:root {
    --bg-color: #000000;
    --text-main: #ffffff;
    --text-muted: #9ca3af;
    --accent-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.15);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Navigatie */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: 80px;
    padding: 0 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

.logo img {
    height: 60px;
    width: auto;
    display: block;
    transition: transform 0.3s ease;
}

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

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color 0.3s, transform 0.3s;
}

.nav-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Slider */
.slider-wrapper {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

.slider {
    display: flex;
    height: 100vh;
    width: fit-content;
    transition: transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

.slider > div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    background-size: cover;
    background-position: center;
    position: relative;
    text-align: center;
    padding: 20px;
}

.slider > div::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.4) 0%, rgba(0,0,0,1) 100%);
    z-index: 1;
}

.slider h1, .slider p {
    position: relative;
    z-index: 2;
}

.slider h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.slider p {
    font-size: 1.2rem;
    max-width: 600px;
    color: var(--text-muted);
}

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    cursor: pointer;
    z-index: 10;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 20px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

#btn-links { left: 30px; }
#btn-rechts { right: 30px; }

/* Secties */
.section-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 100px 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 50px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 400px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    position: relative;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
    border-left: 1px solid var(--glass-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 5px;
    width: 10px;
    height: 10px;
    background-color: var(--bg-color);
    border: 2px solid var(--accent-color);
    transform: rotate(45deg);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 5px;
}

/* Contact Styling */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.contact-info a {
    color: var(--text-main);
    text-decoration: none;
    border-bottom: 1px solid var(--glass-border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input, .contact-form textarea {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 15px;
    color: white;
    font-family: inherit;
}

.submit-btn {
    background: white;
    color: black;
    border: none;
    padding: 15px;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    transition: 0.3s;
}

.submit-btn:hover { background: var(--text-muted); }

/* Animaties */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease-out;
}

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

footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .about-grid, .contact-wrapper { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    nav { justify-content: center; }
}