/* =========================================================
   TAVISA LIFE SCIENCES — SHARED HEADER
   Same header on:
   index.html
   about.html
   products.html
   contact.html
   ========================================================= */

:root {
    --header-navy: #071a35;
    --header-blue: #1769d2;
    --header-text: #53647c;
    --header-border: #e5ebf2;
}

/* ---------- HEADER BASE ---------- */

.site-header {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;

    width: 100% !important;
    height: 76px !important;
    min-height: 76px !important;
    max-height: 76px !important;

    z-index: 99999 !important;

    background: rgba(255, 255, 255, 0.96) !important;
    border-bottom: 1px solid transparent !important;

    box-shadow: none !important;

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    transition:
        background-color .25s ease,
        border-color .25s ease,
        box-shadow .25s ease !important;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    border-bottom: 1px solid var(--header-border) !important;
    box-shadow: 0 8px 28px rgba(7, 26, 53, .08) !important;
}


/* ---------- HEADER CONTAINER ---------- */

.site-header .nav-container {
    width: min(1180px, calc(100% - 40px)) !important;

    height: 76px !important;
    min-height: 76px !important;
    max-height: 76px !important;

    margin: 0 auto !important;
    padding: 0 !important;

    display: flex !important;
    align-items: center !important;

    gap: 32px !important;
}


/* ---------- LOGO / BRAND ---------- */

.site-header .brand {
    height: 76px !important;

    display: inline-flex !important;
    align-items: center !important;

    flex: 0 0 auto !important;
    gap: 12px !important;

    margin: 0 !important;
    padding: 0 !important;

    text-decoration: none !important;
}

.site-header .brand picture {
    width: 45px !important;
    height: 45px !important;

    display: block !important;
    flex: 0 0 45px !important;
}

.site-header .brand-logo {
    display: block !important;

    width: 45px !important;
    height: 45px !important;

    min-width: 45px !important;
    min-height: 45px !important;
    max-width: 45px !important;
    max-height: 45px !important;

    object-fit: contain !important;
}


/* ---------- BRAND TEXT ---------- */

.site-header .brand-text {
    height: auto !important;

    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;

    margin: 0 !important;
    padding: 0 !important;
}

.site-header .brand-text strong {
    display: block !important;

    margin: 0 !important;
    padding: 0 !important;

    color: var(--header-navy) !important;

    font-family: Manrope, Arial, sans-serif !important;
    font-size: 13.5px !important;
    line-height: 1.15 !important;
    font-weight: 800 !important;

    letter-spacing: .055em !important;
    white-space: nowrap !important;
}

.site-header .brand-text small {
    display: block !important;

    margin: 4px 0 0 !important;
    padding: 0 !important;

    color: #8796aa !important;

    font-family: "DM Sans", Arial, sans-serif !important;
    font-size: 7.5px !important;
    line-height: 1 !important;
    font-weight: 800 !important;

    letter-spacing: .14em !important;
    text-transform: uppercase !important;

    white-space: nowrap !important;
}


/* ---------- NAVIGATION ---------- */

.site-header .main-nav {
    height: 76px !important;

    display: flex !important;
    align-items: center !important;

    gap: 30px !important;

    margin: 0 0 0 auto !important;
    padding: 0 !important;
}

.site-header .main-nav a {
    position: relative !important;

    height: 76px !important;

    display: inline-flex !important;
    align-items: center !important;

    margin: 0 !important;
    padding: 0 !important;

    color: var(--header-text) !important;

    font-family: "DM Sans", Arial, sans-serif !important;
    font-size: 13.5px !important;
    line-height: 1 !important;
    font-weight: 700 !important;

    text-decoration: none !important;

    white-space: nowrap !important;
}

.site-header .main-nav a:hover {
    color: var(--header-navy) !important;
}

.site-header .main-nav a.active {
    color: var(--header-navy) !important;
}


/* ---------- ACTIVE UNDERLINE ---------- */

.site-header .main-nav a::after {
    content: "" !important;

    position: absolute !important;

    left: 0 !important;
    right: 100% !important;
    bottom: 15px !important;

    width: auto !important;
    height: 2px !important;

    background: var(--header-blue) !important;

    transition: right .22s ease !important;
}

.site-header .main-nav a:hover::after,
.site-header .main-nav a.active::after {
    right: 0 !important;
}


/* ---------- CTA ---------- */

.site-header .nav-cta {
    height: 44px !important;
    min-height: 44px !important;
    max-height: 44px !important;

