/* ==========================================================================
   BBB Layout
   Container, Grid, Header, Navigation, Footer
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-pad);
    padding-right: var(--container-pad);
}

.section {
    padding: var(--sp-16) 0;
}
.section--lg { padding: var(--sp-24) 0; }
.section--sm { padding: var(--sp-10) 0; }
.section--alt { background: var(--color-bg-alt); }
.section--wine {
    background: linear-gradient(135deg, var(--color-bordeaux) 0%, var(--color-bordeaux-dark) 100%);
    color: var(--color-text-inverse);
}
.section--wine h1, .section--wine h2, .section--wine h3 { color: var(--color-text-inverse); }
.section--wine a { color: var(--color-gold-soft); }

.grid {
    display: grid;
    gap: var(--sp-6);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

@media (max-width: 900px) {
    .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
    .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* --- Site Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-overlay);
    isolation: isolate;
    background: color-mix(in srgb, var(--color-bg) 96%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--color-border);
    min-height: var(--header-height);
    display: flex;
    align-items: center;
}

/* Mobile: opaker Header, kein backdrop-filter (iOS-Safari-Bug:
   sticky + backdrop-filter kann andere Elemente ueberlagern). */
@media (max-width: 860px) {
    .site-header {
        background: var(--color-bg);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: 0 1px 0 var(--color-border);
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-6);
    width: 100%;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-3);
    font-family: var(--font-display);
    font-size: var(--fs-20);
    font-weight: var(--fw-bold);
    color: var(--color-text);
    letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; color: var(--color-bordeaux); }

.brand__mark {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-bordeaux) 0%, var(--color-bordeaux-light) 100%);
    color: var(--color-text-inverse);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--fw-bold);
    font-size: var(--fs-16);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

/* --- Main Nav --- */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
}

.main-nav__list {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav__link {
    display: inline-flex;
    align-items: center;
    padding: var(--sp-2) var(--sp-4);
    min-height: 44px;
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--fs-14);
    font-weight: var(--fw-medium);
    transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.main-nav__link:hover {
    background: var(--color-surface-soft);
    color: var(--color-bordeaux);
    text-decoration: none;
}

.main-nav__link[aria-current="page"] {
    background: var(--color-bordeaux);
    color: var(--color-text-inverse);
}

/* Hamburger */
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    padding: 0;
    color: var(--color-text);
}
.nav-toggle__bars {
    display: inline-block;
    position: relative;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
    content: "";
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--dur-base) var(--ease-out), top var(--dur-base) var(--ease-out);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after  { top:  6px; }

@media (max-width: 860px) {
    .nav-toggle { display: inline-flex; }
    .main-nav {
        position: fixed;
        inset: var(--header-height) 0 0 0;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border);
        padding: var(--sp-6);
        transform: translateY(-110%);
        transition: transform var(--dur-base) var(--ease-out);
        overflow-y: auto;
    }
    .main-nav[data-open="true"] { transform: translateY(0); }
    .main-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--sp-1);
    }
    .main-nav__link {
        width: 100%;
        font-size: var(--fs-18);
        padding: var(--sp-4);
    }
}

/* --- Footer --- */
.site-footer {
    margin-top: auto;
    background: var(--color-bordeaux-dark);
    color: var(--color-text-inverse);
    padding: var(--sp-16) 0 var(--sp-8);
}

.site-footer h3 {
    color: var(--color-gold-soft);
    font-size: var(--fs-14);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--sp-4);
}

.site-footer a {
    color: var(--color-text-inverse);
    opacity: 0.85;
}
.site-footer a:hover {
    opacity: 1;
    color: var(--color-gold-soft);
}

.site-footer__grid {
    display: grid;
    gap: var(--sp-8);
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    margin-bottom: var(--sp-10);
}

@media (max-width: 900px) {
    .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
    .site-footer__grid { grid-template-columns: 1fr; }
}

.site-footer__list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.site-footer__list li { margin: 0 0 var(--sp-2); }

.site-footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--sp-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-4);
    font-size: var(--fs-14);
    opacity: 0.75;
    flex-wrap: wrap;
}

/* --- Main --- */
main {
    flex: 1 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    font-size: var(--fs-14);
    color: var(--color-text-muted);
    margin-bottom: var(--sp-4);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-bordeaux); }
.breadcrumb__sep { margin: 0 var(--sp-2); opacity: 0.5; }