/* Intellectual Library Blog Design - Warm & Cozy */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Crimson+Text:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    /* Warm Library Color Palette */
    --primary: #1f2937;
    --primary-light: #334155;
    --secondary: #8B4513;
    --accent: #1e3a8a;
    --accent-light: #475569;
    --text-primary: #1f2937;
    --text-secondary: #475569;
    --text-muted: #6b7280;
    --background: #f8fafc;
    --surface: #f1f5f9;
    --surface-elevated: #ffffff;
    --border: #e2e8f0;
    --border-subtle: #f8fafc;
    --shadow-sm: 0 1px 3px rgba(31, 41, 55, 0.08);
    --shadow-md: 0 4px 8px rgba(31, 41, 55, 0.12);
    --shadow-lg: 0 8px 16px rgba(31, 41, 55, 0.16);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

body {
    font-family: 'Crimson Text', Georgia, serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.75;
    font-size: 18px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "kern" "liga";
}

/* Library Header */
header {
    background: var(--surface-elevated);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(250, 247, 242, 0.95);
    box-shadow: var(--shadow-sm);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left .brand {
    color: var(--primary);
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 1.75rem;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.3s ease;
    letter-spacing: -0.025em;
}

.nav-left .brand:hover {
    color: var(--secondary);
}

.nav-right {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

/* Main Content */
main {
    max-width: 680px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: calc(100vh - 200px);
}

.home-content {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

.home-content h1 {
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2.5rem;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.home-content p {
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 400;
    text-indent: 2rem;
}

.cta-button {
    margin-top: 3rem;
}

.button {
    display: inline-block;
    background: var(--text-primary);
    color: white;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--text-primary);
}

.button:hover {
    background: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
    color: white;
}

/* Blog Layout */
.blog-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 680px;
    margin: 0 auto;
}

.blog-content {
    width: 100%;
}

.blog-sidebar {
    display: none;
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.article-preview {
    background: var(--surface-elevated);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.article-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.article-preview:hover::before {
    opacity: 1;
}

.article-preview:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.article-preview h2 {
    font-family: 'Crimson Text', Georgia, serif;
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.article-preview h2 a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-preview h2 a:hover {
    color: var(--secondary);
    text-decoration: underline;
}

.article-preview .intro {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 1.25rem;
    font-weight: 400;
    text-indent: 1rem;
}

.article-preview .meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-style: italic;
}

.article-preview a {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s ease;
}

.article-preview a::after {
    content: '→';
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.article-preview a:hover::after {
    transform: translateX(2px);
}

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

/* Search */
.search-container {
    background: var(--surface-elevated);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.search-container h3 {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    background: var(--background);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Article Page */
.article-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface-elevated);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.article-content h1 {
    font-family: 'Crimson Text', Georgia, serif;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.article-content .date {
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 3rem;
    text-align: right;
    font-size: 0.875rem;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-style: italic;
}

.article-content p {
    margin-bottom: 2rem;
    text-indent: 2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 1.25rem;
    font-weight: 400;
}

.article-content .quote {
    background: var(--surface);
    padding: 2rem 2.5rem;
    border-left: 4px solid var(--accent);
    margin: 3rem 0;
    font-style: italic;
    text-indent: 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: 1.5rem;
    color: var(--text-secondary);
    position: relative;
    font-family: 'Crimson Text', Georgia, serif;
}

.article-content .quote::before {
    content: '"';
    font-family: 'Crimson Text', Georgia, serif;
    font-size: 4rem;
    color: var(--accent);
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    opacity: 0.3;
    line-height: 1;
}

.article-content .signature {
    text-align: right;
    margin-top: 4rem;
    font-style: italic;
    color: var(--text-muted);
    font-size: 1.25rem;
    font-weight: 500;
    font-family: 'Crimson Text', Georgia, serif;
}

/* Contact Page */
.kontakt-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--surface-elevated);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.kontakt-content h1 {
    font-family: 'Merriweather', Georgia, serif;
    color: var(--text-primary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.kontakt-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.kontakt-item {
    font-size: 1.125rem;
    color: var(--text-secondary);
    padding: 1.5rem;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.kontakt-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    border-color: var(--accent);
}

.kontakt-item a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.kontakt-item a:hover {
    color: var(--accent-hover);
}

/* Modern Footer */
footer {
    background: var(--primary);
    color: white;
    padding: 2rem 0;
    margin-top: 6rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left p,
.footer-right p {
    margin: 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    font-family: 'Inter', sans-serif;
}

