/* from 4.html */

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

/* --- THEMA VARIABELEN --- */
:root {
    --primary: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.05);
    --gradient-main: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-hover: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #db2777 100%);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-light: #94a3b8;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.2);
}

/* --- BASIS STIJLEN --- */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary); /* OPGELOST: Gebruikt nu correct de thema-variabel */
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
}

[data-theme="dark"] a {
    color: var(--primary-light);
}

/* --- GEANIMEERDE ACHTERGROND --- */
.animated-background {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.gradient-mesh {
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 25% 75%, rgba(59,130,246,.08) 0%, transparent 60%),
        radial-gradient(circle at 75% 25%, rgba(139,92,246,.08) 0%, transparent 60%),
        radial-gradient(circle at 45% 45%, rgba(236,72,153,.06) 0%, transparent 60%),
        radial-gradient(circle at 65% 75%, rgba(16,185,129,.06) 0%, transparent 60%);
    animation: meshMove 30s ease-in-out infinite;
    will-change: background;
}

[data-theme="dark"] .gradient-mesh {
    background:
        radial-gradient(circle at 25% 75%, rgba(59,130,246,.12) 0%, transparent 60%),
        radial-gradient(circle at 75% 25%, rgba(139,92,246,.12) 0%, transparent 60%),
        radial-gradient(circle at 45% 45%, rgba(236,72,153,.10) 0%, transparent 60%),
        radial-gradient(circle at 65% 75%, rgba(16,185,129,.10) 0%, transparent 60%);
}

@keyframes meshMove {
    0%,100% { background-position: 0% 0%, 100% 100%, 50% 50%, 75% 75%; }
    25% { background-position: 100% 100%, 0% 0%, 75% 75%, 50% 50%; }
    50% { background-position: 75% 75%, 50% 50%, 100% 100%, 0% 0%; }
    75% { background-position: 50% 50%, 75% 75%, 0% 0%, 100% 100%; }
}

/* --- BEVER ANIMATIES --- */
.beaver {
    position: fixed;
    font-size: clamp(28px, 3.2vw, 48px);
    filter: drop-shadow(0 4px 10px rgba(0,0,0,.12));
    opacity: .9;
    z-index: 9999;
    pointer-events: none;
    animation: float 12s ease-in-out infinite;
    will-change: transform, opacity;
}

.beaver-particle {
    position: absolute;
    font-size: 18px;
    opacity: .65;
    animation: particleFloat 20s linear infinite;
    will-change: transform, opacity;
}

@keyframes float {
    0%   { transform: translateY(100vh) translateX(0) rotate(0deg) scale(1); opacity: 0; }
    10%  { opacity: .9; }
    90%  { opacity: .9; }
    100% { transform: translateY(-20vh) translateX(20px) rotate(360deg) scale(1.05); opacity: 0; }
}

@keyframes particleFloat {
    0%   { opacity: 0; transform: translateY(100vh) translateX(0) rotate(0deg); }
    5%   { opacity: 1; }
    50%  { opacity: .9; transform: translateY(50vh) translateX(20px) rotate(180deg); }
    95%  { opacity: 1; }
    100% { opacity: 0; transform: translateY(-10vh) translateX(-20px) rotate(360deg); }
}

/* --- NAVIGATIEBALK --- */
.navbar {
    position: fixed; /* OPGELOST: Dit is de correcte positionering, de conflicterende 'relative' is verwijderd. */
    top: 0;
    width: 100%;
    background: rgba(255,255,255,.95);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    z-index: 1000;
    backdrop-filter: blur(15px);
    transition: all .3s ease;
}

[data-theme="dark"] .navbar { 
    background: rgba(15,23,42,.95); 
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.nav-center {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-center a {
    color: var(--text-primary);
    font-weight: 500;
    transition: all .3s;
    position: relative;
}

