/* --- Homepagina: Interactieve Hero Sectie --- */
.interactive-hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    color: #fff;
    padding: 100px 0; /* Zorgt voor flexibele hoogte */
    background-color: var(--primary-color); /* FIX: De donkerblauwe achtergrond */
}

.hero-layer {
    position: absolute;
    top: -5%; left: -5%;
    width: 110%;
    height: 110%;
    background-size: cover;
    background-position: center;
    will-change: transform; /* Performance optimalisatie */
}

#hero-bg-layer {
    filter: brightness(0.7);
}

#hero-vignette-layer {
    background: radial-gradient(ellipse at center, rgba(0,0,0,0) 50%, rgba(0,0,0,0.7) 100%);
}

#hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

/* Geavanceerde Tekst Animaties */
.animated-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: #FFFFFF; /* Expliciet wit maken */
    /* FIX: Robuuste schaduw voor maximaal contrast en leesbaarheid */
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.8), 0 0 2px rgba(0,0,0,1);
}
.animated-title span {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    animation: reveal-letter 1.5s cubic-bezier(0.2, 1, 0.3, 1) forwards;
}
@keyframes reveal-letter {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.animated-subtitle {
    opacity: 0;
    transform: translateY(20px);
    animation: fade-in-up 1s ease-out 1s forwards;
    color: #FFFFFF; /* Expliciet wit maken */
    /* FIX: Sterkere, meer verspreide schaduw voor leesbaarheid */
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9);
    max-width: 650px;
    margin: 0 auto 30px;
    font-size: 1.2rem;
    line-height: 1.6;
}
@keyframes fade-in-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.pulsating-cta {
    opacity: 0;
    transform: translateY(20px);
    animation: fade-in-up 1s ease-out 1.5s forwards, pulse 2.5s infinite 2s;
}

/* --- De rest van de stijlen (Diagram, Voordelen, etc.) --- */

/* Pulserende CTA knop */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 4px 15px rgba(0,0,0,0.15); }
    50% { transform: scale(1.05); box-shadow: 0 6px 25px rgba(255, 107, 0, 0.4); }
    100% { transform: scale(1); box-shadow: 0 4px 15px rgba(0,0,0,0.15); }
}

/* Interactief Spier Diagram */
.interactive-muscle-diagram { position: relative; max-width: 500px; margin: 20px auto 40px; padding-top: 56.25%; }
.base-diagram { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: contain; transition: filter 0.5s ease; }
.muscle-hotspot { position: absolute; transform: translate(-50%, -50%); width: 30px; height: 30px; cursor: pointer; }
.hotspot-pulse { width: 100%; height: 100%; background-color: var(--secondary-color); border-radius: 50%; animation: hotspot-pulse 1.5s infinite; }
@keyframes hotspot-pulse { 0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 107, 0, 0.7); } 70% { transform: scale(1.2); box-shadow: 0 0 0 20px rgba(255, 107, 0, 0); } 100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(255, 107, 0, 0); } }
.diagram-text-box { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); background: #fff; padding: 15px 20px; border-radius: var(--border-radius); box-shadow: 0 5px 20px rgba(0,0,0,0.1); width: 90%; text-align: center; opacity: 1; transition: opacity 0.4s ease; }
.diagram-text-box h4 { margin: 0 0 5px 0; font-size: 1rem; }
.diagram-text-box p { margin: 0; font-size: 0.9rem; }
.benefits-section { background-color: #fff; }
.benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.benefit-card { background: var(--background-color); padding: 30px; border-radius: var(--border-radius); text-align: center; border: 1px solid #e9ecef; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; opacity: 0; transform: translateY(40px); }
.benefit-card.in-view-card { opacity: 1; transform: translateY(0); }
.benefit-card:nth-child(2) { transition-delay: 0.1s; }
.benefit-card:nth-child(3) { transition-delay: 0.2s; }
.benefit-card:hover { transform: translateY(-10px); box-shadow: 0 10px 30px rgba(0,0,0,0.1); border-color: var(--secondary-color); }
.benefit-icon { font-size: 3rem; line-height: 1; margin-bottom: 15px; transition: transform 0.4s ease; }
.benefit-card:hover .benefit-icon { transform: scale(1.2) rotate(10deg); }

