.preview-app{display:grid;width:100%;max-width:1120px;grid-template-columns:190px minmax(0,1fr);min-height:640px;overflow:hidden;border:1px solid var(--border);border-radius:8px;background:var(--bg-page);box-shadow:0 24px 70px #21252924;color:var(--text-primary);font-size:14px}.preview-sidebar{display:grid;grid-template-rows:auto 1fr auto;border-right:1px solid var(--border);background:var(--bg-card)}.preview-brand{display:flex;min-height:70px;align-items:center;border-bottom:1px solid var(--border);padding:0 16px;color:var(--brand);font-size:22px;font-weight:800}.preview-sidebar nav,.preview-user{display:grid;align-content:start;gap:4px;padding:18px 8px}.preview-sidebar nav span,.preview-user span{border-radius:6px;color:var(--text-muted);padding:9px 14px;font-weight:600}.preview-sidebar nav .active{background:var(--nav-active-bg);color:var(--nav-active-text)}.preview-user{border-top:1px solid var(--border);gap:0}.preview-user span{padding-block:5px;font-size:13px;font-weight:500}.preview-main{min-width:0;padding:26px clamp(16px,2vw,26px)}.preview-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}.preview-title-row{display:flex;align-items:center;gap:10px;margin-top:6px}.preview-title-row h3{color:var(--text-primary);font-size:26px;font-weight:700;line-height:1.25}.preview-link-button{border:0;background:transparent;color:var(--text-muted);cursor:pointer;font-size:13px}.preview-columns{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(420px,1fr);gap:16px}.preview-left,.preview-right{display:grid;align-content:start;gap:16px}.preview-card{display:grid;gap:14px;border:1px solid var(--border);border-radius:8px;background:var(--bg-card);padding:18px;box-shadow:var(--shadow)}.preview-field{display:grid;gap:4px}.preview-field span{color:var(--text-muted);font-size:13px;font-weight:700;text-transform:uppercase}.preview-field p{color:var(--text-primary);font-size:14px;line-height:1.5}.pipeline-card-preview{display:flex;align-items:center;gap:12px;overflow:hidden;border-left:3px solid #d6c25e;border-radius:6px;background:var(--bg-subtle);padding:8px 10px}.pipeline-card-preview select{max-width:170px}.pipeline-card-preview p{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pipeline-card-preview div{min-width:0;flex:1}.pipeline-card-preview select,.composer-toolbar select{border:1px solid var(--border);border-radius:6px;background:var(--bg-input);color:var(--text-primary);font-size:13px;outline:none;padding:7px 28px 7px 10px}.pipeline-card-preview button{border:0;background:transparent;color:var(--text-muted);cursor:pointer;font-size:18px}.channel-tabs,.composer-toolbar,.composer-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.channel-tabs button,.composer-toolbar button,.composer-actions button{display:inline-flex;min-height:36px;align-items:center;justify-content:center;gap:6px;border:1px solid var(--border);border-radius:6px;background:var(--bg-subtle);color:var(--text-secondary);cursor:pointer;padding:8px 14px;font-size:14px;font-weight:600;line-height:1.3}.channel-tabs button span{font-size:.9em}.channel-tabs button.active,.composer-toolbar button.active,.composer-actions button.primary,.composer-toolbar button.primary{border-color:var(--accent);background:var(--accent);color:var(--accent-text)}.message-history-preview,.next-action-preview{border-top:1px solid var(--border);padding-top:14px}.history-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.composer-copy{display:grid;gap:12px;border-top:1px solid var(--border);padding-top:16px}.composer-toolbar select{margin-left:auto}.composer-copy textarea{width:100%;min-height:150px;resize:vertical;border:1px solid var(--border);border-radius:8px;background:var(--bg-input);color:var(--text-primary);font:inherit;font-size:14px;line-height:1.5;outline:none;padding:12px}@media(max-width:1280px){.preview-app{min-height:640px}.preview-columns{grid-template-columns:minmax(280px,.72fr) minmax(420px,1fr)}.preview-left{gap:12px}.preview-card{padding:16px}}@media(max-width:1020px){.preview-app{overflow-x:auto}.preview-main{padding:22px}.preview-columns{grid-template-columns:minmax(280px,.72fr) minmax(420px,1fr)}.preview-left{grid-template-columns:1fr}}@media(max-width:900px){.preview-app{grid-template-columns:190px minmax(760px,1fr)}.preview-sidebar{display:grid}.preview-header{margin-bottom:14px}}@media(max-width:720px){.preview-main{padding:18px}.preview-columns{grid-template-columns:minmax(280px,.72fr) minmax(420px,1fr)}.preview-left{display:grid}.preview-header{display:flex}.preview-card{padding:16px}.channel-tabs,.composer-toolbar,.composer-actions{gap:6px}.channel-tabs button,.composer-toolbar button,.composer-actions button{min-height:34px;padding:7px 10px;font-size:13px}.composer-toolbar select{margin-left:0}.composer-copy textarea{min-height:132px}}@media(max-width:480px){.preview-main{padding:14px}.preview-card{gap:12px;padding:14px}.channel-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.channel-tabs button{padding-inline:6px}.composer-toolbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.composer-toolbar select,.composer-toolbar .primary{width:100%}.composer-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.composer-actions button{width:100%}}@media(max-width:380px){.channel-tabs,.composer-toolbar,.composer-actions{grid-template-columns:1fr}}