:root{--navy:#0a2c63;--navy2:#123f82;--cyan:#20bfd8;--bg:#f4f7fb;--card:#fff;--text:#12213e;--muted:#6c7890;--border:#dce5f0;--green:#0d8a5f;--red:#b4232f;--amber:#a36100}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:100vh}.sidebar{background:linear-gradient(180deg,var(--navy),#071b3c);color:#fff;padding:28px 22px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px}.brand-badge{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:var(--cyan);color:var(--navy);font-size:23px;font-weight:900}.brand strong{display:block;letter-spacing:.08em}.brand small{display:block;opacity:.7;margin-top:2px}.sidebar nav{display:grid;gap:7px;margin-top:40px}.sidebar nav a{padding:13px 14px;border-radius:12px}.sidebar nav a:hover,.sidebar nav a.active{background:#ffffff18}.sidebar-bottom{margin-top:auto}.user-mini{margin-bottom:14px}.user-mini strong,.user-mini small{display:block}.user-mini small{opacity:.65;margin-top:3px}.main-content{padding:36px;max-width:1500px;width:100%;margin:auto}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:24px}.page-header h1{font-size:34px;margin:0 0 7px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:12px;font-weight:800;color:var(--navy2);margin:0 0 8px}.muted{color:var(--muted)}p{line-height:1.5}.status{display:inline-flex;padding:9px 14px;border-radius:999px;font-size:13px;font-weight:800}.status.online{background:#e7fff5;color:var(--green);border:1px solid #bcefdc}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;margin-bottom:20px}.stat-card,.panel{background:var(--card);border:1px solid 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7px}input,select,textarea{width:100%;padding:12px 13px;border:1px solid var(--border);border-radius:11px;background:#fff;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px #20bfd81c}.alert{padding:12px 14px;border-radius:11px;margin-bottom:16px}.alert.error{background:#fff0f1;color:var(--red);border:1px solid #ffcbd0}.alert.success{background:#e7fff5;color:var(--green);border:1px solid #bcefdc}.license-key{font-family:Consolas,monospace;font-size:25px;font-weight:900;letter-spacing:.04em;margin-top:6px;word-break:break-all}.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}.detail-grid div{padding:15px;background:#f8fbff;border:1px solid var(--border);border-radius:13px}.detail-grid span,.detail-grid strong{display:block}.detail-grid span{color:var(--muted);font-size:13px;margin-bottom:6px}.button-row{display:flex;flex-wrap:wrap;gap:10px}.guest-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at top right,#d5f8ff,transparent 35%),linear-gradient(135deg,#071b3c,#123b78)}.login-card{width:min(430px,100%);background:white;border-radius:24px;padding:35px;box-shadow:0 26px 90px #0004}.login-brand{margin-bottom:28px}.login-card h1{font-size:34px;margin:0 0 8px}.login-card form label{margin-top:16px}.login-card .btn{margin-top:22px}@media(max-width:1000px){.stats-grid{grid-template-columns:repeat(2,1fr)}.detail-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{height:auto;position:static}.sidebar nav{grid-template-columns:repeat(2,1fr);margin-top:22px}.sidebar-bottom{margin-top:22px}.main-content{padding:20px}.page-header{display:block}.page-header>.btn,.page-header>.status{margin-top:12px}.form-grid,.detail-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}}@media(max-width:460px){.stats-grid{grid-template-columns:1fr}.sidebar nav{grid-template-columns:1fr}.main-content{padding:14px}.panel{padding:17px}}