/* =====================================================
   AustriAI - Hauptstylesheet
   Österreichisches KI-Nachrichtenportal
   ===================================================== */

/* CSS Variables */
:root {
    --color-primary: #CC0000;
    --color-secondary: #1a1a1a;
    --color-text: #333;
    --color-text-light: #666;
    --color-bg: #f5f5f5;
    --color-white: #fff;
    --color-border: #ddd;
    
    /* Kategoriefarben */
    --cat-politik: #CC0000;
    --cat-wirtschaft: #1A5276;
    --cat-chronik: #7D6608;
    --cat-sport: #1E8449;
    --cat-kultur: #6C3483;
    --cat-wissenschaft: #117A65;
    --cat-international: #2E4057;
    --cat-wetter: #1A6E8A;
    --cat-leben: #A93226;
    --cat-technologie: #1F618D;
    
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-headline: Georgia, 'Times New Roman', serif;
    
    --max-width: 1200px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

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

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

body {
    font-family: var(--font-main);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    text-decoration: underline;
}

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

/* Header */
.site-header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-top {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-sm) 0;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-brand {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-md);
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    text-decoration: none;
}

.logo-austri {
    color: var(--color-white);
}

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

.tagline {
    font-size: 0.875rem;
    color: #aaa;
    display: none;
}

.current-date {
    font-size: 0.875rem;
    color: #aaa;
}

/* Navigation */
.main-nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    padding: var(--spacing-md);
    cursor: pointer;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.2s;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-menu {
    display: none;
    list-style: none;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.nav-menu.active {
    display: flex;
    padding-bottom: var(--spacing-md);
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    background: var(--cat-color, var(--color-primary));
    color: var(--color-white);
    text-decoration: none;
}

/* Region Navigation */
.region-nav {
    background: #f9f9f9;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
}

.region-nav .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.region-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-light);
    white-space: nowrap;
}

.region-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    flex-wrap: nowrap;
}

.region-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--color-text-light);
    white-space: nowrap;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.region-link:hover,
.region-link.active {
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
}

/* Main Content */
.site-main {
    padding: var(--spacing-lg) 0;
    min-height: 60vh;
}

/* Page Title */
.page-title {
    font-family: var(--font-headline);
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-primary);
}

/* Article Grid */
.article-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

/* Article Card */
.article-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.article-card:hover {
    box-shadow: var(--shadow-md);
}

.article-card-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.article-card:hover .article-card-image img {
    transform: scale(1.03);
}

.article-card-category {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--cat-color, var(--color-primary));
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

.article-card-content {
    padding: var(--spacing-md);
}

.article-card-title {
    font-family: var(--font-headline);
    font-size: 1.1rem;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

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

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

.article-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* Featured Article (Hero) */
.hero-section {
    margin-bottom: var(--spacing-xl);
}

.hero-article {
    display: grid;
    gap: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.hero-image {
    aspect-ratio: 16/9;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    padding: var(--spacing-lg);
}

.hero-category {
    display: inline-block;
    background: var(--cat-color, var(--color-primary));
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-family: var(--font-headline);
    font-size: 1.75rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-excerpt {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* Article Detail */
.article-detail {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.breadcrumb {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

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

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

.article-badges {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.category-badge {
    background: var(--cat-color, var(--color-primary));
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.region-badge {
    background: #eee;
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.article-title {
    font-family: var(--font-headline);
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

/* AI Transparency Box */
.ai-transparency-box {
    display: flex;
    gap: var(--spacing-md);
    background: #f8f9fa;
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

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

.ai-transparency-box strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.ai-transparency-box p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin: 0;
}

/* LLM Summary */
.llm-summary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.summary-headline {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.llm-summary p {
    margin: 0;
    line-height: 1.6;
}

/* Article Image */
.article-image {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: auto;
}

.ai-image-note {
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-align: center;
    padding: var(--spacing-sm);
    background: #f9f9f9;
}

/* Key Facts Box */
.key-facts-box {
    background: #f0f7ff;
    border: 1px solid #cce5ff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.key-facts-headline {
    font-size: 1.1rem;
    color: #004085;
    margin-bottom: var(--spacing-md);
}

.key-facts-list {
    list-style: none;
}

.key-facts-list li {
    padding: var(--spacing-sm) 0;
    padding-left: 1.5rem;
    position: relative;
    border-bottom: 1px solid #cce5ff;
}

.key-facts-list li:last-child {
    border-bottom: none;
}

.key-facts-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #004085;
    font-weight: bold;
}

/* Article Content */
.article-content {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.article-content p {
    margin-bottom: var(--spacing-md);
}

.article-content h2,
.article-content h3 {
    font-family: var(--font-headline);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

/* FAQ Section */
.article-faq {
    background: #f9f9f9;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.article-faq h2 {
    font-family: var(--font-headline);
    margin-bottom: var(--spacing-lg);
}

.faq-item {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-question {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.faq-answer p {
    margin: 0;
    color: var(--color-text-light);
}

/* Entities */
.article-entities {
    margin-bottom: var(--spacing-lg);
}

.article-entities h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.entity-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.entity-tag {
    background: #eee;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.entity-tag.entity-person {
    background: #e3f2fd;
    color: #1565c0;
}

.entity-tag.entity-org {
    background: #f3e5f5;
    color: #7b1fa2;
}

.entity-tag.entity-place {
    background: #e8f5e9;
    color: #2e7d32;
}

/* Article Footer */
.article-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.source-note {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Footer */
.site-footer {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-desc {
    color: #aaa;
    margin-bottom: var(--spacing-sm);
}

.footer-note {
    font-size: 0.85rem;
    color: #888;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: #aaa;
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid #444;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: var(--spacing-xs);
}

.footer-disclaimer a {
    color: #aaa;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
}

.pagination a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
}

.pagination .current {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Content Pages */
.content-page {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.content-page h1 {
    font-family: var(--font-headline);
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-primary);
}

.content-page h2 {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.content-page h3 {
    font-size: 1.2rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.content-page p {
    margin-bottom: var(--spacing-md);
}

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

/* Contact Form */
.contact-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: #a00000;
    text-decoration: none;
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

/* Responsive Design */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
    }
    
    .tagline {
        display: block;
    }
    
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-article {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-image {
        aspect-ratio: auto;
    }
    
    .article-title {
        font-size: 2.5rem;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .article-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }