/* ═══════════════════════════════════════════════════
   main.css  —  Nexus v5
   Production Ready
═══════════════════════════════════════════════════ */
:root {
  --bg:#0f1117; --bg2:#161b24; --bg3:#1c2333; --bgh:#1e2840; --bga:#212d45;
  --border:#232c3d; --borderl:#2a3650;
  --t1:#e8edf5; --t2:#8a9ab8; --tm:#4f617a;
  --accent:#3b82f6; --accents:rgba(59,130,246,.15); --accentg:rgba(59,130,246,.3);
  --sent:#1e3a5f; --recv:#1c2333;
  --green:#22c55e; --red:#ef4444; --yellow:#f59e0b;
  --r-sm:8px; --r-md:12px; --r-lg:18px; --r-xl:24px;
  --sidebar-w:340px; --hdr:60px;
  --font:'DM Sans',sans-serif; --mono:'JetBrains Mono',monospace;
}
html[data-theme="light"] {
  --bg:#f7f8fa; --bg2:#ffffff; --bg3:#eef1f6; --bgh:#e6eaf2; --bga:#e0e7f5;
  --border:#dde3ee; --borderl:#c9d2e3;
  --t1:#151a24; --t2:#5b6b85; --tm:#8a97ab;
  --accent:#3b82f6; --accents:rgba(59,130,246,.1); --accentg:rgba(59,130,246,.25);
  --sent:#dbeafe; --recv:#eef1f6;
  --green:#16a34a; --red:#dc2626; --yellow:#d97706;
}
html[data-theme="light"] .msg-row.sent .msg-bubble{color:#0b1220}
html[data-theme="light"] .msg-status{color:var(--t2)}
html[data-theme="light"] .auth-grid{opacity:.4}
html[data-theme="light"] .avatar{background:#e6eaf2}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:var(--font);background:var(--bg);color:var(--t1);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;outline:none;border:none;background:none;color:inherit}
a{color:var(--accent)}
svg{flex-shrink:0}

/* ── Screens ── */
.screen{position:fixed;inset:0;display:none}
.screen.active{display:flex}

/* ════════════════════════ AUTH ════════════════════════ */
#auth-screen{align-items:center;justify-content:center;background:var(--bg)}
.auth-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.auth-grid{position:absolute;inset:-10%;background-image:linear-gradient(rgba(59,130,246,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(59,130,246,.04) 1px,transparent 1px);background-size:40px 40px;animation:gridDrift 20s linear infinite}
@keyframes gridDrift{from{transform:translateY(0)}to{transform:translateY(40px)}}
.auth-glow{position:absolute;top:30%;left:50%;transform:translate(-50%,-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(59,130,246,.12) 0%,transparent 70%);animation:glowPulse 4s ease-in-out infinite}
@keyframes glowPulse{0%,100%{opacity:.6}50%{opacity:1}}
.auth-container{position:relative;width:100%;max-width:420px;padding:40px 32px;display:flex;flex-direction:column;gap:8px;animation:authFadeIn .5s ease}
@keyframes authFadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.auth-logo{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.logo-mark{width:48px;height:48px;background:var(--accents);border:1px solid var(--accentg);border-radius:14px;display:grid;place-items:center;color:var(--accent)}
.logo-mark.sm{width:32px;height:32px;border-radius:8px}
.logo-text{font-size:26px;font-weight:600;letter-spacing:-.5px}
.auth-tagline{font-size:13px;color:var(--tm);margin-bottom:24px}
.auth-step{display:none;flex-direction:column;gap:14px;animation:stepIn .35s ease}
.auth-step.active{display:flex}
@keyframes stepIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
.auth-step h2{font-size:26px;font-weight:600;line-height:1.25;letter-spacing:-.5px}
.step-sub{font-size:14px;color:var(--t2);margin-top:-6px}
.input-label{font-size:12px;font-weight:600;color:var(--t2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px;display:block}
.input-group{display:flex;flex-direction:column;gap:4px}
.text-input{width:100%;padding:13px 16px;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r-md);font-size:15px;transition:border-color .2s}
.text-input:focus{border-color:var(--accent)}
.pw-wrap{position:relative}
.pw-wrap .text-input{padding-right:44px}
.pw-toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--tm);transition:color .15s}
.pw-toggle:hover{color:var(--t2)}
.error-msg{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:var(--red);padding:10px 14px;border-radius:var(--r-sm);font-size:13px}
.btn-primary{display:flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;background:var(--accent);color:#fff;border-radius:var(--r-md);font-size:15px;font-weight:500;transition:all .2s}
.btn-primary.sm{padding:8px 16px;font-size:13px}
.btn-primary:hover{background:#2563eb;transform:translateY(-1px);box-shadow:0 4px 16px var(--accentg)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{display:flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;background:var(--bg3);color:var(--t1);border:1.5px solid var(--border);border-radius:var(--r-md);font-size:15px;font-weight:500;transition:all .2s}
.btn-secondary:hover{background:var(--bgh)}
.demo-note{font-size:12px;color:var(--tm);text-align:center;background:var(--bg3);padding:10px 14px;border-radius:var(--r-sm);border:1px solid var(--border);line-height:1.7}
.demo-note strong{color:var(--accent)}
.avatar-upload-wrap{display:flex;justify-content:center;padding:8px 0}
.avatar-upload{display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer}
.avatar-preview{width:80px;height:80px;border-radius:50%;background:var(--bg3);border:2px dashed var(--borderl);display:grid;place-items:center;color:var(--tm);overflow:hidden;transition:border-color .2s}
.avatar-preview:hover{border-color:var(--accent)}
.avatar-preview img{width:100%;height:100%;object-fit:cover}
.avatar-upload span{font-size:13px;color:var(--t2)}

