{padding:14px;border-top:1px solid var(--border);display:grid;grid-template-columns:1fr auto;gap:10px;background:linear-gradient(180deg,#0000001a,#ffffff05)}.small{font-size:12px;color:var(--muted)}@media (max-width: 640px){.chat-card{height:min(78vh,780px)}.msg{max-width:92%}}.top-actions{position:fixed;top:16px;right:16px;z-index:2;display:flex;gap:8px}.auth-panel{position:fixed;top:60px;right:16px;width:min(420px,92vw);padding:14px;z-index:3}