/* ==========================================================================
   Basis Reset & Moderne Typografie
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   Gecentreerde Layout & Header
   ========================================================================== */
.text-center { text-align: center; }

header {
    background-color: #fff;
    padding: 1.5rem 0;
    border-bottom: 4px solid #1d8ad2;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

nav { margin-top: 20px; }

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav ul li a {
    text-decoration: none;
    color: #555;
    font-weight: 600;
    transition: color 0.3s ease;
}

nav ul li a:hover, nav ul li a.active { color: #1d8ad2; }

/* ==========================================================================
   Hero Sectie (Volledig Gecentreerd)
   ========================================================================== */
.hero-full-center {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 60vh;
    color: #fff;
    background-size: cover !important;
    background-position: center !important;
    border-radius: 12px;
    margin: 40px auto;
    width: 95%;
}

#hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

#hero p {
    font-size: 1.4rem;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

/* ==========================================================================
   Content Secties & Boek Highlight
   ========================================================================== */
.page-section {
    background-color: #fff;
    padding: 60px 40px;
    margin: 30px auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.content-limit {
    max-width: 800px;
    margin: 0 auto;
}

.main-book-cover {
    max-width: 350px;
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
    display: block;
    margin: 0 auto 40px;
}

.text-blue { color: #1d8ad2; }

.centered-list {
    display: inline-block;
    text-align: left;
    margin: 30px auto;
    padding: 0;
    list-style: none;
}

.centered-list li { margin-bottom: 15px; font-size: 1.1rem; }

/* ==========================================================================
   Quotes & Dividers
   ========================================================================== */
.quote-divider {
    background-color: #1d8ad2;
    color: white;
    padding: 80px 0;
    text-align: center;
}

.large-quote {
    font-size: 2rem;
    font-style: italic;
    border: none;
    max-width: 900px;
    margin: 0 auto;
}

.quote-author { margin-top: 20px; font-weight: bold; }

/* ==========================================================================
   Knoppen & Footer
   ========================================================================== */
.btn-primary {
    display: inline-block;
    background-color: #fff;
    color: #1d8ad2;
    padding: 15px 40px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    text-decoration: none;
}

.main-cta {
    background-color: #fff;
    color: #1d8ad2;
    font-size: 1.3rem;
}

.highlight-box {
    background-color: #f8f9fa;
    border: 3px solid #1d8ad2;
    padding: 80px 40px;
    border-radius: 20px;
}

.sub-text { margin-top: 20px; font-size: 0.85rem; opacity: 0.8; }

footer {
    background-color: #333;
    color: #fff;
    padding: 2rem 0;
    margin-top: 50px;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    #hero h1 { font-size: 2rem; }
    .large-quote { font-size: 1.5rem; }
    nav ul { gap: 10px; font-size: 0.9rem; }
}
/* Preview Box Styling */
.preview-box {
    margin-top: 40px;
    padding: 30px;
    background-color: #f0f7ff; /* Zeer lichtblauw voor subtiel contrast */
    border-radius: 12px;
    border: 1px solid #d0e7ff;
}

.preview-box h3 {
    color: #1d8ad2; /* Bell Rock Blauw */
    margin-bottom: 10px;
}

.preview-box p {
    margin-bottom: 20px;
    font-size: 1rem;
}

/* De knop binnen de preview box */
.preview-box .btn-secondary {
    padding: 10px 25px;
    font-size: 1rem;
    background-color: transparent;
    transition: all 0.3s ease;
}

.preview-box .btn-secondary:hover {
    background-color: #1d8ad2;
    color: #fff;
    transform: scale(1.05);
}