/* ==========================================
   Respekt Kollege! Theme
   Version 0.2 beta
   
   Design-Prinzipien:
   - Schweizer Typografie (Präzision, Klarheit)
   - Skandinavischer Minimalismus (Weißraum, Funktion)
   - Farbe nur durch Bilder
   - Struktur durch helle Grautöne
   ========================================== */

:root {
    /* Light Mode */
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #999999;
    --border-color: #f5f5f5;
    --border-visible: #e8e8e8;
    --link-color: #1a1a1a;
    --link-hover: #666666;
    --toggle-bg: #f8f8f8;
    --toggle-border: #e0e0e0;
    --toggle-text: #1a1a1a;
}

[data-theme="dark"] {
    /* Dark Mode */
    --bg-color: #1a1a1a;
    --text-color: #d4d4d4;
    --text-secondary: #888888;
    --border-color: #252525;
    --border-visible: #2a2a2a;
    --link-color: #d4d4d4;
    --link-hover: #ffffff;
    --toggle-bg: #252525;
    --toggle-border: #333333;
    --toggle-text: #d4d4d4;
}

/* ==========================================
   Base Styles
   ========================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 300;
    line-height: 1.75;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

/* ==========================================
   Typography - Schweizer Präzision
   ========================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1.5rem;
}

a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

/* ==========================================
   Layout - Skandinavischer Weißraum
   ========================================== */

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ==========================================
   Theme Toggle
   ========================================== */

.theme-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background-color: var(--toggle-bg);
    border: 1px solid var(--toggle-border);
    color: var(--toggle-text);
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 400;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s ease;
    font-family: inherit;
    z-index: 1000;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.theme-toggle:hover {
    border-color: var(--border-visible);
}

.theme-toggle:focus {
    outline: 2px solid var(--link-color);
    outline-offset: 2px;
}

[data-theme="light"] .dark-icon,
[data-theme="dark"] .light-icon {
    display: none;
}

[data-theme="light"] .light-icon,
[data-theme="dark"] .dark-icon {
    display: inline;
}

.dark-icon {
    display: none;
}

@media (max-width: 768px) {
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        font-size: 0.75rem;
        padding: 0.4rem 0.6rem;
    }
}

/* ==========================================
   Header - Helle Grautöne für Struktur
   ========================================== */

header {
    padding: 5rem 0 3rem;
    border-bottom: 1px solid var(--border-visible);
    margin-bottom: 5rem;
    background-color: var(--border-color);
}

.site-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.03em;
}

.site-title a {
    border: none;
}

.site-title a:hover {
    color: var(--link-hover);
}

/* ==========================================
   Posts - Maximaler Weißraum
   ========================================== */

.post {
    margin-bottom: 7rem;
}

.post:last-child {
    margin-bottom: 5rem;
}

.post-title {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
    letter-spacing: -0.03em;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.75rem;
}

.post-date {
    display: inline-block;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.02em;
}

.post-permalink {
    display: inline-flex;
    align-items: center;
    opacity: 0.4;
    transition: opacity 0.2s ease;
    border: none;
    padding: 0.125rem;
}

.post-permalink:hover {
    opacity: 1;
    border: none;
}

.post-permalink svg {
    display: block;
}

.post-image {
    margin-bottom: 2rem;
    line-height: 0;
}

.post-image img {
    width: 100%;
    height: auto;
    display: block;
}

.post-content {
    font-size: 1.0625rem;
    line-height: 1.75;
    font-weight: 300;
}

.post-content p:last-child {
    margin-bottom: 0;
}

.post-content strong {
    font-weight: 600;
}

.post-content em {
    font-style: italic;
}

.post-content h2,
.post-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.post-content a {
    font-weight: 400;
}

/* ==========================================
   Pagination
   ========================================== */

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 5rem 0 3rem;
    flex-wrap: wrap;
}

.page-number {
    display: inline-block;
    padding: 0.5rem 0.875rem;
    border: 1px solid var(--border-visible);
    border-radius: 3px;
    color: var(--text-color);
    transition: all 0.2s ease;
    min-width: 2.5rem;
    text-align: center;
    font-size: 0.9375rem;
}

.page-number:hover {
    border-color: var(--text-color);
    background-color: var(--border-color);
}

.page-number.active {
    background-color: var(--text-color);
    color: var(--bg-color);
    border-color: var(--text-color);
}

.page-number.active:hover {
    background-color: var(--link-hover);
    border-color: var(--link-hover);
}

/* ==========================================
   Footer - Struktur durch Grautöne
   ========================================== */

footer {
    padding: 3rem 0 2.5rem;
    border-top: 1px solid var(--border-visible);
    margin-top: 5rem;
    background-color: var(--border-color);
}

.footer-made {
    text-align: center;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.footer-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    font-size: 0.8125rem;
    margin-bottom: 1rem;
}

.footer-nav a {
    color: var(--text-secondary);
    border: none;
    font-weight: 400;
}

.footer-nav a:hover {
    color: var(--text-color);
    border-bottom: 1px solid var(--text-color);
}

.footer-nav .separator {
    color: var(--text-secondary);
    opacity: 0.5;
}

.footer-copyright {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 400;
    opacity: 0.8;
}

/* ==========================================
   Responsive - Mobile Optimierung
   ========================================== */

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    header {
        padding: 4rem 0 2rem;
        margin-bottom: 4rem;
    }
    
    .post {
        margin-bottom: 5rem;
    }
    
    .post-title {
        font-size: 1.5rem;
    }
    
    .post-content {
        font-size: 1rem;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-nav .separator {
        display: none;
    }
}

@media (max-width: 480px) {
    .post-title {
        font-size: 1.375rem;
    }
}

/* ==========================================
   Print Styles
   ========================================== */

@media print {
    .theme-toggle,
    .pagination,
    footer {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}