/* ============================================================
   NAVIGATION – Header & Hauptmenü
   ============================================================ */

/* ---- Site Header ---- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
    height: 76px;
}

.site-header.scrolled {
    border-bottom-color: var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.nav-wrapper {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--section-px);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

/* ---- Logo ---- */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo__icon {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    transition: background var(--transition-fast);
}

.nav-logo:hover .nav-logo__icon {
    background: var(--color-primary-hover);
}

.nav-logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-logo__name {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
}

.nav-logo__title {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ---- Main Navigation ---- */
.nav-main {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    flex: 1;
    justify-content: center;
}

.nav-main__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.nav-main__link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: var(--space-3);
    right: var(--space-3);
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-main__link:hover {
    color: var(--color-text);
    background: var(--color-primary-subtle);
}

.nav-main__link:hover::after,
.nav-main__link.active::after {
    transform: scaleX(1);
}

.nav-main__link.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown__menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: var(--space-2) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-8px);
    transition: all var(--transition-base);
    pointer-events: none;
    z-index: var(--z-dropdown);
}

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

.nav-dropdown__item {
    display: block;
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.nav-dropdown__item:hover {
    color: var(--color-primary);
    background: var(--color-primary-subtle);
    padding-left: var(--space-7);
}

/* ---- Nav Actions ---- */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.nav-phone:hover { color: var(--color-primary); }

.nav-phone svg {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

/* ---- Hamburger ---- */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: none;
    border: none;
    transition: background var(--transition-fast);
}

.nav-toggle:hover { background: var(--color-primary-subtle); }

.nav-toggle__line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle.open .nav-toggle__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open .nav-toggle__line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.nav-toggle.open .nav-toggle__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Navigation ---- */
.nav-mobile {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    z-index: calc(var(--z-sticky) - 1);
    padding: var(--space-6);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    border-top: 1px solid var(--color-border-light);
}

.nav-mobile.open {
    transform: translateX(0);
    display: block;
}

.nav-mobile__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-2);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    transition: color var(--transition-fast);
}

.nav-mobile__link:hover,
.nav-mobile__link.active {
    color: var(--color-primary);
}

.nav-mobile__cta {
    margin-top: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* ---- Page spacing (kompensiert fixed header) ---- */
.page-content {
    padding-top: 76px;
}

/* ============================================================
   RESPONSIVE NAVIGATION
   ============================================================ */
@media (max-width: 1024px) {
    .nav-main {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-phone {
        display: none;
    }
}

@media (max-width: 768px) {
    .site-header { height: 68px; }
    .page-content { padding-top: 68px; }
    .nav-mobile { top: 68px; }
}