:root{--bg:#f8fafc;--dark:#0f172a;--muted:#64748b;--primary:#2563eb;--primary-dark:#1e40af;--success:#10b981;--border:#e2e8f0;--card:#fff;--shadow:0 24px 60px rgba(15,23,42,.12);--radius:24px}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--dark);background:radial-gradient(circle at top left,rgba(37,99,235,.18),transparent 35%),radial-gradient(circle at bottom right,rgba(16,185,129,.18),transparent 30%),var(--bg)}.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px}.glass-card{background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow);backdrop-filter:blur(18px);border-radius:var(--radius)}.auth-card{width:min(440px,100%);padding:34px}.brand{display:flex;align-items:center;gap:14px;margin-bottom:24px}.brand-mark{width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--success));color:#fff;display:grid;place-items:center;font-weight:800}.brand h1{margin:0;font-size:22px}.brand p,.brand span{margin:2px 0 0;color:var(--muted);font-size:13px}h2{margin:0 0 8px}.muted{color:var(--muted)}.form{display:grid;gap:10px;margin-top:22px}label{font-weight:700;font-size:13px}input{border:1px solid var(--border);border-radius:14px;padding:14px 15px;outline:none;font-size:15px;transition:.2s ease}input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.12)}.btn-primary,.btn-light{border:0;border-radius:14px;padding:14px 18px;text-decoration:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-weight:800}.btn-primary{margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}.btn-light{background:#fff;color:var(--dark);border:1px solid var(--border)}.alert{padding:12px 14px;border-radius:14px;margin:14px 0;font-size:14px}.alert-danger{background:#fee2e2;color:#991b1b}.help-text{font-size:12px;color:var(--muted);margin-top:18px}.app-shell{display:flex;min-height:100vh}.sidebar{width:280px;background:rgba(15,23,42,.96);color:#fff;padding:24px}.sidebar-brand .brand-mark{width:42px;height:42px}.nav{display:grid;gap:8px;margin-top:26px}.nav a{color:rgba(255,255,255,.74);text-decoration:none;padding:12px 14px;border-radius:14px}.nav a.active,.nav a:hover{background:rgba(255,255,255,.12);color:#fff}.main-content{flex:1;padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:28px}.topbar h1{margin:0}.topbar p{margin:4px 0 0;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.stat-card,.panel{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:22px;box-shadow:0 12px 30px rgba(15,23,42,.06)}.stat-card span{color:var(--muted);font-size:13px}.stat-card strong{display:block;font-size:34px;margin:8px 0}.stat-card small{color:var(--success)}.panel{margin-top:24px}.panel h2{margin-top:0}@media(max-width:900px){.app-shell{display:block}.sidebar{width:auto}.stats-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}}