/* ════════════════════════ ADMIN ════════════════════════ */
#admin-screen{background:var(--bg)}
.admin-shell{display:flex;width:100%;height:100%}
.admin-sidebar{width:220px;min-width:220px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 12px}
.admin-logo{display:flex;align-items:center;gap:10px;padding:8px 8px 24px;font-size:15px;font-weight:600;color:var(--t1)}
.admin-nav{display:flex;flex-direction:column;gap:2px;flex:1}
.admin-nav-item{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--t2);transition:all .15s;text-align:left}
.admin-nav-item:hover{background:var(--bgh);color:var(--t1)}
.admin-nav-item.active{background:var(--accents);color:var(--accent)}
.admin-signout{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--r-sm);font-size:13px;color:var(--red);margin-top:8px;transition:background .15s}
.admin-signout:hover{background:rgba(239,68,68,.1)}
.admin-content{flex:1;overflow-y:auto;padding:32px}
.admin-tab{display:none}
.admin-tab.active{display:block}
.admin-tab-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.admin-tab-header h2{font-size:22px;font-weight:600}
.admin-search{display:flex;align-items:center;gap:10px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-md);padding:10px 14px;margin-bottom:16px}
.admin-search svg{color:var(--tm)}
.admin-search input{flex:1;font-size:14px}
.admin-search input::placeholder{color:var(--tm)}
.employee-table-wrap{overflow-x:auto;border-radius:var(--r-lg);border:1px solid var(--border)}
.employee-table{width:100%;border-collapse:collapse}
.employee-table th{padding:12px 14px;text-align:left;font-size:11px;font-weight:600;color:var(--t2);text-transform:uppercase;letter-spacing:.5px;background:var(--bg3);border-bottom:1px solid var(--border)}
.employee-table td{padding:11px 14px;border-bottom:1px solid var(--border);font-size:14px;vertical-align:middle}
.employee-table tbody tr:last-child td{border-bottom:none}
.employee-table tbody tr:hover td{background:var(--bgh)}
.emp-avatar-cell{display:flex;align-items:center;gap:10px}
.status-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:500}
.status-badge.active{background:rgba(34,197,94,.1);color:var(--green)}
.status-badge.inactive{background:rgba(239,68,68,.1);color:var(--red)}
.table-actions{display:flex;gap:5px;flex-wrap:wrap}
.tbl-btn{padding:4px 10px;border-radius:var(--r-sm);font-size:11px;font-weight:500;transition:all .15s;border:1px solid var(--border);color:var(--t2)}
.tbl-btn:hover{background:var(--bgh);color:var(--t1)}
.tbl-btn.danger{color:var(--red);border-color:rgba(239,68,68,.3)}
.tbl-btn.danger:hover{background:rgba(239,68,68,.1)}
.tbl-btn.success{color:var(--green);border-color:rgba(34,197,94,.3)}
.tbl-btn.success:hover{background:rgba(34,197,94,.1)}
.backup-info{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.backup-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;display:flex;flex-direction:column;gap:12px}
.backup-card svg{color:var(--accent)}
.backup-card h3{font-size:16px;font-weight:600}
.backup-card p{font-size:13px;color:var(--t2);flex:1}
.backup-log{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px}
.backup-log h3{font-size:15px;font-weight:600;margin-bottom:12px}
.log-list{display:flex;flex-direction:column;gap:6px;max-height:280px;overflow-y:auto}
.log-item{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--bg3);border-radius:var(--r-sm);font-size:13px}
.log-item .log-time{color:var(--tm);font-family:var(--mono);font-size:11px;margin-left:auto;white-space:nowrap}
.settings-cards{display:flex;flex-direction:column;gap:16px}
.settings-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;display:flex;flex-direction:column;gap:14px}
.settings-card h3{font-size:15px;font-weight:600}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px solid var(--border)}
.setting-row:last-child{border-bottom:none}
.setting-name{font-size:14px;font-weight:500;margin-bottom:2px}
.setting-desc{font-size:12px;color:var(--t2)}
.toggle{position:relative;display:inline-block;width:44px;height:24px;flex-shrink:0}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--bg3);border:1px solid var(--border);border-radius:12px;transition:.2s;cursor:pointer}
.toggle-slider::before{content:'';position:absolute;width:18px;height:18px;left:2px;top:2px;background:var(--t2);border-radius:50%;transition:.2s}
.toggle input:checked+.toggle-slider{background:var(--accent);border-color:var(--accent)}
.toggle input:checked+.toggle-slider::before{transform:translateX(20px);background:#fff}
.toggle input:disabled+.toggle-slider{opacity:.45;cursor:not-allowed}

