:root {
    --black: #000;
    --white: #fff;
    --gray-dark: #2c2929;
    --gray-dark-section: #302d2d;
    --gray-dark-medium: #373434;
    --gray-medium: #494343;
    --gray-light: #686363;
    --light: #bcbcbc;
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    color: var(--white);
    background-color: var(--gray-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

header {
    background-color: var(--gray-dark);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.2s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: 20px 0;
}

.logo {
    position: relative;
    z-index: 1;
}

.logo img {
    width: 120px;
}

nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 50px;
}

.current {
    color: var(--white);
    font-size: 18px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 7px 15px;
    border-radius: 15px;
    border: 1px solid var(--gray-medium);
    background: var(--gray-medium);
}

nav ul li a {
    text-decoration: none;
    color: var(--white);
    font-size: 18px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 10px 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--white);
    transition: all 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
}

.release-button {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 15px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    color: var(--white);
    transition: all 0.3s ease;
    background-color: var(--black);
    border: 1px solid var(--black);
}

.release-button:hover {
    background-color: var(--white);
    color: var(--black);
    border: 1px solid transparent;
}

.hero {
    background: linear-gradient(135deg, var(--gray-dark) 0%, #322e2e 100%);
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-logo-desktop {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    max-width: 500px;
}

.hero-logo-mobile {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    max-width: 500px;
    width: 0;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 25px;
    letter-spacing: 5px;
    line-height: 1;
    margin-top: 0;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    color: var(--light);
    max-width: 500px;
    margin: 0 auto 30px;
}

.hero-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-developer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: 50px;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--white);
}

.developer-logo {
    max-width: 100%;
    width: 135px;
}

.red-button {
    display: inline-block;
    background: #df2525;
    color: #eee;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.red-button:hover {
    background: #ea2b2b;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2);
}

/* Features Section */

.features {
    padding: 150px 0;
    background-color: var(--gray-dark);
    position: relative;
}

.features-content {
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    font-size: 48px;
    margin-top: -50px;
    margin-bottom: 75px;
    font-weight: 800;
    letter-spacing: 3px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
}

.feature-card {
    min-height: 200px;
    background-color: var(--gray-dark-medium);
    border: 1px solid var(--gray-dark-medium);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-radius: 25px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.5s ease;
    position: relative;
    z-index: 1;
}

.feature-card:hover {
    transform: scale(1.025);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border-color: var(--white);
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-top: 0;
}

.feature-card p {
    color: var(--light);
    font-size: 16px;
    margin-bottom: 0;
}

/* Future Section */
.future {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 150px 0;
    background-color: var(--gray-dark-section);
    position: relative;
    overflow: hidden;
}

.future-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.future-card {
    position: relative;
    max-width: 500px;
}

.future-card:nth-child(odd) {
    padding: 30px 0 30px 30px;
}

.future-card:nth-child(even) {
    padding: 30px 30px 30px 0;
}

.future-card::before {
    content: '';
    position: absolute;
    width: 50%;
    border: solid var(--white);
}

.future-card:nth-child(odd)::before {
    left: 0;
    top: -4.5px;
    bottom: -4.5px;
    border-width: 5px 0 5px 5px;
    border-radius: 50px 0 0 50px;
}

@media only screen and (max-width: 400px) {
    .future-card:nth-child(odd)::before {
        top: -5px;
        bottom: -5px;
    }
}

.future-card:nth-child(even)::before {
    right: 0;
    top: 0;
    bottom: 0;
    border-width: 5px 5px 5px 0;
    border-radius: 0 50px 50px 0;
}

.future-card:first-child::before {
    border-top: 0;
    border-top-left-radius: 0;
}

.future-card:last-child:nth-child(odd)::before {
    border-bottom: 0;
    border-bottom-left-radius: 0;
}

.future-card:last-child:nth-child(even)::before {
    border-bottom: 0;
    border-bottom-right-radius: 0;
}

.info {
    min-width: 425px;
    display: flex;
    flex-direction: column;
    background: var(--gray-dark);
    border: 2px solid var(--gray-dark);
    color: var(--light);
    border-radius: 15px;
    padding: 15px;
    transition: all 0.3s ease;
}

.info:hover {
    border: 2px solid var(--white);
}

.title {
    position: relative;
    color: var(--white);
}

.title::before {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    background: black;
    border-radius: 999px;
    border: 3px solid white;
}

.future-card:nth-child(even) > .info > .title {
    text-align: right;
}

.future-card:nth-child(odd) > .info > .title::before {
    left: -51px;
}

.future-card:nth-child(even) > .info > .title::before {
    right: -51px;
}

.future > .container > p {
    color: var(--light);
    margin-top: 50px;
    font-size: 28px;
    max-width: 800px;
    font-weight: 600;
    letter-spacing: 1px;
}

