:root{--admin-bg:#f6f7f9;--admin-panel:#fff;--admin-text:#1d2433;--admin-muted:#687386;--admin-border:#e4e8ef;--admin-dark:#18202f;--admin-accent:#5162e9;--admin-success:#22865d;--admin-warning:#a46c14;--admin-danger:#b43f4c}*{box-sizing:border-box}.admin-shell{grid-template-columns:250px minmax(0,1fr);background:var(--admin-bg);color:var(--admin-text)}.admin-shell,.auth-shell{min-height:100vh;display:grid;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.auth-shell{place-items:center;padding:28px;background:linear-gradient(135deg,#111827,#26324d);color:var(--admin-text)}.auth-card{width:min(100%,480px);background:#fff;border-radius:22px;padding:30px;box-shadow:0 30px 80px #0005}.auth-card h1{margin:6px 0 10px;font-size:32px}.auth-brand{padding:0 0 24px}.auth-brand .brand-mark{background:var(--admin-dark);color:#fff}.auth-brand span,.auth-brand strong{color:var(--admin-dark)}.auth-submit{width:100%;margin-top:4px}.auth-switches{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:20px;padding-top:18px;border-top:1px solid var(--admin-border)}.link-button,.logout-link{border:0;background:transparent;padding:0;color:var(--admin-accent);font:inherit;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.logout-link{color:#ffffffc8;font-size:12px;margin-top:8px}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:28px 18px 20px;background:var(--admin-dark);color:#fff}.brand{display:flex;align-items:center;gap:12px;padding:0 10px 28px}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:800;background:#fff;color:var(--admin-dark)}.brand span,.brand strong{display:block}.brand strong{font-size:18px}.brand span{font-size:12px;opacity:.62}.nav-list{display:grid;grid-gap:7px;gap:7px}.nav-item{border:0;background:transparent;color:#ffffffaa;padding:12px 14px;border-radius:10px;display:flex;align-items:center;gap:10px;text-align:left;cursor:pointer;font:inherit}.nav-item:hover{background:#ffffff0f;color:#fff}.nav-item.active{background:#ffffff1f;color:#fff}.nav-item span{width:20px;text-align:center}.sidebar-footer{margin-top:auto;padding:12px;border-top:1px solid #ffffff19;font-size:12px;color:#ffffffad}.status-dot,.tenant-pill span{display:inline-block;width:8px;height:8px;border-radius:999px;background:#45d58a;margin-right:7px}.workspace{padding:32px 42px 60px}.topbar{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:30px}.topbar h1{margin:3px 0 0;font-size:30px}.eyebrow{margin:0;font-size:11px;letter-spacing:.14em;font-weight:800;color:#8993a5}.tenant-pill{background:#fff;border:1px solid var(--admin-border);padding:9px 13px;border-radius:999px;font-size:12px;color:var(--admin-muted)}.content-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:18px;gap:18px}.hero-card{grid-column:1/-1;padding:28px;border-radius:20px;background:linear-gradient(135deg,#1a2232,#2b3651);color:#fff;display:flex;justify-content:space-between;gap:24px;align-items:end}.hero-card h2{font-size:28px;margin:14px 0 8px}.hero-card p{margin:0;color:#ffffffb3;max-width:680px}.metric-card,.panel{background:var(--admin-panel);border:1px solid var(--admin-border);border-radius:16px;box-shadow:0 10px 30px #1922320a}.metric-card{padding:20px}.metric-card small,.metric-card span{display:block;color:var(--admin-muted)}.metric-card strong{display:block;font-size:21px;margin:8px 0 4px}.metric-card small{font-size:12px}.panel{padding:24px}.panel.wide{grid-column:1/-1}.compact-panel{padding:16px 18px}.panel-heading{display:flex;justify-content:space-between;align-items:start;gap:16px;margin-bottom:22px}.panel h2,.panel h3{margin:4px 0 0}.panel h2{font-size:25px}.panel