/* ==========================================================================
   Layout: header, mobile menu, page top, footer, cookies panel
   Markup comes from assets/js/layout.js
   ========================================================================== */

/* ---------- Header ----------
   Fixed bar. The white-to-transparent background hides content that scrolls
   under the top edge of the bar. */

.site-header {
    position: fixed;
    top: 0;
    z-index: var(--ui-index-4);
    width: 100%;
    padding-top: var(--spacing-container-sm);
    background: linear-gradient(
        180deg,
        var(--color-white) 60%,
        var(--color-transparent) 60%
    );
}

.site-header__bar {
    display: grid;
    grid-template-columns: 1fr var(--spacing-xl) auto; /* logo · burger · login */
    place-items: center;
    gap: var(--spacing-sm);
    height: 64px;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-xl);
    background-color: var(--color-additional-blue-dark);
}

.site-header__bar--with-cart {
    grid-template-columns: 1fr var(--spacing-xl) var(--spacing-xl) auto; /* logo · cart · burger · login */
}

.site-header__logo {
    justify-self: start;
    padding-left: var(--spacing-sm);
}

.site-header__logo img,
.mobile-nav__logo img {
    display: block;
    width: 76px;
    height: 40px;
}

.site-header__nav {
    display: none;
    color: var(--color-white);
}

.site-header__nav ul {
    display: flex;
    align-items: center;
    column-gap: var(--spacing-lg);
}

.site-header__burger {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
}

.site-header__login {
    margin-right: var(--spacing-sm);
    font-size: var(--fs-sm);
}

/* Cart button — its markup is commented out in layout.js until checkout exists */
.mini-cart {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
}

.mini-cart__counter {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    font-size: var(--fs-xxs);
    font-weight: var(--fw-bold);
    color: var(--color-additional-blue-dark);
    background-color: var(--color-additional-green);
}

.nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-md);
    line-height: var(--lh-large);
    color: inherit;
    text-decoration: none;
}

@media (min-width: 576px) {
    .site-header__login {
        font-size: var(--fs-base);
    }
}

@media (min-width: 992px) {
    .site-header {
        padding-top: var(--spacing-container-md);
    }

    .site-header__bar {
        grid-template-columns: auto 1fr auto; /* logo · nav · login */
        gap: var(--spacing-lg);
        height: 120px;
        padding: 32px;
        border-radius: 80px;
    }

    .site-header__bar--with-cart {
        grid-template-columns: auto 1fr var(--spacing-xl) auto; /* logo · nav · cart · login */
    }

    .site-header__logo img {
        width: 101px;
        height: 54px;
    }

    .site-header__nav {
        display: block;
    }

    .site-header__burger {
        display: none;
    }

    .mini-cart {
        order: 3;
    }

    .site-header__login {
        order: 4;
    }
}

@media (min-width: 992px) and (hover: hover) and (pointer: fine) {
    .site-header__nav .nav-link:hover {
        text-decoration: underline;
        text-underline-offset: 5px;
    }
}

@media (min-width: 1200px) {
    .site-header__nav ul {
        column-gap: var(--spacing-xl);
    }
}

/* ---------- Mobile menu (below 992px) ----------
   Slides in from the right; `.is-open` is toggled by main.js. */

.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    z-index: var(--ui-index-5);
    display: flex;
    flex-direction: column;
    row-gap: var(--spacing-lg);
    width: 100%;
    height: 100vh;
    padding-bottom: var(--spacing-container-lg);
    overflow-y: auto;
    overscroll-behavior: contain;
    color: var(--color-black);
    background-color: var(--color-white);
    visibility: hidden;
    transition:
        transform 0.3s ease,
        visibility 0.3s;
}

.mobile-nav.is-open {
    visibility: visible;
    transform: translateX(-100%);
}

.mobile-nav__header {
    position: sticky;
    top: 0;
    z-index: var(--ui-index-2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--color-white);
    box-shadow: var(--shadow-soft);
}

.mobile-nav__close {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
}

.mobile-nav__content {
    display: flex;
    flex-direction: column;
    row-gap: var(--spacing-xl);
    padding-inline: var(--spacing-md);
}

.mobile-nav__links {
    display: flex;
    flex-direction: column;
    row-gap: var(--spacing-lg);
}

.mobile-nav__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.mobile-nav__contacts {
    display: flex;
    flex-direction: column;
    row-gap: var(--spacing-md);
}