/* ════════════════════════ SIDEBAR ════════════════════════ */
.sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);height:100%;display:flex;flex-direction:column;background:var(--bg2);border-right:1px solid var(--border);overflow:hidden}
.sidebar-header{height:var(--hdr);padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-shrink:0}
.user-info{display:flex;align-items:center;gap:10px;cursor:pointer;padding:6px;border-radius:var(--r-sm);transition:background .15s;flex:1;min-width:0}
.user-info:hover{background:var(--bgh)}
.user-meta{display:flex;flex-direction:column;min-width:0}
.user-name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-status{font-size:11px;color:var(--green)}
.header-actions{display:flex;gap:4px}
.icon-btn{width:36px;height:36px;display:grid;place-items:center;border-radius:var(--r-sm);color:var(--t2);transition:all .15s;position:relative}
.icon-btn:hover{background:var(--bgh);color:var(--t1)}
/* Filter tabs */
.filter-tabs{display:flex;padding:8px 12px 0;gap:4px;border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto;scrollbar-width:none}
.filter-tabs::-webkit-scrollbar{display:none}
.filter-tab{padding:7px 12px;border-radius:var(--r-sm) var(--r-sm) 0 0;font-size:13px;font-weight:500;color:var(--t2);transition:all .15s;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap;flex-shrink:0}
.filter-tab:hover{color:var(--t1)}
.filter-tab.active{color:var(--accent);border-bottom-color:var(--accent);background:var(--accents)}
.filter-tab.filter-add{color:var(--tm);font-size:16px;padding:7px 10px;font-weight:400}
.filter-tab.filter-add:hover{color:var(--accent);background:var(--accents)}
/* Search */
.search-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--border);flex-shrink:0}
.search-bar svg{color:var(--tm);flex-shrink:0}
.search-bar input{flex:1;font-size:14px}
.search-bar input::placeholder{color:var(--tm)}
/* Chat list */
.chat-list{flex:1;overflow-y:auto}
.chat-list::-webkit-scrollbar{width:3px}
.chat-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.chat-list-empty{padding:20px;text-align:center;color:var(--tm);font-size:14px}
.chat-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background .15s;position:relative}
.chat-item:hover{background:var(--bgh)}
.chat-item.active{background:var(--bga)}
.chat-item.active::before{content:'';position:absolute;left:0;top:20%;bottom:20%;width:3px;background:var(--accent);border-radius:0 2px 2px 0}
.chat-item-info{flex:1;min-width:0}
.chat-item-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.chat-item-name{font-weight:500;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-item-time{font-size:11px;color:var(--tm);flex-shrink:0}
.chat-item-bottom{display:flex;align-items:center;gap:4px;margin-top:2px}
.chat-item-preview{font-size:13px;color:var(--tm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.unread-badge{background:var(--green);color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:grid;place-items:center;padding:0 6px;flex-shrink:0}
.fav-star{color:var(--yellow);font-size:12px}
.req-badge{position:absolute;top:4px;right:4px;background:var(--red);color:#fff;font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:8px;display:grid;place-items:center;padding:0 4px}

/* ════════════════════════ AVATAR ════════════════════════ */
.avatar{border-radius:50%;background:var(--bg3);display:grid;place-items:center;font-weight:600;overflow:hidden;flex-shrink:0;letter-spacing:-.3px}
.avatar img{width:100%;height:100%;object-fit:cover}
.avatar.sm{width:40px;height:40px;font-size:16px}
.avatar.md{width:48px;height:48px;font-size:18px}
.avatar.lg{width:64px;height:64px;font-size:24px}
.avatar.xl{width:80px;height:80px;font-size:32px}

