/* ===================================
   KOELEWIJN CONSTRUCTIE - STYLE
   Industrial Metal & Welding Aesthetic
   =================================== */

/* CSS Variables */
:root {
    --color-bg: #0a0a0a;
    --color-bg-alt: #111111;
    --color-bg-card: #151515;
    --color-text: #e8e8e8;
    --color-text-muted: #888888;
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-accent: #60a5fa;
    --color-spark: #fbbf24;
    --color-spark-light: #fcd34d;
    --color-metal: #374151;
    --color-steel: #6b7280;
    
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Barlow', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    
    --container-max: 1200px;
    --container-padding: 2rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ===================================
   PRELOADER
   =================================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    display: flex;
    gap: 8px;
}

.spark {
    width: 12px;
    height: 12px;
    background: var(--color-spark);
    border-radius: 50%;
    animation: spark-pulse 1.2s ease-in-out infinite;
    box-shadow: 0 0 20px var(--color-spark), 0 0 40px var(--color-spark-light);
}

.spark:nth-child(2) { animation-delay: 0.2s; }
.spark:nth-child(3) { animation-delay: 0.4s; }

@keyframes spark-pulse {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(0.5);
        opacity: 0.5;
    }
}

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: background-color var(--transition-medium), padding var(--transition-medium);
}

.navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.75rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    height: 50px;
    width: auto;
    transition: transform var(--transition-fast);
}

.logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-medium);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.cta-btn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    color: white;
}

.nav-link.cta-btn::after {
    display: none;
}

.nav-link.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-alt);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        transition: right var(--transition-medium);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(10, 10, 10, 0.95) 0%, rgba(17, 17, 17, 0.9) 50%, rgba(10, 10, 10, 0.95) 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23222" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    background-size: cover, 100px 100px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, var(--color-bg) 70%);
}

/* Welding Sparks Animation */
.sparks-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.welding-spark {
    position: absolute;
    left: var(--x);
    top: var(--y);
    width: 4px;
    height: 4px;
    background: var(--color-spark);
    border-radius: 50%;
    animation: spark-fly 3s ease-in-out infinite;
    animation-delay: var(--delay);
    box-shadow: 0 0 10px var(--color-spark), 0 0 20px var(--color-spark-light);
}

@keyframes spark-fly {
    0% {
        opacity: 0;
        transform: translate(0, 0) scale(0);
    }
    10% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(calc(50px - 100px * var(--random, 0.5)), 100px) scale(0);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 var(--container-padding);
    max-width: 900px;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    font-family: var(--font-body);
    font-weight: 300;
    font-size: clamp(1rem, 3vw, 1.5rem);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.5s;
}

.title-main {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 7rem);
    line-height: 1;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-steel) 50%, var(--color-text) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.7s;
}

.title-accent {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    color: var(--color-primary);
    letter-spacing: 0.05em;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.9s;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1.1s;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 1.3s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 2s;
}

.scroll-indicator span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { 
        opacity: 1;
        transform: scaleY(1);
    }
    50% { 
        opacity: 0.5;
        transform: scaleY(0.8);
    }
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-medium);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-steel);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-accent);
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1rem;
}

/* ===================================
   SECTION COMMON STYLES
   =================================== */
section {
    padding: 6rem 0;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 3rem;
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 2rem;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: translateY(-50%);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

.text-accent {
    color: var(--color-primary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header .section-tag {
    padding-left: 0;
}

.section-header .section-tag::before {
    display: none;
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background: var(--color-bg-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.about-stats {
    display: flex;
    gap: 3rem;
    margin-top: 2.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-primary);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.5rem;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.image-frame img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.image-frame:hover img {
    transform: scale(1.05);
}

.image-accent {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    z-index: -1;
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image {
        order: -1;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: 2rem;
    }
}

/* ===================================
   SERVICES SECTION
   =================================== */
.services {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-bg-card);
    padding: 2.5rem;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-medium);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.service-card:hover .service-icon {
    color: var(--color-accent);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.service-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-hover-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-medium);
}

.service-card:hover .service-hover-line {
    width: 100%;
}

/* ===================================
   PORTFOLIO SECTION
   =================================== */
.portfolio {
    background: var(--color-bg-alt);
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--color-steel);
    color: var(--color-text-muted);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.portfolio-image {
    width: 100%;
    height: 100%;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(to top, rgba(10, 10, 10, 0.95) 0%, transparent 100%);
    transform: translateY(100%);
    transition: transform var(--transition-medium);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.portfolio-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.portfolio-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-overlay {
        transform: translateY(0);
    }
}

/* ===================================
   VIDEO SECTION
   =================================== */
.video-section {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.video-item {
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.video-item video {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: #000;
}

