/* ========================================
   CSS Variables für Dark/Light Mode
   ======================================== */

:root {
    /* Light Mode (Standard) */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --accent: #8A2BE2;
    --accent-hover: #9D4EED;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
    --code-bg: #f4f4f4;

    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --border-radius: 8px;
    --transition: 0.3s ease;

    /* Container */
    --max-width: 1400px;
}

/* Dark Mode - automatisch basierend auf System-Einstellung */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0d1117;
        --bg-secondary: #161b22;
        --bg-card: #1c2128;
        --text-primary: #e6edf3;
        --text-secondary: #7d8590;
        --accent: #A855F7;
        --accent-hover: #C084FC;
        --border: #30363d;
        --shadow: rgba(0, 0, 0, 0.4);
        --code-bg: #161b22;
    }
}

/* Manuelles Override wenn User manuell umschaltet */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --accent: #8A2BE2;
    --accent-hover: #9D4EED;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
    --code-bg: #f4f4f4;
}

[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: #1c2128;
    --text-primary: #e6edf3;
    --text-secondary: #7d8590;
    --accent: #A855F7;
    --accent-hover: #C084FC;
    --border: #30363d;
    --shadow: rgba(0, 0, 0, 0.4);
    --code-bg: #161b22;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI',
                 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition),
                color var(--transition);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

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

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

.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all var(--transition);
    z-index: 1000;
    box-shadow: 0 2px 8px var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--accent);
}

/* ========================================
   Header
   ======================================== */

header {
    background: var(--bg-secondary);
    padding: var(--spacing-md) var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 4px var(--shadow);
}

header .container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    order: 1;
}

nav {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    order: 3;
}

nav a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition);
    text-decoration: none;
}

nav a:hover {
    background: var(--bg-primary);
    text-decoration: none;
}

/* ========================================
   Hamburger Menu für Mobile
   ======================================== */

.hamburger {
    display: none; /* Versteckt auf Desktop */
    flex-direction: column;
    justify-content: center;
    cursor: pointer;
    padding: var(--spacing-xs);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    width: 50px;
    height: 50px;
    z-index: 1001;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all var(--transition);
    order: 2; /* Nach h1, vor nav */
}

.hamburger:hover {
    border-color: var(--accent);
    transform: scale(1.05);
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 2px auto;
    transition: all var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile & Tablet Navigation */
@media (max-width: 1024px) {
    header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    header h1 {
        font-size: 2rem;
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }

    .hamburger {
        display: flex; /* Hamburger anzeigen */
        align-self: flex-start; /* Links positionieren */
    }

    nav {
        position: fixed;
        top: 0;
        right: -100%; /* Versteckt außerhalb */
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg) var(--spacing-md);
        box-shadow: -2px 0 8px var(--shadow);
        transition: right var(--transition);
        z-index: 999;
        overflow-y: auto;
        order: 3;
    }

    nav.active {
        right: 0; /* Slide in */
    }

    nav a {
        width: 100%;
        padding: var(--spacing-sm);
        border-bottom: 1px solid var(--border);
    }
}

/* Overlay für Mobile Menu */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition);
}

.nav-overlay.active {
    display: block;
    opacity: 1;
}

/* ========================================
   Main Content
   ======================================== */

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
}

section {
    margin-bottom: var(--spacing-lg);
}

section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.owner-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid var(--accent);
    box-shadow: 0 2px 8px var(--shadow);
}

/* ========================================
   Project Grid
   ======================================== */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition);
    box-shadow: 0 2px 4px var(--shadow);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px var(--shadow);
    border-color: var(--accent);
}

.project-card .project-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.project-card .project-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}

.project-card .project-icon-emoji {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.project-card h3 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.project-card .meta {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

.project-card .version-tag {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.project-card .btn {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--accent);
    color: white;
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition);
    text-decoration: none;
}

.project-card .btn:hover {
    background: var(--accent-hover);
    transform: translateX(4px);
    text-decoration: none;
}

/* ========================================
   Blog Section
   ======================================== */

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

.blog-post {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition);
}

.blog-post:hover {
    box-shadow: 0 4px 12px var(--shadow);
    border-color: var(--accent);
}

.blog-post h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.blog-post h3 a {
    color: var(--text-primary);
    text-decoration: none;
}

.blog-post h3 a:hover {
    color: var(--accent);
}

.blog-post .post-meta {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.blog-post .post-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.blog-post .tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.blog-post .excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.blog-post .read-more {
    color: var(--accent);
    font-weight: 500;
}

/* ========================================
   Code Blocks
   ======================================== */

pre, code {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

pre {
    padding: var(--spacing-sm);
    overflow-x: auto;
    margin: var(--spacing-sm) 0;
}

code {
    padding: 2px 6px;
    font-size: 0.9em;
}

pre code {
    border: none;
    padding: 0;
}

/* ========================================
   Utilities
   ======================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-lg);
}

.error {
    background: #fee;
    color: #c33;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    border: 1px solid #fcc;
}

[data-theme="dark"] .error {
    background: #422;
    color: #faa;
    border-color: #633;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    section h2 {
        font-size: 1.5rem;
    }

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

    .theme-toggle {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    main {
        padding: var(--spacing-md) var(--spacing-xs);
    }
}

/* ========================================
   Blog Post Full View
   ======================================== */

.blog-post-full {
    max-width: 800px;
    margin: 0 auto;
}

.blog-post-full .post-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border);
}

.blog-post-full .post-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.blog-post-full .post-meta {
    display: flex;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.blog-post-full .post-content {
    line-height: 1.8;
    color: var(--text-primary);
}

.blog-post-full .post-content h2 {
    font-size: 1.8rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.blog-post-full .post-content h3 {
    font-size: 1.4rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.blog-post-full .post-content p {
    margin-bottom: var(--spacing-sm);
}

.blog-post-full .post-content ul,
.blog-post-full .post-content ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.blog-post-full .post-content li {
    margin-bottom: var(--spacing-xs);
}

.blog-post-full .post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--spacing-md) 0;
}

.blog-post-full .post-content blockquote {
    border-left: 4px solid var(--accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* Zurück-Button oben (nur Desktop) */
.post-nav-top {
    display: none;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

@media (min-width: 1024px) {
    .post-nav-top {
        display: block;
    }
}

.blog-post-full .post-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

/* ========================================
   Footer
   ======================================== */

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-secondary);
    margin-top: var(--spacing-lg);
}

footer a {
    color: var(--accent);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(138, 43, 226, 0.3);
}

.btn:active {
    transform: translateY(0);
}

/* ========================================
   User Mentions (GitHub @username)
   ======================================== */

/* Avatar-Link (nur das Bild) */
.user-avatar-link {
    display: inline-block;
    margin-right: 0.15rem;
    vertical-align: middle;
    line-height: 0;
}

.user-avatar {
    border-radius: 50%;
    vertical-align: middle;
    display: inline-block;
    transition: transform 0.2s ease;
}

.user-avatar-link:hover .user-avatar {
    transform: scale(1.15);
}

/* Username-Link (nur der Text) */
.user-mention {
    display: inline;
    padding: 0.1rem 0.4rem;
    background: var(--bg-secondary);
    border-radius: 3px;
    text-decoration: none;
    color: var(--accent);
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.user-mention:hover {
    background: var(--accent);
    color: white;
}