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

body {
    font-family: Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px 35px;
    border-radius: 18px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.logo {
    width: 75px;
    height: 75px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: #176b5b;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    font-weight: bold;
}

h1 {
    color: #176b5b;
    font-size: 26px;
    margin-bottom: 8px;
}

.subtitle {
    color: #777;
    font-size: 14px;
    margin-bottom: 30px;
}

.input-group {
    text-align: left;
    margin-bottom: 18px;
}

.input-group label {
    display: block;
    margin-bottom: 7px;
    color: #333;
    font-size: 14px;
    font-weight: bold;
}

.input-group input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #ddd;
    border-radius: 9px;
    font-size: 15px;
    outline: none;
}

.input-group input:focus {
    border-color: #176b5b;
    box-shadow: 0 0 0 2px rgba(23, 107, 91, 0.1);
}

.login-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 9px;
    background: #176b5b;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 8px;
}

.login-btn:hover {
    background: #125447;
}

.footer {
    margin-top: 25px;
    color: #999;
    font-size: 12px;
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 22px;
    }

    h1 {
        font-size: 23px;
    }
}