.video-item h3 {
    padding: 1.25rem;
    font-size: 1.1rem;
    color: var(--text-primary);
    text-align: center;
    margin: 0;
}

@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .video-item video {
        max-width: 100%;
        height: auto;
    }
    
    .video-item h3 {
        font-size: 1rem;
        padding: 1rem;
    }
}

/* Portfolio filter mobile fix */
@media (max-width: 768px) {
    .portfolio-filter {
        gap: 0.5rem;
        padding: 0 1rem;
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .portfolio-filter::-webkit-scrollbar {
        display: none;
    }
    
    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        white-space: nowrap;
        flex-shrink: 0;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
}

/* ===================================
   CTA SECTION
   =================================== */
.cta-section {
    position: relative;
    padding: 8rem 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-bg) 50%, var(--color-primary-dark) 100%);
    opacity: 0.1;
}

.cta-sparks {
    position: absolute;
    width: 100%;
    height: 100%;
}

.cta-spark {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--color-spark);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--color-spark);
    animation: cta-spark-move 4s ease-in-out infinite;
}

.cta-spark:nth-child(1) {
    left: 20%;
    top: 30%;
    animation-delay: 0s;
}

.cta-spark:nth-child(2) {
    left: 70%;
    top: 50%;
    animation-delay: 1.5s;
}

.cta-spark:nth-child(3) {
    left: 50%;
    top: 70%;
    animation-delay: 3s;
}

@keyframes cta-spark-move {
    0%, 100% {
        opacity: 0;
        transform: scale(0);
    }
    20% {
        opacity: 1;
        transform: scale(1);
    }
    80% {
        opacity: 1;
        transform: scale(1) translate(30px, -30px);
    }
}

.cta-content {
    position: relative;
    text-align: center;
    z-index: 1;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto 2rem;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-intro {
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--color-bg-card);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-text a,
.contact-text span {
    font-size: 1.05rem;
    transition: color var(--transition-fast);
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-bg-card);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-steel);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-group select {
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    background-size: 20px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group label {
    position: absolute;
    left: 0;
    top: 1rem;
    color: var(--color-text-muted);
    font-size: 1rem;
    pointer-events: none;
    transition: all var(--transition-fast);
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: -0.75rem;
    font-size: 0.8rem;
    color: var(--color-primary);
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-medium);
}

.form-group input:focus ~ .form-line,
.form-group select:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
    width: 100%;
}

.btn-submit {
    align-self: flex-start;
}

.btn-submit svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.btn-submit:hover svg {
    transform: translateX(5px);
}

@media (max-width: 900px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-bg-alt);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

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

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

.footer-contact p {
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-bottom .powered-by {
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

.footer-bottom .powered-by a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.footer-bottom .powered-by a:hover {
    color: var(--color-accent);
}

@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
}

/* ===================================
   UTILITIES & ANIMATIONS
   =================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    section {
        padding: 4rem 0;
    }
    
    :root {
        --container-padding: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

/* Portfolio Item Hidden State */
.portfolio-item.hidden {
    display: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-steel);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: white;
}

/* ===================================
   SOCIAL FLOATING BUTTONS
   =================================== */
.social-float-buttons {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

.social-float {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all var(--transition-medium);
}

.social-float svg {
    width: 32px;
    height: 32px;
}

.social-float:hover {
    transform: scale(1.1);
}

.whatsapp-float {
    background: #25D366;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
}

.whatsapp-float:hover {
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.facebook-float {
    background: #1877F2;
    box-shadow: 0 4px 20px rgba(24, 119, 242, 0.4);
}

.facebook-float:hover {
    box-shadow: 0 6px 30px rgba(24, 119, 242, 0.6);
}

/* WhatsApp Button Style */
.btn-whatsapp {
    background: #25D366;
    color: white;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background: #20bd5a;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
    color: white;
}

.btn-whatsapp svg {
    flex-shrink: 0;
}

/* ===================================
   PRODUCTS HIGHLIGHT SECTION
   =================================== */
.products-highlight {
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    padding: 6rem 0;
}

.section-subtitle {
    color: var(--color-text-muted);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 3rem;
}

.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.main-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.main-image:hover img {
    transform: scale(1.02);
}

.thumbnail-row {
    display: flex;
    gap: 1rem;
}

.thumbnail {
    flex: 1;
    border: 2px solid transparent;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: none;
    padding: 0;
}

.thumbnail img {
    width: 100%;
    height: 80px;
    object-fit: cover;
}

.thumbnail:hover,
.thumbnail.active {
    border-color: var(--color-primary);
}

.thumbnail.active {
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.product-info {
    padding: 1rem 0;
}

.product-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.product-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.product-description {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.product-features {
    margin-bottom: 2.5rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.product-features li:last-child {
    border-bottom: none;
}

