:root{
  --bg-deep:#0A0F1C; --bg-panel:#111B2E; --bg-panel-2:#16233B; --bg-panel-3:#1C2C48;
  --accent-cyan:#4CD6E8; --accent-cyan-dim:#2E7C8C; --accent-amber:#E8A94F;
  --text-primary:#EAF0F6; --text-muted:#8B9AB0; --border-hair:#223350;
  --radius-md:10px; --font-display:'Vazirmatn',sans-serif; --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
body{margin:0;background:var(--bg-deep);color:var(--text-primary);font-family:var(--font-display);line-height:1.7;min-height:100vh;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

.acc-header{position:sticky;top:0;z-index:50;background:rgba(10,15,28,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-hair);}
.acc-header-inner{max-width:1100px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.acc-brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--accent-cyan);}
.acc-brand span.mark, .acc-brand img.mark{font-size:20px;width:26px;height:26px;border-radius:50%;object-fit:cover;}
.acc-nav{display:flex;align-items:center;gap:18px;font-size:14px;flex-wrap:wrap;}
.acc-nav a{color:var(--text-muted);padding:6px 4px;border-bottom:2px solid transparent;transition:.2s var(--ease);}
.acc-nav a:hover,.acc-nav a.active{color:var(--accent-cyan);border-color:var(--accent-cyan);}
.acc-user-chip{display:flex;align-items:center;gap:8px;background:var(--bg-panel-2);padding:6px 12px;border-radius:999px;border:1px solid var(--border-hair);font-size:13px;}
.acc-user-chip img{width:26px;height:26px;border-radius:50%;object-fit:cover;background:var(--bg-panel-3);}
.acc-logout-btn{background:none;border:1px solid var(--border-hair);color:var(--text-muted);padding:5px 12px;border-radius:8px;font-family:inherit;cursor:pointer;font-size:12px;transition:.2s;}
.acc-logout-btn:hover{color:#ff8888;border-color:#ff8888;}

.acc-main{max-width:900px;margin:0 auto;padding:36px 20px 80px;}
.acc-card{background:var(--bg-panel);border:1px solid var(--border-hair);border-radius:var(--radius-md);padding:28px;margin-bottom:20px;}
.acc-title{font-size:22px;font-weight:800;margin:0 0 6px;}
.acc-sub{color:var(--text-muted);font-size:14px;margin:0 0 22px;}

.acc-field{margin-bottom:16px;}
.acc-field label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px;}
.acc-field input,.acc-field textarea{width:100%;background:var(--bg-panel-2);border:1px solid var(--border-hair);border-radius:8px;padding:11px 13px;color:var(--text-primary);font-family:inherit;font-size:14px;transition:.2s;}
.acc-field input:focus,.acc-field textarea:focus{outline:none;border-color:var(--accent-cyan);}
.acc-field textarea{resize:vertical;min-height:90px;}
.acc-row2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:600px){.acc-row2{grid-template-columns:1fr;}}

.acc-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent-cyan);color:#04121a;border:none;border-radius:8px;padding:12px 22px;font-family:inherit;font-weight:700;font-size:14px;cursor:pointer;transition:.2s var(--ease);}
.acc-btn:hover{filter:brightness(1.1);transform:translateY(-1px);}
.acc-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}
.acc-btn-outline{background:none;border:1px solid var(--border-hair);color:var(--text-primary);}
.acc-btn-outline:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);}
.acc-btn-block{width:100%;}

.acc-tabs{display:flex;gap:4px;background:var(--bg-panel-2);border-radius:10px;padding:4px;margin-bottom:22px;}
.acc-tab{flex:1;text-align:center;padding:9px;border-radius:7px;cursor:pointer;font-size:14px;color:var(--text-muted);transition:.2s;}
.acc-tab.active{background:var(--accent-cyan);color:#04121a;font-weight:700;}

.acc-msg{padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px;}
.acc-msg.error{background:rgba(255,90,90,.12);color:#ff9d9d;border:1px solid rgba(255,90,90,.3);}
.acc-msg.ok{background:rgba(76,214,120,.12);color:#7be89b;border:1px solid rgba(76,214,120,.3);}
.acc-msg.info{background:rgba(76,214,232,.1);color:var(--accent-cyan);border:1px solid rgba(76,214,232,.25);}

