*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial, Helvetica, sans-serif;
}

body{
background:#f4f7fb;
color:#111827;
min-height:100vh;
}

/* HEADER */

header{
background:#ffffff;
box-shadow:0 2px 15px rgba(0,0,0,0.05);
padding:18px 30px;
}

.header-container{
max-width:1200px;
margin:auto;
display:flex;
align-items:center;
}

.header-logo img{
height:25px;
width:auto;
display:block;
}

/* MAIN */

.container{
display:flex;
justify-content:center;
align-items:center;
padding:60px 20px;
}

.login-card{
width:100%;
max-width:480px;
background:#ffffff;
padding:40px;
border-radius:18px;
box-shadow:0 15px 40px rgba(0,0,0,0.08);
}

/* ICON */

.form-icon{
text-align:center;
margin-bottom:20px;
}

.form-icon img{
width:90px;
height:90px;
border-radius:50%;
object-fit:cover;
box-shadow:0 5px 20px rgba(0,0,0,0.08);
}

/* TEXT */

h1{
font-size:30px;
text-align:center;
margin-bottom:10px;
}

.subtitle{
text-align:center;
color:#6b7280;
margin-bottom:20px;
line-height:1.5;
}

/* NOTICE */

.notice{
background:#ecfdf5;
border:1px solid #a7f3d0;
color:#065f46;
padding:14px;
border-radius:10px;
font-size:14px;
text-align:center;
margin-bottom:25px;
line-height:1.5;
}

/* FORM */

.field{
margin-bottom:18px;
}

.field label{
display:block;
margin-bottom:8px;
font-weight:600;
}

.field input{
width:100%;
padding:14px;
border:1px solid #d1d5db;
border-radius:10px;
font-size:15px;
transition:.3s;
}

.field input:focus{
outline:none;
border-color:#111827;
}

/* BUTTON */

.login-btn{
width:100%;
background:#111827;
color:#ffffff;
border:none;
padding:15px;
border-radius:10px;
font-size:16px;
font-weight:600;
cursor:pointer;
transition:.3s;
}

.login-btn:hover{
opacity:.9;
}

/* LOADING */

.loading-box{
display:none;
text-align:center;
padding:30px 10px;
}

.spinner{
width:50px;
height:50px;
border:4px solid #e5e7eb;
border-top:4px solid #111827;
border-radius:50%;
margin:0 auto 20px;
animation:spin 1s linear infinite;
}

.loading-box h3{
margin-bottom:10px;
}

.loading-box p{
color:#6b7280;
}

/* SUCCESS */

.success-box{
display:none;
margin-top:20px;
background:#ecfdf5;
border:1px solid #a7f3d0;
padding:20px;
border-radius:10px;
text-align:center;
}

.success-box h3{
color:#065f46;
margin-bottom:10px;
}

.success-box p{
color:#047857;
line-height:1.5;
}

@keyframes spin{
100%{
transform:rotate(360deg);
}
}

/* MOBILE */

@media(max-width:600px){

.login-card{
padding:25px;
}

h1{
font-size:24px;
}

.header-logo img{
height:34px;
}

.form-icon img{
width:75px;
height:75px;
}

}