/**
 * KI-Kartierung Public Website Styles - KOMPAKTE VERSION
 * Optimiert für weniger Scrollen und dichtere Informationsdarstellung
 */

/* CSS Variables - REDUZIERTE ABSTÄNDE */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #7c3aed;
    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-border: #e5e7eb;
    --color-text: #111827;
    --color-text-secondary: #6b7280;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* REDUZIERTE Spacing-Werte */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;

    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    --max-width: 1280px;
    --content-width: 800px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header - KOMPAKTER */
.site-header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0;
}

.logo p {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.logo a {
    color: inherit;
}

.logo a:hover {
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    gap: var(--spacing-md);
}

.main-nav a {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--color-surface);
    color: var(--color-primary);
}

/* Hero Section - KOMPAKTER */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    max-width: 700px;
    margin: 0 auto;
}

.search-box form {
    display: flex;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    background: white;
}

.search-input.large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
}

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

.search-button {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.search-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Stats Section - KOMPAKTER */
.stats-section {
    padding: var(--spacing-xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.2s;
    color: inherit;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Latest Section - KOMPAKTER */
.latest-section,
.categories-section,
.content-section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.view-all {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Cards Grid - KOMPAKTER */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.content-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.2s;
}

.content-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.card-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-title a {
    color: var(--color-text);
}

.card-title a:hover {
    color: var(--color-primary);
}

.card-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.category-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.card-excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    font-size: 0.875rem;
}

.card-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Categories Grid - KOMPAKTER */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.category-card {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.2s;
    color: inherit;
}

.category-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.category-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.category-card p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.category-link-arrow {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 1.25rem;
    color: var(--color-primary);
}

/* Page Header - KOMPAKTER */
.page-header {
    background: var(--color-surface);
    padding: var(--spacing-lg) 0;
}

.breadcrumb {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.breadcrumb a {
    color: var(--color-text-secondary);
}

.breadcrumb a:hover {
    color: var(--color-primary);
}

.page-subtitle {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-sm);
}

/* Filters - KOMPAKTER */
.filters-section {
    background: white;
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 57px;
    z-index: 90;
}

.filters-bar {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.filter-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: white;
    cursor: pointer;
    font-size: 0.875rem;
}

.checkbox-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-size: 0.875rem;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

.results-count {
    margin-left: auto;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Content List - KOMPAKTER */
.content-list,
.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.list-item,
.search-result-item {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.2s;
}

.list-item:hover,
.search-result-item:hover {
    box-shadow: var(--shadow-md);
}

.list-item-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.list-item-title a {
    color: var(--color-text);
}

.list-item-title a:hover {
    color: var(--color-primary);
}

.list-item-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.icon {
    width: 14px;
    height: 14px;
}

.list-item-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    line-height: 1.5;
}

.list-item-footer {
    display: flex;
    justify-content: flex-end;
}

.details-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Detail Page - KOMPAKTER */
.detail-page {
    background: var(--color-surface);
}

.breadcrumb-section {
    padding: var(--spacing-sm) 0;
    background: white;
}

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

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xl);
}

.detail-main {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
}

.detail-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.detail-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.institution {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-top: var(--spacing-md);
}

.detail-body {
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.detail-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.detail-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.detail-body p {
    margin-bottom: var(--spacing-md);
}

.detail-body ul,
.detail-body ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.detail-body li {
    margin-bottom: var(--spacing-xs);
}

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

.action-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    border: none;
}

.action-button.primary {
    background: var(--color-primary);
    color: white;
}

.action-button.primary:hover {
    background: var(--color-primary-dark);
}

.action-button.secondary {
    background: white;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.action-button.secondary:hover {
    background: var(--color-surface);
}

/* Sidebar - KOMPAKTER */
.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-box {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.info-box h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item dt {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.125rem;
}

.info-item dd {
    color: var(--color-text);
    font-size: 0.875rem;
}

.source-link {
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Search Page - KOMPAKTER */
.search-page {
    min-height: calc(100vh - 200px);
}

.search-header {
    background: var(--color-surface);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.search-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

.search-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 900px;
    margin: 0 auto;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.clear-button {
    padding: var(--spacing-xs) var(--spacing-md);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.clear-button:hover {
    background: var(--color-surface);
}

/* Search Results - KOMPAKTER */
.result-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.result-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.result-main {
    flex: 1;
}

.result-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.result-title a {
    color: var(--color-text);
}

.result-title a:hover {
    color: var(--color-primary);
}

.result-meta {
    display: flex;
    gap: var(--spacing-sm);
}

.institution-badge {
    padding: 0.125rem 0.5rem;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border-radius: 9999px;
    font-size: 0.75rem;
}

.result-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    font-size: 0.875rem;
}

.result-description mark {
    background: #fef3c7;
    padding: 0.0625rem 0.125rem;
    border-radius: 0.125rem;
}

.result-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.relevance-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.relevance-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.relevance-bar-container {
    width: 80px;
    height: 4px;
    background: var(--color-surface);
    border-radius: 9999px;
    overflow: hidden;
}

.relevance-bar-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s;
}

.relevance-percent {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
}

.result-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.empty-icon {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.empty-state p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.loading-spinner {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-md);
    border: 3px solid var(--color-surface);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Footer - KOMPAKTER */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-info {
    text-align: right;
    color: var(--color-text-secondary);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .detail-sidebar {
        order: -1;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.25rem;
        --spacing-2xl: 1.5rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .search-box form {
        flex-direction: column;
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .main-nav {
        width: 100%;
        justify-content: space-around;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-info {
        text-align: center;
    }

    .filters-bar {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .detail-actions,
    .breadcrumb {
        display: none;
    }

    .detail-page {
        background: white;
    }

    .detail-grid {
        grid-template-columns: 1fr;
    }
}