/* ════════════════════════ CHAT AREA ════════════════════════ */
.chat-area{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}
.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--tm)}
.empty-icon{width:80px;height:80px;background:var(--bg2);border:1px solid var(--border);border-radius:50%;display:grid;place-items:center;margin-bottom:8px}
.empty-state h3{font-size:18px;font-weight:500;color:var(--t2)}
.empty-state p{font-size:14px;text-align:center;max-width:260px}
.chat-view{flex:1;display:flex;flex-direction:column;overflow:hidden}
.hidden{display:none!important}
.chat-header{height:var(--hdr);padding:0 12px;display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border);background:var(--bg2);flex-shrink:0}
.back-btn{display:none}
.chat-header-info{flex:1;display:flex;align-items:center;gap:10px;cursor:pointer;padding:6px;border-radius:var(--r-sm);min-width:0;transition:background .15s}
.chat-header-info:hover{background:var(--bgh)}
.chat-header-name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-header-sub{font-size:12px;color:var(--tm)}
/* In-chat search */
.in-chat-search-bar{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--bg3);border-bottom:1px solid var(--border);flex-shrink:0}
.in-chat-search-bar svg{color:var(--tm);flex-shrink:0}
.in-chat-search-bar input{flex:1;font-size:14px}
.in-chat-search-bar input::placeholder{color:var(--tm)}
.search-count{font-size:12px;color:var(--t2);white-space:nowrap}
/* Select toolbar */
.select-toolbar{display:flex;align-items:center;gap:8px;padding:0 12px;height:var(--hdr);background:var(--bg3);border-bottom:1px solid var(--border);flex-shrink:0}
.select-count{font-size:14px;font-weight:500;color:var(--t2)}
/* Messages */
.messages-container{flex:1;overflow-y:auto;padding:12px 16px;background:var(--bg);scroll-behavior:smooth}
.messages-container::-webkit-scrollbar{width:3px}
.messages-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.messages-inner{display:flex;flex-direction:column;gap:2px;min-height:100%;justify-content:flex-end}
.date-divider{display:flex;align-items:center;gap:12px;margin:12px 0 8px}
.date-divider::before,.date-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.date-divider span{font-size:11px;color:var(--tm);letter-spacing:.5px;text-transform:uppercase;white-space:nowrap}
.msg-row{display:flex;align-items:flex-end;gap:8px;margin:1px 0;animation:msgIn .2s ease;position:relative}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.msg-row.sent{flex-direction:row-reverse}
.msg-row.sent .msg-avatar{display:none}
.msg-avatar{width:28px;height:28px;border-radius:50%;overflow:hidden;background:var(--bg3);font-size:11px;font-weight:600;display:grid;place-items:center;flex-shrink:0}
.msg-avatar img{width:100%;height:100%;object-fit:cover}
.msg-bubble{max-width:68%;padding:9px 13px;border-radius:var(--r-lg);font-size:14.5px;line-height:1.5;word-break:break-word}
.msg-row.recv .msg-bubble{background:var(--recv);border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 4px}
.msg-row.sent .msg-bubble{background:var(--sent);border-radius:var(--r-lg) var(--r-lg) 4px var(--r-lg)}
.msg-row.grouped .msg-bubble{border-radius:var(--r-lg)}
.msg-sender{font-size:12px;font-weight:600;color:var(--accent);margin-bottom:3px}
.msg-footer{display:flex;align-items:center;gap:4px;justify-content:flex-end;margin-top:4px}
.msg-time{font-size:11px;color:var(--tm)}
.msg-status{color:var(--tm)}
.msg-status.read{color:var(--accent)}
.edited-tag{font-size:10px;color:var(--tm);font-style:italic}
.msg-deleted{opacity:.55;font-style:italic;color:var(--t2);font-size:13px}
.msg-image{max-width:260px;border-radius:var(--r-md);overflow:hidden;cursor:pointer}
.msg-image img,.msg-image video{width:100%;display:block;border-radius:var(--r-md)}
.msg-image video{max-height:200px;object-fit:cover}
.msg-file{display:flex;align-items:center;gap:10px;padding:10px 12px;background:rgba(0,0,0,.2);border-radius:var(--r-md);cursor:pointer}
.file-icon{color:var(--accent)}
.file-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}
.file-size{font-size:11px;color:var(--tm)}
.msg-reactions{display:flex;gap:4px;flex-wrap:wrap;margin-top:4px}
.reaction-pill{background:var(--bg3);border:1px solid var(--border);border-radius:12px;padding:2px 8px;font-size:12px;cursor:pointer;transition:background .15s}
.reaction-pill:hover{background:var(--bgh)}
.reaction-pill.mine{background:var(--accents);border-color:var(--accentg);color:var(--accent)}
.msg-highlight{outline:2px solid var(--accent);border-radius:var(--r-lg)}
.reply-quote{background:rgba(0,0,0,.18);border-left:3px solid var(--accent);border-radius:6px;padding:5px 10px;margin-bottom:6px;cursor:pointer;transition:background .15s}
.reply-quote:hover{background:rgba(0,0,0,.28)}
.reply-quote-name{font-size:12px;font-weight:600;color:var(--accent)}
.reply-quote-text{font-size:12.5px;color:var(--t2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px}
/* Select check */
.select-check{width:20px;height:20px;border-radius:50%;border:2px solid var(--borderl);flex-shrink:0;align-self:center;transition:all .15s;margin-right:4px}
.select-check.active{background:var(--accent);border-color:var(--accent)}
.select-check.active::after{content:'✓';color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;line-height:16px}
/* Banners */
.chat-locked-banner{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;background:rgba(239,68,68,.08);border-top:1px solid rgba(239,68,68,.2);color:var(--red);font-size:13px;flex-shrink:0}
.edit-banner{display:flex;align-items:center;gap:10px;padding:8px 16px;background:var(--accents);border-top:1px solid var(--accentg);flex-shrink:0}
/* Input */
.input-area{padding:10px 16px 14px;background:var(--bg2);border-top:1px solid var(--border);flex-shrink:0;position:relative}
.input-toolbar{display:flex;gap:8px;padding:8px 0 10px;border-bottom:1px solid var(--border);margin-bottom:10px}
.tool-btn{display:flex;align-items:center;gap:6px;padding:7px 12px;border-radius:var(--r-md);color:var(--t2);font-size:13px;background:var(--bg3);border:1px solid var(--border);transition:all .15s}
.tool-btn:hover{background:var(--bgh);color:var(--accent);border-color:var(--accentg)}
.input-row{display:flex;align-items:flex-end;gap:8px}
.text-input-wrap{flex:1;background:var(--bg3);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:4px 4px 4px 16px;transition:border-color .2s;display:flex;align-items:flex-end}
.text-input-wrap:focus-within{border-color:var(--accentg)}
.message-textarea{width:100%;resize:none;font-size:15px;background:none;color:var(--t1);max-height:140px;overflow-y:auto;padding:8px 0;line-height:1.5}
.message-textarea::placeholder{color:var(--tm)}
.send-btn{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;flex-shrink:0;transition:all .2s;transform:scale(.9);opacity:.5}
.send-btn.active{transform:scale(1);opacity:1}
.send-btn.active:hover{background:#2563eb;box-shadow:0 2px 12px var(--accentg)}
.attach-btn,.emoji-btn{color:var(--tm)}
.attach-btn:hover,.emoji-btn:hover{color:var(--accent);background:var(--bgh)}
/* Emoji */
.emoji-picker{position:absolute;bottom:100%;right:16px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);padding:12px;box-shadow:0 8px 40px rgba(0,0,0,.5);z-index:100;width:280px}
.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:4px}
.emoji-btn-item{width:30px;height:30px;display:grid;place-items:center;font-size:18px;border-radius:6px;cursor:pointer;transition:background .1s}
.emoji-btn-item:hover{background:var(--bgh)}
/* Audio */
.audio-record-bar{display:flex;align-items:center;gap:10px;padding:10px 14px;background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.25);border-radius:var(--r-xl);margin-bottom:10px;animation:audioBarIn .2s ease}
@keyframes audioBarIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.audio-wave{display:flex;align-items:center;gap:3px;height:24px}
.audio-wave span{display:block;width:3px;background:var(--red);border-radius:2px;animation:wavePulse .6s ease-in-out infinite}
.audio-wave span:nth-child(1){height:8px;animation-delay:0s}
.audio-wave span:nth-child(2){height:16px;animation-delay:.1s}
.audio-wave span:nth-child(3){height:22px;animation-delay:.2s}
.audio-wave span:nth-child(4){height:14px;animation-delay:.3s}
.audio-wave span:nth-child(5){height:8px;animation-delay:.4s}
@keyframes wavePulse{0%,100%{transform:scaleY(.5)}50%{transform:scaleY(1)}}
.audio-rec-label{font-size:12px;font-weight:700;color:var(--red);letter-spacing:.5px}
.audio-timer{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--t1)}
.audio-cancel-btn{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:var(--t2);transition:all .15s}
.audio-cancel-btn:hover{background:rgba(239,68,68,.15);color:var(--red)}
.audio-stop-btn{width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;transition:all .15s;flex-shrink:0}
.audio-stop-btn:hover{background:#2563eb}
.audio-msg{display:flex;align-items:center;gap:10px;padding:4px 0;min-width:200px}
.audio-play-btn{width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;flex-shrink:0;transition:all .15s}
.audio-play-btn:hover{background:#2563eb}
.audio-waveform-static{display:flex;align-items:center;gap:2px;flex:1;height:28px}
.audio-bar{width:3px;background:var(--accentg);border-radius:2px;flex-shrink:0;transition:height .25s ease,background-color .1s linear}
.audio-bar.played{background:var(--accent)}
.audio-dur{font-size:12px;font-family:var(--mono);color:var(--tm);flex-shrink:0;white-space:nowrap}
/* Quick react */
.quick-react-bar{position:absolute;bottom:calc(100% + 6px);left:0;background:var(--bg2);border:1px solid var(--border);border-radius:40px;padding:6px 10px;display:flex;gap:4px;z-index:200;box-shadow:0 4px 20px rgba(0,0,0,.4);animation:modalIn .15s ease}
.msg-row.sent .quick-react-bar{left:auto;right:0}
.qr-btn{font-size:22px;width:36px;height:36px;display:grid;place-items:center;border-radius:50%;transition:all .15s;cursor:pointer}
.qr-btn:hover{background:var(--bgh);transform:scale(1.2)}

