:root {
    --primary-color: #282828;
    --primary-blue: #3d6885;
    --light-white: #f9f9f9;
    --dark-text: #2c3e50;
    --medium-text: #667e98;
    --white: #ffffff;
    --border-light: #dbe4ee;
    --focus-glow: rgba(52, 152, 219, 0.2);
    --error-red: #ad0505;
    --success-green: #2ecc71;
    --shadow-subtle: rgba(0, 0, 0, 0.03);
    --shadow-medium: rgba(0, 0, 0, 0.06);
    --copy-feedback-bg: #4a5568;
}

html {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
body {
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--white);
}
main {
    margin: 0;
    background-color: var(--light-white);
    box-shadow: 4px 4px 10px 0 rgba(0, 0, 0, 0.1);
    border-radius: 18px;
    padding: 20px;
}
main h1 {
    text-align: center;
    color: var(--primary-color);
}
.section {
    margin: 0;
    width: 60vw;
}
.section-content {
    margin: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 10vw;
    color: var(--primary-color);
}
.section-content button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    font-size: large;
    border-radius: 6px;
    padding: 10px 30px;
    transition: all 0.3s ease;
}
.section-content button:hover {
    cursor: pointer;
    opacity: 0.8;
    transition: all 0.3s ease;
}

@media (max-width: 1110px) {
    .section {
        width: 80vw;
    }
}

@media (max-width: 730px) {
    body {
        background-color: var(--light-white);
    }
    main {
        box-shadow: none;
    }
    .section {
        width: 100%;
    }
}

@media (max-width: 630px) {
    body {
        display: block;
    }
    main {
        padding: 10px;
    }
    .tools {
        gap: 100px;
    }
    .section-content {
        display: block;
        margin-bottom: 40px;
    }
}