/* --- BASIS INSTELLINGEN & KLEUREN --- */
:root {
    --primary-blue: #3498db;
    --text-color: #2c3e50;
    --white: #ffffff;
    --bg-color: #f7fbfe;
    --nav-height: 80px;
    --font-main: 'Outfit', sans-serif;
}

[data-theme="dark"] {
    --text-color: #ecf0f1;
    --white: #1a1a1a;
    --bg-color: #0f172a;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-main);
    background: var(--bg-color);
    color: var(--text-color);
    padding-top: var(--nav-height);
    transition: background 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
    line-height: 1.6;
}

/* --- STABIELE ACHTERGROND DECORATIE --- */
.fixed-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Zichtbaar grid in lichte modus */
.grid-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--primary-blue) 0.8px, transparent 0.8px);
    background-size: 50px 50px;
    opacity: 0.15;
}

/* Blauwe gloed (blobs) diepte geven */
.blob-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 15% 15%, rgba(52, 152, 219, 0.25), transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(52, 152, 219, 0.25), transparent 45%);
    filter: blur(70px);
}

[data-theme="dark"] .grid-layer { opacity: 0.05; }
[data-theme="dark"] .blob-layer { opacity: 0.4; }

/* --- NAVIGATIE --- */
nav {
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 3000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

[data-theme="dark"] nav {
    background: rgba(15, 23, 42, 0.85);
    border-bottom-color: rgba(255,255,255,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10%;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span { color: var(--text-color); font-weight: 300; }

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li { margin-left: 2.5rem; }

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 400;
    font-size: 0.95rem;
    transition: 0.3s;
}

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

/* --- HERO / HOMESCHERM --- */
header {
    height: 75vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 850px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 4.2rem);
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    font-weight: 600;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 45px;
    opacity: 0.85;
    max-width: 650px;
    font-weight: 300;
}

/* --- SECTIE TITELS --- */
.section-header {
    text-align: center;
    margin: 110px 0 55px;
    width: 100%;
}

.section-header h2 {
    font-size: 2.8rem;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

/* --- 3D VIEWER --- */
.viewer-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.viewer-container {
    flex: 1;
    height: 500px;
    background: var(--white);
    border-radius: 35px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.06);
    border: 1px solid rgba(52,152,219,0.12);
}

model-viewer { width: 100%; height: 100%; }

.nav-btn {
    background: var(--white);
    border: none;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--primary-blue);
    font-size: 1.4rem;
    margin: 0 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.3s;
}

.nav-btn:hover { transform: scale(1.1); background: var(--primary-blue); color: white; }

/* --- PRODUCTEN GRID --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
    padding: 0 10% 100px;
}

.product-card {
    background: var(--white);
    padding: 35px;
    border-radius: 35px;
    text-align: center;
    box-shadow: 0 12px 35px rgba(0,0,0,0.03);
    border: 1px solid rgba(52,152,219,0.08);
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.product-card:hover { transform: translateY(-12px); border-color: var(--primary-blue); }

.product-img-container {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 22px;
    overflow: hidden;
    margin-bottom: 25px;
    background: #f0f4f8;
}

.product-img { width: 100%; height: 100%; object-fit: cover; }

.price {
    display: block;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 25px;
    font-size: 1.35rem;
}

/* --- INSTAGRAM SECTIE --- */
.insta-badge { display: flex; justify-content: center; margin-bottom: 20px; }

.insta-badge i {
    font-size: 4.5rem;
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.insta-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 950px;
    margin: 0 auto 45px;
    padding: 0 20px;
}

.insta-pic { aspect-ratio: 1; border-radius: 22px; overflow: hidden; box-shadow: 0 12px 25px rgba(0,0,0,0.07); }
.insta-pic img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s ease; }
.insta-pic:hover img { transform: scale(1.1); }

/* --- KNOOP STYLING --- */
.btn {
    padding: 18px 42px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    border: none;
    cursor: pointer;
    transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
    letter-spacing: 0.3px;
}

.btn.primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 0 10px 25px rgba(52, 152, 219, 0.3);
}

.btn.primary:hover { transform: translateY(-3px); box-shadow: 0 15px 35px rgba(52, 152, 219, 0.4); }

.btn.insta-btn {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: white;
}

.center-btn { text-align: center; margin-bottom: 100px; }

/* --- SPLASH SCREEN --- */
#splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

#splash-screen.fade-out { opacity: 0; visibility: hidden; transform: scale(1.08); }

.splash-content { text-align: center; }

.splash-logo {
    font-size: clamp(3.5rem, 10vw, 5.5rem);
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.splash-logo span { color: var(--text-color); font-weight: 300; }

.splash-tagline {
    font-size: 0.85rem;
    letter-spacing: 7px;
    opacity: 0.5;
    margin-bottom: 45px;
    text-transform: uppercase;
}

/* --- EXTRA ELEMENTEN --- */
.mail-float {
    position: fixed;
    width: 65px;
    height: 65px;
    bottom: 35px;
    right: 35px;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 4000;
    font-size: 26px;
    text-decoration: none;
    box-shadow: 0 12px 30px rgba(52, 152, 219, 0.35);
    transition: 0.3s;
}

.mail-float:hover { transform: scale(1.1) rotate(-10deg); }

.theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    transition: 0.3s;
}

.theme-btn:hover { transform: rotate(20deg); color: var(--primary-blue); }

.moon-icon { display: none; }
[data-theme="dark"] .moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: none; }

/* --- RESPONSIVENESS --- */
@media (max-width: 992px) {
    .nav-container { padding: 0 5%; }
    .product-grid { padding: 0 5% 80px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; } /* Burger menu logica nog nodig voor mobiel indien gewenst */
    .hero-content h1 { font-size: 2.8rem; }
    .section-header h2 { font-size: 2.2rem; }
    .viewer-container { height: 400px; }
    .insta-preview-grid { grid-template-columns: repeat(2, 1fr); }
    .insta-pic:last-child { display: none; }
    .nav-btn { margin: 0 10px; width: 45px; height: 45px; }
}

/* --- OVER MIJ SECTIE VERFIJNING --- */
#about {
    padding: 100px 10%;
    background: rgba(52, 152, 219, 0.05); /* Iets meer kleur voor de ingenieurs-look */
    border-radius: 40px;
    margin: 80px 5%;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.about-wrapper {
    display: flex;
    align-items: center;
    gap: 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    display: block;
    margin: 0 auto;
}

.about-text {
    flex: 1.5;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.15rem;
    line-height: 1.8;
}

@media (max-width: 992px) {
    #about { margin: 40px 20px; padding: 60px 20px; }
    .about-wrapper { flex-direction: column; text-align: center; }
    .about-text .section-header { text-align: center !important; }
}

/* --- SKILLS TAGS --- */
.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 25px 0 35px;
}

.skills-tags span {
    background: rgba(52, 152, 219, 0.1);
    color: var(--primary-blue);
    padding: 8px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(52, 152, 219, 0.2);
}

.skills-tags i {
    font-size: 0.8rem;
}

/* Aanpassing splash-screen tekst */
.splash-tagline {
    font-size: 0.85rem;
    letter-spacing: 5px;
    opacity: 0.6;
    margin-bottom: 40px;
    text-transform: uppercase;
}