/* ════════════════════════ MODALS ════════════════════════ */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.65);backdrop-filter:blur(4px);display:grid;place-items:center;z-index:1000;padding:20px;animation:overlayIn .2s ease}
@keyframes overlayIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-xl);width:100%;max-width:440px;max-height:88vh;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:14px;box-shadow:0 8px 40px rgba(0,0,0,.5);animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal::-webkit-scrollbar{width:3px}
.modal::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.modal-header{display:flex;align-items:center;justify-content:space-between}
.modal-header h3{font-size:18px;font-weight:600}
.modal-sub{font-size:13px;color:var(--tm);margin-top:-6px}
.modal-search{margin:0}
.contact-list{display:flex;flex-direction:column;gap:2px}
.scrollable-list{max-height:240px;overflow-y:auto}
.contact-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:var(--r-md);cursor:pointer;transition:background .15s}
.contact-item:hover{background:var(--bgh)}
.contact-item.selected{background:var(--accents);border:1px solid var(--accentg)}
.contact-meta{flex:1;min-width:0}
.contact-name{font-weight:500;font-size:15px}
.contact-role{font-size:12px;color:var(--tm)}
.selected-members{display:flex;flex-wrap:wrap;gap:6px}
.selected-chip{display:flex;align-items:center;gap:6px;background:var(--accents);border:1px solid var(--accentg);border-radius:20px;padding:4px 10px 4px 6px;font-size:13px}
.selected-chip button{color:var(--tm);font-size:14px;line-height:1;transition:color .1s}
.selected-chip button:hover{color:var(--red)}
.request-item{display:flex;align-items:center;gap:10px;padding:12px;border-radius:var(--r-md);background:var(--bg3);border:1px solid var(--border);margin-bottom:6px}
/* Settings */
.settings-profile{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg3);border-radius:var(--r-lg);border:1px solid var(--border)}
.settings-name{font-weight:600;font-size:17px}
.settings-email{font-size:13px;color:var(--tm);margin-top:2px;font-family:var(--mono)}
.settings-role-txt{font-size:13px;color:var(--t2);margin-top:2px}
.settings-list{display:flex;flex-direction:column;gap:2px}
.settings-item{display:flex;align-items:center;gap:12px;padding:13px 12px;border-radius:var(--r-md);font-size:15px;color:var(--t1);transition:background .15s}
.settings-item:hover{background:var(--bgh)}
.settings-item.danger{color:var(--red)}
.settings-item svg{color:var(--tm);flex-shrink:0}
.settings-item.danger svg{color:var(--red)}
/* Chat info */
.chat-info-header{display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 0;border-bottom:1px solid var(--border)}
.chat-name{font-size:20px;font-weight:600}
.chat-sub{font-size:13px;color:var(--tm)}
.section-title{font-size:12px;font-weight:600;color:var(--t2);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}
.group-member-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--r-md)}
.member-tag{font-size:11px;color:var(--accent);background:var(--accents);padding:2px 6px;border-radius:6px;flex-shrink:0}
.group-settings-row{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--bg3);border-radius:var(--r-md);border:1px solid var(--border)}
.group-settings-label{font-size:14px;font-weight:500}
.group-settings-sub{font-size:12px;color:var(--tm);margin-top:2px}
/* Context menu */
.ctx-menu{position:fixed;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-md);padding:4px;z-index:9000;min-width:180px;box-shadow:0 8px 30px rgba(0,0,0,.5);animation:modalIn .15s ease}
.ctx-item{display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:var(--r-sm);font-size:14px;color:var(--t1);cursor:pointer;transition:background .1s}
.ctx-item:hover{background:var(--bgh)}
.ctx-item.danger{color:var(--red)}
/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--bg3);border:1px solid var(--borderl);border-radius:var(--r-md);padding:12px 20px;font-size:14px;color:var(--t1);z-index:9999;white-space:nowrap;animation:toastIn .3s ease;box-shadow:0 4px 20px rgba(0,0,0,.4)}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}

