:root{
--bg:#eef3f8;--white:#fff;--dark:#061b33;--dark2:#0b315b;
--blue:#1687ff;--green:#10b981;--text:#17212b;--muted:#718096;
--border:#dce5ee
}
*{box-sizing:border-box}
body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text);height:100vh;overflow:hidden}
.app{width:100vw;height:100vh;display:flex;flex-direction:column}
.titlebar{height:42px;background:#fff;border-bottom:1px solid #dbe3eb;display:flex;align-items:center;justify-content:space-between;padding:0 15px;direction:ltr}
.brand{display:flex;align-items:center;gap:9px;font-weight:bold;font-size:15px}
.logo{width:27px;height:27px;border-radius:8px;background:#10b981;color:#fff;display:grid;place-items:center;font-weight:bold}
.window-controls{display:flex;gap:20px;font-size:17px;color:#333}
.main{flex:1;min-height:0;display:flex;direction:ltr}
.sidebar{width:285px;background:linear-gradient(160deg,#061b33,#0b315b);color:#fff;padding:18px 15px;display:flex;flex-direction:column;direction:rtl}
.new-chat{background:linear-gradient(90deg,#1687ff,#10b981);border:0;color:#fff;padding:14px;border-radius:13px;font-size:16px;font-weight:bold;cursor:pointer}
.section-title{color:#d9e6f3;font-weight:bold;margin:24px 5px 10px}
.chat{padding:13px;margin-bottom:7px;border-radius:12px;cursor:pointer;background:rgba(255,255,255,.055)}
.chat.active{background:linear-gradient(90deg,rgba(24,139,255,.65),rgba(14,105,193,.35))}
.chat small{color:#b8c8d9;display:block;margin-top:5px}
.sidebar-bottom{margin-top:auto;display:grid;gap:8px}
.side-btn{padding:12px;border-radius:10px;background:rgba(255,255,255,.06);cursor:pointer}
.center{flex:1;min-width:0;background:#fff;display:flex;flex-direction:column;direction:rtl}
.chat-head{height:78px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px}
.chat-title{display:flex;align-items:center;gap:12px}
.big-logo{width:48px;height:48px;border-radius:14px;background:#10b981;color:#fff;display:grid;place-items:center;font-size:25px;font-weight:bold}
.chat-title h2{margin:0;font-size:21px}
.chat-title p{margin:4px 0 0;color:var(--muted);font-size:13px}
.status{background:#e6f9f0;color:#08784d;border-radius:20px;padding:9px 15px;font-weight:bold}
.messages{flex:1;overflow:auto;padding:35px 55px;background:linear-gradient(180deg,#fff,#f8fbfd)}
.welcome{text-align:center;max-width:700px;margin:55px auto}
.welcome-icon{width:70px;height:70px;border-radius:20px;background:#10b981;color:#fff;display:grid;place-items:center;font-size:35px;margin:auto}
.welcome h1{margin:18px 0 8px}
.welcome p{color:var(--muted);line-height:1.8}
.cards{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:25px}
.cards div{background:#f2f6fa;border:1px solid #e2e9ef;border-radius:12px;padding:12px}
.user-msg{max-width:650px;margin:0 0 22px auto;background:#dff0ff;border:1px solid #c8e5fb;padding:15px 18px;border-radius:18px 18px 5px 18px;line-height:1.8}
.ai-row{display:flex;gap:12px;max-width:850px;margin-bottom:22px}
.ai-icon{flex:0 0 40px;width:40px;height:40px;border-radius:12px;background:#10b981;color:#fff;display:grid;place-items:center;font-weight:bold}
.ai-msg{background:#f2f5f8;border:1px solid #e2e9ef;padding:19px 22px;border-radius:18px 18px 18px 5px;line-height:1.9}
.error{color:#b00020}
.input-area{padding:16px 35px 20px;border-top:1px solid var(--border);background:#fff}
.composer{border:1px solid #cfdbe7;border-radius:17px;display:flex;align-items:flex-end;gap:10px;padding:10px;box-shadow:0 5px 18px rgba(0,0,0,.04)}
textarea{flex:1;border:0;outline:0;resize:none;min-height:46px;max-height:150px;font:16px Tahoma;padding:12px}
.icon-btn{border:0;background:#f1f5f9;width:42px;height:42px;border-radius:12px;cursor:pointer;font-size:18px}
.send{border:0;background:linear-gradient(90deg,#1687ff,#10b981);color:#fff;font-weight:bold;padding:13px 25px;border-radius:12px;cursor:pointer;font-size:16px}
.send:disabled{opacity:.55}
.footer{font-size:12px;color:#718096;display:flex;justify-content:space-between;margin-top:8px}
.rightbar{width:285px;background:linear-gradient(165deg,#03162c,#07345d);color:#fff;padding:28px 18px;direction:rtl}
.api-logo{text-align:center;font-size:55px;margin-bottom:4px}
.rightbar h2{text-align:center;margin:0;font-size:27px}
.rightbar>p{text-align:center;color:#c5d7e9;margin:6px 0 25px}
.balance{border:1px solid #1d9dff;border-radius:18px;padding:18px;background:linear-gradient(135deg,rgba(0,132,255,.22),rgba(0,255,170,.08))}
.balance-title{font-weight:bold}
.money{font-size:32px;color:#23df7f;font-weight:bold;margin:8px 0}
.usage{color:#b8cadc;font-size:13px}
.rmenu{margin-top:22px;display:grid;gap:7px}
.rmenu div{padding:14px;border-radius:12px;cursor:pointer}
.rmenu .selected{background:#1687ff}
.info-box{margin-top:25px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:13px;padding:13px;color:#d8e6f3;font-size:12px;line-height:1.8}
.info-box p{margin:7px 0 0;text-align:right;color:#b8c9da}
@media(max-width:1000px){.rightbar{display:none}}
@media(max-width:700px){.sidebar{display:none}.messages{padding:25px 15px}.input-area{padding:12px}.footer{display:none}}