:root{
  --primary:#1517d9; --primary2:#6d5dfc; --dark:#090a22; --soft:#f6f7fb; --card:#ffffff;
  --muted:#7b8194; --success:#16a34a; --danger:#ef4444; --border:#e7e9f3;
}
*{box-sizing:border-box} body{font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:linear-gradient(180deg,#f9faff 0%,#eef1ff 100%);color:#12142d;min-height:100vh;}
a{text-decoration:none}.app-shell{max-width:520px;margin:0 auto;min-height:100vh;background:#f7f8ff;box-shadow:0 0 45px rgba(20,20,60,.1);position:relative;overflow:hidden}.auth-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(circle at top left,#6567ff 0,#1517d9 28%,#090a22 70%)}.auth-card{width:100%;max-width:450px;border:0;border-radius:34px;padding:28px;background:rgba(255,255,255,.96);box-shadow:0 30px 70px rgba(0,0,0,.25)}.brand-badge{width:58px;height:58px;border-radius:20px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:white;display:grid;place-items:center;font-weight:900;font-size:24px;box-shadow:0 14px 30px rgba(21,23,217,.35)}.form-control{border-radius:18px;border:1px solid var(--border);padding:14px 16px}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 .2rem rgba(21,23,217,.1)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));border:0;border-radius:18px;padding:13px 18px;font-weight:800;box-shadow:0 14px 28px rgba(21,23,217,.25)}.btn-light-soft{background:#fff;border:1px solid var(--border);border-radius:16px;font-weight:700}.topbar{padding:18px 18px 14px;background:linear-gradient(135deg,#1517d9,#6d5dfc);color:#fff;border-bottom-left-radius:30px;border-bottom-right-radius:30px;box-shadow:0 16px 32px rgba(21,23,217,.25);position:sticky;top:0;z-index:5}.mini-muted{font-size:12px;color:rgba(255,255,255,.78)}.avatar{width:48px;height:48px;border-radius:18px;background:linear-gradient(135deg,#eef0ff,#fff);color:var(--primary);display:grid;place-items:center;font-weight:900;flex:none}.avatar-lg{width:64px;height:64px;border-radius:24px;font-size:22px}.online-dot{width:12px;height:12px;border-radius:50%;background:var(--success);border:2px solid #fff;display:inline-block}.offline-dot{background:#c6cad7}.search-box{margin:18px}.search-box .form-control{border-radius:22px;background:#fff}.conversation-list{padding:0 14px 110px}.chat-card{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid rgba(231,233,243,.9);border-radius:24px;padding:14px;margin-bottom:12px;box-shadow:0 10px 26px rgba(30,42,110,.06);transition:.2s}.chat-card:hover{transform:translateY(-1px)}.chat-title{font-weight:800;color:#12142d}.chat-snippet{color:#7b8194;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:270px}.unread-badge{min-width:24px;height:24px;border-radius:99px;background:#ff3d71;color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center;padding:0 7px}.bottom-nav{position:fixed;left:50%;bottom:14px;transform:translateX(-50%);width:min(492px,calc(100% - 28px));background:rgba(255,255,255,.92);backdrop-filter:blur(20px);border:1px solid var(--border);border-radius:28px;padding:10px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;box-shadow:0 18px 40px rgba(20,20,70,.15);z-index:9}.bottom-nav a{border-radius:18px;padding:10px 8px;text-align:center;color:#6b7280;font-size:12px;font-weight:800}.bottom-nav a.active,.bottom-nav a:hover{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}.chat-page{height:100vh;display:flex;flex-direction:column;background:#f7f8ff}.chat-header{display:flex;align-items:center;gap:12px;padding:14px 16px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:6}.back-btn{width:42px;height:42px;border-radius:16px;border:1px solid var(--border);display:grid;place-items:center;color:#111;background:#fff}.messages{flex:1;overflow-y:auto;padding:18px 14px 18px;background:linear-gradient(180deg,#f7f8ff,#eef1ff)}.message-row{display:flex;margin-bottom:10px}.message-row.me{justify-content:flex-end}.bubble{max-width:78%;padding:12px 14px;border-radius:22px;background:#fff;border:1px solid var(--border);box-shadow:0 8px 18px rgba(20,30,70,.05);font-size:14px;line-height:1.4;word-break:break-word}.message-row.me .bubble{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border:0;border-bottom-right-radius:8px}.message-row.them .bubble{border-bottom-left-radius:8px}.msg-time{display:block;font-size:10px;opacity:.67;margin-top:5px}.composer{padding:12px;background:#fff;border-top:1px solid var(--border);display:flex;gap:8px;align-items:center}.composer textarea{resize:none;min-height:48px;max-height:120px;border-radius:20px}.send-btn{width:50px;height:50px;border-radius:18px;display:grid;place-items:center;flex:none}.profile-card{margin:18px;background:#fff;border-radius:28px;border:1px solid var(--border);padding:18px;box-shadow:0 12px 30px rgba(20,30,90,.07)}.pill{border-radius:999px;padding:7px 12px;background:#eef0ff;color:var(--primary);font-size:12px;font-weight:800}.empty-state{text-align:center;padding:54px 22px;color:#737a8c}.empty-state .brand-badge{margin:0 auto 14px}.section-title{font-weight:900;letter-spacing:-.02em}.toast-app{position:fixed;top:18px;left:50%;transform:translateX(-50%);width:min(460px,calc(100% - 28px));z-index:50}.toast-card{background:#11132d;color:#fff;border-radius:20px;padding:13px 15px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
