:root{
  --wa:#25d366; --wa-d:#128c7e; --wa-bg:#efeae2; --wa-out:#d9fdd3; --wa-in:#fff;
  --ig1:#feda75; --ig2:#d62976; --ig3:#4f5bd5; --ig-out:#efe7ff; --ig-in:#fff;
  --fb:#0084ff; --fb-out:#e7f0ff; --fb-in:#fff;
  --ink:#111b21; --muted:#667781; --line:#e9edef; --bg:#f0f2f5;
  --brand:#8a5a9e;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
#app{height:100vh;display:flex;flex-direction:column}

/* Topbar */
.topbar{height:56px;flex:0 0 56px;background:linear-gradient(90deg,#5f3a72,#8a5a9e);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 18px;box-shadow:0 1px 4px rgba(0,0,0,.15);z-index:5}
.brand{font-weight:700;letter-spacing:.5px}
.brand span{font-weight:400;opacity:.8;margin-left:8px;font-size:13px}
.topact{display:flex;align-items:center;gap:14px;font-size:14px}
.uname{opacity:.9}
.logout{color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.5);padding:5px 12px;border-radius:16px;font-size:13px}
.logout:hover{background:rgba(255,255,255,.15)}

.layout{flex:1;display:flex;min-height:0}

/* Sidebar */
.sidebar{width:380px;flex:0 0 380px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.search{padding:10px}
.search input{width:100%;border:none;background:var(--bg);border-radius:10px;padding:10px 14px;font-size:14px;outline:none}
.tabs{display:flex;gap:4px;padding:0 8px 8px}
.tab{flex:1;border:none;background:var(--bg);border-radius:9px;padding:7px 4px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:var(--muted)}
.tab b{font-size:13px;color:var(--ink)}
.tab.active{background:var(--brand);color:#fff}
.tab.active b{color:#fff}
.tab.wa.active{background:var(--wa-d)} .tab.ig.active{background:var(--ig2)} .tab.fb.active{background:var(--fb)}
.convlist{flex:1;overflow-y:auto;overflow-x:hidden}
.listmore{padding:14px;text-align:center;color:var(--muted);font-size:13px}

.conv{display:flex;gap:12px;padding:11px 14px;cursor:pointer;border-bottom:1px solid #f4f6f7;align-items:center}
.conv:hover{background:#f5f6f6}
.conv.sel{background:#e9f3ff}
.avatar{width:46px;height:46px;border-radius:50%;flex:0 0 46px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:17px}
.avatar.whatsapp{background:linear-gradient(135deg,#25d366,#128c7e)}
.avatar.instagram{background:linear-gradient(135deg,#feda75,#d62976 55%,#4f5bd5)}
.avatar.facebook{background:linear-gradient(135deg,#0084ff,#0064d6)}
.avatar.other{background:linear-gradient(135deg,#9aa,#667781)}
.conv-main{flex:1;min-width:0}
.conv-top{display:flex;justify-content:space-between;gap:8px}
.conv-name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-date{font-size:12px;color:var(--muted);flex:0 0 auto}
.conv-prev{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.conv-badges{display:flex;gap:6px;margin-top:3px}
.badge{font-size:11px;background:var(--bg);color:var(--muted);border-radius:10px;padding:1px 8px}
.badge.file{background:#e7f5ec;color:#128c7e}

/* Thread */
.thread{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--wa-bg)}
.thread.empty{align-items:center;justify-content:center}
.placeholder{text-align:center;color:var(--muted)}
.ph-logo{font-size:54px}
.thread-head{flex:0 0 auto;background:#fff;border-bottom:1px solid var(--line);padding:10px 18px;display:flex;align-items:center;gap:12px}
.thread-head .avatar{width:40px;height:40px;flex-basis:40px;font-size:15px}
.th-info{flex:1;min-width:0}
.th-name{font-weight:600;font-size:16px}
.th-sub{font-size:12px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;margin-top:2px}
.pill{font-size:11px;padding:2px 9px;border-radius:11px;color:#fff;font-weight:600}
.pill.whatsapp{background:var(--wa-d)} .pill.instagram{background:var(--ig2)} .pill.facebook{background:var(--fb)} .pill.other{background:#889}
.crm-link{color:var(--brand);text-decoration:none}