h3{font-size:19px}.muted{color:var(--admin-muted);line-height:1.65}.badge{display:inline-flex;align-items:center;border-radius:999px;padding:6px 9px;font-size:11px;font-weight:800;background:#eef1f6;color:#5f697a}.badge.success{background:#e8f6ef;color:var(--admin-success)}.badge.warning{background:#fff4df;color:var(--admin-warning)}.primary,.secondary{border:0;border-radius:11px;padding:12px 16px;font:inherit;font-weight:750;cursor:pointer}.primary{background:var(--admin-accent);color:#fff}.secondary{background:#eef1f6;color:#3f4959}.primary:disabled,.secondary:disabled{opacity:.6;cursor:wait}.two-column{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);grid-gap:18px;gap:18px;align-items:start}.form-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px;margin-top:24px}label{display:grid;grid-gap:7px;gap:7px;font-size:13px;font-weight:700;color:#414a5a;margin-bottom:16px}label small{font-weight:500;color:var(--admin-muted)}input,select,textarea{width:100%;border:1px solid #dce1e9;border-radius:10px;background:#fff;color:var(--admin-text);padding:11px 12px;font:inherit;outline:none}input:focus,select:focus,textarea:focus{border-color:#8f9af0;box-shadow:0 0 0 3px #5162e91a}textarea{resize:vertical;min-height:200px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;line-height:1.55}.preview-panel{min-height:530px}.email-preview{min-height:390px;border:1px solid var(--admin-border);border-radius:12px;background:#fff;padding:26px;overflow:auto}.notice{margin-top:16px;padding:13px 14px;border-radius:10px;font-size:13px;line-height:1.5}.notice.error{background:#fff0f1;color:var(--admin-danger);border:1px solid #f4d2d6}.notice.success{background:#eaf8f1;color:#1d7451;border:1px solid #ccebdc}.empty-state{min-height:260px;display:grid;place-items:center;align-content:center;text-align:center;border:1px dashed #ced5df;border-radius:14px;color:var(--admin-muted)}.empty-state>div{font-size:30px;margin-bottom:10px}.empty-state h3{color:var(--admin-text);margin:0}.empty-state p{max-width:470px;margin-bottom:0}.settings-grid{grid-template-columns:1fr 1fr}.session-key{display:grid;grid-template-columns:minmax(220px,1fr) minmax(260px,1.5fr) auto;align-items:center;grid-gap:14px;gap:14px;margin-bottom:18px}.session-key strong{font-size:13px}.audience-layout{margin-top:0}.toolbar{display:flex;justify-content:flex-end;margin-bottom:14px}.stack{display:grid;grid-gap:18px;gap:18px}.data-list{display:grid;grid-gap:10px;gap:10px}.data-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 14px;border:1px solid var(--admin-border);border-radius:12px}.data-row small,.data-row strong{display:block}.data-row small{margin-top:3px;color:var(--admin-muted);font-size:12px}.audience-notice{margin-top:18px}@media(max-width:980px){.admin-shell{grid-template-columns:78px minmax(0,1fr)}.brand span,.brand strong,.nav-item{font-size:0}.nav-item{justify-content:center;padding:13px}.nav-item span{font-size:16px}.sidebar-footer{display:none}.workspace{padding:26px 22px 50px}.content-grid{grid-template-columns:1fr 1fr}.session-key,.two-column{grid-template-columns:1fr}}@media(max-width:680px){.auth-shell{padding:14px}.auth-card{padding:22px}.admin-shell{display:block}.sidebar{position:static;width:100%;height:auto;padding:14px}.brand{padding-bottom:14px}.brand span,.brand strong{font-size:revert}.nav-list{display:flex;overflow-x:auto}.nav-item{min-width:54px}.workspace{padding:22px 14px 40px}.topbar{align-items:flex-start}.tenant-pill{display:none}.content-grid,.form-grid,.settings-grid{grid-template-columns:1fr}.hero-card,.metric-card,.panel{grid-column:1}.hero-card{display:block}.hero-card .primary{margin-top:20px}.data-row{align-items:flex-start;flex-direction:column}}