/* --- NIEUW: Interactieve Scroll-Sectie --- */
.interactive-explanation-section {
    background-color: #fff;
    padding: 80px 0;
    /* FIX: Voorkomt overlap met de hero sectie */
    position: relative;
    z-index: 5;
}

.interactive-explanation-grid {
    display: grid;
    grid-template-columns: 1fr; /* Standaard voor mobiel */
    gap: 40px;
    align-items: flex-start;
}

.interactive-muscle-diagram-wrapper {
    position: sticky;
    top: 150px;
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
    /* FIX: Zorgt ervoor dat de sticky-kolom bovenaan de grid begint */
    align-self: flex-start; 
    transition: transform 0.5s ease-in-out, filter 0.5s ease-in-out;
    aspect-ratio: 1 / 1;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Animaties per stap, nu gecombineerd met de translateY transformatie */
.interactive-muscle-diagram-wrapper.step-1-active { 
    transform: scale(1.05); 
}
.interactive-muscle-diagram-wrapper.step-2-active .base-diagram { 
    filter: saturate(1.5) brightness(1.1); 
}
.interactive-muscle-diagram-wrapper.step-2-active {
    transform: scale(1); /* Zorg dat schaal reset */
}
.interactive-muscle-diagram-wrapper.step-3-active { 
    transform: scale(1.1); 
}
.interactive-muscle-diagram-wrapper.step-3-active .base-diagram { 
    filter: brightness(1.2); 
}

.diagram-steps-column {
    display: flex;
    flex-direction: column;
    gap: 100px; /* Ruimte tussen de stappen voor scroll-effect */
}

.diagram-step {
    padding: 20px;
    border-radius: var(--border-radius);
    background: var(--background-color);
    border-left: 4px solid #e9ecef;
    opacity: 0.4;
    transition: opacity 0.4s ease, border-color 0.4s ease, transform 0.4s ease;
}

.diagram-step.is-active {
    opacity: 1;
    border-color: var(--secondary-color);
    transform: scale(1.03);
}

.diagram-step h3 {
    margin-top: 0;
    color: var(--primary-color);
}

/* Responsive layout voor desktop */
@media (min-width: 992px) {
    .interactive-explanation-grid {
        grid-template-columns: 1fr 1fr; /* Twee kolommen op desktop */
        gap: 80px;
    }
    .sticky-diagram-container {
        height: auto; /* Hoogte wordt bepaald door de content ernaast */
    }
}

/* --- NIEUW: Interactieve Voordelen Sectie --- */
.interactive-benefits-section {
    padding: 80px 0;
    background-color: var(--background-color);
}

.benefits-interactive-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.benefits-triggers {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.benefit-trigger {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: #fff;
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 5px solid #e9ecef;
}

.benefit-trigger:hover {
    transform: translateX(10px);
    border-color: var(--secondary-color);
}

.benefit-trigger.is-active {
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.07);
    transform: translateX(10px) scale(1.02);
}

.trigger-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-right: 20px;
    transition: transform 0.4s ease, color 0.4s ease;
}
.trigger-icon svg { width: 40px; height: 40px; }
.benefit-trigger.is-active .trigger-icon {
    color: var(--secondary-color);
    transform: rotate(-15deg) scale(1.1);
}

.trigger-text h3 {
    margin: 0 0 5px 0;
    font-size: 1.25rem;
}
.trigger-text p {
    margin: 0;
    color: #6c757d;
}

.benefits-content-panes {
    position: relative;
    min-height: 200px; /* Zorgt voor ruimte en voorkomt 'springen' */
}

.benefit-pane {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.benefit-pane.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.benefit-pane h4 {
    color: var(--secondary-color);
}
.benefit-pane p {
    font-size: 1.1rem;
    line-height: 1.8;
}

@media (min-width: 992px) {
    .benefits-interactive-container {
        grid-template-columns: 1fr 1fr;
        gap: 80px;
    }
}