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

:root {
    --primary: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary: #06b6d4;
    --accent: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: rgba(255, 255, 255, 0.95);
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --border: #e5e7eb;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --glow: 0 0 20px rgb(59 130 246 / 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: rgba(255, 255, 255, 0.95);
    --surface: #1f2937;
    --surface-alt: #374151;
    --border: #4b5563;
    --bg-gradient: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
    --gradient-primary: linear-gradient(135deg, #4338ca 0%, #581c87 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-gradient);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Control Panel */
.control-panel {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1001;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.control-button {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .control-button {
    background: rgba(31, 41, 55, 0.95);
    border-color: rgba(75, 85, 99, 0.3);
}

.control-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.lang-toggle {
    padding: 0 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    width: auto;
    min-width: 48px;
    text-decoration: none;
}


.nl{
    text-decoration: none;
}

.theme-toggle i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.theme-toggle:hover i {
    transform: scale(1.1);
}

/* Animated background particles */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

[data-theme="dark"] .particle {
    background: rgba(255, 255, 255, 0.05);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.4;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.8;
    }
}

/* Layout */
.container {
    display: flex;
    min-height: 100vh;
}

/* Enhanced Sidebar */
.sidebar {
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-xl);
    transition: background 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .sidebar {
    background: rgba(31, 41, 55, 0.95);
    border-right-color: rgba(75, 85, 99, 0.3);
}

.profile-section {
    text-align: center;
    margin-bottom: 2rem;
}
.profile-img {
    width: 120px;              /* cirkelgrootte */
    height: 120px;
    border-radius: 50%;        /* maakt het rond */
    margin: 0 auto 1rem;       /* centreren */
    border: 4px solid var(--primary);
    box-shadow: var(--shadow-lg), var(--glow);
    overflow: hidden;          /* knipt alles buiten de cirkel af */
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary); /* optioneel, als achtergrondkleur */
}

.profile-img img {
    width: 50rem;
    height: 100%;
    object-fit: cover;         /* vult de cirkel netjes */
    border-radius: 50%;        /* extra zekerheid */
    display: block;
}


.profile-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 30px rgb(59 130 246 / 0.3);
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.profile-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

/* Navigation */
.nav-list {
    list-style: none;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    padding: 0.875rem 1.25rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.1;
    transition: all 0.3s ease;
    z-index: -1;
}

.nav-item:hover::before,
.nav-item.active::before {
    left: 0;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary);
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.nav-item i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

/* Contact Section */
.contact-section {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.contact-link {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.contact-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

/* Main Content */
.main-content {
    margin-left: 300px;
    flex: 1;
}

section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 2rem;
    position: relative;
}

/* Home Section - Enhanced visibility */
.home {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.5) 100%);
    text-align: center;
    position: relative;
}

[data-theme="dark"] .home {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.7) 100%);
}

.home::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    font-weight: 400;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 700px;
    margin: 0 auto 3rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    line-height: 1.7;
}

.highlight {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Typing animation styles */
.typing-line {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

.typing-text {
    opacity: 0;
    animation: typeIn 1.5s ease-out forwards;
}

.typing-text:nth-child(1) { animation-delay: 0.5s; }
.typing-text:nth-child(2) { animation-delay: 1.5s; }
.typing-text:nth-child(3) { animation-delay: 2.5s; }
.typing-text:nth-child(4) { animation-delay: 3.5s; }

@keyframes typeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    50% {
        opacity: 0.7;
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Keep typing animation permanent with cursor */
.typing-line::after {
    content: '|';
    display: inline-block;
    margin-left: 3px;
    animation: blink 1s infinite;
    color: #4facfe;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

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

.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid;
    position: relative;
    overflow: hidden;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: var(--primary-dark);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* About Section */
.about {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    transition: background 0.3s ease;
}

[data-theme="dark"] .about {
    background: rgba(31, 41, 55, 0.95);
}

.about-card {
    max-width: 800px;
    background: var(--surface);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    text-align: center;
    transition: 0.3s ease, border-color 0.3s ease;
}

.about-card h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: center;
    text-align: left;
    margin-bottom: 2rem;
}

.about-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: var(--shadow-lg), var(--glow);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.skills-section {
    text-align: center;
}

.skills-section h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.skill-card {
    padding: 1rem;
    background: var(--surface-alt);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    text-align: center;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

.skill-card i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

/* Projects Section */
.projects {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.1) 0%, rgba(0, 242, 254, 0.1) 100%);
    transition: background 0.3s ease;
}

[data-theme="dark"] .projects {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.5) 100%);
}

.projects-container {
    max-width: 1200px;
    width: 100%;
}

.projects h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(to right, #b2fefa, #0ed2f7); 
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--surface);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    overflow: hidden;
    position: relative;
    border-radius: 16px 16px 0 0;
}

.ProjectsImg, .ProjectsImgCord, .ProjectsImgBird {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: center;
    border-radius: 0;
    box-shadow: none;
    display: block;
}

.ProjectsImgpoke {
    width: 100%;
    height: 200px;
    object-fit: contain;
    object-position: center;
    padding: 1rem;
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--surface-alt);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.project-links {
    display: flex;
    gap: 0.5rem;
}

.project-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.project-link.primary:hover {
    background: var(--primary-dark);
}

.project-link.secondary {
    background: var(--surface-alt);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.project-link.secondary:hover {
    background: var(--border);
}

/* Scroll indicator */
.scroll-indicator {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: opacity 0.3s ease;
    z-index: 100;
}

.scroll-indicator span {
    font-size: 0.875rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.scroll-indicator i {
    animation: bounce 2s infinite;
}

/* ===========================
   CONTACT SECTION
   =========================== */
.contact {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: 4rem 2rem;
  text-align: center;
}

[data-theme="dark"] .contact {
  background: rgba(17, 24, 39, 0.95);
}

/* Container */
.contact-container {
  max-width: 700px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: 24px;
  padding: 3rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
}

/* Heading */
.contact-container h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Intro text */
.contact-intro {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: left;
}

/* Form group */
.form-group {
  display: flex;
  flex-direction: column;
}

/* Labels */
.form-group label {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--primary);
}

/* Inputs + Textarea */
.form-group input,
.form-group textarea {
  padding: 0.875rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-size: 1rem;
  font-family: inherit;
  resize: none;
  background: var(--surface-alt);
  color: var(--text-primary);
  transition: all 0.3s ease;
}

/* Placeholder text */
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.8;
}

/* Focus effect */
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
  background: var(--surface);
  color: var(--text-primary);
}

/* Button */
.contact-form .btn-primary {
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  color: white;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.contact-form .btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.35);
}


@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Mobile menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    background: var(--surface);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 250px;
    }
    .main-content {
        margin-left: 250px;
    }
}

@media (max-width: 768px) {
    .mobile-menu {
        display: flex;
    }
    
    .control-panel {
        top: 4rem;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1rem;
    }
    
    .about-avatar {
        width: 120px;
        height: 120px;
        font-size: 3rem;
        margin: 0 auto;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 2rem 1rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
}

/* Animation classes for scroll effects */
.animate-in {
    animation: slideInUp 0.6s ease-out forwards;
}

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