/**
 * VHP Theme PoC - Main Stylesheet
 *
 * Professional, industrial design for Vision Hardware Partner
 * Professioneel maar niet schreeuwend - Clean and modern
 *
 * @package VHP_Theme_PoC
 * @version 0.1.0-poc
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Colors - Primary (VHP groen - originele huisstijl) */
    --color-primary: #4a9c2d;
    --color-primary-dark: #3a7d24;
    --color-primary-light: #e8f5e3;

    /* Colors - Secondary (neutraal grijs) */
    --color-secondary: #555555;
    --color-secondary-dark: #333333;

    /* Colors - Neutrals */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #d0d0d0;
    --color-background: #ffffff;
    --color-background-alt: #f5f5f5;
    --color-background-hover: #eeeeee;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;

    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Container */
    --container-max-width: 1200px;

    /* Transitions */
    --transition-fast: 0.1s ease;
    --transition-normal: 0.2s ease;
}

/* ==========================================================================
   Base
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    color: var(--color-text);
    line-height: 1.6;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    gap: 2rem;
}

/* Branding */
.site-branding {
    flex-shrink: 0;
}

.site-title {
    color: var(--color-text);
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    display: block;
    margin: 0;
    line-height: 1.2;
}

.site-title:hover {
    color: var(--color-primary);
}

.site-tagline {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin: 0.25rem 0 0;
}

/* ==========================================================================
   Main Navigation
   ========================================================================== */
.main-navigation {
    flex-grow: 1;
}

.main-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.25rem;
}

.main-menu > li {
    position: relative;
}

.main-menu > li > a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9375rem;
    white-space: nowrap;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.main-menu > li > a:hover,
.main-menu > li.submenu-open > a,
.main-menu > li.current-menu-item > a {
    background: var(--color-background-hover);
    color: var(--color-primary);
}

/* Submenu */
.main-menu .sub-menu {
    list-style: none;
    margin: 0;
    padding: 0.5rem 0;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: white;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
}

.main-menu > li.submenu-open > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-menu .sub-menu li a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--color-text);
    transition: background-color var(--transition-fast);
}

.main-menu .sub-menu li a:hover {
    background: var(--color-background-hover);
    color: var(--color-primary);
}

/* ==========================================================================
   Mobile Menu Toggle
   ========================================================================== */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.menu-toggle__bar {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Mobile menu open state */
body.menu-open .menu-toggle__bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

body.menu-open .menu-toggle__bar:nth-child(2) {
    opacity: 0;
}

body.menu-open .menu-toggle__bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */
.breadcrumbs {
    background: var(--color-background-alt);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumbs__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.breadcrumbs a {
    color: var(--color-text-light);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}

.breadcrumbs__separator {
    margin: 0 0.5rem;
    color: var(--color-text-light);
}

.breadcrumbs__current {
    color: var(--color-text);
    font-weight: 500;
}

/* ==========================================================================
   Main Content
   ========================================================================== */
.site-main {
    min-height: 60vh;
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--color-primary-dark);
    color: white;
    padding: 2rem 1rem;
    text-align: center;
}

.site-footer__inner {
    max-width: 1200px;
    margin: 0 auto;
}

.site-footer a {
    color: rgba(255, 255, 255, 0.8);
}

.site-footer a:hover {
    color: white;
}

/* ==========================================================================
   Responsive - Mobile
   ========================================================================== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .main-navigation {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-primary);
        padding: 5rem 1rem 1rem;
        transition: right var(--transition-normal);
        overflow-y: auto;
    }

    body.menu-open .main-navigation {
        right: 0;
    }

    .main-menu {
        flex-direction: column;
        gap: 0;
    }

    .main-menu > li > a {
        padding: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.1);
        border-radius: 0;
        padding: 0;
    }

    .main-menu .sub-menu li a {
        color: rgba(255, 255, 255, 0.9);
        padding-left: 2rem;
    }

    .main-menu .sub-menu li a:hover {
        background: rgba(255, 255, 255, 0.1);
        color: white;
    }

    .site-header__inner {
        padding: 0.75rem 1rem;
    }

    .site-tagline {
        display: none;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: 4rem 1rem;
    text-align: center;
}

.hero__content {
    max-width: 800px;
    margin: 0 auto;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 1rem;
}

.hero__tagline {
    font-size: 1.25rem;
    opacity: 0.9;
    margin: 0;
}

/* ==========================================================================
   Quick Navigation / Nav Cards
   ========================================================================== */
.quick-nav {
    padding: 3rem 1rem;
    background: var(--color-background);
}

.quick-nav__inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 1.75rem;
    margin: 0 0 2rem;
    color: var(--color-primary);
}

.quick-nav__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Nav Card */
.nav-card {
    display: block;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.nav-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
    color: var(--color-text);
}

.nav-card__image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-background-alt);
}

.nav-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.nav-card:hover .nav-card__image img {
    transform: scale(1.05);
}

.nav-card__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-background-alt) 0%, var(--color-border) 100%);
}

.nav-card__content {
    padding: 1.25rem;
}

.nav-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--color-primary);
}

.nav-card__excerpt {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.5;
}

/* ==========================================================================
   Responsive - Quick Nav
   ========================================================================== */
@media (max-width: 992px) {
    .quick-nav__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .quick-nav__grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .hero__tagline {
        font-size: 1rem;
    }
}

