:root {
    --bg: #0c0c0c;
    --text: #f5f5f5;
    --left-bg: #0c0c0c;
    --right-bg: #141414;
    --input-bg: #1e1e1e;
    --input-border: #333;
    --button-bg: #5444FF;
}

body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, sans-serif;
}

.left {
    background: var(--left-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px;
}

h1 {
    font-size: 52px;
    font-weight: bold;
    margin-bottom: 20px;
}

.description {
    max-width: 420px;
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.right {
    background: var(--right-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    box-shadow: -8px 0 30px rgba(0,0,0,0.4);
}

.form-wrapper {
    width: 100%;
    max-width: 550px;
    padding: 60px 40px;
    box-sizing: border-box;
}

label {
    font-weight: bold;
    margin-bottom: 8px;
    font-size: 16px;
    display: block;
}

input, textarea {
    width: 100%;
    padding: 18px;
    border: 1px solid var(--input-border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text);
    font-size: 17px;
    margin-bottom: 30px;
    box-sizing: border-box;
}

textarea {
    min-height: 200px;
    resize: none;
}

.feedback {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #222;
    color: #fff;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.4);
    font-size: 16px;
    z-index: 1000;
}

.submit-btn {
    width: 100%;
    background: var(--button-bg);
    color: white;
    padding: 18px;
    border: none;
    border-radius: 12px;
    font-size: 20px;
    cursor: pointer;
    margin-top: 10px;
}

/* -------------------------- */
/*      RESPONSIVE DESIGN     */
/* -------------------------- */

/* Tablets (≤ 1024px) */
@media (max-width: 1024px) {
    body {
        grid-template-columns: 1fr;
        height: auto;
        overflow: auto;
    }

    .left, .right {
        padding: 30px;
        box-shadow: none;
    }

    h1 {
        font-size: 44px;
    }

    .description {
        font-size: 17px;
    }

    .form-wrapper {
        padding: 40px 30px;
    }
}

/* Large phones & small tablets (≤ 768px) */
@media (max-width: 768px) {

    h1 {
        font-size: 38px;
    }

    .left, .right {
        padding: 25px;
    }

    input, textarea {
        font-size: 16px;
        padding: 16px;
    }

    .submit-btn {
        font-size: 18px;
        padding: 16px;
    }

    .form-wrapper {
        padding: 30px 20px;
    }
}

/* Phones (≤ 480px) */
@media (max-width: 480px) {

    body {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 32px;
    }

    .description {
        font-size: 16px;
        max-width: 100%;
    }

    input, textarea {
        padding: 14px;
        font-size: 15px;
    }

    .submit-btn {
        font-size: 17px;
        padding: 14px;
    }

    .form-wrapper {
        padding: 25px 15px;
    }
}