@media(min-width:768px){.app-shell{border-radius:34px;min-height:94vh;margin-top:3vh;margin-bottom:3vh}.chat-page{height:94vh;border-radius:34px;overflow:hidden}.bottom-nav{bottom:24px}.auth-card{padding:34px}}

.input-group-text{border:1px solid var(--border);padding:14px 16px}.text-primary{color:var(--primary)!important}@media (display-mode: standalone){.app-shell{min-height:100dvh}}
.avatar-img{object-fit:cover;background:#fff;border:2px solid rgba(255,255,255,.75)}
.fw-black{font-weight:900}.icon-btn{width:44px;height:44px;border-radius:16px;border:1px solid var(--border);background:#fff;display:grid;place-items:center;font-size:19px;flex:none}.emoji-panel{display:flex;flex-wrap:wrap;gap:6px;padding:10px 12px;background:#fff;border-top:1px solid var(--border)}.emoji-panel button{width:36px;height:36px;border:0;border-radius:12px;background:#f1f3ff;font-size:19px}.typing-indicator{font-size:12px;color:var(--primary);font-weight:800;margin-top:2px}.message-image{display:block;max-width:240px;width:100%;border-radius:18px;margin-bottom:6px;box-shadow:0 6px 18px rgba(0,0,0,.12)}.message-row.me .message-image{border:2px solid rgba(255,255,255,.35)}.attachment-preview{position:fixed;left:50%;bottom:78px;transform:translateX(-50%);width:min(492px,calc(100% - 28px));background:#10122d;color:#fff;border-radius:18px;padding:10px 14px;box-shadow:0 18px 40px rgba(20,20,70,.25);z-index:10;display:flex;justify-content:space-between;gap:10px}.admin-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.stat-card{background:#fff;border:1px solid var(--border);border-radius:24px;padding:18px;box-shadow:0 10px 25px rgba(20,30,90,.06)}.stat-number{font-size:30px;font-weight:900;color:var(--primary);line-height:1}.badge{border-radius:999px}.composer{padding-bottom:max(12px,env(safe-area-inset-bottom))}
.bottom-nav{grid-template-columns:repeat(4,1fr)}
.avatar-xl{width:86px!important;height:86px!important;border-radius:30px!important;font-size:28px}.message-video{display:block;max-width:260px;width:100%;border-radius:18px;margin-bottom:8px}.file-chip{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.88);color:#111!important;border-radius:16px;padding:9px 10px;margin-bottom:6px;font-weight:800}.message-row.me .file-chip{background:rgba(255,255,255,.18);color:#fff!important}.msg-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}.msg-actions button{border:0;border-radius:999px;padding:4px 8px;font-size:10px;background:rgba(255,255,255,.2);color:inherit}.edited-label{display:block;opacity:.7;margin-top:3px}.message-row.deleted .bubble{opacity:.72;font-style:italic}.recording{background:#fee2e2!important;color:#b91c1c!important;animation:pulseRec 1s infinite}@keyframes pulseRec{50%{transform:scale(.92)}}.admin-links{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.admin-links a{background:rgba(255,255,255,.16);color:#fff;border-radius:14px;padding:9px 6px;text-align:center;font-size:12px;font-weight:800}.member-picker{padding:0;max-height:420px;overflow:auto}.form-select{border-radius:18px;border:1px solid var(--border);padding:14px 16px}.dropdown-menu{border-radius:18px;border:1px solid var(--border);box-shadow:0 20px 55px rgba(20,30,90,.16)}
/* WhatsApp-style reply, forward and reactions */
.reply-bar{background:#fff;border-top:1px solid var(--border);padding:10px 14px;display:flex;align-items:center;justify-content:space-between;gap:10px;box-shadow:0 -8px 20px rgba(20,30,80,.06)}
.reply-bar>div{border-left:4px solid var(--primary);padding-left:10px;min-width:0}.reply-bar strong{display:block;font-size:12px;color:var(--primary)}.reply-bar span{display:block;font-size:12px;color:#697084;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reply-bar button{border:0;background:#f1f3ff;border-radius:12px;width:34px;height:34px;font-size:22px;line-height:1;color:#111}
.reply-quote{border-left:4px solid rgba(21,23,217,.5);background:rgba(21,23,217,.08);border-radius:12px;padding:7px 9px;margin-bottom:8px;cursor:pointer}.message-row.me .reply-quote{border-left-color:rgba(255,255,255,.75);background:rgba(255,255,255,.16)}.reply-quote strong{display:block;font-size:11px}.reply-quote span{display:block;font-size:12px;opacity:.85;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:230px}.forwarded-label{font-size:11px;font-weight:800;opacity:.72;margin-bottom:6px}.forward-preview{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);border-radius:18px;padding:11px 13px;font-size:13px;color:#fff}.mini-section{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#7b8194;font-weight:900;margin:14px 8px 8px}.reaction-strip{display:flex;gap:5px;flex-wrap:wrap;margin-top:7px}.reaction-pill{border:0;background:#fff;color:#111;border-radius:999px;font-size:12px;padding:3px 8px;box-shadow:0 4px 12px rgba(0,0,0,.08)}.reaction-pill.mine{outline:2px solid rgba(21,23,217,.35)}.message-row.me .reaction-pill{background:rgba(255,255,255,.92);color:#111}.quick-reacts{display:inline-flex;gap:3px}.quick-reacts button{font-size:12px}.message-highlight .bubble{animation:msgFlash 1.3s ease}@keyframes msgFlash{0%,100%{filter:none}35%{filter:brightness(1.35);transform:scale(1.015)}}