/* components/sticky-header/header.css */

header,
.site-header {
    background-color: transparent;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1100;
    transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease, backdrop-filter 0.4s ease;
    padding: 25px 0;
}

header.scrolled,
.site-header.scrolled {
    padding: 15px 0;
}

header .container,
.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

/* --- HEADER VARIANTY --- */
.site-header--dark {
    background: rgba(5, 8, 15, 0.18);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.site-header--light {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 14px rgba(0, 0, 0, 0.08);
}

/* index: dark hero -> po scroll svetlý sticky */
.site-header--dark.scrolled,
.site-header--dark.is-scrolled {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 14px rgba(0, 0, 0, 0.08);
}

/* --- LOGO --- */
header .logo,
.site-header .logo {
    display: inline-flex;
    align-items: center;
    position: relative;
    text-decoration: none;
    flex-shrink: 0;
    width: 220px;
    height: 52px;
    z-index: 1001;
}

header .logo img,
.site-header .logo img {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    height: 52px;
    width: auto;
    max-width: 220px;
    max-height: 52px;
    object-fit: contain;
    transition: opacity 0.4s ease, max-height 0.4s ease;
}

header.scrolled .logo img,
.site-header.scrolled .logo img,
.site-header.is-scrolled .logo img {
    max-height: 40px;
}

/* --- LOGO --- */

.logo-light,
.logo-dark {
    opacity: 0;
    pointer-events: none;
}

/* DARK HEADER (hero na indexe) = biele logo */
.site-header--dark .logo-light {
    opacity: 1;
}

.site-header--dark .logo-dark {
    opacity: 0;
}

/* LIGHT HEADER (gdpr, podstránky) = tmavé logo */
.site-header--light .logo-light {
    opacity: 0;
}

.site-header--light .logo-dark {
    opacity: 1;
}

/* INDEX po scrollnutí -> tmavé logo */
.site-header--dark.scrolled .logo-light,
.site-header--dark.is-scrolled .logo-light {
    opacity: 0;
}

.site-header--dark.scrolled .logo-dark,
.site-header--dark.is-scrolled .logo-dark {
    opacity: 1;
}

/* --- NAVIGÁCIA --- */
.main-nav {
    margin-left: auto;
    margin-right: 20px;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.main-nav ul li a {
    position: relative;
    padding: 5px 0;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 600;
}

/* dark header nav */
.site-header--dark .main-nav ul li a {
    color: var(--text-light);
}

.site-header--dark .main-nav ul li a:hover {
    color: var(--accent-color);
}

/* light header nav */
.site-header--light .main-nav ul li a {
    color: var(--text-dark);
}

.site-header--light .main-nav ul li a:hover {
    color: var(--primary-color);
}

/* dark header po scrollnutí -> tmavé texty */
.site-header--dark.scrolled .main-nav ul li a,
.site-header--dark.is-scrolled .main-nav ul li a {
    color: var(--text-dark);
}

.site-header--dark.scrolled .main-nav ul li a:hover,
.site-header--dark.is-scrolled .main-nav ul li a:hover {
    color: var(--primary-color);
}

/* --- LANGUAGE SWITCHER --- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 20px;
}

.lang-switcher a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 10px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: rgba(17, 17, 17, 0.72);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.25s ease;
}

.lang-switcher a:hover {
    color: #000;
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.14);
    transform: translateY(-1px);
}

.lang-switcher a.is-active {
    color: var(--dark-bg);
    background: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 18px rgba(0, 247, 255, 0.35);
}

/* --- HAMBURGER --- */
.hamburger {
    display: none;
}

/* Media query pre mobilné menu */
@media (max-width: 992px) {
    header .container,
    .site-header .container {
        justify-content: space-between;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background-color: rgba(10, 25, 47, 0.95);
        backdrop-filter: blur(10px);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        z-index: 1000;
        margin-right: 0;
    }

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

    .main-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 25px;
    }

    .main-nav ul li a {
        color: var(--text-light);
        font-size: 1.2rem;
    }

    .site-header--dark.scrolled .main-nav ul li a,
    .site-header--dark.is-scrolled .main-nav ul li a,
    .site-header--light .main-nav ul li a {
        color: var(--text-light);
    }

    .header-actions {
        gap: 12px;
    }

    .lang-switcher {
        margin-left: 0;
        gap: 6px;
    }

    .lang-switcher a {
        min-width: 30px;
        height: 30px;
        padding: 0 8px;
        font-size: 0.75rem;
    }

    .hamburger {
        display: block;
        position: relative;
        z-index: 1001;
        background: none;
        border: none;
        padding: 10px;
        right: 0;
    }

    .hamburger-box {
        width: 30px;
        height: 24px;
        display: flex;
        position: relative;
    }

    .hamburger-inner,
    .hamburger-inner::before,
    .hamburger-inner::after {
        width: 30px;
        height: 3px;
        border-radius: 3px;
        position: absolute;
        transition: transform 0.3s ease-in-out, top 0.3s ease-in-out, background-color 0.3s ease;
    }

    .hamburger-inner {
        top: 50%;
        transform: translateY(-50%);
    }

    .hamburger-inner::before,
    .hamburger-inner::after {
        content: '';
    }

    .hamburger-inner::before {
        top: -10px;
    }

    .hamburger-inner::after {
        top: 10px;
    }

    .site-header--dark .hamburger-inner,
    .site-header--dark .hamburger-inner::before,
    .site-header--dark .hamburger-inner::after {
        background-color: var(--text-light);
    }

    .site-header--dark.scrolled .hamburger-inner,
    .site-header--dark.scrolled .hamburger-inner::before,
    .site-header--dark.scrolled .hamburger-inner::after,
    .site-header--dark.is-scrolled .hamburger-inner,
    .site-header--dark.is-scrolled .hamburger-inner::before,
    .site-header--dark.is-scrolled .hamburger-inner::after,
    .site-header--light .hamburger-inner,
    .site-header--light .hamburger-inner::before,
    .site-header--light .hamburger-inner::after {
        background-color: var(--text-dark);
    }

    .hamburger.is-active .hamburger-inner {
        background-color: transparent !important;
    }

    .hamburger.is-active .hamburger-inner::before {
        top: 0;
        transform: rotate(45deg);
    }

    .hamburger.is-active .hamburger-inner::after {
        top: 0;
        transform: rotate(-45deg);
    }

    .hamburger.is-active .hamburger-inner::before,
    .hamburger.is-active .hamburger-inner::after {
        background-color: var(--text-light) !important;
    }
}

@media (max-width: 767px) {
    .header-actions {
        margin-left: auto;
    }

    .lang-switcher {
        order: -1;
    }

    header .logo,
    .site-header .logo {
        width: 125px;
        height: 44px;
    }

    header .logo img,
    .site-header .logo img {
        height: 44px;
        max-width: 180px;
        max-height: 44px;
    }
}