:root{
  --sc-bg:#f4f7f9;
  --sc-panel:#ffffff;
  --sc-panel-soft:#f8fafc;
  --sc-panel-hover:#f1f5f7;
  --sc-border:#e3e8ee;
  --sc-border-strong:#cfd8e2;
  --sc-text:#17212b;
  --sc-muted:#667085;
  --sc-subtle:#98a2b3;
  --sc-primary:#0f766e;
  --sc-primary-hover:#115e59;
  --sc-primary-soft:#e8f5f3;
  --sc-success:#067647;
  --sc-success-soft:#ecfdf3;
  --sc-warning:#b54708;
  --sc-warning-soft:#fffaeb;
  --sc-danger:#b42318;
  --sc-danger-soft:#fef3f2;
  --sc-info:#175cd3;
  --sc-info-soft:#eff8ff;
  --sc-shadow:0 12px 36px rgba(16,24,40,.08);
  --sc-radius:16px;
  --sc-radius-sm:10px;
  --sc-sidebar-width:350px;
  --sc-detail-width:310px;
  --sc-head-height:68px;
  --sc-font:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{font-family:var(--sc-font);background:var(--sc-bg);color:var(--sc-text)}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
.sc-hidden{display:none!important}
.sc-grow{flex:1 1 auto;min-width:0}
.sc-muted{color:var(--sc-muted)}
.sc-subtle{color:var(--sc-subtle)}
.sc-truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.smartchats-app{
  min-height:640px;
  height:calc(100vh - 24px);
  margin:12px;
  display:grid;
  grid-template-columns:var(--sc-sidebar-width) minmax(0,1fr) var(--sc-detail-width);
  overflow:hidden;
  background:var(--sc-panel);
  border:1px solid var(--sc-border);
  border-radius:var(--sc-radius);
  box-shadow:var(--sc-shadow);
}

.sc-sidebar,.sc-chat,.sc-detail{min-width:0;min-height:0;background:var(--sc-panel)}
.sc-sidebar{display:flex;flex-direction:column;border-right:1px solid var(--sc-border)}
.sc-chat{display:grid;grid-template-rows:var(--sc-head-height) minmax(0,1fr) auto;position:relative}
.sc-detail{overflow-y:auto;border-left:1px solid var(--sc-border)}

.sc-sidebar-head,.sc-chat-head,.sc-section-head{
  height:var(--sc-head-height);
  padding:0 18px;
  display:flex;
  align-items:center;
  gap:12px;
  border-bottom:1px solid var(--sc-border);
  background:#fff;
}
.sc-sidebar-head,.sc-chat-head{justify-content:space-between}

.sc-brand{display:flex;align-items:center;gap:10px;min-width:0}
.sc-brand-mark{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;
  border-radius:11px;background:var(--sc-primary);color:#fff;font-weight:900;letter-spacing:-.04em
}
.sc-brand-copy{min-width:0}
.sc-brand-title{display:block;font-size:15px;font-weight:800;line-height:1.1}
.sc-brand-subtitle{display:block;margin-top:3px;font-size:11px;color:var(--sc-muted)}

.sc-icon-btn,.sc-btn{
  border:1px solid var(--sc-border);
  background:#fff;
  color:var(--sc-text);
  transition:.18s ease
}
.sc-icon-btn:hover,.sc-btn:hover{background:var(--sc-panel-hover);border-color:var(--sc-border-strong)}
.sc-icon-btn{width:38px;height:38px;padding:0;display:inline-grid;place-items:center;border-radius:10px}
.sc-btn{min-height:38px;padding:8px 13px;border-radius:10px;font-size:13px;font-weight:700}
.sc-btn-primary{background:var(--sc-primary);border-color:var(--sc-primary);color:#fff}
.sc-btn-primary:hover{background:var(--sc-primary-hover);border-color:var(--sc-primary-hover)}
.sc-btn-danger{background:var(--sc-danger-soft);border-color:#fecdca;color:var(--sc-danger)}
.sc-btn:disabled,.sc-icon-btn:disabled{opacity:.55;cursor:not-allowed}

.sc-search{padding:12px 14px;border-bottom:1px solid var(--sc-border)}
.sc-input-wrap{position:relative}
.sc-input-icon{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  color:var(--sc-subtle);pointer-events:none;font-size:17px
}
.sc-input,.sc-textarea,.sc-select{
  width:100%;border:1px solid var(--sc-border);background:#fff;color:var(--sc-text);
  border-radius:10px;outline:none;transition:.18s ease
}
.sc-input{height:40px;padding:0 12px}
.sc-input-wrap .sc-input{padding-left:36px}
.sc-textarea{min-height:76px;padding:10px 12px;resize:vertical;line-height:1.45}
.sc-select{height:40px;padding:0 10px}
.sc-input:focus,.sc-textarea:focus,.sc-select:focus{
  border-color:#65b9b1;box-shadow:0 0 0 3px rgba(15,118,110,.10)
}

