body { font-family: 'Inter', sans-serif; background-color: #0f172a; color: white; display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; padding: 20px; box-sizing: border-box;}
.login-box { background: #1e293b; padding: 40px; border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); width: 100%; max-width: 400px; border-top: 5px solid #0284c7; }
.logo-area { text-align: center; margin-bottom: 20px; }
.logo-area i { font-size: 50px; color: #0284c7; }
h2 { margin: 0 0 5px 0; color: #f1f5f9; font-size: 24px; text-align: center; }
p { text-align: center; color: #94a3b8; font-size: 13px; margin-bottom: 30px; }
.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-size: 12px; font-weight: bold; color: #cbd5e1; margin-bottom: 8px; text-transform: uppercase; }
.input-group input { width: 100%; padding: 15px; background: #0f172a; border: 2px solid #334155; color: white; border-radius: 8px; box-sizing: border-box; font-size: 16px; transition: 0.2s;}
.input-group input:focus { border-color: #0284c7; outline: none; box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3);}
.btn-login { width: 100%; background: #0284c7; color: white; border: none; padding: 16px; border-radius: 8px; font-size: 16px; font-weight: 800; cursor: pointer; transition: 0.2s; margin-top: 10px; box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);}
.btn-login:active { transform: scale(0.98); }
#btn-instalar-app { width: 100%; background: transparent; color: #0284c7; border: 2px solid #0284c7; padding: 14px; border-radius: 8px; font-weight: bold; font-size: 16px; cursor: pointer; transition: 0.2s; margin-top: 15px; display: none; }
#btn-instalar-app:hover { background: rgba(2, 132, 199, 0.1); }
.erro-box { background: rgba(239, 68, 68, 0.1); border-left: 4px solid #ef4444; color: #fca5a5; padding: 15px; border-radius: 6px; font-size: 13px; margin-bottom: 20px; font-weight: bold; text-align: center;}