@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap');

:root {
    --blue-color: #0073e6;
    --green-color: #34a853;
    --yellow-color: #fbbc05;
    --black-color: #333;
    --red-color: #ea4335;
}

body {
    display: flex;
    flex-direction: column;
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

main {
    flex: 1;
}

nav {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px 16px;
    padding: 12px 16px;
    border-bottom: 1px solid #ccc;
}

nav a {
    text-decoration: none;
    color: #333;
}

nav a:hover {
    text-decoration: underline;
}

nav span {
    display: flex;
    justify-content: flex-start;
    font-weight: bold;
    color: var(--blue-color);
}

h1, form {
    text-align: center;
    margin: 20px 0;
}

h1 {
    font-size: clamp(4rem, 16vw, 10rem);
    margin-bottom: 20px;
    line-height: 1.1;
}

h1 span {
    gap: 1px;
}

p {
    text-align: center;
    font-size: 1.2rem;
    color: var(--black-color);
}

.blue {
    color: var(--blue-color);
}
.green {
    color: var(--green-color);
}
.yellow {
    color: var(--yellow-color);
}
.red {
    color: var(--red-color);
}

form label {
    display: block;
    margin: 12px 0;
}

.advanced-form {
    width: min(100%, 620px);
    text-align: left;
}

form input[type="text"] {
    display: block;
    width: min(300px, calc(100vw - 64px));
    box-sizing: border-box;
    margin-top: 4px;
    border: 1px solid #ccc;
    padding: 8px;
    border-radius: 15px;
}

.advanced-form input[type="text"] {
    width: 100%;
}

form input[type="submit"] {
    margin-top: 10px;
    padding: 8px 16px;
    border: none;
    background-color: var(--blue-color);
    color: white;
    border-radius: 15px;
    cursor: pointer;
}

form input[type="submit"]:hover {
    background-color: #005bb5;
}

form button {
    display: block;
    justify-content: center;
    align-items: center;
    margin:auto;
    margin-top: 1.5rem;
    padding: 8px 16px;
    border: none;
    background-color: var(--green-color);
    color: white;
    font-size: 1.125rem;
    border-radius: 15px;
    cursor: pointer;
}

form button:hover {
    background-color: #2c8e46;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 24px 16px;
}

footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 16px;
    text-align: center;
    padding: 12px 16px;
    border-top: 1px solid #ccc;
    color: #666;
}

footer p {
    font-size: 0.9rem;
    margin: 10px 0;
    padding: 0 10px;
    text-align: center;
}

footer a {
    color: var(--blue-color);
    text-decoration: none;
}

.validation-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.validation-links a {
    display: inline-block;
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    color: #333;
    font-size: 0.875rem;
    text-decoration: none;
    background: #fff;
}

.validation-links a:hover {
    background: #f2f2f2;
}

@media (max-width: 480px) {
    nav {
        justify-content: center;
    }

    main {
        padding: 20px 12px;
    }

    form {
        width: 100%;
    }

    form input[type="text"] {
        width: min(100%, 340px);
        margin-left: auto;
        margin-right: auto;
    }

    footer {
        flex-direction: column;
        gap: 4px;
    }
}