:root { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: #202124; background: #f4f5f7; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input, textarea, select { font: inherit; }
button { border: 0; border-radius: 9px; padding: 10px 15px; cursor: pointer; background: #202124; color: white; }
button:disabled { opacity: .55; cursor: default; }
button.secondary { background: #eceef1; color: #202124; }
button.danger { background: #8b1e2d; }
.shell { min-height: 100vh; }
.hidden { display: none !important; }
.muted { color: #6d7278; font-size: 14px; }
.error { color: #a4001d; min-height: 1.2em; margin: 8px 0 0; }
.login-card { width: min(420px, calc(100% - 32px)); margin: 12vh auto; background: white; padding: 28px; border-radius: 16px; box-shadow: 0 12px 40px rgba(0,0,0,.08); }
.login-card h1 { margin: 0 0 6px; }
.login-card form { display: grid; gap: 14px; margin-top: 24px; }
.login-card label { display: grid; gap: 6px; font-size: 14px; }
.login-card input { width: 100%; padding: 11px 12px; border: 1px solid #cfd3d8; border-radius: 9px; }
.app { min-height: 100vh; display: flex; flex-direction: column; }
.topbar { min-height: 62px; padding: 12px 18px; background: white; border-bottom: 1px solid #e1e4e8; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar strong { display: block; font-size: 18px; }
.toolbar { padding: 10px 14px; display: flex; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid #e1e4e8; background: #fafafa; }
.toolbar select { padding: 8px 10px; border: 1px solid #cfd3d8; border-radius: 8px; background: white; }
.workspace-grid { flex: 1; display: grid; grid-template-columns: minmax(280px, 34%) 1fr; min-height: 0; }
.conversation-list { border-right: 1px solid #e1e4e8; background: white; overflow: auto; max-height: calc(100vh - 114px); }
.conversation { display: block; width: 100%; text-align: left; background: white; color: #202124; border-radius: 0; border-bottom: 1px solid #eef0f2; padding: 14px; }
.conversation:hover, .conversation.selected { background: #f0f3f6; }
.conversation .line { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.conversation .preview { color: #5f646a; margin-top: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge { display: inline-flex; min-width: 22px; height: 22px; padding: 0 7px; align-items: center; justify-content: center; border-radius: 12px; background: #202124; color: white; font-size: 12px; }
.channel { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: #747a80; }
.dialog-panel { min-width: 0; background: #f7f8fa; }
.empty { padding: 48px 24px; text-align: center; color: #7b8086; }
.dialog-view { height: calc(100vh - 114px); display: flex; flex-direction: column; }
.dialog-head { background: white; padding: 13px 16px; border-bottom: 1px solid #e1e4e8; display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.dialog-head h2 { margin: 0 0 2px; font-size: 18px; }
.actions { display: flex; gap: 7px; flex-wrap: wrap; justify-content: flex-end; }
.messages { flex: 1; overflow: auto; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.message { max-width: min(78%, 720px); padding: 10px 12px; border-radius: 13px; background: white; box-shadow: 0 1px 2px rgba(0,0,0,.05); }
.message.outbound { align-self: flex-end; background: #e8edf2; }
.message.system { align-self: center; background: transparent; box-shadow: none; color: #71767c; font-size: 13px; }
.message .time { margin-top: 6px; font-size: 11px; color: #858a90; }
.message .failed { color: #a4001d; font-size: 12px; margin-top: 6px; }
.attachment { display: inline-block; margin-top: 6px; padding: 7px 9px; border: 1px solid #d7dbe0; border-radius: 8px; color: inherit; text-decoration: none; }
.reply-box { background: white; border-top: 1px solid #e1e4e8; padding: 12px; }
.reply-box textarea { width: 100%; resize: vertical; border: 1px solid #cfd3d8; border-radius: 9px; padding: 10px; }
.reply-actions { margin-top: 8px; display: flex; gap: 10px; align-items: center; }
.reply-actions button { margin-left: auto; }
.file-button { cursor: pointer; background: #eceef1; padding: 9px 12px; border-radius: 8px; }
.file-button input { display: none; }
@media (max-width: 760px) {
  .workspace-grid { grid-template-columns: 1fr; }
  .conversation-list { max-height: 36vh; border-right: 0; border-bottom: 1px solid #e1e4e8; }
  .dialog-view { height: calc(64vh - 114px); min-height: 440px; }
  .dialog-head { align-items: flex-start; flex-direction: column; }
  .message { max-width: 90%; }
}
.top-actions{display:flex;gap:8px}.notice{padding:10px 14px;background:#eef4ff;border-radius:9px;margin:12px}.settings-page{padding:18px;max-width:1180px;width:100%;margin:0 auto}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.settings-card{background:#fff;border:1px solid #e1e4e8;border-radius:14px;padding:18px;margin-bottom:16px}.settings-card h2{margin-top:0}.settings-card label{display:grid;gap:6px;margin:10px 0}.settings-card input,.settings-card select,.settings-card textarea{padding:10px;border:1px solid #cfd3d8;border-radius:8px;width:100%}.settings-card textarea{resize:vertical;line-height:1.45}.settings-card pre{white-space:pre-wrap;background:#f7f8fa;padding:10px;border-radius:8px}.settings-row{display:grid;grid-template-columns:1.6fr 1fr auto;gap:8px;align-items:center;padding:9px 0;border-top:1px solid #eee}.settings-row:first-child{border-top:0}.settings-row button{width:auto}@media(max-width:760px){.settings-grid{grid-template-columns:1fr}.settings-row{grid-template-columns:1fr}.top-actions{width:100%;flex-wrap:wrap}}
.brand-block{display:flex;gap:10px;align-items:center}.brand-logo{width:40px;height:40px;border-radius:8px;object-fit:contain;background:#fff;border:1px solid #e1e4e8}.subform{margin-top:16px;padding-top:12px;border-top:1px solid #eee}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 14px}.inline-actions{display:flex;gap:8px;flex-wrap:wrap}.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.metric{background:#f7f8fa;border-radius:9px;padding:10px}.metric strong{display:block;font-size:22px}.staff-controls,.channel-controls{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.settings-row select{padding:7px;border:1px solid #cfd3d8;border-radius:8px}.settings-row .secondary{padding:7px 10px}.owner-label{font-weight:600;color:#555}@media(max-width:900px){.form-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.form-grid,.metric-grid{grid-template-columns:1fr}}

.login-legal{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;font-size:.86rem}.login-legal a,.button-link{color:#2357a6}.button-link{display:inline-flex;align-items:center;padding:9px 12px;border:1px solid #cfd3d8;border-radius:8px;text-decoration:none}.inline-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}