/* Footer */

footer {
    background-color: var(--black);
    color: var(--white);
    padding: 50px 0 25px;
    position: relative;
}

footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 50px;
    margin-bottom: 75px;
}

.footer-column {
    margin-bottom: 20px;
}

.footer-column h3 {
    font-size: 24px;
    margin-bottom: 25px;
    position:relative;
    padding-bottom: 10px;
    font-weight: 600;
    margin-top: 0;
}

.footerMenu ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    max-width: 600px;
}

.footerMenu ul li a {
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 18px;
    display: inline-block;
}

.footer-current {
    color: var(--white);
    background-color: var(--gray-dark);
    border-radius: 15px;
    padding: 7px 15px;
    text-decoration: none;
    font-size: 18px;
    display: inline-block;
}

.footerMenu ul li a:hover {
    transform: translateY(-2px);
}

.developed-by {
    display: flex;
    justify-content: left;
    align-items: center;
    gap: 10px;
    position: relative;
}

.footer-developer-logo {
    position: relative;
    width: 120px;
}

/* Adaptive */

@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 10px 20px;
    }
}

@media (max-width: 875px) {
    nav ul li {
        margin-left: 25px;
    }

    .hero-logo-desktop {
        width: 400px;
        left: 10%;
    }
}

@media (max-width: 780px) {
    .header-container {
        flex-direction: column;
    }

    nav {
        width: 100%;
        margin-top: 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 5px 10px;
    }

    .release-button {
        margin: 20px auto 0;
    }

    .footer-column h3 {
        text-align: center;
    }

    .footerMenu {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footerMenu ul {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        justify-content: center;
        gap: 25px;
        max-width: 700px;
    }
}

@media (max-width: 700px) {
    .hero-logo-desktop img {
        width: 300px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }
}

@media (max-width: 647px) {
    .hero {
        padding: 120px 0 80px;
    }

    .hero-content {
        flex-direction: column;
    }

    .hero h1 {
        font-size: 64px;
    }

    .hero p {
        font-size: 24px;
    }

    .hero-logo-desktop {
        display: none;
    }

    .hero-logo-mobile {
        display: block;
        width: 400px;
        margin-bottom: 75px;
    }

    .features {
        padding: 60px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .future {
        padding: 60px 0;
    }

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

@media (max-width: 561px) {
    .container {
        padding: 5px 20px;
    }

    .hero-logo-mobile {
        width: 350px;
        margin-bottom: 50px;
    }

    .logo img {
        width: 90px;
    }

    .logo {
        margin-top: 15px;
        margin-bottom: -10px;
    }

    nav ul li a {
        font-size: 16px;
    }

    .release-button {
        padding: 7px 15px;
        margin-top: 10px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto;
    }

    .future > .container > p {
        font-size: 22px;
    }

    .info {
        max-width: 350px;
        min-width: 300px;
    }

    .future-card:nth-child(odd) > .info > .title::before {
        left: -52px;
    }

    .future-card:nth-child(even) > .info > .title::before {
        right: -52px;
    }

    .footer {
        display: flex;
        flex-direction: column;
    }

    .copyright {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-column h3 {
        text-align: center;
        font-size: 24px;
    }

    .footerMenu {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footerMenu ul {
        gap: 25px;
        max-width: 425px;
    }

    .footerMenu ul li a {
        font-size: 16px;
    }

    .footer-current {
        font-size: 16px;
    }
}

@media (max-width: 475px) {
    .hero p {
        max-width: 400px;
    }

    .copyright {
        font-size: 14px;
    }

    .footer-developer-logo {
        width: 80px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 375px;
        margin: 0 auto;
    }

    .info {
        max-width: 250px;
        min-width: 250px;
    }
}

@media (max-width: 425px) {
    .features-grid {
        grid-template-columns: 350px;
        max-width: 350px;
        margin: 0 auto;
    }
}

@media (max-width: 400px) {
    .features-grid {
        grid-template-columns: 325px;
        max-width: 325px;
        margin: 0 auto;
    }

    .feature-card h3 {
        font-size: 20px;
        margin-bottom: 15px;
        font-weight: 600;
        letter-spacing: 0;
        margin-top: 0;
    }

    .feature-card p {
        color: var(--light);
        font-size: 14px;
        margin-bottom: 0;
    }

    .hero-logo-mobile {
        width: 300px;
        margin-bottom: 35px;
    }

    .section-title {
        font-size: 28px;
        font-weight: bold;
    }

    .footer-column h3 {
        margin-top: -50px;
        font-size: 0;
    }

    .footerMenu {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footerMenu ul {
        gap: 15px;
        max-width: 375px;
    }

    .footerMenu ul li a {
        font-size: 14px;
    }

    .footer-current {
        font-size: 14px;
    }
}