/* ==========================================================================
   ARI/WE/SO — layout.css
   Header, Navigation, Mobile-Panel, Breadcrumbs, Grids, Footer
   ========================================================================== */

/* --- 1. Header ----------------------------------------------------------- */

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: var(--z-header);
    padding-block: 16px;
    background: transparent;
    transition: padding var(--dur-base) ease,
                background var(--dur-base) ease,
                box-shadow var(--dur-base) ease;
}

.site-header.is-scrolled {
    padding-block: 10px;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--line-subtle);
}

.header-inner {
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--container-pad);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

/* Marke — echtes Seitenverhältnis 109x88, wird nicht mehr gequetscht */
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    color: var(--text-strong);
    font-weight: 700;
    line-height: 1.1;
}

.brand img {
    width: auto;
    height: clamp(34px, 7vw, 44px);
    object-fit: contain;
}

.brand-text {
    display: none;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

/* --- 2. Desktop-Navigation ---------------------------------------------- */

.primary-nav { display: none; }

.nav-list {
    display: flex;
    align-items: center;
    gap: clamp(16px, 2.2vw, 30px);
}

.nav-list a {
    position: relative;
    display: inline-block;
    padding-block: 4px;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
}

.nav-list a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--dur-base) var(--ease-out);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after,
.nav-list a.is-active::after { width: 100%; }

.nav-list a.is-active { color: var(--text-strong); }

/* Der Header-CTA wird erst ab 992px eingeblendet.
   Darunter lebt er im Mobile-Panel — das war die Ursache dafür,
   dass der Burger-Button auf Smartphones aus dem Viewport geschoben wurde.
   Der Selektor ist bewusst zweistufig: components.css wird nach dieser
   Datei geladen und setzt auf .btn-primary ein display:inline-flex,
   das eine einstufige Regel hier überschreiben würde. */
.site-header .header-cta { display: none; flex-shrink: 0; }

/* --- 3. Burger-Button ---------------------------------------------------- */

.nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    padding: 10px 7px;
    border-radius: var(--radius-sm);
    z-index: calc(var(--z-nav-panel) + 1);
}

.nav-toggle .bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-main);
    border-radius: 2px;
    transition: transform var(--dur-base) var(--ease-out),
                opacity var(--dur-fast) ease;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* --- 4. Mobile-Panel ----------------------------------------------------- */

.nav-panel {
    position: fixed;
    inset: 0;
    z-index: var(--z-nav-panel);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--header-h) + 24px) var(--container-pad) 40px;
    background: rgba(10, 10, 12, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    /* visibility wird NICHT überblendet, sondern hart geschaltet:
       beim Öffnen sofort (Verzögerung 0s), beim Schließen erst nach dem
       Ausblenden (Verzögerung = Dauer). Würde visibility mit animiert,
       bliebe das Panel während der Einblendung "hidden" — seine Links
       wären dann nicht fokussierbar und die Tastaturbedienung liefe ins Leere. */
    transition: opacity var(--dur-base) ease,
                transform var(--dur-base) var(--ease-out),
                visibility 0s linear var(--dur-base);
}

.nav-panel.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity var(--dur-base) ease,
                transform var(--dur-base) var(--ease-out),
                visibility 0s linear 0s;
}

.nav-panel-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 32px;
}

.nav-panel-list a {
    display: block;
    padding: 14px 4px;
    color: var(--text-main);
    font-size: clamp(1.25rem, 5vw, 1.6rem);
    font-weight: 600;
    border-bottom: 1px solid var(--line-subtle);
    transition: color var(--dur-base) ease, padding-left var(--dur-base) var(--ease-out);
}

.nav-panel-list a:hover,
.nav-panel-list a:focus-visible { color: var(--neon-blue); padding-left: 12px; }
.nav-panel-list a.is-active { color: var(--neon-blue); }

.nav-panel-cta { width: 100%; }

.nav-panel-meta {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    font-size: var(--fs-small);
}
.nav-panel-meta a { color: var(--text-muted); }
.nav-panel-meta a:hover { color: var(--neon-blue); }

/* --- 5. Breakpoints Navigation ------------------------------------------ */

@media (min-width: 600px) {
    .brand-text { display: block; }
}

@media (min-width: 992px) {
    .primary-nav { display: block; }
    .site-header .header-cta { display: inline-flex; }
    .nav-toggle { display: none; }
    .nav-panel { display: none; }
}

/* --- 6. Breadcrumbs ------------------------------------------------------ */

.breadcrumb {
    padding-top: calc(var(--header-h) + 28px);
    padding-bottom: 4px;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: var(--fs-small);
    color: var(--text-muted);
}

.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li:not(:last-child)::after {
    content: '/';
    color: rgb(var(--rgb-blue) / 0.5);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--neon-blue); }
.breadcrumb [aria-current="page"] { color: var(--text-main); }

/* --- 7. Grids ------------------------------------------------------------ */

.layout-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap-lg);
    align-items: center;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap-md);
}

.grid-2 { display: grid; grid-template-columns: 1fr; gap: var(--gap-md); }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: var(--gap-md); }
.grid-4 { display: grid; grid-template-columns: 1fr; gap: var(--gap-md); }

@media (min-width: 640px) {
    .grid-2, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
    .layout-grid { grid-template-columns: 1fr 1fr; }
    .layout-grid.is-inverse .layout-grid-text { order: 2; }
    .cards-grid, .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
    .cards-grid, .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- 8. Footer ----------------------------------------------------------- */

.site-footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--line-subtle);
    padding: clamp(56px, 8vw, 80px) 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand img { height: 48px; width: auto; object-fit: contain; }

.footer-brand .brand-name {
    display: block;
    margin-top: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-strong);
}

.site-footer h4 {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    color: var(--text-strong);
}

.site-footer nav ul,
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--neon-blue); }

.footer-contact li { color: var(--text-muted); font-size: 0.95rem; }

.social-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 1.5rem; }
.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--text-muted);
    font-size: var(--fs-small);
    /* lange Adressen dürfen die Fußzeile auf Handys nicht sprengen */
    word-break: break-word;
}
.social-links a:hover { color: var(--neon-purple); }
.social-links svg { width: 18px; height: 18px; flex-shrink: 0; }

/* --- Profile in sozialen Netzwerken ------------------------------------- */

.social-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 1rem;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    /* 44px ist die Mindest-Touchfläche für Finger auf Mobilgeräten */
    width: 44px;
    height: 44px;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: color var(--dur-base) ease,
                border-color var(--dur-base) ease,
                background var(--dur-base) ease,
                transform var(--dur-base) var(--ease-out);
}

.social-icons a:hover,
.social-icons a:focus-visible {
    color: var(--neon-blue);
    border-color: rgb(var(--rgb-blue) / 0.45);
    background: rgb(var(--rgb-blue) / 0.07);
    transform: translateY(-2px);
}

.social-icons svg { width: 20px; height: 20px; }

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px 20px;
    padding-top: 24px;
    border-top: 1px solid var(--line-subtle);
    color: var(--text-muted);
    font-size: var(--fs-small);
    text-align: center;
}

@media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.1fr; }
    .footer-bottom { justify-content: space-between; text-align: left; }
}