    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;

    flex: 0 0 auto !important;

    gap: 10px !important;

    margin: 0 !important;
    padding: 0 22px !important;

    border: 0 !important;
    border-radius: 13px !important;

    background: var(--header-navy) !important;
    color: #fff !important;

    font-family: "DM Sans", Arial, sans-serif !important;
    font-size: 12px !important;
    line-height: 1 !important;
    font-weight: 800 !important;

    text-decoration: none !important;

    white-space: nowrap !important;

    box-shadow: 0 10px 25px rgba(7, 26, 53, .12) !important;

    transition:
        background .2s ease,
        transform .2s ease,
        box-shadow .2s ease !important;
}

.site-header .nav-cta:hover {
    background: var(--header-blue) !important;
    color: #fff !important;

    transform: translateY(-1px) !important;

    box-shadow: 0 14px 28px rgba(23, 105, 210, .20) !important;
}

.site-header .nav-cta span {
    display: inline-block !important;
    font-size: 17px !important;
    line-height: 1 !important;
}


/* ---------- MOBILE BUTTON ---------- */

.site-header .menu-toggle {
    display: none !important;

    width: 42px !important;
    height: 42px !important;

    min-width: 42px !important;
    min-height: 42px !important;

    margin: 0 0 0 auto !important;
    padding: 0 !important;

    border: 0 !important;
    background: transparent !important;

    cursor: pointer !important;
}

.site-header .menu-toggle span {
    display: block !important;

    width: 22px !important;
    height: 2px !important;

    margin: 5px auto !important;

    background: var(--header-navy) !important;

    transition: .25s ease !important;
}

.site-header .menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg) !important;
}

.site-header .menu-toggle.active span:nth-child(2) {
    opacity: 0 !important;
}

.site-header .menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg) !important;
}


/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 1000px) {

    .site-header .nav-container {
        width: min(100% - 32px, 1180px) !important;
        gap: 20px !important;
    }

    .site-header .main-nav {
        gap: 20px !important;
    }

    .site-header .main-nav a {
        font-size: 12.5px !important;
    }

    .site-header .nav-cta {
        padding: 0 16px !important;
        font-size: 11.5px !important;
    }
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 760px) {

    .site-header {
        height: 70px !important;
        min-height: 70px !important;
        max-height: 70px !important;
    }

    .site-header .nav-container {
        width: calc(100% - 28px) !important;

        height: 70px !important;
        min-height: 70px !important;
        max-height: 70px !important;
    }

    .site-header .brand {
        height: 70px !important;
        gap: 10px !important;
    }

    .site-header .brand picture {
        width: 40px !important;
        height: 40px !important;
        flex-basis: 40px !important;
    }

    .site-header .brand-logo {
        width: 40px !important;
        height: 40px !important;

        min-width: 40px !important;
        min-height: 40px !important;

        max-width: 40px !important;
        max-height: 40px !important;
    }

    .site-header .brand-text strong {
        font-size: 11.5px !important;
        letter-spacing: .045em !important;
    }

    .site-header .brand-text small {
        font-size: 6.5px !important;
        letter-spacing: .12em !important;
    }

    .site-header .nav-cta {
        display: none !important;
    }

    .site-header .menu-toggle {
        display: block !important;
    }

    .site-header .main-nav {
        position: absolute !important;

        top: 70px !important;
        left: 14px !important;
        right: 14px !important;

        width: auto !important;
        height: auto !important;

        display: none !important;
        flex-direction: column !important;
        align-items: stretch !important;

        gap: 0 !important;

        margin: 0 !important;
        padding: 10px !important;

        background: #fff !important;

        border: 1px solid #e1e8f0 !important;
        border-radius: 16px !important;

        box-shadow: 0 18px 40px rgba(7, 26, 53, .14) !important;
    }

    .site-header .main-nav.open {
        display: flex !important;
    }

    .site-header .main-nav a {
        width: 100% !important;
        height: 46px !important;

        display: flex !important;
        align-items: center !important;

        padding: 0 15px !important;

        font-size: 14px !important;
    }

    .site-header .main-nav a::after {
        display: none !important;
    }
}


/* =========================================================
   SMALL MOBILE
   ========================================================= */

@media (max-width: 420px) {

    .site-header .nav-container {
        width: calc(100% - 22px) !important;
    }

    .site-header .brand-text strong {
        font-size: 10.5px !important;
    }

    .site-header .brand-text small {
        font-size: 5.8px !important;
    }
}