/**
 * Site header / navigatie – kleur, scroll-state, desktop + mobiel
 */

:root {
    --nav-bg: linear-gradient(135deg, var(--color-primary-light, #ecfdf5) 0%, #f0fdf4 45%, #ffffff 100%);
    --nav-bg-scrolled: rgba(255, 255, 255, 0.92);
    --nav-accent: var(--color-primary, #059669);
    --nav-accent-soft: var(--color-primary-soft, rgba(5, 150, 105, 0.12));
    --nav-text: #374151;
    --nav-text-hover: var(--color-primary-hover, #047857);
    --nav-shadow: 0 4px 24px rgba(5, 150, 105, 0.08), 0 1px 0 rgba(5, 150, 105, 0.06);
    --nav-shadow-scrolled: 0 8px 32px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(5, 150, 105, 0.1);
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 50;
    background: var(--nav-bg);
    border-bottom: 1px solid rgba(5, 150, 105, 0.12);
    will-change: transform;
    transition:
        transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
        background 0.35s ease,
        box-shadow 0.35s ease,
        border-color 0.35s ease,
        backdrop-filter 0.35s ease;
}

.site-header.is-hidden {
    transform: translateY(-110%);
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .site-header.is-hidden {
        transition-duration: 0.1s;
    }
}

.site-header.is-scrolled {
    background: var(--nav-bg-scrolled);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: rgba(5, 150, 105, 0.18);
    box-shadow: var(--nav-shadow-scrolled);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.site-header__logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #111827;
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: color 0.25s ease, transform 0.25s ease;
}

.site-header__logo:hover {
    color: var(--nav-accent);
}

.site-header.is-scrolled .site-header__logo {
    color: #065f46;
}

/* Desktop navigatie */
.site-nav {
    display: none;
    align-items: center;
    gap: 2rem;
    font-weight: 500;
    font-size: 0.9375rem;
}

@media (min-width: 768px) {
    .site-nav {
        display: flex;
    }
}

.site-nav__link {
    position: relative;
    color: var(--nav-text);
    text-decoration: none;
    padding: 0.35rem 0;
    transition: color 0.25s ease;
}

.site-nav__link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--nav-accent), #34d399);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
    color: var(--nav-text-hover);
    outline: none;
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after {
    transform: scaleX(1);
}

.site-nav__link--cta {
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    background: var(--nav-accent-soft);
    color: #065f46;
    border: 1px solid rgba(5, 150, 105, 0.25);
    transition:
        background 0.25s ease,
        border-color 0.25s ease,
        color 0.25s ease,
        box-shadow 0.25s ease;
}

.site-nav__link--cta::after {
    display: none;
}

.site-nav__link--cta:hover,
.site-nav__link--cta:focus-visible {
    background: rgba(5, 150, 105, 0.2);
    border-color: rgba(5, 150, 105, 0.45);
    color: #047857;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.2);
}

.site-header.is-scrolled .site-nav__link {
    color: #1f2937;
}

.site-header.is-scrolled .site-nav__link:hover,
.site-header.is-scrolled .site-nav__link:focus-visible {
    color: var(--nav-accent);
}

/* Mobiel menu-knop */
.site-header__menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: none;
    border-radius: 0.75rem;
    background: var(--nav-accent-soft);
    color: #065f46;
    cursor: pointer;
    transition:
        background 0.25s ease,
        color 0.25s ease,
        transform 0.2s ease;
}

.site-header__menu-btn:hover,
.site-header__menu-btn:focus-visible {
    background: rgba(5, 150, 105, 0.22);
    color: #047857;
    outline: none;
}

.site-header__menu-btn:active {
    transform: scale(0.96);
}

.site-header__menu-btn[aria-expanded='true'] {
    background: rgba(5, 150, 105, 0.28);
}

@media (min-width: 768px) {
    .site-header__menu-btn {
        display: none;
    }
}

.site-header__menu-icon {
    display: block;
    width: 1.375rem;
    height: 1.125rem;
    position: relative;
}

.site-header__menu-icon span {
    display: block;
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.25s ease, top 0.3s ease;
}

.site-header__menu-icon span:nth-child(1) {
    top: 0;
}

.site-header__menu-icon span:nth-child(2) {
    top: 50%;
    margin-top: -1px;
}

.site-header__menu-icon span:nth-child(3) {
    bottom: 0;
}

.site-header__menu-btn[aria-expanded='true'] .site-header__menu-icon span:nth-child(1) {
    top: 50%;
    margin-top: -1px;
    transform: rotate(45deg);
}

.site-header__menu-btn[aria-expanded='true'] .site-header__menu-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.site-header__menu-btn[aria-expanded='true'] .site-header__menu-icon span:nth-child(3) {
    bottom: 50%;
    margin-bottom: -1px;
    transform: rotate(-45deg);
}

/* Mobiel panel */
.site-mobile-nav {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding-top: 0.25rem;
    padding-bottom: 0;
}

.site-mobile-nav.is-open {
    display: flex;
    padding-bottom: 1.25rem;
    animation: site-mobile-nav-in 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes site-mobile-nav-in {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 768px) {
    .site-mobile-nav {
        display: none !important;
    }

    .site-mobile-nav.is-open {
        display: none !important;
        animation: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-mobile-nav.is-open {
        animation: none;
    }
}

.site-mobile-nav__link {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: 0.75rem;
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 500;
    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
}

.site-mobile-nav__link:hover,
.site-mobile-nav__link:focus-visible {
    background: var(--nav-accent-soft);
    color: var(--nav-text-hover);
    outline: none;
}

.site-mobile-nav__link:active {
    transform: scale(0.99);
}

.site-mobile-nav__link--cta {
    margin-top: 0.25rem;
    text-align: center;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff !important;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.35);
}

.site-mobile-nav__link--cta:hover,
.site-mobile-nav__link--cta:focus-visible {
    background: linear-gradient(135deg, #059669, #047857);
    color: #fff !important;
}

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

@media (min-width: 768px) {
    body.site-mobile-nav-open {
        overflow: auto;
    }
}