:root{--dd-navy: #104160;--dd-accent: #469CC4;--dd-slate: #637B8D;--dd-bg: #F6F9FC;--dd-card: #FFFFFF;--dd-border: #E6EEF5;--dd-text: #0C2333;--dd-muted: #5B7283}*{box-sizing:border-box}html,body{height:100%;overflow:hidden}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--dd-text);background:radial-gradient(900px 500px at 20% 0%,rgba(70,156,196,.18),transparent 60%),radial-gradient(900px 500px at 80% 10%,rgba(16,65,96,.12),transparent 55%),var(--dd-bg);overflow:hidden}.dd-app{height:100vh;display:grid;grid-template-rows:auto 1fr auto;min-height:0;overflow:hidden}.dd-header{border-bottom:1px solid var(--dd-border);background:#ffffffb3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.dd-brand{max-width:980px;margin:0 auto;padding:16px 18px;display:flex;align-items:center;gap:12px}.dd-logo{width:44px;height:44px;border-radius:12px;background:linear-gradient(180deg,#469cc440,#469cc40d),linear-gradient(135deg,#1041602e,#10416005);border:1px solid var(--dd-border);box-shadow:0 10px 30px #1041601a}.dd-title{font-weight:800;letter-spacing:.04em;color:var(--dd-navy);font-size:18px;line-height:1.1}.dd-subtitle{font-size:13px;color:var(--dd-muted);margin-top:2px}.dd-main{max-width:980px;margin:0 auto;width:100%;padding:18px;display:flex;min-height:0;overflow:hidden}.dd-footer{border-top:1px solid var(--dd-border);color:var(--dd-muted);font-size:12px;padding:12px 18px;text-align:center;background:#ffffffa6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.dd-chatCard{width:100%;background:var(--dd-card);border:1px solid var(--dd-border);border-radius:18px;box-shadow:0 18px 45px #1041601a;overflow:hidden;display:grid;grid-template-rows:auto 1fr auto;height:100%;min-height:0}.dd-chatHeader{padding:12px 14px;border-bottom:1px solid var(--dd-border);background:linear-gradient(90deg,#1041600f,#469cc414)}.dd-headerRow{display:flex;align-items:center;justify-content:space-between;gap:12px}.dd-pill{display:inline-block;padding:6px 10px;border-radius:999px;border:1px solid rgba(70,156,196,.35);color:var(--dd-navy);font-weight:700;font-size:12px;background:#469cc41a}.dd-newChatBtn{border:1px solid rgba(16,65,96,.25);background:transparent;color:var(--dd-navy);padding:6px 12px;border-radius:999px;font-weight:700;font-size:12px;cursor:pointer}.dd-newChatBtn:hover{background:#469cc426;border-color:#469cc499}.dd-chatBody{padding:16px;background:radial-gradient(600px 220px at 15% 0%,rgba(70,156,196,.12),transparent 65%),radial-gradient(600px 220px at 85% 0%,rgba(16,65,96,.1),transparent 65%);overflow:auto;min-height:0}.dd-msg{display:flex;margin:10px 0}.dd-msgBot{justify-content:flex-start}.dd-msgUser{justify-content:flex-end}.dd-msgBubble{max-width:72%;padding:10px 12px;border-radius:14px;border:1px solid var(--dd-border);background:#fff;color:var(--dd-text);box-shadow:0 8px 20px #10416014;line-height:1.35;font-size:14px}.dd-msgUser .dd-msgBubble{background:linear-gradient(180deg,#469cc438,#469cc41a);border:1px solid rgba(70,156,196,.35);color:var(--dd-navy)}.dd-line{white-space:pre-wrap;word-break:break-word}.dd-chatComposer{display:grid;grid-template-columns:1fr auto;gap:10px;padding:12px;border-top:1px solid var(--dd-border);background:#ffffffe6;min-height:0}.dd-input{height:42px;padding:0 12px;border-radius:12px;border:1px solid var(--dd-border);outline:none;font-size:14px}.dd-textarea{resize:none;padding:10px 12px;line-height:1.35;height:42px}.dd-input:focus{border-color:#469cc499;box-shadow:0 0 0 4px #469cc429}.dd-button{height:42px;padding:0 14px;border-radius:12px;border:1px solid rgba(16,65,96,.25);background:linear-gradient(180deg,#104160f2,#104160d9);color:#fff;font-weight:700;cursor:pointer}.dd-button:disabled{opacity:.55;cursor:not-allowed}.dd-typing{display:inline-flex;align-items:center;gap:10px}.dd-typingLabel{color:var(--dd-muted);font-weight:600;font-size:13px}.dd-dots{display:inline-flex;gap:5px;align-items:center}.dd-dot{width:6px;height:6px;border-radius:999px;background:#10416073;animation:dd-bounce 1.05s infinite ease-in-out}.dd-dot:nth-child(2){animation-delay:.12s}.dd-dot:nth-child(3){animation-delay:.24s}@keyframes dd-bounce{0%,80%,to{transform:translateY(0);opacity:.55}40%{transform:translateY(-4px);opacity:.95}}@media(max-width:720px){.dd-brand{padding:12px 14px}.dd-main{padding:12px}.dd-chatCard{border-radius:14px}.dd-chatComposer{grid-template-columns:1fr;gap:10px}.dd-button{width:100%}.dd-msgBubble{max-width:92%}}@media(max-width:420px){.dd-logo{width:40px;height:40px;border-radius:10px}.dd-title{font-size:16px}.dd-subtitle{font-size:12px}.dd-chatBody{padding:12px}}@supports (height: 100dvh){.dd-app{height:100dvh}}