html {
    line-height: 1.6;
    font-size: 0.8vw;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    background: linear-gradient(135deg, #f4f4f4, #dfe9f3);
    margin: 0;
    display: flex;
    align-items: center;
    flex-direction: column;
    padding-top: 2em;
    min-height: 100vh;
}

:root {
    --bright-blue: #0554F2;
    --dark-blue: #03258C;
    --bright-green: #67ad22;
    --dark-green: #49730A;
    --main-yellow: #ffff10;
    --main-grey: #7D8C8B;
    --background-color: #c6dae0;
    --base-text-size: 1.1em;
    --rem: 1.3rem;
}

img {
    width: 20rem;
    height: auto;
    margin-bottom: 1em;
}

form {
    max-width: 30em;
    width: 100%;
    padding: 3em 2em;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 6px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: bold;
    color: var(--main-grey);
    font-size: 1rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.8em;
    margin-bottom: 1em;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1.3rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: var(--bright-blue);
    outline: none;
    box-shadow: 0 0 8px rgba(5, 84, 242, 0.3);
}

button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--bright-blue), var(--dark-blue), var(--bright-blue));
    background-size: 200% 200%;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: background-position 0.3s ease, transform 0.2s ease;
    background-position: 0 50%;
}

button:hover {
    background-position: 100% 50%;
    transform: scale(1.05);
}

button:active {
    transform: scale(0.95);
}

#error-message {
    color: red;
    margin-top: 10px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: bold;
}

@media (max-width: 1024px) {
    html {
        line-height: 1.4;
        font-size: 2.2vw;
    }

    img {
        width: 20rem;
    }

    form {
        max-width: 80%;
        width: 100%;
        /*padding: 3em 2em;*/
    }

    input[type="text"],
    input[type="password"] {
        width: 100%;
        padding: 0.8em;
        margin-bottom: 1em;
        border: 1px solid #ccc;
        border-radius: 8px;
        box-sizing: border-box;
        font-size: 1.3rem;
        transition: border-color 0.3s ease;
    }

    input[type="text"]:focus,
    input[type="password"]:focus {
        border-color: var(--bright-blue);
        outline: none;
        box-shadow: 0 0 8px rgba(5, 84, 242, 0.3);
    }

    button {
        width: 100%;
        padding: 12px;
        background: linear-gradient(135deg, var(--bright-blue), var(--dark-blue), var(--bright-blue));
        background-size: 200% 200%;
        color: white;
        border: none;
        border-radius: 8px;
        cursor: pointer;
        font-size: 1rem;
        font-weight: bold;
        transition: background-position 0.3s ease, transform 0.2s ease;
        background-position: 0 50%;
    }

    button:hover {
        background-position: 100% 50%;
        transform: scale(1.05);
    }

    button:active {
        transform: scale(0.95);
    }

    #error-message {
        color: red;
        margin-top: 10px;
        text-align: center;
        font-size: 0.9rem;
        font-weight: bold;
    }

}

@media (max-width: 768px) {
    html {
        line-height: 1.2;
        font-size: 3.5vw;
    }
}