/* ════════════════════════ RESPONSIVE ════════════════════════ */
@media(max-width:640px){
  :root{--sidebar-w:100vw}
  .sidebar{position:fixed;inset:0;z-index:10;transition:transform .3s ease}
  .sidebar.hidden-mobile{transform:translateX(-100%)}
  .chat-area{position:fixed;inset:0}
  .back-btn{display:grid}
  .msg-bubble{max-width:85%}
  .backup-info{grid-template-columns:1fr}

  /* Admin: sidebar becomes a horizontal top bar */
  .admin-shell{flex-direction:column}
  .admin-sidebar{width:100%;min-width:0;flex-direction:row;align-items:center;padding:8px;gap:2px;border-right:none;border-bottom:1px solid var(--border);overflow-x:auto}
  .admin-logo{display:none}
  .admin-nav{flex-direction:row;flex:1;gap:2px}
  .admin-nav-item{flex-direction:column;gap:3px;padding:8px 12px;font-size:10px;white-space:nowrap;flex-shrink:0}
  .admin-nav-item span{display:block!important;font-size:10px}
  .admin-signout{flex-direction:row;gap:6px;padding:8px 10px;margin-top:0;flex-shrink:0}
  .admin-signout span{display:none}
  .admin-content{padding:16px}
  .admin-tab-header{flex-direction:column;align-items:stretch;gap:10px}
  .admin-tab-header h2{font-size:19px}
  .admin-tab-header .btn-primary{width:100%}

