:root{--green:#25d366;--dark:#0b141a;--panel:#111b21;--line:#26343d;--muted:#8696a0;--text:#e9edef;--bubble:#005c4b}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background:#0c1317;color:var(--text)}a{color:inherit;text-decoration:none}input,select,textarea,button{font:inherit}.login{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#075e54,#0b141a)}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 18px 60px #0008}.login .card{width:min(420px,92vw)}.brand{font-size:24px;font-weight:800;margin-bottom:6px}.muted{color:var(--muted)}.field{margin:16px 0}.field label{display:block;margin-bottom:7px}.field input,.field select,.composer textarea{width:100%;background:#202c33;color:var(--text);border:1px solid #34434c;border-radius:10px;padding:12px}.btn{border:0;border-radius:10px;padding:11px 16px;cursor:pointer;background:var(--green);color:#06251b;font-weight:700}.btn.secondary{background:#202c33;color:var(--text)}.btn.danger{background:#ef5350;color:white}.error{background:#4a1f24;color:#ffcdd2;padding:10px;border-radius:10px}.topbar{height:64px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 22px}.nav{display:flex;gap:10px}.nav a{padding:9px 12px;border-radius:9px}.nav a.active,.nav a:hover{background:#202c33}.content{padding:22px;max-width:1500px;margin:auto}.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.stat{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px}.stat strong{font-size:30px;display:block}.inbox{height:calc(100vh - 108px);display:grid;grid-template-columns:340px 1fr 300px;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}.conversation-list{border-right:1px solid var(--line);overflow:auto}.search{padding:12px;border-bottom:1px solid var(--line)}.search input{width:100%;padding:10px;border:0;border-radius:9px;background:#202c33;color:white}.conversation{display:block;padding:14px;border-bottom:1px solid #1f2c33}.conversation:hover,.conversation.active{background:#202c33}.conversation-head{display:flex;justify-content:space-between;gap:8px}.preview{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted);margin-top:6px}.badge{background:var(--green);color:#063d2c;border-radius:20px;padding:2px 7px;font-size:12px}.chat{display:flex;flex-direction:column;min-width:0}.chat-header{padding:13px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.messages{flex:1;overflow:auto;padding:22px;background:#0b141a}.message{max-width:72%;margin:8px 0;padding:9px 12px;border-radius:10px;background:#202c33}.message.out{margin-left:auto;background:var(--bubble)}.message small{display:block;text-align:right;color:#aebac1;margin-top:4px}.composer{display:flex;gap:10px;padding:12px;border-top:1px solid var(--line)}.composer textarea{height:46px;resize:none}.side{border-left:1px solid var(--line);padding:18px;overflow:auto}.avatar{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:#2a3942;font-size:24px;font-weight:800;margin:auto}.side h3{text-align:center}.side dl div{padding:10px 0;border-bottom:1px solid var(--line)}.side dt{color:var(--muted);font-size:12px}.actions{display:flex;gap:8px;flex-wrap:wrap}.empty{display:grid;place-items:center;height:100%;color:var(--muted)}@media(max-width:1000px){.stats{grid-template-columns:repeat(2,1fr)}.inbox{grid-template-columns:300px 1fr}.side{display:none}}@media(max-width:700px){.content{padding:0}.topbar{padding:0 12px}.inbox{height:calc(100vh - 64px);border:0;border-radius:0;grid-template-columns:1fr}.conversation-list.hidden-mobile{display:none}.chat.hidden-mobile{display:none}.stats{grid-template-columns:1fr;padding:14px}.nav a{padding:7px}.message{max-width:88%}}