* {
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
}

.login-container {
    background:#fff;
    width:380px;
    padding:35px;
    border-radius:12px;
    box-shadow:0 10px 30px rgba(0,0,0,0.3);
}

h2 {
    text-align:center;
    margin-bottom:25px;
    color:#111827;
}

.input-group {
    margin-bottom:15px;
}

input {
    width:100%;
    padding:12px;
    border:1px solid #ddd;
    border-radius:8px;
    outline:none;
}

input:focus {
    border-color:#3b82f6;
}

button {
    width:100%;
    padding:12px;
    background:#2563eb;
    color:#fff;
    border:none;
    border-radius:8px;
    font-weight:bold;
    cursor:pointer;
}

button:hover {
    background:#1d4ed8;
}

.error {
    background:#fee2e2;
    color:#b91c1c;
    padding:10px;
    border-radius:6px;
    margin-bottom:15px;
    font-size:14px;
}

.toggle-password {
    position:relative;
}

.toggle-password span {
    position:absolute;
    right:10px;
    top:12px;
    cursor:pointer;
    font-size:13px;
}