  /* Admin: employee table becomes stacked cards */
  .employee-table-wrap{border:none;overflow:visible}
  .employee-table,.employee-table tbody{display:block;width:100%}
  .employee-table thead{display:none}
  .employee-table tr{display:block;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-lg);margin-bottom:12px;padding:4px 14px}
  .employee-table td{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:13px}
  .employee-table tr td:last-child{border-bottom:none}
  .employee-table td::before{content:attr(data-label);font-size:11px;font-weight:600;color:var(--t2);text-transform:uppercase;letter-spacing:.4px;flex-shrink:0}
  .employee-table td[data-label="Employee"]{justify-content:flex-start;padding-top:14px}
  .employee-table td[data-label="Employee"]::before{display:none}
  .employee-table td[data-label="Actions"]{flex-direction:column;align-items:stretch;padding-bottom:14px}
  .employee-table td[data-label="Actions"]::before{margin-bottom:2px}
  .employee-table .table-actions{width:100%;justify-content:flex-start}
}
*{scrollbar-width:thin;scrollbar-color:var(--border) transparent}

/* ═══ Install banner ═══ */
.install-banner{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;background:var(--bg2);border:1px solid var(--borderl);border-radius:var(--r-lg);padding:12px 14px;z-index:9998;box-shadow:0 8px 30px rgba(0,0,0,.5);width:calc(100% - 32px);max-width:400px;animation:toastIn .35s ease}
.install-icon{width:40px;height:40px;background:var(--accents);border:1px solid var(--accentg);border-radius:10px;display:grid;place-items:center;color:var(--accent);flex-shrink:0}
.ios-step{display:flex;align-items:flex-start;gap:12px;padding:8px 0;font-size:14px;line-height:1.5}
.ios-step-num{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:600;flex-shrink:0}

/* ═══ Date/time mention (clickable reminder chip) ═══ */
.date-mention{
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 2px;
  cursor: pointer;
  color: inherit;
  transition: color .15s;
}
.date-mention:hover{ color: var(--accent); }

/* ═══ Prevent saving media via long-press / right-click ═══
   -webkit-touch-callout is the property that actually blocks iOS's
   long-press "Save to Photos / Copy / Share" menu — oncontextmenu
   alone does not stop it on iPhone/iPad. */
.no-save-media{
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  user-drag: none;
  pointer-events: auto; /* keep tap-to-view working, only block the callout/drag */
}

/* ═══ Visually-hidden file inputs (NOT display:none) ═══
   Several mobile browsers refuse to open the native photo/camera
   picker for a display:none input when triggered via JS .click() —
   this keeps the input "visible" to the browser while invisible
   to the user, which fixes photo/file picking on phones. */
.visually-hidden-input{
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
}

/* ═══ In-app file viewer (no download path exists for any file) ═══ */
.file-view-overlay{position:fixed;inset:0;background:rgba(0,0,0,.93);z-index:9999;display:flex;flex-direction:column}
.file-view-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;color:#fff;font-weight:600;font-size:15px;background:rgba(0,0,0,.4);flex-shrink:0}
.file-view-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:80vw}
.file-view-close{color:#fff;font-size:22px;background:rgba(255,255,255,.12);border-radius:50%;width:36px;height:36px;display:grid;place-items:center;border:none;cursor:pointer;flex-shrink:0}
.file-view-body{flex:1;overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:16px}
.file-view-loading{color:#8a9ab8;font-size:14px;margin:auto}
.file-view-error{color:#f3a5a5;font-size:14px;max-width:360px;text-align:center;margin:auto;line-height:1.6}
.file-view-text{width:100%;max-width:800px;background:#161b24;color:#e8edf5;padding:20px;border-radius:8px;font-family:var(--mono);font-size:13px;white-space:pre-wrap;word-break:break-word}
.file-view-unsupported{display:flex;flex-direction:column;align-items:center;gap:10px;color:#e8edf5;text-align:center;max-width:360px;margin:auto}
.file-view-unsupported .file-view-name{font-weight:600;font-size:16px;margin-top:4px}
.file-view-unsupported .file-view-size{color:#8a9ab8;font-size:13px}
.file-view-unsupported p{color:#8a9ab8;font-size:13px;line-height:1.6;margin-top:8px}

/* ── PDF viewer (PDF.js, rendered to canvas — no native browser chrome) ── */
.pdf-viewer{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
.pdf-toolbar{display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.08);padding:8px 16px;border-radius:24px;flex-shrink:0}
.pdf-nav-btn{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:20px;border:none;cursor:pointer;display:grid;place-items:center;transition:background .15s}
.pdf-nav-btn:hover:not(:disabled){background:rgba(255,255,255,.22)}
.pdf-nav-btn:disabled{opacity:.3;cursor:default}
.pdf-page-label{color:#fff;font-size:13px;font-family:var(--mono);min-width:90px;text-align:center}
.pdf-canvas-wrap{width:100%;max-width:900px;display:flex;justify-content:center}
#pdf-canvas{max-width:100%;height:auto;border-radius:6px;box-shadow:0 4px 30px rgba(0,0,0,.5);background:#fff}

