:root{
  --blue-dark: #0d2e57;
  --blue-primary: #1f5fa8;
  --blue-light: #3f7cc2;
  --white: #ffffff;
  --text-dark: #1c1c1c;
  --border: #d9d9d9;
}

*{
  box-sizing: border-box;
}

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(circle at 20% 20%, #143d73, var(--blue-dark));
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:100vh;
}

/* CARD */
.card{
  width: 420px;
  background: var(--white);
  border-radius: 6px;
  padding: 40px 35px 30px 35px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
  text-align:left;
}

/* LOGO */
.logo{
  height: 50px;
  margin-bottom: 25px;
}

/* TITLES */
h1{
  font-size: 22px;
  margin: 0 0 5px 0;
  color: var(--text-dark);
}

.subtitle{
  font-size: 14px;
  margin-bottom: 25px;
  color: #666;
}

/* FIELDS */
.field{
  display:flex;
  flex-direction:column;
  margin-bottom: 20px;
}

.field span{
  font-size: 13px;
  margin-bottom: 6px;
  color:#444;
}

.field input{
  border:none;
  border-bottom: 2px solid var(--border);
  padding: 10px 5px;
  font-size:14px;
  outline:none;
  transition: 0.2s ease;
}

.field input:focus{
  border-bottom: 2px solid var(--blue-primary);
}

/* BUTTON */
.cta{
  width:100%;
  padding: 12px;
  background: var(--blue-primary);
  color: white;
  border:none;
  border-radius:4px;
  font-weight:600;
  cursor:pointer;
  transition: 0.2s ease;
  margin-top:10px;
}

.cta:hover{
  background: var(--blue-light);
}

/* FOOTER */
.footer{
  text-align:center;
  color:#ccc;
  font-size:12px;
  margin-top:25px;
}