.sc-empty{padding:28px 20px;text-align:center;color:var(--sc-muted);font-size:12px}
.sc-empty strong{display:block;margin-bottom:6px;color:var(--sc-text);font-size:14px}

.sc-loader{
  width:23px;height:23px;border:2px solid var(--sc-border);
  border-top-color:var(--sc-primary);border-radius:50%;animation:sc-spin .7s linear infinite
}
@keyframes sc-spin{to{transform:rotate(360deg)}}

.sc-avatar{
  width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;
  border-radius:50%;background:var(--sc-primary-soft);color:var(--sc-primary);
  font-size:12px;font-weight:900;text-transform:uppercase
}
.sc-avatar-lg{width:66px;height:66px;font-size:20px}

.sc-status{
  display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:999px;
  font-size:11px;font-weight:800;text-transform:capitalize
}
.sc-status:before{content:"";width:7px;height:7px;flex:0 0 7px;border-radius:50%;background:currentColor}
.sc-status-open,.sc-status-active,.sc-status-sent,.sc-status-delivered,.sc-status-read{
  color:var(--sc-success);background:var(--sc-success-soft)
}
.sc-status-pending,.sc-status-queued{color:var(--sc-warning);background:var(--sc-warning-soft)}
.sc-status-failed,.sc-status-error,.sc-status-closed{color:var(--sc-danger);background:var(--sc-danger-soft)}
.sc-status-received{color:var(--sc-info);background:var(--sc-info-soft)}

.sc-chat-person{display:flex;align-items:center;gap:11px;min-width:0}
.sc-chat-title{font-size:14px;font-weight:800;line-height:1.25}
.sc-chat-meta{margin-top:3px;font-size:11px;color:var(--sc-muted)}
.sc-chat-actions{display:flex;align-items:center;gap:8px}

.sc-message-scroll{
  overflow-y:auto;padding:20px 22px 26px;scroll-behavior:smooth;
  background:
    linear-gradient(rgba(248,250,252,.95),rgba(248,250,252,.95)),
    radial-gradient(circle at 1px 1px,rgba(15,118,110,.07) 1px,transparent 0);
  background-size:auto,20px 20px
}
.sc-loading-area{height:100%;min-height:120px;display:grid;place-items:center}

.sc-toast-wrap{
  position:fixed;right:20px;bottom:20px;z-index:9999;
  width:min(360px,calc(100vw - 40px));display:grid;gap:8px
}
.sc-toast{
  padding:12px 14px;border:1px solid var(--sc-border);border-radius:12px;background:#fff;
  box-shadow:var(--sc-shadow);font-size:13px;line-height:1.4;animation:sc-toast-in .18s ease-out
}
.sc-toast-success{border-left:4px solid var(--sc-success)}
.sc-toast-error{border-left:4px solid var(--sc-danger)}
.sc-toast-warning{border-left:4px solid var(--sc-warning)}
.sc-toast-info{border-left:4px solid var(--sc-info)}
@keyframes sc-toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.sc-section-head strong{font-size:13px}
.sc-detail-block{padding:18px;border-bottom:1px solid var(--sc-border)}
.sc-detail-profile{text-align:center;padding-top:24px}
.sc-detail-profile .sc-avatar{margin:0 auto 10px}
.sc-detail-name{font-size:15px;font-weight:800}
.sc-detail-phone{margin-top:4px;font-size:12px;color:var(--sc-muted)}
.sc-detail-title{
  margin:0 0 12px;font-size:11px;font-weight:900;text-transform:uppercase;
  letter-spacing:.05em;color:var(--sc-muted)
}
.sc-kv{display:grid;grid-template-columns:95px minmax(0,1fr);gap:8px 12px;align-items:start;font-size:12px}
.sc-kv+.sc-kv{margin-top:9px}
.sc-kv-label{color:var(--sc-muted)}
.sc-kv-value{overflow-wrap:anywhere}

.sc-tags{display:flex;flex-wrap:wrap;gap:7px}
.sc-tag{
  display:inline-flex;align-items:center;padding:5px 8px;border-radius:999px;
  background:var(--sc-primary-soft);color:var(--sc-primary-hover);font-size:11px;font-weight:800
}

.sc-note{
  padding:10px 11px;border:1px solid var(--sc-border);border-radius:10px;
  background:var(--sc-panel-soft);font-size:12px;line-height:1.45
}
.sc-note+.sc-note{margin-top:8px}
.sc-note-meta{margin-top:6px;font-size:10px;color:var(--sc-muted)}
.sc-form-row{display:grid;gap:7px}
.sc-form-row+.sc-form-row{margin-top:10px}
.sc-label{font-size:11px;font-weight:800;color:var(--sc-muted)}

.sc-skeleton{position:relative;overflow:hidden;background:#eef2f5;border-radius:8px}
.sc-skeleton:after{
  content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);
  animation:sc-shimmer 1.2s infinite
}
@keyframes sc-shimmer{to{transform:translateX(100%)}}