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

.nav-center a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width .3s;
}

.nav-center a:hover::after { width: 100%; }

.nav-right {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.dashboard-btn {
    background: var(--gradient-main);
    color: #fff;
    padding: .75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: .95rem;
    transition: all .3s;
    box-shadow: 0 4px 12px rgba(59,130,246,.3);
    display: flex;
    align-items: center;
    gap: .5rem;
    position: relative;
    overflow: hidden;
}

.dashboard-btn:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59,130,246,.4);
}

.dashboard-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.2), transparent);
    transition: left .5s;
}

.dashboard-btn:hover::before { left: 100%; }

/* OPGELOST: Alle theme-toggle stijlen zijn hier samengevoegd en de duplicaten zijn verwijderd. */
.theme-toggle {
    position: relative;
    width: 65px;
    height: 32px;
    background: var(--gradient-main);
    border-radius: 32px;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 12px rgba(59,130,246,.3);
    transition: all .3s;
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(59,130,246,.4);
}

.theme-toggle-slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 26px;
    height: 26px;
    background: #fff;
    border-radius: 50%;
    transition: transform .3s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

[data-theme="dark"] .theme-toggle-slider {
    transform: translateX(33px);
}


/* --- HERO SECTIE --- */
.hero {
    margin-top: 70px;
    padding: 6rem 2rem;
    background: var(--gradient-main);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 12px rgba(0,0,0,.2);
    animation: slideInDown .8s ease;
}

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

.hero p {
    font-size: 1.25rem;
    color: rgba(255,255,255,.95);
    max-width: 700px;
    margin: 0 auto 2rem;
    animation: slideInUp .8s ease .2s both;
    line-height: 1.7;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: slideInUp .8s ease .4s both;
}

.btn {
    padding: .875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    transition: all .3s;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,0,0,.15);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,.2);
}

.btn-secondary {
    background: rgba(255,255,255,.15);
    color: #fff;
    border-color: rgba(255,255,255,.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,.25);
    border-color: rgba(255,255,255,.5);
    transform: translateY(-2px);
}

/* --- SECTIES (Features, API, FAQ) --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.features, .api-section, .faq {
    padding: 5rem 2rem;
}
.features, .faq { background: var(--bg-secondary); }
.api-section { background: var(--bg-primary); }

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 1px 3px var(--shadow);
    transition: all .3s;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform .3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px var(--shadow);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-main);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(59,130,246,.2);
    /* TOEGEVOEGD: Essentiële fallback om emoji's correct weer te geven op alle apparaten. */
    font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: .5rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* API Section */
.api-intro {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.api-intro h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.api-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    padding: 1.5rem;
    border-radius: 12px;
    transition: all .3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.api-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-main);
    opacity: 0;
    transition: opacity .3s;
}

.api-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 8px 20px var(--shadow);
}

.api-card:hover::before { opacity: .05; }

.api-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: .5rem;
    position: relative;
    z-index: 1;
}

.api-description {
    font-size: .875rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

/* FAQ Section */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: 12px;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all .3s;
}

.faq-item:hover { box-shadow: 0 4px 12px var(--shadow); }

.faq-question {
    padding: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    transition: all .3s;
}

.faq-question:hover {
    color: var(--primary);
    background: var(--bg-secondary);
}

.faq-arrow {
    transition: transform .3s;
    color: var(--primary);
}

.faq-item.active .faq-arrow { transform: rotate(180deg); }

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s, padding .3s;
    color: var(--text-secondary);
    padding: 0 1.5rem;
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 800px;
    padding: 0 1.5rem 1.5rem;
}

/* --- FOOTER --- */
.footer {
    padding: 3rem 2rem;
    background: var(--bg-card);
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

/* --- MEDIA QUERIES --- */
@media (max-width: 768px) {
    .nav-center { display: none; }
    .nav-right { gap: .5rem; }
    .dashboard-btn { padding: .625rem 1.25rem; font-size: .9rem; }
    .features-grid, .api-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
    .beaver { opacity: .75; }
    .beaver-particle { display: none; }
}

/* VERWIJDERD: De conflicterende en ongebruikte stijlen die hier stonden zijn weggehaald. */