.product-features svg {
    width: 24px;
    height: 24px;
    color: #25D366;
    flex-shrink: 0;
}

.product-features span {
    font-size: 1.05rem;
}

.product-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.product-cta .btn {
    justify-content: center;
}

@media (max-width: 900px) {
    .product-showcase {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-gallery {
        position: relative;
        top: 0;
    }
    
    .main-image img {
        height: 300px;
    }
}

/* ===================================
   FEATURED SERVICE CARD
   =================================== */
.service-card.featured {
    border: 2px solid var(--color-primary);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, var(--color-bg-card) 100%);
    position: relative;
}

.service-card .service-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, #25D366, #20bd5a);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--color-primary);
    font-weight: 600;
    transition: color var(--transition-fast);
}

.service-link:hover {
    color: var(--color-accent);
}

/* ===================================
   FEATURED PORTFOLIO ITEM
   =================================== */
.portfolio-item.featured-item {
    grid-column: span 1;
    border: 2px solid var(--color-primary);
    box-shadow: 0 10px 40px rgba(59, 130, 246, 0.2);
}

.portfolio-item.featured-item .portfolio-overlay {
    transform: translateY(0);
    background: linear-gradient(to top, rgba(10, 10, 10, 0.98) 0%, rgba(10, 10, 10, 0.7) 50%, transparent 100%);
}

/* ===================================
   WHATSAPP CONTACT HIGHLIGHT
   =================================== */
.contact-item.whatsapp-highlight {
    background: rgba(37, 211, 102, 0.1);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid rgba(37, 211, 102, 0.3);
}

.contact-icon.whatsapp-icon {
    background: #25D366;
}

.contact-icon.whatsapp-icon svg {
    color: white;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer additions */
.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-link.whatsapp {
    background: #25D366;
    color: white;
}

.social-link.whatsapp:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

.social-link.facebook {
    background: #1877F2;
    color: white;
}

.social-link.facebook:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(24, 119, 242, 0.4);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.footer-address {
    margin-top: 0.5rem;
    line-height: 1.6;
}

.footer-kvk {
    font-size: 0.85rem;
    color: var(--color-steel);
    margin-top: 0.5rem;
}

/* Portfolio More Button */
.portfolio-more {
    text-align: center;
    margin-top: 3rem;
}

/* Portfolio grid expansion for more items */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

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

/* ===================================
   OPROLSYSTEEM VARIANTEN SECTIE
   =================================== */
.variants-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.variants-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-accent);
    text-align: center;
    margin-bottom: 2rem;
    letter-spacing: 1px;
}

.variants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.variant-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-medium);
}

.variant-card:hover {
    background: rgba(74, 144, 217, 0.1);
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.variant-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.variant-card h4 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.variant-card p {
    color: var(--color-steel);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ===================================
   ONDERSTEL PRODUCT CARD
   =================================== */
.product-card-alt {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.8), rgba(22, 33, 62, 0.8));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
}

.product-card-content {
    padding: 2.5rem;
}

.product-card-alt .product-badge {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.product-card-alt .product-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-light);
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.product-card-alt .product-description {
    color: var(--color-steel);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-features-compact {
    list-style: none;
    margin-bottom: 1.5rem;
}

.product-features-compact li {
    color: var(--color-light);
    padding: 0.4rem 0;
    font-size: 0.95rem;
}

.product-card-image {
    position: relative;
    overflow: hidden;
}

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

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

@media (max-width: 768px) {
    .product-card-alt {
        grid-template-columns: 1fr;
    }
    
    .product-card-image {
        height: 250px;
        order: -1;
    }
}

/* ===================================
   MESTZAKKEN SECTIE
   =================================== */
.mestzakken-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, var(--color-dark) 0%, rgba(22, 33, 62, 0.5) 100%);
}

.mestzak-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.mestzak-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.mestzak-gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform var(--transition-medium);
}

.mestzak-gallery img:first-child {
    grid-column: span 2;
    height: 280px;
}

.mestzak-gallery img:hover {
    transform: scale(1.03);
}

.mestzak-info h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--color-light);
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.mestzak-description {
    color: var(--color-steel);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.mestzak-specs {
    list-style: none;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.mestzak-specs li {
    color: var(--color-light);
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.95rem;
}

.mestzak-specs li:last-child {
    border-bottom: none;
}

.mestzak-specs strong {
    color: var(--color-accent);
}

.mestzak-note {
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(74, 144, 217, 0.1);
    border-radius: 8px;
    text-align: center;
}

@media (max-width: 768px) {
    .mestzak-showcase {
        grid-template-columns: 1fr;
    }
    
    .mestzak-gallery img:first-child {
        height: 200px;
    }
}