@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --color-primary: #0f4c81;
    --color-secondary: #3ba9fc;
    --color-accent: #e0f7fa;
    --color-dark: #1a1a1a;
    --color-light: #f9fafb;
    --color-muted: #666666;
    --color-bg: #f5f9fc;
    --shadow-light: 0 4px 12px rgba(15,76,129,0.15);
    --shadow-dark: 0 6px 20px rgba(15,76,129,0.2);
    --border-radius: 12px;
    --transition: 0.3s ease;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-dark);
    line-height: 1.65;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius);
    object-fit: cover;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover,
a:focus {
    color: var(--color-secondary);
    outline: none;
}

.container {
    width: min(90%, 1200px);
    margin-left: auto;
    margin-right: auto;
}

header.header {
    background-color: var(--color-light);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 999;
    padding: 18px 0;
    margin-bottom: 48px;
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo__img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    box-shadow: var(--shadow-light);
}

.logo__text {
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--color-primary);
    letter-spacing: 1.1px;
    user-select: none;
}

.nav__list {
    list-style: none;
    display: flex;
    gap: 28px;
    margin: 0;
    padding: 0;
}

.nav__link {
    font-weight: 600;
    font-size: 1rem;
    padding: 6px 10px;
    border-radius: 8px;
    transition: background-color var(--transition), color var(--transition);
}

.nav__link:hover,
.nav__link:focus {
    background-color: var(--color-secondary);
    color: #fff;
    outline: none;
}

main {
    padding-bottom: 80px;
    scroll-behavior: smooth;
}

.hero {
    background: linear-gradient(135deg, #e0f7fa 0%, #3ba9fc 100%);
    color: #fff;
    padding: 80px 0 100px;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0% 100%);
    box-shadow: inset 0 8px 40px rgba(0,0,0,0.1);
}

.hero__title {
    font-size: 3.4rem;
    font-weight: 700;
    max-width: 700px;
    margin-bottom: 24px;
    text-shadow: 1.5px 1.5px 6px rgba(0,0,0,0.3);
}

.hero__subtitle {
    font-size: 1.3rem;
    max-width: 650px;
    margin-bottom: 48px;
    font-weight: 500;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.2);
}

.download-badges {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.badge img {
    width: 160px;
    height: auto;
    transition: transform 0.25s ease;
    border-radius: 14px;
    box-shadow: var(--shadow-dark);
}

.badge:hover img,
.badge:focus img {
    transform: scale(1.08);
    outline: none;
}

.section {
    padding: 70px 0 90px;
    background-color: var(--color-bg);
}

.section:nth-of-type(even) {
    background-color: #ffffff;
}

.section__title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 42px;
    text-align: center;
    letter-spacing: 0.6px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.content-text p {
    font-size: 1.125rem;
    margin-bottom: 22px;
    color: var(--color-dark);
}

.content-text p strong {
    color: var(--color-secondary);
}

.content-img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    max-height: 380px;
    width: 100%;
    object-fit: cover;
    transition: box-shadow 0.4s ease;
}

.content-img:hover {
    box-shadow: var(--shadow-dark);
}

.features__list {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0;
    list-style: none;
    margin: 0;
}

.features__list li {
    background: linear-gradient(135deg, #e0f7fa, #3ba9fc);
    color: #fff;
    border-radius: var(--border-radius);
    padding: 24px 32px;
    max-width: 320px;
    box-shadow: var(--shadow-dark);
    font-weight: 600;
    font-size: 1.1rem;
    line-height: 1.4;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: default;
    user-select: none;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    position: relative;
}

.features__list li strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1.25rem;
    text-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.features__list li:hover,
.features__list li:focus {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(59,169,252,0.6);
    outline: none;
}

.how-to-play .steps {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    display: grid;
    gap: 28px;
}

.step {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 24px 32px;
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    cursor: default;
    user-select: none;
}

.step:hover,
.step:focus-within {
    box-shadow: var(--shadow-dark);
    transform: translateY(-4px);
    outline: none;
}

.step__num {
    font-weight: 700;
    font-size: 2.4rem;
    color: var(--color-primary);
    background-color: var(--color-accent);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(59,169,252,0.3);
    user-select: none;
    flex-shrink: 0;
}

.step p {
    margin: 0;
    font-size: 1.15rem;
    color: var(--color-dark);
}

.how-to-play .content-img.centered {
    max-width: 600px;
    margin: 44px auto 0;
    box-shadow: var(--shadow-dark);
    border-radius: var(--border-radius);
}

.screenshots__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 28px;
    margin-top: 32px;
}

.screenshot__item {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    cursor: zoom-in;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.screenshot__item:hover,
.screenshot__item:focus {
    box-shadow: var(--shadow-dark);
    transform: scale(1.05);
    outline: none;
}

.section__intro {
    max-width: 600px;
    margin: 0 auto 28px;
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-muted);
    text-align: center;
}

footer.footer {
    background-color: #0f4c81;
    color: #fff;
    padding: 60px 0 48px;
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 48px;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

.footer__info {
    grid-column: span 2;
}

.footer__info .logo {
    gap: 14px;
    margin-bottom: 24px;
}

.footer__info .logo__img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.footer__info .logo__text {
    font-size: 1.9rem;
    font-weight: 700;
    color: #b3d1ff;
    user-select: none;
}

.footer__address {
    font-size: 0.95rem;
    color: #a1c5ff;
    max-width: 280px;
    margin-bottom: 14px;
    line-height: 1.5;
}

.footer__copyright {
    font-size: 0.9rem;
    color: #8cb5e0;
}

.footer__title {
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 24px;
    color: #c9ddff;
    user-select: none;
}

.footer__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer__list li a {
    color: #a1c5ff;
    font-weight: 500;
    transition: color var(--transition);
    font-size: 1rem;
}

.footer__list li a:hover,
.footer__list li a:focus {
    color: #fff;
    outline: none;
}

.footer__download {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}

.footer__download .badge img {
    width: 140px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    transition: transform 0.3s ease;
}

.footer__download .badge:hover img,
.footer__download .badge:focus img {
    transform: scale(1.06);
    outline: none;
}

/* Responsive */

@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .features__list {
        justify-content: center;
    }

    .header__container {
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
    }

    .nav__list {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer__container {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .footer__info {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    body {
        font-size: 15px;
    }

    .hero__title {
        font-size: 2.4rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .features__list {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .features__list li {
        max-width: 100%;
        padding: 20px 24px;
        font-size: 1rem;
    }

    .how-to-play .steps {
        gap: 20px;
    }

    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px 24px;
    }

    .step__num {
        width: 46px;
        height: 46px;
        font-size: 1.8rem;
        margin-bottom: 12px;
    }

    .footer__container {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer__info {
        grid-column: auto;
    }

    .footer__download {
        flex-direction: row;
        justify-content: center;
        gap: 20px;
    }

    .footer__download .badge img {
        width: 120px;
    }
}