body {
    font-family: 'Poppins', sans-serif;
    color: #8f95a5;
    font-size: 20px;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
p {
    margin: 0;
}

a {
    text-decoration: none;
}

.section-title {
    font-weight: 600;
    font-size: 48px;
    color: #000;
}

button {
    cursor: pointer;
    font-family: inherit;
}

/* header */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px;

}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.logo {
    font-size: 36px;
    line-height: 1.5;
    color: #000;
}

.logo-part {
    color: #939393;
}

.nav-list {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-left: 236px;
    margin-right: 121px;
    margin-top: 12px;
    margin-bottom: 12px;
    padding: 0;
}

.nav-link {
    font-weight: 500;
    color: #263238;
    text-decoration: none;
}

.current {
    color: blue;
}

.nav-link:hover,
.nav-link:focus {
    color: tomato;
}

.header-btn {
    font-family: inherit;
    font-size: 20px;
    letter-spacing: 0.03em;
    color: #000;
    background-color: transparent;
    cursor: pointer;
    margin-left: auto;
}

.header-btn:hover {
    color: tomato;
}

/* hero */

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    padding: 60px 120px;
    background-color: #f9f9f9;
}

.hero-title,
.hero-text,
.hero-btn {
    grid-column: 1 / 2;
}

.hero-image {
    grid-column: 2 / 3;
    grid-row: 1 / 4;
    max-width: 600px;
    width: 100%;
    height: auto;
    align-self: start;
    justify-self: end;
}

.hero-title {
    font-weight: 700;
    font-size: 64px;
    line-height: 1.25;
    color: #000;
    margin-bottom: 20px;
}

.hero-text {
    font-size: 20px;
    color: #555;
    margin-bottom: 40px;
}

.hero-btn {
    font-weight: 600;
    font-size: 24px;
    letter-spacing: 0.03em;
    color: #fff;
    background-color: #263238;
    padding: 16px 32px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.hero-btn:hover,
.hero-btn:focus {
    background-color: tomato;
    color: #e1e3ea;
}

/* skills */

.skills-list {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
    padding: 0;
    margin: 0;
    list-style: none;
    padding: 60px;
    padding-top: 0;
    grid-template-rows: auto auto;
}

.skills-item {
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
    width: 100%;
    box-sizing: border-box;
    text-align: left;
    margin-bottom: 0;
}

.skills-item:nth-child(1) {
    grid-column: 1 / 2;
    grid-row: 1;
}

.skills-item:nth-child(2) {
    grid-column: 2 / 3;
    grid-row: 1;
}

.skills-item:nth-child(3) {
    grid-column: 3 / 4;
    grid-row: 1;
}

.skills-item:nth-child(4) {
    grid-column: 2 / 4;
    grid-row: 2;
    align-self: start;
    margin-top: -230px;
}

.skills-item:nth-child(4) .skills-link {
    width: auto;
    max-width: 150px;
    padding: 10px 20px;
    text-align: center;
    display: inline-block;
    box-sizing: border-box;
}

.skills-title {
    text-align: center;
}

.skills-subtitle {
    font-weight: 700;
    font-size: 24px;
    color: #263238;
    margin-bottom: 15px;
}

.skills-text {
    font-size: 16px;
    color: #555;
    line-height: 1.5;
    margin-bottom: 20px;
}

.skills-link {
    display: inline-block;
    background-color: #263238;
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 6px;
    margin-top: 20px;
    box-sizing: border-box;
    max-width: 100%;
}

.skills-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.skills-text-wrapper {
    flex: 1;
    max-width: 50%;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.skills-image {
    flex-shrink: 0;
    width: 408px;
    height: auto;
    object-fit: cover;
}

/* about */
.about {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    padding: 60px 120px;
    background-color: #f9f9f9;
}

.about-text-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 500px;
}

.about-text {
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 40px;
}

.about-list li {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-num {
    font-weight: 600;
    font-size: 48px;
    color: #263238;
    margin: 0;
}

.about-desk {
    font-size: 16px;
    color: #555;
}

.about img {
    max-width: 500px;
    height: auto;
    align-self: flex-start;
}

/* pricing */

.pricing-title {
    text-align: center;
}

.pricing-list {
    display: flex;
    gap: 30px;
    list-style: none;
    padding: 0;
    margin: 0;
    align-items: stretch;
    margin-left: 60px;
    margin-right: auto;
    width: max-content;
}

.pricing-item {
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
    width: 350px;
    display: flex;
    flex-direction: column;
}

.pricing-subtitle {
    font-weight: 600;
    font-size: 24px;
    margin-top: 10px;
    color: #263238;
}

