body {
    font-family: 'Nunito', sans-serif;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
}
.login-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}
.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.logo {
    width: 80px; margin-bottom: 10px;
}
h2 { color: #1565C0; margin-bottom: 5px; }
p { color: #666; margin-bottom: 25px; font-size: 0.9rem; }

.form-group { margin-bottom: 15px; text-align: left; }
.form-group label { display: block; font-weight: bold; color: #555; margin-bottom: 5px; font-size: 0.9rem; }
.form-group input {
    width: 100%; padding: 12px;
    border: 2px solid #E3F2FD; border-radius: 10px;
    box-sizing: border-box; font-size: 1rem;
    transition: 0.3s;
}
.form-group input:focus { border-color: #2196F3; outline: none; }

.btn-login {
    background: #2196F3; color: white;
    border: none; padding: 12px; width: 100%;
    border-radius: 50px; font-size: 1.1rem; font-weight: bold;
    cursor: pointer; margin-top: 10px;
    transition: 0.3s;
}
.btn-login:hover { background: #1976D2; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3); }

.back-link { display: block; margin-top: 20px; text-decoration: none; color: #777; font-size: 0.9rem; }
.back-link:hover { color: #2196F3; }

.error-msg { background: #FFEBEE; color: #D32F2F; padding: 10px; border-radius: 8px; margin-bottom: 20px; font-weight: bold; font-size: 0.9rem; }