/* ── DOCX viewer (Mammoth → HTML, shown as a paper page) ── */
.docx-page{background:#fff;color:#1a1a1a;max-width:760px;width:100%;padding:48px 56px;border-radius:6px;box-shadow:0 4px 30px rgba(0,0,0,.5);font-family:'DM Sans',serif;line-height:1.6;font-size:15px}
.docx-page h1,.docx-page h2,.docx-page h3{margin:18px 0 8px;color:#111}
.docx-page p{margin:0 0 12px}
.docx-page table{border-collapse:collapse;margin:12px 0}
.docx-page table td,.docx-page table th{border:1px solid #ccc;padding:6px 10px}
.docx-page img{max-width:100%}
.docx-page ul,.docx-page ol{margin:0 0 12px 24px}

/* ── Spreadsheet viewer (SheetJS → HTML table) ── */
.sheet-viewer{width:100%;max-width:100%;display:flex;flex-direction:column;gap:10px}
.sheet-tabs{display:flex;gap:6px;flex-wrap:wrap}
.sheet-tab{padding:6px 14px;border-radius:16px;background:rgba(255,255,255,.08);color:#cfd8e6;font-size:13px;border:none;cursor:pointer;transition:background .15s}
.sheet-tab:hover{background:rgba(255,255,255,.16)}
.sheet-tab.active{background:var(--accent);color:#fff}
.sheet-table-wrap{background:#fff;border-radius:8px;overflow:auto;max-height:75vh;box-shadow:0 4px 30px rgba(0,0,0,.5)}
.sheet-table-wrap table{border-collapse:collapse;font-size:13px;color:#1a1a1a}
.sheet-table-wrap td{border:1px solid #e2e5ea;padding:6px 12px;white-space:nowrap}
.sheet-table-wrap tr:first-child td{background:#f3f5f9;font-weight:600;position:sticky;top:0}
.sheet-table-wrap tr:nth-child(even){background:#fafbfc}

/* ═══ Chat gallery (media/links/docs) ═══ */
.gallery-tabs{display:flex;gap:6px;margin-bottom:4px}
.gallery-tab{flex:1;padding:8px;border-radius:var(--r-sm);background:var(--bg3);color:var(--t2);font-size:13px;font-weight:500;border:1px solid var(--border);transition:all .15s}
.gallery-tab:hover{background:var(--bgh)}
.gallery-tab.active{background:var(--accents);color:var(--accent);border-color:var(--accentg)}
.gallery-grid-media{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;max-height:400px;overflow-y:auto}
.gallery-media-item{position:relative;aspect-ratio:1;border-radius:var(--r-sm);overflow:hidden;cursor:pointer;background:var(--bg3)}
.gallery-media-item img,.gallery-media-item video{width:100%;height:100%;object-fit:cover}
.gallery-video-badge{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;background:rgba(0,0,0,.25);pointer-events:none}
.gallery-list{display:flex;flex-direction:column;gap:4px;max-height:400px;overflow-y:auto}
.gallery-link-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--r-md);transition:background .15s;color:var(--t1);text-decoration:none}
.gallery-link-item:hover{background:var(--bgh)}
.gallery-link-item svg{color:var(--accent);flex-shrink:0}
.gallery-link-url{font-size:13px;word-break:break-all}
.gallery-link-date{font-size:11px;color:var(--tm);margin-top:2px}
.gallery-empty{color:var(--tm);font-size:14px;text-align:center;padding:30px 0;grid-column:1/-1}

/* ═══ Search date-range panel ═══ */
.search-date-panel{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--bg3);border-bottom:1px solid var(--border);flex-shrink:0}
.text-input.sm{padding:7px 10px;font-size:13px;flex:1}
.btn-primary.sm{padding:7px 14px;font-size:13px}

/* ═══ Devices & Sessions ═══ */
.sessions-notice{background:var(--accents);border:1px solid var(--accentg);border-radius:var(--r-md);padding:10px 12px;font-size:12.5px;color:var(--t2);line-height:1.6;margin-bottom:4px}
.sessions-list{display:flex;flex-direction:column;gap:10px;max-height:420px;overflow-y:auto}
.session-item{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-md);padding:12px 14px}
.session-item.current{border-color:var(--accentg);background:var(--accents)}
.session-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.session-device{font-weight:600;font-size:14px}
.session-current-tag{font-size:11px;color:var(--accent);background:var(--accents);padding:2px 8px;border-radius:10px}
.session-row{display:flex;justify-content:space-between;gap:12px;font-size:12.5px;padding:3px 0;color:var(--t2)}
.session-row span:first-child{color:var(--tm)}
.session-row a{color:var(--accent)}

/* ═══ Forwarded tag — faded small label, not baked into message text ═══ */
.forwarded-tag{display:flex;align-items:center;gap:4px;font-size:10.5px;font-weight:500;color:var(--tm);opacity:.75;font-style:italic;margin-bottom:3px;vertical-align:super}