:root{--bg-start:#0f172a;--bg-end:#1e3a5f;--card-bg:rgba(255, 255, 255, 0.92);--primary:#3b82f6;--primary-hover:#2563eb}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:linear-gradient(135deg,var(--bg-start) 0,var(--bg-end) 50%,#312e81 100%);min-height:100vh;overflow-x:hidden}.bg-cloud{position:fixed;color:rgba(255,255,255,.06);pointer-events:none;z-index:0}.bg-cloud-1{width:320px;top:8%;left:-40px;animation:float 18s ease-in-out infinite}.bg-cloud-2{width:240px;bottom:12%;right:-20px;animation:float 22s ease-in-out infinite reverse}@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-20px) translateX(10px)}}.login-wrapper{position:relative;z-index:1}.login-card{width:100%;max-width:420px;background:var(--card-bg);backdrop-filter:blur(12px);border-radius:1.25rem;animation:fadeUp .5s ease-out}@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.brand-icon{width:72px;height:72px;display:grid;place-items:center;background:linear-gradient(135deg,#eff6ff,#e0e7ff);border-radius:1rem;box-shadow:0 4px 14px rgba(59,130,246,.2)}.form-control:focus,.form-control:focus+.btn,.input-group:focus-within .input-group-text{border-color:var(--primary);box-shadow:0 0 0 .2rem rgba(59,130,246,.2)}.btn-primary{background:linear-gradient(135deg,var(--primary),#6366f1);border:none;font-weight:600;transition:transform .15s ease,box-shadow .15s ease}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),#4f46e5);transform:translateY(-1px);box-shadow:0 6px 20px rgba(59,130,246,.35)}.btn-primary:active{transform:translateY(0)}.input-group-text{background:#f8fafc;color:#64748b}@media (prefers-color-scheme:dark){:root{--card-bg:rgba(30, 41, 59, 0.88)}.login-card{color:#f1f5f9}.login-card .text-secondary{color:#94a3b8!important}.form-control,.input-group-text{background:#1e293b;border-color:#334155;color:#f1f5f9}.form-control::placeholder{color:#64748b}.brand-icon{background:linear-gradient(135deg,#1e3a5f,#312e81)}}