@media (min-width: 992px) {
    .mobile-nav {
        display: none;
    }
}

/* ---------- Page top ----------
   Keeps page content clear of the fixed header.
   The home page puts its hero into the same box (see home.css). */

.page-top {
    display: block;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    padding-top: 64px;
    border-radius: var(--border-radius-lg);
}

/* In-page anchors (#courses, #reviews…) stop below the fixed header */
.main [id] {
    scroll-margin-top: 90px;
}

@media (min-width: 992px) {
    .page-top {
        padding-top: 120px;
        border-radius: 60px;
    }

    .main [id] {
        scroll-margin-top: 164px;
    }
}

/* ---------- Footer ---------- */

.site-footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    color: var(--color-white);
    background-color: var(--color-black);
}

/* Course pages: room for the fixed checkout panel shown below 992px */
.site-footer--with-mobile-panel {
    padding: var(--spacing-md) 0 140px;
}

.site-footer__info {
    margin-bottom: var(--spacing-xl);
}

.site-footer__logo {
    display: block;
    width: fit-content;
    margin-bottom: var(--spacing-xl);
}

.site-footer__logo img {
    display: block;
    width: 120px;
    height: 64px;
}

.site-footer__contacts {
    margin-bottom: var(--spacing-md);
}

/* Link columns stack one under another */
.site-footer__column {
    margin-bottom: var(--spacing-lg);
}

.site-footer__column:last-child {
    margin-bottom: 0;
}

.site-footer__nav-title {
    margin-bottom: var(--spacing-md);
    font-weight: var(--fw-semi-bold);
    line-height: var(--lh-large);
}

.site-footer__nav li {
    margin-bottom: var(--spacing-md);
}

.site-footer__nav a {
    font-size: var(--fs-base);
    line-height: var(--lh-large);
    color: var(--color-white);
    text-decoration: none;
}

@media (hover: hover) and (pointer: fine) {
    .site-footer__nav a:hover {
        text-decoration: underline;
    }
}

.site-footer__bottom {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-white);
}

.site-footer__copy {
    font-size: var(--fs-xxs);
}

.payments {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    margin-right: auto;
}

.payments img {
    display: block;
}

@media (min-width: 768px) {
    .site-footer {
        padding: var(--spacing-xl) 0 var(--spacing-md);
    }

    .site-footer--with-mobile-panel {
        padding: var(--spacing-xl) 0 132px;
    }

    .site-footer__top {
        display: flex;
        justify-content: space-between;
        gap: var(--spacing-lg);
    }

    .site-footer__info {
        margin-bottom: 0;
    }

    .site-footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding-top: var(--spacing-md);
    }

    .site-footer__copy {
        font-size: var(--fs-base);
        line-height: var(--lh-large);
    }

    .payments {
        gap: var(--spacing-xl);
        margin-right: 0;
    }
}

@media (min-width: 992px) {
    .site-footer--with-mobile-panel {
        padding: var(--spacing-xl) 0 var(--spacing-md);
    }
}

/* ---------- Cookies panel ----------
   Rendered hidden; main.js shows it until the visitor picks an option. */

.cookies {
    position: fixed;
    bottom: 16px;
    z-index: var(--ui-index-4);
    width: 100%;
}

.cookies__inner {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-white);
    box-shadow: var(--shadow-floating);
}

.cookies__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 670px;
    font-size: var(--fs-base);
    line-height: var(--lh-base);
}

.cookies__title {
    font-weight: var(--fw-medium);
}

.cookies__turbik {
    position: absolute;
    top: -144px;
    right: 0;
    width: 137px;
    height: 144px;
    background: url("../img/turbik.webp") no-repeat bottom center / contain;
}

.cookies__buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
}

.cookies__button {
    white-space: nowrap;
}

@media (min-width: 992px) {
    .cookies {
        bottom: 32px;
    }

    .cookies__inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: var(--spacing-xl);
    }

    .cookies__buttons {
        width: auto;
    }

    .cookies__button {
        max-width: 230px;
    }
}

@media (min-width: 1200px) {
    .cookies__inner {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .cookies__turbik {
        position: static;
        flex-shrink: 0;
        align-self: flex-end;
        margin-top: -60px;
        margin-bottom: calc(-1 * var(--spacing-md));
    }

    .cookies__buttons {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
}