.acc-avatar-picker{display:flex;align-items:center;gap:16px;margin-bottom:22px;}
.acc-avatar-picker img{width:74px;height:74px;border-radius:50%;object-fit:cover;background:var(--bg-panel-3);border:2px solid var(--border-hair);}
.acc-avatar-picker label.upload-btn{background:var(--bg-panel-2);border:1px solid var(--border-hair);padding:8px 14px;border-radius:8px;font-size:13px;cursor:pointer;}
.acc-avatar-picker label.upload-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);}
label.upload-btn{display:inline-flex;align-items:center;gap:6px;background:var(--bg-panel-2);border:1px solid var(--border-hair);padding:9px 16px;border-radius:8px;font-size:13px;cursor:pointer;transition:.2s var(--ease);}
label.upload-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);}
label.upload-btn input[type=file]{display:none;}
.acc-avatar-picker input[type=file]{display:none;}

.acc-not-configured{max-width:600px;margin:60px auto;text-align:center;padding:0 20px;}
.acc-not-configured .icon{font-size:44px;margin-bottom:16px;}

/* ---------- Messages / chat ---------- */
.msg-layout{display:grid;grid-template-columns:280px 1fr;gap:0;background:var(--bg-panel);border:1px solid var(--border-hair);border-radius:var(--radius-md);overflow:hidden;height:calc(100vh - 170px);min-height:480px;}
@media(max-width:760px){.msg-layout{grid-template-columns:1fr;height:auto;}}
.msg-sidebar{border-inline-start:1px solid var(--border-hair);display:flex;flex-direction:column;overflow-y:auto;}
.msg-sidebar-head{padding:16px;border-bottom:1px solid var(--border-hair);}
.msg-sidebar-head input{width:100%;background:var(--bg-panel-2);border:1px solid var(--border-hair);border-radius:8px;padding:9px 12px;color:var(--text-primary);font-family:inherit;font-size:13px;}
.msg-conv-item{display:flex;align-items:center;gap:10px;padding:12px 16px;cursor:pointer;border-bottom:1px solid var(--border-hair);transition:.15s;}
.msg-conv-item:hover,.msg-conv-item.active{background:var(--bg-panel-2);}
.msg-conv-item img{width:38px;height:38px;border-radius:50%;object-fit:cover;background:var(--bg-panel-3);flex-shrink:0;}
.msg-conv-name{font-size:14px;font-weight:600;}
.msg-conv-preview{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:170px;}
.msg-unread-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-cyan);margin-inline-start:auto;flex-shrink:0;}
.msg-empty{padding:30px 16px;color:var(--text-muted);font-size:13px;text-align:center;}

.msg-thread{display:flex;flex-direction:column;height:100%;}
.msg-thread-head{padding:14px 18px;border-bottom:1px solid var(--border-hair);display:flex;align-items:center;gap:10px;}
.msg-thread-head img{width:34px;height:34px;border-radius:50%;object-fit:cover;background:var(--bg-panel-3);}
.msg-thread-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px;}
.msg-bubble{max-width:70%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.6;}
.msg-bubble.mine{align-self:flex-end;background:var(--accent-cyan);color:#04121a;border-bottom-left-radius:4px;}
.msg-bubble.theirs{align-self:flex-start;background:var(--bg-panel-2);border:1px solid var(--border-hair);border-bottom-right-radius:4px;}
.msg-bubble img.attachment{max-width:220px;border-radius:8px;margin-top:6px;cursor:pointer;}
.msg-bubble .attachment-audio{max-width:220px;margin-top:6px;display:block;}
.msg-bubble .attachment-file-link{display:block;margin-top:6px;color:inherit;text-decoration:underline;font-size:.85rem;}
.msg-time{font-size:10px;opacity:.65;margin-top:4px;}
.msg-thread-empty{margin:auto;color:var(--text-muted);text-align:center;padding:20px;}
.msg-composer{display:flex;align-items:center;gap:8px;padding:14px 16px;border-top:1px solid var(--border-hair);}
.msg-composer input[type=text]{flex:1;background:var(--bg-panel-2);border:1px solid var(--border-hair);border-radius:20px;padding:11px 16px;color:var(--text-primary);font-family:inherit;font-size:14px;}
.msg-attach-btn,.msg-send-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--border-hair);background:var(--bg-panel-2);color:var(--text-primary);cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:16px;}
.msg-send-btn{background:var(--accent-cyan);color:#04121a;border:none;}
.msg-composer input[type=file]{display:none;}
.msg-preview-file{font-size:12px;color:var(--accent-cyan);padding:0 16px 8px;}