:root{--bg:#f5f7fb;--panel:#fff;--text:#172033;--muted:#697386;--line:#e5e9f0;--primary:#4f46e5;--primary2:#4338ca;--danger:#c62828;--radius:16px;--shadow:0 10px 35px rgba(26,32,44,.06)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--primary);text-decoration:none}button,input,textarea{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:235px 1fr}.sidebar{position:sticky;top:0;height:100vh;background:#111827;color:#dbe2ee;padding:24px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;font-weight:750;font-size:16px;padding:0 8px 24px}.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:grid;place-items:center;color:#fff;font-weight:800}.sidebar nav{display:grid;gap:6px}.sidebar nav a,.logout{color:#aeb8c9;padding:11px 12px;border-radius:10px}.sidebar nav a:hover,.sidebar nav a.active{background:#1f2937;color:white}.logout{margin-top:auto}.main{padding:32px;min-width:0}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.topbar h1{font-size:28px;margin:2px 0}.eyebrow{font-size:11px;letter-spacing:.12em;color:#8993a5;margin:0}.btn{border:0;border-radius:10px;padding:10px 15px;font-weight:650;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary2)}.btn.secondary{background:#eef0ff;color:#3730a3}.btn.danger-fill{background:#b91c1c;color:#fff}.btn.full{width:100%}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.stats article,.panel,.preview-panel{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius)}.stats article{padding:24px}.stats span{display:block;color:var(--muted);margin-bottom:12px}.stats strong{font-size:30px}.panel{padding:22px;margin-bottom:20px}.panel h2{margin:0 0 6px;font-size:18px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.panel-head p,.muted{color:var(--muted);margin:3px 0}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%}th,td{text-align:left;padding:13px 10px;border-bottom:1px solid var(--line)}th{font-size:12px;color:#7c8799;font-weight:700}.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#eef1f5;font-size:12px}.badge.active,.badge.sent{background:#e8f7ee;color:#16713b}.badge.unsubscribed,.badge.failed{background:#fff0f0;color:#a12222}.badge.draft{background:#fff7df;color:#8a5a00}.grid.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-grid{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:12px;align-items:end}label{display:grid;gap:7px;font-weight:650;color:#344054}input,textarea{width:100%;border:1px solid #d5dae3;border-radius:9px;padding:10px 11px;background:#fff;color:#172033;outline:none}input:focus,textarea:focus{border-color:#818cf8;box-shadow:0 0 0 3px rgba(99,102,241,.12)}input[type=file]{margin:10px 0}.link{border:0;background:none;padding:0;cursor:pointer}.danger{color:var(--danger)}.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px}.alert.success{background:#eaf8ef;color:#17663a}.alert.error{background:#fff0f0;color:#9b1c1c}.empty{text-align:center;color:var(--muted);padding:30px}.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:20px}.editor-panel label{margin-bottom:14px}.editor-label{font-weight:650;color:#344054;margin:15px 0 7px}.toolbar{display:flex;gap:6px;flex-wrap:wrap;padding:8px;border:1px solid #d9dde6;border-bottom:0;border-radius:10px 10px 0 0;background:#f8fafc}.toolbar button{border:1px solid #d7dce5;background:#fff;border-radius:7px;padding:6px 9px;cursor:pointer}.editor{min-height:380px;border:1px solid #d9dde6;border-radius:0 0 10px 10px;padding:22px;outline:none;background:#fff}.editor:focus{border-color:#818cf8}.actions{display:flex;justify-content:flex-end;margin-top:14px}.preview-panel{padding:14px;height:max-content;position:sticky;top:20px}.preview-head{font-weight:700;padding:5px 4px 12px}.device{background:#eef1f6;border-radius:16px;padding:15px}.preview-content{min-height:500px;background:white;border-radius:8px;padding:28px;overflow-wrap:anywhere}.preview-content img{max-width:100%;height:auto}.send-box{display:flex;gap:18px;align-items:end;justify-content:space-between}.send-box form:first-child{display:flex;gap:8px;align-items:end;flex:1}.send-box label{flex:1}.login-body{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at top,#eef0ff,#f7f8fb 50%)}.login-card{width:min(420px,calc(100% - 30px));background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:34px}.login-card .brand-mark{margin-bottom:18px}.login-card h1{margin:0 0 6px}.login-card label{margin:15px 0}.login-card .btn{margin-top:6px}code{background:#f0f2f5;padding:2px 5px;border-radius:5px}@media(max-width:1000px){.editor-layout{grid-template-columns:1fr}.preview-panel{position:static}.grid.two,.stats{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr 1fr}}@media(max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{height:auto;position:static}.sidebar nav{grid-template-columns:repeat(3,1fr)}.logout{margin-top:12px}.main{padding:20px}.topbar{align-items:flex-start;gap:15px}.topbar .btn{display:none}.form-grid{grid-template-columns:1fr}.send-box,.send-box form:first-child{flex-direction:column;align-items:stretch}}