.footer-left a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-left a:hover {
    color: var(--accent-light);
    text-decoration: underline;
}

.footer-left p:hover,
.footer-right p:hover {
    color: rgba(255, 255, 255, 0.9);
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
        padding: 1rem;
    }
    
    .nav-right {
        gap: 1.5rem;
    }
    
    .nav-left .brand {
        font-size: 1.25rem;
    }
    
    main {
        padding: 1rem 0.75rem;
        max-width: 95%;
    }
    
    .home-content {
        padding: 0.5rem 0;
    }
    
    .home-content h1 {
        font-size: 1.875rem;
        line-height: 1.3;
        margin-bottom: 2rem;
    }
    
    .home-content p {
        font-size: 1.25rem;
        line-height: 1.9;
        margin-bottom: 2rem;
        text-indent: 1.5rem;
        padding: 0 0.5rem;
    }
    
    .article-content h1,
    .kontakt-content h1 {
        font-size: 1.875rem;
        line-height: 1.3;
        margin-bottom: 2rem;
    }
    
    .article-content,
    .kontakt-content {
        padding: 1.5rem 1rem;
        margin: 0 0.5rem;
    }
    
    .article-content p {
        font-size: 1.25rem;
        line-height: 1.9;
        text-indent: 1.5rem;
        padding: 0 0.25rem;
        margin-bottom: 1.75rem;
    }
    
    .article-preview {
        padding: 1.5rem 1rem;
        margin: 0 0.5rem;
    }
    
    .article-preview h2 {
        font-size: 1.5rem;
        line-height: 1.3;
        margin-bottom: 1.25rem;
    }
    
    .article-preview .intro {
        font-size: 1.125rem;
        line-height: 1.8;
        text-indent: 1rem;
        padding: 0 0.25rem;
        margin-bottom: 1.5rem;
    }
    
    .article-preview .meta {
        font-size: 0.95rem;
        margin-bottom: 1.25rem;
    }
    
    .search-container {
        padding: 1rem;
        margin: 0 0.5rem 1rem;
    }
    
    .search-input {
        font-size: 1.125rem;
        padding: 1rem;
    }
    
    .button {
        padding: 1rem 2rem;
        font-size: 1.125rem;
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .kontakt-content {
        padding: 1.5rem 1rem;
        margin: 0 0.5rem;
    }
    
    .kontakt-info {
        font-size: 1.125rem;
        line-height: 1.8;
    }
    
    .kontakt-item {
        margin-bottom: 1.5rem;
        padding: 0 0.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1.5rem 1rem;
    }
    
    .footer-content p {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .nav-link {
        font-size: 1rem;
        padding: 0.5rem 0;
    }
    
    .cta-button {
        margin-top: 2rem;
    }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
    main {
        padding: 0.75rem 0.5rem;
        max-width: 98%;
    }
    
    .home-content h1 {
        font-size: 1.5rem;
        line-height: 1.25;
        margin-bottom: 1.5rem;
    }
    
    .home-content p {
        font-size: 1.125rem;
        line-height: 1.8;
        margin-bottom: 2rem;
        text-indent: 1rem;
        padding: 0 0.25rem;
    }
    
    .article-content h1,
    .kontakt-content h1 {
        font-size: 1.5rem;
        line-height: 1.25;
        margin-bottom: 1.5rem;
    }
    
    .article-content,
    .kontakt-content {
        padding: 1.25rem 0.75rem;
        margin: 0 0.25rem;
    }
    
    .article-content p {
        font-size: 1.125rem;
        line-height: 1.8;
        text-indent: 1rem;
        padding: 0 0.125rem;
        margin-bottom: 1.5rem;
    }
    
    .article-preview {
        padding: 1.25rem 0.75rem;
        margin: 0 0.25rem;
    }
    
    .article-preview h2 {
        font-size: 1.375rem;
        line-height: 1.25;
        margin-bottom: 1rem;
    }
    
    .article-preview .intro {
        font-size: 1.125rem;
        line-height: 1.7;
        text-indent: 0.75rem;
        padding: 0 0.125rem;
        margin-bottom: 1.25rem;
    }
    
    .button {
        padding: 1.125rem 1.75rem;
        font-size: 1.125rem;
        min-height: 48px;
    }
    
    .search-input {
        font-size: 1.125rem;
        padding: 1rem;
    }
    
    .kontakt-info {
        font-size: 1.125rem;
        line-height: 1.8;
    }
    
    .nav-left .brand {
        font-size: 1.125rem;
    }
    
    .nav-link {
        font-size: 0.95rem;
    }
}