:root {
    /* Modernes Hell/Dunkelgrau - kein reines Schwarz/Weiß */
    --color-bg: #f4f4f5;       
    --color-text: #18181b;     
    --color-text-muted: #52525b; 
    --color-placeholder: rgba(24, 24, 27, 0.08); 
    
    /* Layout */
    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    
    --max-width: 1200px;
}

/* Dark Mode Variablen (greift auf html oder body) */
html.dark-mode, body.dark-mode {
    --color-bg: #18181b;
    --color-text: #f4f4f5;
    --color-text-muted: #a1a1aa;
    --color-placeholder: rgba(244, 244, 245, 0.08);
}

/* --- Textauswahl (Selection) --- */
::selection {
    background-color: var(--color-text);
    color: var(--color-bg);
}
::-moz-selection {
    background-color: var(--color-text);
    color: var(--color-bg);
}

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

body {
    font-family: 'Cousine', monospace, sans-serif; 
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-size: 16px; 
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Globale Links & SVGs --- */
a, button {
    color: var(--color-text);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: none;
    font-family: inherit;
    font-size: inherit;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    line-height: 1; 
}

/* Hover-Effekt mit der neuen, feineren Thickness */
a:hover, button:hover {
    text-decoration: underline;
    text-underline-position: under;
    text-decoration-thickness: 0.09em; 
}

a:focus-visible, button:focus-visible {
    outline: 2px dashed var(--color-text);
    outline-offset: 4px;
}

.nav-arrow {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    margin-bottom: 3px; 
}

/* Linien (Divider) */
.main-divider {
    border: none;
    height: 2px;
    background-color: var(--color-text);
    width: 100%;
}

/* --- Layout: Generell --- */
.page-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Startseite (Index) --- */
.start-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.start-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    /* Hover-Effekt hier komplett entfernt! */
}

.start-divider {
    margin-bottom: var(--spacing-lg);
}

.start-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(20px, 6vw, 60px); 
    width: 100%;
}

.nav-item {
    font-size: 1.2rem;
}

/* --- Unterseiten Header (Mockup 2) --- */
.site-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: var(--spacing-lg) 0 var(--spacing-md) 0;
    gap: var(--spacing-md);
}

.site-header .logo a {
    font-size: 2rem;
    font-weight: bold;
    letter-spacing: 1px;
    gap: 0;
    transition: opacity 0.2s ease;
}

.site-header .logo a:hover {
    text-decoration: none;
    opacity: 0.6;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-right {
    justify-content: flex-end; 
}

@media (max-width: 768px) {
    .site-header {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
        padding-top: var(--spacing-md);
    }
    .nav-links {
        gap: var(--spacing-md);
        justify-content: center;
    }
}

/* --- Content Bereich (Galerie) --- */
.content-container {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.intro-text {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl) auto;
    font-size: 1.1rem;
    color: var(--color-text);
}

/* --- Masonry-Galerie --- */
.gallery-grid { 
    column-count: 1; 
    column-gap: var(--spacing-sm); 
}
@media (min-width: 500px) { .gallery-grid { column-count: 2; } }
@media (min-width: 800px) { .gallery-grid { column-count: 3; } }
@media (min-width: 1100px) { .gallery-grid { column-count: 4; } }

.gallery-item { 
    display: block; 
    overflow: hidden; 
    margin-bottom: var(--spacing-sm); 
    break-inside: avoid; 
    background-color: var(--color-placeholder); 
}

.gallery-item img { 
    width: 100%; 
    height: auto; 
    display: block; 
    opacity: 0; 
    transition: opacity 0.6s ease; 
}

.gallery-item img.is-loaded { 
    opacity: 1; 
}

/* --- Footer --- */
.footer-divider {
    margin-top: auto; 
    margin-bottom: var(--spacing-md);
}

.site-footer {
    display: flex;
    justify-content: space-between;
    padding-bottom: var(--spacing-md);
}