/* ==========================================================================
   CSS Foundation for wissmueller.net
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Reset (minimal)
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
}

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

/* --------------------------------------------------------------------------
   2. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */

:root {
    /* Colors - Dark terminal-inspired palette */
    --color-primary: #cdd6f4;
    --color-text: #cdd6f4;
    --color-text-muted: #a6adc8;
    --color-bg: #1e1e2e;
    --color-bg-subtle: #313244;
    --color-accent: #89b4fa;
    --color-accent-secondary: #a6e3a1;
    --color-border: #45475a;

    /* Typography - System font stack */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                   "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --line-height: 1.6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Layout */
    --container-max-width: 48rem;
    --container-padding: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   3. Base Typography
   -------------------------------------------------------------------------- */

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
}

h1, h2, h3 {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--color-primary);
    line-height: 1.3;
}

h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

p {
    margin: 0 0 var(--spacing-md) 0;
}

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

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

.tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   4. Layout Utilities
   -------------------------------------------------------------------------- */

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

/* --------------------------------------------------------------------------
   5. Header Styles
   -------------------------------------------------------------------------- */

header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

header nav {
    display: flex;
    align-items: center;
}

.site-title {
    font-weight: 600;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
}

.site-title:hover {
    text-decoration: none;
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   5a. Navigation Links
   -------------------------------------------------------------------------- */

.nav-links {
    display: flex;
    align-items: center;
    margin-left: var(--spacing-xl);
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.nav-link.active {
    color: var(--color-accent);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   5b. Language Switcher
   -------------------------------------------------------------------------- */

.lang-switcher {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.lang-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
}

.lang-link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.lang-link.active {
    color: var(--color-accent);
    font-weight: 600;
}

.lang-separator {
    color: var(--color-text-muted);
    padding: 0 var(--spacing-xs);
}

/* --------------------------------------------------------------------------
   6. Main Content
   -------------------------------------------------------------------------- */

main {
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - 200px);
}

/* --------------------------------------------------------------------------
   6a. About Page Styles
   -------------------------------------------------------------------------- */

.about-section {
    margin-bottom: var(--spacing-2xl);
}

.about-section h2 {
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.skills-list,
.cert-list,
.links-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.skills-list li,
.cert-list li,
.links-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-bg-subtle);
}

.skills-list li:last-child,
.cert-list li:last-child,
.links-list li:last-child {
    border-bottom: none;
}

/* --------------------------------------------------------------------------
   6b. Product Page Styles
   -------------------------------------------------------------------------- */

.product-hero {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.product-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

.product-section {
    margin-bottom: var(--spacing-2xl);
}

.product-section h2 {
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-bg-subtle);
}

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

.platform-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.platform-badge {
    background-color: var(--color-bg-subtle);
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
}

.store-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.store-link {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.store-link:hover {
    background-color: var(--color-accent-secondary);
    color: var(--color-bg);
    text-decoration: none;
}

.version-info {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   7. Footer Styles
   -------------------------------------------------------------------------- */

footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg-subtle);
}

footer p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

/* --------------------------------------------------------------------------
   8. Responsive Breakpoint (~768px)
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   9. Blog Styles
   -------------------------------------------------------------------------- */

/* Blog listing page */
.blog-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-list-item {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-bg-subtle);
}

.blog-list-item:last-child {
    border-bottom: none;
}

.blog-list-item h2 {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-lg);
    border-bottom: none;
    padding-bottom: 0;
}

.blog-list-item h2 a {
    color: var(--color-primary);
}

.blog-list-item h2 a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.blog-list-item .post-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.blog-list-item .post-excerpt {
    color: var(--color-text);
    margin: 0;
}

/* Blog post page */
.blog-post {
    max-width: 100%;
}

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

.post-header h1 {
    margin-bottom: var(--spacing-sm);
}

.post-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

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

.post-tag {
    background-color: var(--color-bg-subtle);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
}

/* Blog post content */
.post-content {
    line-height: 1.8;
}

.post-content h2 {
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.post-content h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

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

.post-content ul,
.post-content ol {
    margin: 0 0 var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.post-content li {
    margin-bottom: var(--spacing-sm);
}

.post-content code {
    background-color: var(--color-bg-subtle);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: var(--font-size-sm);
}

.post-content pre {
    background-color: var(--color-bg-subtle);
    padding: var(--spacing-md);
    border-radius: 4px;
    overflow-x: auto;
    margin: var(--spacing-md) 0 var(--spacing-lg) 0;
    border: 1px solid var(--color-border);
}

.post-content pre code {
    background: none;
    padding: 0;
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-bg-subtle);
    font-style: italic;
}

.post-content img {
    border-radius: 4px;
    margin: var(--spacing-md) 0;
    border: 1px solid var(--color-border);
}

.back-link {
    display: inline-block;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   10. Responsive Breakpoint (~768px)
   -------------------------------------------------------------------------- */

@media (min-width: 768px) {
    :root {
        --font-size-base: 1.0625rem;
        --font-size-2xl: 2.5rem;
        --container-padding: var(--spacing-xl);
    }

    main {
        padding: var(--spacing-2xl) 0 var(--spacing-2xl) 0;
    }
}