/*
========================================
navigation.css
Hauptnavigation

Enthält:
- Desktop Navigation
- Background Dropdown
- Sticky Header
- Mobile Hamburger Menü
- Mobile Slide-in Navigation
- Scrollhinweis bei langen Menüs
========================================
*/

/*
========================================
Header-Grundfläche
========================================
*/

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;

    background: transparent;
    border: none;
    box-shadow: none;

    backdrop-filter: none;
    -webkit-backdrop-filter: none;

    transition:
        background 420ms ease,
        box-shadow 420ms ease,
        border-color 420ms ease,
        transform 420ms ease;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 1px solid rgba(16, 18, 20, 0.08);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.08);

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

.site-header.is-hidden {
    transform: translateY(-100%);
}

/*
========================================
Navigation Layout
========================================
*/

.nav-container {
    width: 100%;
    max-width: none;
    min-height: 82px;
    margin: 0;

    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;

    padding: 20px var(--container-padding);
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.nav-logo img {
    display: block;
    width: 80px;
    height: auto;
}

/*
========================================
Desktop Menü
========================================
*/

.nav-menu {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 45px;
}

.nav-link,
.nav-dropdown-button {
    position: relative;
    padding: 8px 0;

    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.88);

    background: transparent;

    transition:
        color var(--transition-fast),
        opacity var(--transition-fast);
}

.nav-link::after,
.nav-dropdown-button::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;

    width: 0;
    height: 1px;

    background: currentColor;
    transition: width var(--transition-medium);
}

.nav-link:hover::after,
.nav-dropdown-button:hover::after {
    width: 100%;
}

.nav-link:hover,
.nav-dropdown-button:hover {
    color: var(--color-white);
}

.nav-link.is-active {
    color: var(--color-white);
}

.site-header.is-scrolled .nav-link,
.site-header.is-scrolled .nav-dropdown-button {
    color: rgba(16, 18, 20, 0.76);
}

.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-dropdown-button:hover {
    color: var(--color-dark);
}

.site-header.is-scrolled .nav-link.is-active {
    color: var(--color-accent);
}

/*
========================================
Desktop Dropdown
========================================
*/

.nav-dropdown {
    position: relative;
}

.nav-dropdown-button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.dropdown-arrow {
    font-size: 10px;
    transform: translateY(1px);
    transition: transform var(--transition-medium);
}

.nav-dropdown:hover .dropdown-arrow {
    transform: translateY(1px) rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;

    min-width: 190px;
    padding: 12px;

    display: flex;
    flex-direction: column;
    gap: 2px;

    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(16, 18, 20, 0.08);
    border-radius: 18px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.16);

    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transform: translateX(-50%) translateY(8px);

    transition:
        opacity var(--transition-medium),
        visibility var(--transition-medium),
        transform var(--transition-medium);
}

.nav-dropdown-menu::before {
    content: "";
    position: absolute;
    top: -18px;
    left: 0;
    width: 100%;
    height: 18px;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
    display: block;
    padding: 11px 12px;

    font-size: 14px;
    font-weight: 600;
    color: var(--color-dark);

    border-radius: 12px;

    transition:
        background var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.nav-dropdown-menu a:hover {
    color: var(--color-accent);
    background: var(--color-gray-light);
    transform: translateX(3px);
}

/*
========================================
Hamburger Button
========================================
*/

.nav-toggle {
    display: none;
    position: relative;
    z-index: 1002;

    width: 42px;
    height: 42px;

    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-full);
}

.nav-toggle span {
    position: absolute;
    left: 12px;

    width: 18px;
    height: 2px;

    background: var(--color-white);
    border-radius: 99px;

    transition:
        transform var(--transition-medium),
        opacity var(--transition-medium),
        top var(--transition-medium),
        background var(--transition-medium);
}

.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 26px; }

.nav-toggle.is-active span:nth-child(1) {
    top: 20px;
    transform: rotate(45deg);
}

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

.nav-toggle.is-active span:nth-child(3) {
    top: 20px;
    transform: rotate(-45deg);
}

/*
========================================
Mobile Navigation
========================================
*/

@media (max-width: 1180px) {

    .nav-container {
        grid-template-columns: auto minmax(0, 1fr) auto;
        padding: 16px var(--container-padding);
    }

    .nav-logo {
        grid-column: 1;
        justify-self: start;
    }

    .nav-toggle {
        display: block;
        grid-column: 3;
        justify-self: end;

        width: 48px;
        height: 48px;

        background: rgba(11, 11, 11, 0.72);
        border: 1px solid rgba(223, 192, 106, 0.72);
        border-radius: var(--radius-full);

        box-shadow:
            0 12px 32px rgba(0, 0, 0, 0.28),
            0 0 20px rgba(196, 154, 58, 0.12);

        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .nav-toggle span {
        left: 13px;
        width: 22px;
        height: 2px;
        background: var(--piero-champagne, #f7e3aa);
    }

    .nav-toggle span:nth-child(1) { top: 15px; }
    .nav-toggle span:nth-child(2) { top: 23px; }
    .nav-toggle span:nth-child(3) { top: 31px; }

    .nav-toggle.is-active span:nth-child(1),
    .nav-toggle.is-active span:nth-child(3) {
        top: 23px;
    }