.msgs{flex:1;overflow-y:auto;padding:18px 8% 24px}
.thread.instagram .msgs{background:#fafafa}
.thread.facebook .msgs{background:#f5f8ff}
.loadold{display:block;margin:6px auto 16px;border:none;background:#fff;color:var(--muted);border-radius:16px;padding:6px 16px;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.1)}
.daysep{text-align:center;margin:14px 0}
.daysep span{background:#fff;color:var(--muted);font-size:12px;padding:4px 12px;border-radius:10px;box-shadow:0 1px 1px rgba(0,0,0,.06)}

.row{display:flex;margin:3px 0}
.row.out{justify-content:flex-end}
.bubble{max-width:70%;background:var(--wa-in);border-radius:9px;padding:7px 10px 5px;box-shadow:0 1px .5px rgba(0,0,0,.13);position:relative;font-size:14.2px;line-height:1.35;word-wrap:break-word;overflow-wrap:anywhere}
.row.out .bubble{background:var(--wa-out)}
.thread.instagram .bubble{border-radius:20px;box-shadow:none;border:1px solid #efefef}
.thread.instagram .row.out .bubble{background:#efe7ff;border-color:#e3d8ff}
.thread.facebook .row.out .bubble{background:var(--fb-out)}
.who{font-size:12px;font-weight:600;color:var(--wa-d);margin-bottom:2px}
.thread.instagram .who{color:var(--ig2)}
.thread.facebook .who{color:var(--fb)}
.row.out .who{color:#7a8}
.time{font-size:11px;color:var(--muted);float:right;margin:4px 0 -2px 10px}
.bubble a{color:#1a73e8}

.att img{max-width:260px;max-height:320px;border-radius:8px;display:block;cursor:pointer;background:#f0f0f0}
.att video{max-width:280px;border-radius:8px;display:block}
.att audio{width:240px}
.att .file{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);background:rgba(0,0,0,.04);padding:8px 10px;border-radius:8px}
.att .missing{font-size:12px;color:#c0392b;background:#fdecea;padding:6px 10px;border-radius:8px;display:inline-block}
.att-cap{font-size:12px;color:var(--muted);margin-top:2px}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:flex;align-items:center;justify-content:center;z-index:50}
.lightbox img{max-width:92vw;max-height:92vh;border-radius:6px}
.lbclose{position:absolute;top:18px;right:26px;color:#fff;font-size:30px;cursor:pointer}

/* Login */
.login-body{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,#5f3a72,#8a5a9e)}
.login-card{background:#fff;padding:38px 34px;border-radius:16px;width:340px;box-shadow:0 12px 40px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:12px}
.login-logo{font-weight:700;letter-spacing:1px;text-align:center;color:var(--brand);font-size:20px}
.login-sub{text-align:center;color:var(--muted);margin-top:-8px;font-size:14px}
.login-card input{border:1px solid var(--line);border-radius:9px;padding:12px 14px;font-size:15px;outline:none}
.login-card input:focus{border-color:var(--brand)}
.login-card button{background:var(--brand);color:#fff;border:none;border-radius:9px;padding:12px;font-size:15px;font-weight:600;cursor:pointer;margin-top:4px}
.login-err{background:#fdecea;color:#c0392b;border-radius:8px;padding:9px 12px;font-size:13px;text-align:center}
.login-note{font-size:11px;color:var(--muted);text-align:center;margin-top:6px;line-height:1.5}

@media(max-width:820px){
  .sidebar{width:100%;flex-basis:100%}
  .thread{display:none}
  body.mobile-thread .sidebar{display:none}
  body.mobile-thread .thread{display:flex}
  .msgs{padding:14px 12px}
  .bubble{max-width:86%}
}