/* ============================================
   HEADER / NAVIGATION
   ============================================ */

.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    z-index: 100;
    border-bottom: 1px solid rgba(18, 49, 38, 0.08);
    box-shadow: 0 8px 18px rgba(18, 49, 38, 0.04);
}

.header__container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--nav-height, 86px);
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 180px;
}

.brand__mark {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
    box-shadow: 0 10px 20px rgba(45, 125, 93, 0.22);
}

.brand__text {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-ink);
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.main-nav__list {
    margin: 0;
    list-style: none;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 34px;
    padding: 0;
}

.main-nav__link {
    position: relative;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-ink-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 2px;
    transition: color 0.2s ease;
    text-decoration: none;
}

.main-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}

.main-nav__link:hover,
.main-nav__link:focus-visible,
.main-nav__link.is-current {
    color: var(--color-ink);
}

.main-nav__link:hover::after,
.main-nav__link:focus-visible::after,
.main-nav__link.is-current::after {
    transform: scaleX(1);
}

.header__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    box-shadow: 0 10px 22px rgba(45, 125, 93, 0.18);
}

.header__cta:hover {
    background: var(--color-accent-dark);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 200;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-ink);
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.2s ease, background 0.2s ease;
}

.nav-toggle.is-active span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

@media (max-width: 980px) {
    .header__container {
        gap: 8px;
    }

    .brand {
        min-width: 0;
    }

    .brand__text {
        font-size: 0.9rem;
    }

    .main-nav__list {
        gap: 18px;
    }

    .main-nav__link {
        font-size: 0.75rem;
        letter-spacing: 0.06em;
    }

    .header__cta {
        display: none;
    }
}

@media (max-width: 720px) {
    .header__container {
        justify-content: flex-start;
    }

    .brand {
        flex: 1;
    }

    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(260px, 80vw);
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: -12px 0 32px rgba(18, 49, 38, 0.14);
        transition: right 0.35s ease;
        z-index: 150;
        overflow-y: auto;
        border-left: 1px solid rgba(18, 49, 38, 0.06);
        justify-content: flex-start;
        padding-top: 90px;
    }

    .main-nav.is-open {
        right: 0;
    }

    .main-nav__list {
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        gap: 0;
        width: 100%;
        padding: 0 24px;
    }

    .main-nav__list li {
        width: 100%;
        opacity: 0;
        transform: translateX(18px);
        transition: opacity 0.3s ease, transform 0.3s ease;
        border-bottom: 1px solid rgba(18, 49, 38, 0.06);
    }

    .main-nav.is-open .main-nav__list li {
        opacity: 1;
        transform: translateX(0);
    }

    .main-nav.is-open .main-nav__list li:nth-child(1) { transition-delay: 0.08s; }
    .main-nav.is-open .main-nav__list li:nth-child(2) { transition-delay: 0.13s; }
    .main-nav.is-open .main-nav__list li:nth-child(3) { transition-delay: 0.18s; }
    .main-nav.is-open .main-nav__list li:nth-child(4) { transition-delay: 0.23s; }
    .main-nav.is-open .main-nav__list li:nth-child(5) { transition-delay: 0.28s; }
    .main-nav.is-open .main-nav__list li:nth-child(6) { transition-delay: 0.33s; }

    .main-nav__link {
        font-size: 0.92rem;
        letter-spacing: 0.06em;
        display: flex;
        align-items: center;
        width: 100%;
        padding: 18px 8px;
        color: var(--color-ink);
    }
}



    .main-nav__link:hover::before,
    .main-nav__link:active::before {
        height: 22px;
    }

    .main-nav__cta {
        margin: 28px 0 0;
        width: 100%;
        text-align: center;
    }

    /* тъмен overlay зад менюто */
    .nav-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.35);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 140;
    }

    .nav-overlay.is-visible {
        opacity: 1;
        visibility: visible;
    }

    /* заключва скрола на страницата при отворено меню */
    body.nav-open {
        overflow: hidden;
    }