:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#6b7280;--line:#e5e9f0;--primary:#2563eb;--primary2:#1d4ed8;--danger:#b42318;--success:#157f3c;--dark:#0f172a;--radius:16px}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}a{color:var(--primary);text-decoration:none}button,input,select,textarea{font:inherit}.sidebar{position:fixed;inset:0 auto 0 0;width:245px;background:linear-gradient(180deg,#0f172a,#111c36);color:#fff;padding:22px 16px;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);display:grid;place-items:center;color:#fff;font-weight:900}.brand strong,.brand small{display:block}.brand small{font-size:12px;color:#8a94a6;margin-top:2px}.brand.white small{color:#9aa6be}.sidebar nav{margin-top:34px;display:grid;gap:8px}.sidebar nav a{color:#cbd5e1;padding:11px 13px;border-radius:10px}.sidebar nav a:hover,.sidebar nav a.active{background:rgba(255,255,255,.09);color:#fff}.side-footer{margin-top:auto;border-top:1px solid rgba(255,255,255,.1);padding-top:16px;display:grid;gap:7px;font-size:12px;color:#9aa6be}.side-footer a{color:#fff}.app{margin-left:245px;min-height:100vh}.topbar{height:78px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 34px;position:sticky;top:0;z-index:5}.topbar h1{font-size:22px;margin:0}.site-link{font-size:14px}.content{padding:30px;max-width:1500px;margin:auto}.hero{padding:30px;border-radius:20px;background:linear-gradient(135deg,#0f172a,#1e3a8a);color:#fff;display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;box-shadow:0 18px 48px rgba(15,23,42,.18)}.hero h2{font-size:32px;margin:5px 0 8px}.hero p{margin:0;color:#dbeafe}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.15em;color:#93c5fd}.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin:20px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 6px 20px rgba(15,23,42,.04)}.stat strong{font-size:27px;display:block}.stat span{font-size:12px;color:var(--muted);margin-top:4px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 6px 22px rgba(15,23,42,.04);margin-bottom:20px}.card h3{margin:0 0 15px}.grid{display:grid;gap:20px}.grid.two{grid-template-columns:1fr 1fr}.sidebar-grid{grid-template-columns:330px 1fr}.section-head,.section-actions{display:flex;align-items:center;justify-content:space-between;gap:15px}.section-head{margin-bottom:14px}.section-head h3{margin:0}.section-actions{margin-bottom:20px}.muted{color:var(--muted);font-size:13px}.btn{border:1px solid #cfd6e4;background:#fff;color:#253147;border-radius:9px;padding:10px 15px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn:hover{background:#f8fafc}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary2)}.btn.small{padding:8px 11px;font-size:13px}.btn:disabled{opacity:.45;cursor:not-allowed}.full-btn{width:100%}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-grid .full{grid-column:1/-1}label{display:grid;gap:7px;font-size:13px;font-weight:700;color:#344054;margin-bottom:14px}input,select,textarea{width:100%;border:1px solid #cfd6e4;border-radius:9px;padding:10px 11px;background:#fff;color:#172033;outline:none}input:focus,select:focus,textarea:focus{border-color:#7aa7ff;box-shadow:0 0 0 3px rgba(37,99,235,.09)}textarea{resize:vertical}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:13px}th{text-align:left;color:#667085;font-weight:700;border-bottom:1px solid var(--line);padding:10px}td{border-bottom:1px solid #eef1f5;padding:12px 10px;vertical-align:top}tbody tr:hover{background:#fafbfc}.empty{text-align:center;color:var(--muted);padding:35px}.badge{display:inline-block;border-radius:999px;padding:5px 9px;background:#eef2f6;color:#475467;font-size:11px;font-weight:800}.badge.active,.badge.sent{background:#e9f8ef;color:#157f3c}.badge.unsubscribed,.badge.error{background:#fff0ee;color:#b42318}.badge.queued,.badge.sending{background:#eef4ff;color:#1d4ed8}.badge.draft{background:#f3f4f6}.badge.paused{background:#fff6db;color:#8a5a00}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.actions form{margin:0}.link-btn{border:0;background:transparent;padding:0;color:var(--primary);cursor:pointer}.link-btn.danger{color:var(--danger)}.block{display:block;color:var(--muted);margin-top:4px;font-weight:400}.inline-search,.inline-form{display:flex;gap:8px;align-items:center}.inline-search input{width:220px}.inline-search select{width:150px}.tokens{display:flex;gap:8px;flex-wrap:wrap}.tokens code,code{background:#f2f4f7;border-radius:6px;padding:3px 6px}.editor-card{padding-bottom:0}.toolbar{display:flex;gap:7px;flex-wrap:wrap}.toolbar button{border:1px solid var(--line);background:#f8fafc;border-radius:7px;padding:7px 9px;cursor:pointer}.editor-split{display:grid;grid-template-columns:1fr 1fr;min-height:620px;margin:0 -22px}.editor-split textarea{border:0;border-radius:0;border-top:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;line-height:1.55;padding:18px;resize:none;background:#0b1020;color:#d8e1f0}.editor-split iframe{width:100%;height:620px;border:0;border-top:1px solid var(--line);background:#fff}.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px;font-size:13px}.alert.success{background:#e9f8ef;color:#166534}.alert.error{background:#fff0ee;color:#9b1c1c}.error-cell{max-width:340px;color:#b42318}.diagnostics{display:grid;grid-template-columns:110px 1fr;gap:10px;font-size:13px}.diagnostics dt{color:var(--muted)}.diagnostics dd{margin:0}.app-footer{padding:24px 0 10px;color:#98a2b3;text-align:center;font-size:11px}.login,.setup{display:grid;place-items:center;padding:30px;background:radial-gradient(circle at top,#eaf1ff,#f6f8fb 45%,#f6f8fb)}.login-card,.setup-card{width:min(520px,100%);background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:0 20px 60px rgba(15,23,42,.12)}.login-card h1,.setup-card h1{font-size:26px;margin:28px 0 20px}.diag{margin-top:24px;border-top:1px solid var(--line);padding-top:17px;display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--muted)}.diag strong{width:100%;color:var(--text)}
@media(max-width:1100px){.stats{grid-template-columns:repeat(3,1fr)}.grid.two,.sidebar-grid{grid-template-columns:1fr}.editor-split{grid-template-columns:1fr}.editor-split textarea,.editor-split iframe{height:450px;min-height:450px}}
@media(max-width:760px){.sidebar{position:static;width:auto;min-height:auto}.sidebar nav{grid-template-columns:repeat(2,1fr);margin-top:20px}.side-footer{display:none}.app{margin-left:0}.topbar{position:static;padding:0 18px}.content{padding:18px}.stats{grid-template-columns:repeat(2,1fr)}.hero{align-items:flex-start;gap:20px;flex-direction:column}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.section-head,.section-actions{align-items:flex-start;flex-direction:column}.inline-search,.inline-form{width:100%;flex-direction:column;align-items:stretch}.inline-search input,.inline-search select{width:100%}}