    .site-header.is-scrolled .nav-toggle {
        background: rgba(11, 11, 11, 0.78);
        border-color: rgba(196, 154, 58, 0.76);
    }

    .site-header.is-scrolled .nav-toggle span {
        background: var(--piero-champagne, #f7e3aa);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        z-index: 1001;

        width: min(420px, 100%);
        height: 100vh;
        height: 100svh;

        padding:
            clamp(125px, 17vh, 165px)
            32px
            32px;

        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        gap: 8px;

        overflow-x: hidden;
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;

        background:
            linear-gradient(
                180deg,
                rgba(255, 255, 255, 0.985),
                rgba(246, 241, 231, 0.985)
            );

        border-left: 1px solid rgba(122, 90, 29, 0.18);
        box-shadow: -24px 0 80px rgba(0, 0, 0, 0.22);

        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateX(100%);

        transition:
            transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
            opacity 250ms ease,
            visibility 0s linear 420ms;
    }

    .nav-menu.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateX(0);

        transition:
            transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
            opacity 250ms ease,
            visibility 0s linear 0s;
    }

    /* Scrollhinweis / Fade-out */
    .nav-menu::after {
        content: "";

        position: sticky;
        left: 0;
        bottom: -32px;
        z-index: 5;

        display: block;
        flex: 0 0 82px;

        width: calc(100% + 64px);
        min-height: 82px;

        margin-top: -82px;
        margin-right: -32px;
        margin-bottom: -32px;
        margin-left: -32px;

        background:
            linear-gradient(
                to bottom,
                rgba(246, 241, 231, 0),
                rgba(246, 241, 231, 0.88) 48%,
                rgba(246, 241, 231, 1) 100%
            );

        opacity: 0;
        visibility: hidden;
        pointer-events: none;

        transition:
            opacity 220ms ease,
            visibility 220ms ease;
    }

    .nav-menu.has-more-content:not(.is-at-bottom)::after {
        opacity: 1;
        visibility: visible;
    }

    .nav-menu .nav-link,
    .nav-menu .nav-dropdown-button {
        width: 100%;
        min-height: 54px;
        padding: 10px 0;

        display: flex;
        align-items: center;

        font-size: clamp(20px, 2.3vw, 24px);
        font-weight: 600;
        line-height: 1.2;
        color: var(--piero-black, #0b0b0b);
        text-align: left;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-dropdown-button:hover {
        color: var(--piero-gold-deep, #7a5a1d);
    }

    .nav-link::after,
    .nav-dropdown-button::after {
        display: none;
    }

    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown-button {
        justify-content: space-between;
    }

    .nav-dropdown-menu {
        position: static;

        min-width: 100%;
        margin-top: 4px;
        padding: 6px 0 10px 16px;

        display: none;

        background: transparent;
        border: none;
        border-radius: 0;
        box-shadow: none;

        backdrop-filter: none;
        -webkit-backdrop-filter: none;

        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }

    .nav-dropdown.is-open .nav-dropdown-menu {
        display: flex;
        transform: none;
    }

    .nav-dropdown-menu::before {
        display: none;
    }

    .nav-dropdown-menu a {
        padding: 9px 0;
        font-size: 16px;
        color: var(--text-secondary);
    }

    .nav-dropdown-menu a:hover {
        background: transparent;
        transform: none;
    }

    .nav-dropdown.is-open .dropdown-arrow {
        transform: rotate(180deg);
    }

    body.nav-open {
        overflow: hidden;
    }
}

/*
========================================
Kleine Mobilgeräte
========================================
*/

@media (max-width: 520px) {

    .nav-container {
        min-height: 76px;
        padding: 14px 20px;
    }

    .nav-logo img {
        width: 64px;
    }

    .nav-toggle {
        width: 46px;
        height: 46px;
    }

    .nav-toggle span {
        left: 12px;
        width: 22px;
    }

    .nav-menu {
        width: 100%;
        padding: 118px 24px 28px;
    }

    .nav-menu .nav-link,
    .nav-menu .nav-dropdown-button {
        font-size: 21px;
    }

    .nav-menu::after {
        bottom: -28px;
        width: calc(100% + 48px);

        margin-right: -24px;
        margin-bottom: -28px;
        margin-left: -24px;
    }
}

/*
========================================
Querformat mit geringer Höhe
========================================
*/

@media
    (orientation: landscape)
    and (max-height: 560px)
    and (max-width: 1180px) {

    .nav-container {
        min-height: 68px;
        padding-top: 9px;
        padding-bottom: 9px;
    }

    .nav-logo img {
        width: 56px;
    }

    .nav-toggle {
        width: 44px;
        height: 44px;
    }

    .nav-toggle span {
        left: 11px;
    }

    .nav-menu {
        padding-top: 88px;
    }
}

/*
========================================
Startseite

Nur auf der Startseite bleibt der Header
auch im Scrollzustand transparent.
Voraussetzung:
<body class="page-home">
========================================
*/

.page-home .site-header,
.page-home .site-header.is-scrolled,
.page-home .nav-container {
    background: transparent !important;
    border-color: transparent !important;
    box-shadow: none !important;
}

.page-home .site-header,
.page-home .site-header.is-scrolled {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}