/* Reset en basis styling - met scrollbar verbergen */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

*::-webkit-scrollbar {
    display: none;
    width: 0px;
    background: transparent;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    scroll-behavior: smooth;
    overflow-x: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

body::-webkit-scrollbar {
    display: none;
    width: 0px;
    background: transparent;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
    width: 0px;
    background: transparent;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero sectie */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-content {
    z-index: 2;
}

.profile-image {
    margin-bottom: 2rem;
}

.avatar-circle {
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 4px solid rgba(255, 255, 255, 0.3);
}

.avatar-circle i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* Navigatie */
.main-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
}

.main-nav a:hover,
.main-nav a.active {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

/* Secties */
.section {
    padding: 5rem 0;
}

.section-alt {
    background: #f8f9fa;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.section-title.animate {
    opacity: 1;
    transform: translateY(0);
}

.section-title::after {
    content: '';
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: block;
    margin: 1rem auto;
    border-radius: 2px;
}

/* Profiel sectie */
.profile-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.profile-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #555;
}

/* Timeline voor opleiding */
.education-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 4px #667eea;
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -12px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -12px;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
}

.timeline-content h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.timeline-subtitle {
    color: #666;
    font-style: italic;
    margin-bottom: 1rem;
}

.course-details h4 {
    margin: 1rem 0 0.5rem 0;
    color: #333;
}

.course-details ul {
    list-style-position: inside;
    color: #555;
}

.current .timeline-content {
    border-left: 4px solid #667eea;
}

/* Werkervaring */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.experience-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s ease;
}

.experience-card:hover::before {
    left: 100%;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.experience-header h3 {
    color: #667eea;
    font-size: 1.3rem;
    flex: 1;
}

.experience-period {
    background: #667eea;
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

.experience-task {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.experience-description {
    color: #555;
    line-height: 1.6;
}

/* Vaardigheden */
.skills-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    grid-template-rows: auto auto;
    gap: 2rem;
    grid-template-areas: 
        "ict personal"
        "tools .";
}

.skills-category:nth-child(1) {
    grid-area: ict;
}

.skills-category:nth-child(2) {
    grid-area: personal;
}

.skills-category:nth-child(3) {
    grid-area: tools;
    max-width: 500px;
}

.skills-category {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    min-height: auto;
}

.skills-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s ease;
}

.skills-category:hover::before {
    left: 100%;
}

.skills-category h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-item {
    position: relative;
    margin-bottom: 1rem;
}

.skill-item::after {
    content: attr(data-level);
    position: absolute;
    right: 0;
    top: -30px;
    background: #333;
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.skill-item:hover::after {
    opacity: 1;
}

.skill-name {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: #333;
    font-size: 0.95rem;
}

.skill-bar {
    height: 6px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
    transition: width 1.5s ease;
    width: 0%;
    position: relative;
    overflow: hidden;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shimmer 2s infinite;
}

.skill-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.6rem 1rem;
    border-radius: 18px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
    margin: 0.2rem;
}

.skill-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(102, 126, 234, 0.3);
}

.soft-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: flex-start;
    align-items: center;
}

/* Tools & Technologieën */
.tools-skills {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    max-width: 100%;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.8rem;
    background: #f8f9fa;
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    min-height: 50px;
}

.tool-item:hover {
    border-color: #667eea;
    background: #fff;
    transform: translateY(-2px);
}

.tool-item i {
    font-size: 1.3rem;
    color: #667eea;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.tool-item span {
    font-weight: 500;
    color: #333;
    font-size: 0.85rem;
}

/* Hobby's */
.hobbys-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.hobby-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.hobby-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.5s ease;
}

.hobby-card:hover::before {
    left: 100%;
}

.hobby-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.hobby-card i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.hobby-card h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.hobby-card p {
    color: #555;
    line-height: 1.6;
}

/* Contact sectie */
.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-info h3 {
    color: #667eea;
    margin-bottom: 2rem;
    font-size: 1.4rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #333;
}

.contact-item i {
    color: #667eea;
    width: 20px;
}

.contact-item a {
    color: #0077b5; 
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #005885;
    text-decoration: underline;
}

.fab.fa-linkedin {
    color: #0077b5;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    color: #667eea;
    margin-bottom: 2rem;
    font-size: 1.4rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Form status messages */
#form-status {
    margin-top: 1rem;
}

.success-message {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    animation: slideInMessage 0.3s ease;
    border-left: 4px solid #2E7D32;
}

.error-message {
    background: linear-gradient(135deg, #f44336 0%, #d32f2f 100%);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    animation: slideInMessage 0.3s ease;
    border-left: 4px solid #C62828;
}

@keyframes slideInMessage {
    from { 
        opacity: 0; 
        transform: translateY(-10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.btn-primary:disabled::after {
    content: '';
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid transparent;
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.typing-animation {
    border-right: 2px solid rgba(255, 255, 255, 0.8);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { border-color: rgba(255, 255, 255, 0.8); }
    51%, 100% { border-color: transparent; }
}

/* Footer */
.site-footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #667eea;
}

/* Particle background */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particles::before,
.particles::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.particles::before {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.particles::after {
    top: 60%;
    right: 20%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}