.pricing-text {
    font-size: 16px;
    margin: 10px 0 20px;
    flex-grow: 1;
}

.pricing-footer {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: auto;
}

.pricing-num {
    font-size: 24px;
    color: #263238;
}

.pricing-desk {
    font-size: 18px;
    color: #546269;
    margin: 0;
}

/* contact us */

.contact {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
    padding: 60px 120px;
    background-color: #f9f9f9;
}

.contact img {
    max-width: 425px;
    height: auto;
    flex-shrink: 0;
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 600px;
    align-self: flex-start;
}

.contact-title {
    text-align: left;
}

.contact-text {
    font-size: 16px;
    line-height: 1.6;
    color: #333;
}

.contact-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.contact-input {
    font-size: 16px;
    line-height: 1.875;
    color: #8f95a5;
    padding: 10px 15px;
    flex: 1;
    min-width: 200px;
}

.contact-btn {
    background-color: #263238;
    font-weight: 500;
    font-size: 20px;
    letter-spacing: 0.03em;
    color: #fff;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

/* footer */

.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 60px;
}

.footer-list {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-left: 236px;
    margin-top: 12px;
    margin-bottom: 12px;
    padding: 0;
}

.footer-link {
    font-size: 24px;
    letter-spacing: 0.02em;
    color: #8f95a5;
}

/* MOBILE STYLES */

@media (max-width: 1024px) {
    body {
        font-size: 16px;
    }

    .header {
        flex-direction: column;
        padding: 20px;
    }

    .hero {
        grid-template-columns: 1fr;
    }

    .pricing-list {
        flex-direction: column;
    }

    .footer {
        flex-direction: column;
    }
}

@media (max-width: 767px) {
    body {
        font-size: 16px;
        padding: 0;
        margin: 0;
    }

    .header {
        flex-direction: column;
        padding: 30px 20px;
        align-items: flex-start;
    }

    .nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        width: 100%;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        margin: 20px 0 0;
        padding: 0;
    }

    .header-btn {
        margin-left: 0;
        padding: 10px 20px;
    }

    .hero {
        grid-template-columns: 1fr;
        padding: 40px 20px;
        text-align: center;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-text {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .hero-image {
        order: -1;
        width: 100%;
        max-width: 100%;
        justify-self: center;
        grid-column: 1 / 2;
    }

    .skills-list {
        display: flex;
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    .skills-item {
        all: unset;
        display: block;
        background-color: #f5f5f5;
        padding: 20px;
        border-radius: 10px;
        width: 100%;
        box-sizing: border-box;
        text-align: center;
    }

    .skills-item:nth-child(4) {
        margin-top: 0;
    }

    .about {
        flex-direction: column;
        padding: 40px 20px;
        align-items: center;
    }

    .about img {
        width: 100%;
        max-width: 100%;
    }

    .about-text-container {
        max-width: 100%;
    }

    .about-list {
        flex-direction: column;
        gap: 20px;
    }

    .pricing-list {
        flex-direction: column;
        align-items: center;
        margin: 20px auto;
    }

    .contact {
        flex-direction: column;
        padding: 40px 20px;
        align-items: center;
    }

    .contact img {
        max-width: 100%;
        margin-bottom: 20px;
    }

    .contact-content {
        max-width: 100%;
        align-items: center;
        text-align: center;
    }

    .footer {
        flex-direction: column;
        padding: 30px 20px;
        text-align: center;
        gap: 20px;
    }

    .footer-list {
        flex-direction: column;
        align-items: center;
        margin-left: 0;
    }

    .hero,
    .about,
    .contact {
        flex-direction: column;
        padding: 30px 20px;
        text-align: center;
    }

    .hero-image,
    .about img,
    .contact img,
    .skills-image {
        width: 100%;
        max-width: 100%;
        height: auto;
        margin: 0 auto;
    }

    .hero {
        display: flex;
        flex-direction: column-reverse;
        gap: 30px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-btn {
        font-size: 18px;
        padding: 12px 24px;
    }

    .skills-content {
        flex-direction: column;
        align-items: center;
    }

    .skills-text-wrapper {
        max-width: 100%;
        text-align: center;
    }

    .about-text-container,
    .contact-content {
        max-width: 100%;
        text-align: center;
        align-items: center;
    }

    .contact-form {
        flex-direction: column;
        align-items: stretch;
    }

    .contact-input,
    .contact-btn {
        width: 100%;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
    }

    .skills-image,
    .about img,
    .contact img {
        max-width: 100%;
        height: auto;
    }

    .about,
    .contact,
    .hero {
        flex-direction: column;
        padding: 30px 20px;
    }

    .pricing-list {
        flex-direction: column;
        align-items: center;
        margin-left: 0;
    }
}