:root {
    /**/
    --color0: #FFFFFF;
    --color1: #D9D9D9;
    --color2: #9E9E9E;
    --color3: #000000;
    --color4: #3c3c3c;
    --color5: #313131;
}

* {
    box-sizing: border-box;
    font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    font-size: 16px;
}

body, html {
    background-color: var(--color1);
    margin: 0;
    padding: 0;
}

.form {
    display: flex;
    flex-flow: column;
    width: 100%;
}
.form .form-label {
    display: block;
    padding: 20px 0 10px 0;
    font-weight: 500;
    font-size: 14px;
    color: #474b50;
}
.form .form-group {
    display: flex;
    position: relative;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}
.form .form-group .form-icon-left, .form .form-group .form-icon-right {
    fill: var(--color2);
    width: 40px;
    position: absolute;
    transform: translateY(-50%);
    top: 50%;
    pointer-events: none;
}
.form .form-group .form-icon-left {
    left: 0;
}
.form .form-group .form-icon-left + .form-input {
    padding-left: 40px;
}
.form .form-group .form-icon-right {
    right: 0;
}
.form .form-group .form-icon-right + .form-input {
    padding-right: 40px;
}
.form .form-group:focus-within .form-icon-left {
    fill: var(--color2);
}
.form .form-input {
    width: 100%;
    height: 43px;
    border: 1px solid var(--color3);
    padding: 0 15px;
    color: var(--color3);
}
.form .form-input::placeholder {
    color: var(--color2);
}

.form .form-link {
    color: var(--color4);
    font-weight: 500;
}
.form .form-link:hover {
    color: var(--color5);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    appearance: none;
    cursor: pointer;
    border: 0;
    background-color: var(--color4);
    color: var(--color0);
    padding: 0 14px;
    font-size: 14px;
    font-weight: 600;
    height: 42px;
    box-shadow: 0px 0px 6px 1px rgba(45, 57, 68, 0.1);
}
.btn:hover {
    background-color: var(--color5);
}
.login, .register {
    display: flex;
    flex-flow: column;
    width: 400px;
    max-width: 95%;
    background-color: var(--color0);
    box-shadow: 0px 0px 7px 1px rgba(45, 57, 68, 0.05);
    margin: 100px auto;
    padding: 35px;
}
.login h1, .register h1 {
    text-align: center;
    font-size: 24px;
    font-weight: 500;
    padding: 15px 0;
    margin: 0;
}