* {
margin: 0;
padding: 0;
box-sizing: border-box;
}

body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
padding: 20px;
}

.login-container {
background: white;
border-radius: 15px;
box-shadow: 0 15px 35px rgba(0,0,0,0.2);
padding: 40px;
width: 100%;
max-width: 450px;
animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
from {
opacity: 0;
transform: translateY(30px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

.logo {
text-align: center;
margin-bottom: 30px;
}

.logo-icon {
font-size: 48px;
color: #667eea;
margin-bottom: 10px;
}

.logo h1 {
color: #333;
font-size: 28px;
margin-bottom: 5px;
}

.logo p {
color: #666;
font-size: 14px;
}

.input-group {
margin-bottom: 20px;
position: relative;
}

.input-group label {
display: block;
margin-bottom: 8px;
color: #555;
font-weight: 500;
font-size: 14px;
}

.input-group input {
width: 100%;
padding: 14px 45px 14px 15px;
border: 2px solid #e1e5e9;
border-radius: 8px;
font-size: 16px;
transition: all 0.3s;
}

.input-group input:focus {
outline: none;
border-color: #667eea;
box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-icon {
position: absolute;
right: 15px;
top: 40px;
color: #999;
}

.btn-login {
width: 100%;
padding: 15px;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white;
border: none;
border-radius: 8px;
font-size: 16px;
font-weight: 600;
cursor: pointer;
transition: transform 0.2s, box-shadow 0.2s;
margin-top: 10px;
}

.btn-login:hover {
transform: translateY(-2px);
box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-login:active {
transform: translateY(0);
}

.error {
background: #fff5f5;
color: #c53030;
padding: 12px 15px;
border-radius: 8px;
margin-bottom: 20px;
font-size: 14px;
border-left: 4px solid #c53030;
display: flex;
align-items: center;
gap: 10px;
}

.error i {
font-size: 16px;
}

.footer {
text-align: center;
margin-top: 30px;
color: #888;
font-size: 12px;
padding-top: 20px;
border-top: 1px solid #eee;
}

.version {
font-size: 11px;
opacity: 0.7;
}

@media (max-width: 480px) {
.login-container {
padding: 30px 20px;
}

.logo h1 {
font-size: 24px;
}
}