/* ====== VARIABLES ====== */
:root {
    /* New color palette */
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    
    /* Borders */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

/* ====== BASE STYLES ====== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding: 0;
    margin: 0;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* ====== TYPOGRAPHY ====== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

h1 {
    font-size: var(--text-3xl);
}

h2 {
    font-size: var(--text-2xl);
}

h3 {
    font-size: var(--text-xl);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

/* ====== LAYOUT COMPONENTS ====== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    padding: var(--spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: var(--spacing-md);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.button {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    text-decoration: none;
}

.button-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.button-secondary:hover {
    background: rgba(37, 99, 235, 0.1);
}

/* ====== HEADER & NAVIGATION ====== */
.landing-header {
    text-align: center;
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.site-title {
    margin: 0;
}

.site-title a {
    color: inherit;
    text-decoration: none;
}

.header {
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.nav {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav li { list-style: none; }

.nav a {
    display: block;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav a:hover {
    background: rgba(37, 99, 235, 0.12);
    text-decoration: none;
}

/* ====== FOOTER ====== */
.footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

/* ====== FORM ELEMENTS ====== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--text-base);
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ====== UTILITY CLASSES ====== */
.text-center {
    text-align: center;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.p-sm {
    padding: var(--spacing-sm);
}

.p-md {
    padding: var(--spacing-md);
}

/* ====== DARK MODE ====== */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0f172a;
        --card-bg: #1e293b;
        --text-color: #f1f5f9;
        --text-light: #cbd5e1;
        --border-color: #334155;
    }
}

/* ====== ANIMATIONS ====== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.5s ease forwards;
}

/* ====== HOME: NAV GRID ====== */
.nav-grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
}

@media (min-width: 640px) {
    .nav-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .nav-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.nav-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -6px rgba(0,0,0,0.12);
    text-decoration: none;
}

.nav-card-icon {
    font-size: 1.75rem;
    color: var(--primary-color);
}

.nav-card h3 {
    margin: 0;
}

/* ====== HOME: HERO ====== */
.home-hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    max-width: 70ch;
    margin: 0 auto;
}

/* ====== HOME: QUICK STATS ====== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-light);
}

/* ====== THEMEN: TOPICS GRID ====== */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .topics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.topic-card {
    display: grid;
    grid-template-columns: 56px 1fr;
    align-items: start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -6px rgba(0,0,0,0.12);
    text-decoration: none;
}

.topic-card-header {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
    font-size: 1.25rem;
}

.topic-card-content h3 {
    margin: 0 0 var(--spacing-xs) 0;
}

.topic-card-link {
    display: inline-block;
    margin-top: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: 600;
}

/* ====== GALLERY ====== */
.gallery-caption {
    gap: var(--spacing-sm);
}

.gallery-caption .meta {
    min-width: 200px;
}

.download-btn {
    white-space: nowrap;
}

/* ====== MAIN NAV (HEADER) ====== */
.main-nav {
    margin-top: var(--spacing-sm);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.25rem 0.5rem;
    box-shadow: var(--shadow);
}

.landing-header .site-subtitle {
    margin-top: var(--spacing-xs);
    color: var(--text-light);
}

/* ====== ARBEITEN LISTE ====== */
.filter-section {
    margin-bottom: var(--spacing-lg);
}

.filter-form {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-form input[type="search"] {
    flex: 1 1 280px;
    min-width: 240px;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--text-base);
}

.search-results-info {
    margin-top: var(--spacing-sm);
    color: var(--text-light);
}

.arbeiten-list {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-md);
}

/* Kachel-Layout ohne Inline-Styles */
.arbeit-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 12px;
    align-items: start;
}

.arbeit-item .thumb {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.arbeit-item .thumb-placeholder {
    width: 140px;
    height: 140px;
    border: 1px dashed var(--border-color);
    border-radius: 6px;
    display: grid;
    place-items: center;
    color: var(--text-light);
    font-size: 12px;
}

@media (min-width: 768px) {
    .arbeiten-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.arbeit-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
}

.arbeit-card h3 {
    margin: 0 0 var(--spacing-xs);
}

.arbeit-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-light);
    margin-bottom: 0px;
}

.arbeit-description {
    margin-top: -5px;
    margin-bottom: var(--spacing-sm);
}

.arbeit-description p {
    margin-top: -5px;
}

.arbeit-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* kompaktere Buttons in Arbeiten-Kacheln */
.arbeit-actions .button,
.arbeit-actions .button-secondary {
    padding: 0.35rem 0.6rem;
    font-size: 0.9rem;
}

/* Thumbnail-Spalte vertikal zentrieren */
.arbeit-item > div:first-child {
    align-self: center;
}

.download-button {
    background: var(--primary-color);
    color: #fff;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
}

.delete-button {
    background: var(--error-color);
    color: #fff;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 0;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}