/* --- Root Variabelen --- */
:root {
    --color-background: #343A40;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #E9ECEF;
    --color-text-tertiary: #CED4DA;
    --color-accent: #0071e3;
    --color-accent-light: #3394ea;
    --color-border: #495057;
    --color-shadow: rgba(0, 0, 0, 0.25);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --line-height-body: 1.5;
    --line-height-heading: 1.2;
}

/* --- Algemene Instellingen --- */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: var(--font-family);
    line-height: var(--line-height-body);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    margin: 0;
    padding-bottom: 70px;
}

h1, h2, h3 {
    line-height: var(--line-height-heading);
    color: var(--color-text-primary);
    text-align: center;
    margin-top: 20px;
}

p {
    color: var(--color-text-secondary);
}

main {
    flex: 1;
}

/* --- Navigatie --- */
.month-nav {
     background-color: rgba(33, 37, 41, 0.9);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px); /* Modern glaseffect */
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.home-button {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: bold;
    padding: 4px 20px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: var(--color-border);
    transition: all 0.3s ease;
}

.home-button:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent-light);
    color: white;
}

.menu { 
	display: flex; 
	list-style: none; 
	margin: 0; 
	padding: 0; 
}

.menu li { margin-left: 10px; }

.menu a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.menu a:hover { background-color: var(--color-border); color: var(--color-text-primary); }
.menu a.active { background-color: var(--color-accent); color: var(--color-text-primary); }

.menu-toggle, .hamburger { display: none; }

/* --- Galerij Grid (Aangepast) --- */
.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 4 kolommen */
    gap: 20px;
    padding: 20px;
    max-width: 1600px;
    margin: 40px auto;
    align-items: start;
}

/* --- Groot Tekstvak --- */
.intro-box {
    grid-column: span 2; /* Beslaat 2 kolommen */
    grid-row: span 3;
	background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

.intro-box h1 { text-align: Center; margin-top: 0; color: var(--color-accent-light); }
.intro-box p { color: var(--color-text-secondary); font-size: 1.0rem; }

.gallery img {
    width: 100%;
    height: auto;
    display: block;
    cursor: pointer;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 10px var(--color-shadow);
	margin-bottom: 20px;
}

.gallery img:hover { 
    transform: scale(1.03); 
    box-shadow: 0 10px 20px rgba(0,0,0,0.4);
    border-color: var(--color-accent-light);
}

/* --- Responsiviteit --- */
@media (max-width: 1200px) { .gallery { grid-template-columns: repeat(3, 1fr); } }

@media (max-width: 950px) {
    .gallery { grid-template-columns: repeat(2, 1fr); }
    .hamburger { display: block; cursor: pointer; }
    .hamburger span { 
		        display: block; width: 25px; height: 3px;
        background-color: var(--color-text-primary); 
        margin: 5px 0; transition: 0.4s;}
    .menu {
        display: none; position: absolute; top: 100%; left: 0; width: 100%;
        background: var(--color-background); flex-direction: column;text-align: center;
        border-bottom: 1px solid var(--color-border);
    }
    .menu-toggle:checked ~ .menu { display: flex; }
    .menu li { margin: 0; border-top: 1px solid var(--color-border); }
    .menu a { display: block; padding: 15px; font-size: 1.1rem; border-radius: 0; }
    .intro-box { grid-column: span 2; }
	.home-button {
        font-size: 0.8rem;
        padding: 5px 10px;
    }
}

@media (max-width: 600px) {
    .gallery { grid-template-columns: 1fr; }
    .intro-box { grid-column: span 1; padding: 20px; }
}

/* --- Lightbox & Footer --- */
/* --- Lightbox --- */
.lightbox {
    display: none;
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000; justify-content: center; align-items: center;
}

.lightbox-content {
    background-color: var(--color-background);
    padding: 25px;
    border-radius: 16px;
   max-width: 90%;
    max-height: 90%;
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}

#full-image { 
    max-width: 100%; 
    max-height: 80vh; 
    display: block; 
    margin: 0 auto; 
    border-radius: 8px;
}

.info-box { 
    padding-top: 20px;
    color: var(--color-text-primary); 
}

.info-box h3 { text-align: left; margin: 0; color: var(--color-text-primary); font-size: 1.2rem; }
.info-box p { margin: 5px 0; color: var(--color-accent-light); font-weight: bold; text-align: left; }
.info-box small { color: var(--color-text-tertiary); display: block; margin-top: 10px; }

.close-btn {
    position: absolute; top: 20px; right: 30px;
    font-size: 40px; color: var(--color-text-tertiary); cursor: pointer;
    transition: color 0.3s;
}

.close-btn:hover { color: var(--color-text-primary); }


/* --- Navigatie Knoppen in Lightbox --- */
.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: var(--color-text-primary);
    border: none;
    font-size: 2rem;
    padding: 15px 20px;
    cursor: pointer;
    border-radius: 50%;
    z-index: 2100;
    transition: all 0.3s ease;
    user-select: none;
}

.nav-btn:hover {
    background: var(--color-accent);
}

.prev { left: 20px; } 
.next { right: 20px; }

@media (max-width: 600px) {
    .nav-btn {
        padding: 5px 15px;
        font-size: 1.5rem;
    }
}

/* --- VASTE FOOTER --- */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #212529; /* Iets donkerder dan de body */
    border-top: 1px solid var(--color-border);
    text-align: center;
    padding: 15px 0;
    z-index: 1000;
}

footer p { margin: 0; color: var(--color-text-tertiary); font-size: 0.85rem; }

.footer-content p {
    margin: 5px 0;
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
}

.footer-content small {
    color: var(--color-border); /* Iets subtieler voor de kleine tekst */