/* ==========================================================================
   Product Archive
   ========================================================================== */
.archive-header {
    text-align: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 2rem;
}

.archive-header h1 {
    margin: 0 0 0.5rem;
    color: var(--color-primary);
}

.archive-description {
    color: var(--color-text-light);
    margin: 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.no-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--color-text-light);
}

/* Product Card */
.product-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.product-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

.product-card__image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-background-alt);
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-card:hover .product-card__image img {
    transform: scale(1.05);
}

.product-card__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-background-alt) 0%, var(--color-border) 100%);
}

.product-card__content {
    padding: 1.25rem;
}

.product-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
}

.product-card__title a {
    color: var(--color-primary);
    text-decoration: none;
}

.product-card:hover .product-card__title a {
    color: var(--color-primary);
}

.product-card__pitch {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.5;
}

/* Archive Pagination */
.archive-pagination {
    margin-top: 3rem;
    text-align: center;
}

.archive-pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.archive-pagination a,
.archive-pagination span {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.archive-pagination a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.archive-pagination .current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Responsive - Products Grid */
@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Single Product
   ========================================================================== */
.product-single__layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    align-items: start;
}

.product-single__main {
    min-width: 0;
}

/* Product Header */
.product-header {
    margin-bottom: 2rem;
}

.product-image {
    margin-bottom: 1.5rem;
}

.product-image a {
    display: block;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-image .zoom-hint {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product-image a:hover .zoom-hint {
    opacity: 1;
}

.product-image a:hover {
    cursor: zoom-in;
}

.product-title {
    font-size: 2rem;
    margin: 0 0 1rem;
    color: var(--color-primary);
}

.product-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.6;
}

/* Product Content */
.product-content {
    margin-bottom: 2rem;
}

.product-content h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--color-primary);
}

.product-content ul,
.product-content ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.product-content li {
    margin-bottom: 0.5rem;
}

/* Product Specs */
.product-specs {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.product-specs h2 {
    font-size: 1.25rem;
    margin: 0 0 1rem;
    color: var(--color-primary);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table th,
.specs-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.specs-table th {
    width: 30%;
    color: var(--color-text-light);
    font-weight: 500;
}

/* ==========================================================================
   Sidebar / Context Kolom
   ========================================================================== */
.product-sidebar,
.context-sidebar {
    position: sticky;
    top: 5rem;
}

.sidebar-section {
    background: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.sidebar-section h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin: 0 0 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-primary);
}

/* Contact Info */
.contact-details {
    font-style: normal;
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.sidebar-contact-info p {
    margin: 0.5rem 0;
    font-size: 0.875rem;
}

.sidebar-contact-info a {
    color: var(--color-primary);
}

.sidebar-contact-info a:hover {
    text-decoration: underline;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Downloads */
.downloads-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.download-item {
    margin-bottom: 0.75rem;
}

.download-link {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: white;
    border-radius: 4px;
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.download-link:hover {
    background: var(--color-primary);
    color: white;
}

.download-icon {
    flex-shrink: 0;
    opacity: 0.7;
}

.download-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.download-title {
    font-weight: 500;
}

.download-file {
    font-size: 0.75rem;
    opacity: 0.7;
}

.downloads-note {
    margin: 1rem 0 0;
    color: var(--color-text-light);
}

/* Contact CTA */
.sidebar-contact p {
    margin: 0 0 1rem;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
}

.contact-phone {
    margin-top: 1rem;
    font-size: 0.875rem;
}

.contact-phone a {
    color: var(--color-primary);
}

/* ==========================================================================
   Lightbox
   ========================================================================== */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.2s ease;
    padding: 2rem;
}

.lightbox-overlay.lightbox-visible {
    opacity: 1;
}

.lightbox-overlay img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
}

.lightbox-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    transition: background var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   Responsive - Single Product & Pages
   ========================================================================== */
@media (max-width: 768px) {
    .product-single__layout {
        grid-template-columns: 1fr;
    }

    .product-sidebar,
    .context-sidebar {
        position: static;
    }

    .product-title {
        font-size: 1.5rem;
    }
}

/* ==========================================================================
   Page Template
   ========================================================================== */
.page-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.page-content {
    min-width: 0;
}

.page-content h1 {
    margin: 0 0 var(--spacing-lg);
    color: var(--color-text);
    font-size: 1.75rem;
}

@media (max-width: 768px) {
    .page-layout {
        grid-template-columns: 1fr;
    }
}

.entry-content {
    line-height: 1.8;
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.entry-content p {
    margin-bottom: var(--spacing-md);
}

.entry-content ul,
.entry-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.entry-content li {
    margin-bottom: var(--spacing-xs);
}

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.entry-content a {
    color: var(--color-primary);
}

.entry-content a:hover {
    color: var(--color-primary-dark);
}

/* ==========================================================================
   Index / Archive Fallback
   ========================================================================== */
.content-area {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.content-area article {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.content-area article:last-child {
    border-bottom: none;
}

.content-area h2 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.content-area h2 a {
    color: var(--color-primary);
    text-decoration: none;
}

.content-area h2 a:hover {
    color: var(--color-primary);
}