/* ========================================
   Jahn Consulting — Style
   Typografie-getrieben, reduziert, klar.
   ======================================== */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:wght@400;600;700&family=Inter:wght@400;500&display=swap');

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

/* Variablen */
:root {
    --color-bg: #fafaf8;
    --color-text: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-accent: #2c3e50;
    --color-border: #d4d0c8;
    --color-link: #2c3e50;
    --color-link-hover: #1a252f;

    --font-serif: 'Source Serif 4', 'Georgia', serif;
    --font-sans: 'Inter', -apple-system, 'Helvetica Neue', sans-serif;

    --max-width: 680px;
    --max-width-wide: 900px;
    --spacing-unit: 1.5rem;
}

/* Base */
html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 {
    font-size: 2.4rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

h2 {
    font-size: 1.6rem;
    margin-bottom: var(--spacing-unit);
}

h3 {
    font-size: 1.2rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

p {
    margin-bottom: var(--spacing-unit);
    max-width: var(--max-width);
}

a {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s ease;
}

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

/* Layout */
.site-header {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2);
    max-width: var(--max-width-wide);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.site-name {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.site-name:hover {
    color: var(--color-accent);
}

.site-nav {
    display: flex;
    gap: calc(var(--spacing-unit) * 1.5);
}

.site-nav a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    letter-spacing: 0.01em;
}

.site-nav a:hover {
    color: var(--color-text);
}

.site-nav a.active {
    color: var(--color-text);
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* Main Content */
main {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
}

/* Portrait */
.portrait {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    flex-shrink: 0;
}

.portrait-about {
    width: 160px;
    height: 160px;
    float: right;
    margin: 0 0 var(--spacing-unit) calc(var(--spacing-unit) * 2);
}

/* Hero Section */
.hero {
    margin-bottom: calc(var(--spacing-unit) * 4);
    padding-bottom: calc(var(--spacing-unit) * 3);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 3);
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: 2.4rem;
    max-width: var(--max-width);
    line-height: 1.25;
}

.hero p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* Service Blocks */
.services {
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.service-block {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
    border-bottom: none;
}

.service-block h2 {
    font-size: 1.4rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.service-block p {
    color: var(--color-text-secondary);
}

/* Service Detail (Leistungen page) */
.service-detail {
    margin-bottom: calc(var(--spacing-unit) * 4);
    padding-bottom: calc(var(--spacing-unit) * 3);
    border-bottom: 1px solid var(--color-border);
}

.service-detail:last-child {
    border-bottom: none;
}

.service-detail h2 {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.service-detail h3 {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 0.3);
}

.service-detail p {
    margin-bottom: calc(var(--spacing-unit) * 1.2);
}

/* Contact Section */
.contact-section {
    margin-top: calc(var(--spacing-unit) * 2);
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--color-border);
}

.contact-section p {
    color: var(--color-text-secondary);
}

.contact-email {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
}

/* About Page */
.about-content p {
    max-width: var(--max-width);
}

.about-content .focus-areas {
    margin-top: calc(var(--spacing-unit) * 2);
    padding-top: calc(var(--spacing-unit) * 1.5);
    border-top: 1px solid var(--color-border);
}

/* Blog */
.blog-list {
    list-style: none;
}

.blog-list li {
    margin-bottom: calc(var(--spacing-unit) * 2);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--color-border);
}

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

.blog-list a {
    text-decoration: none;
}

.blog-list a:hover h2 {
    color: var(--color-accent);
}

.blog-list .post-date {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 0.3);
}

.blog-list .post-title {
    font-size: 1.3rem;
    margin-bottom: calc(var(--spacing-unit) * 0.3);
}

.blog-list .post-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Blog Post */
.post-header {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.post-header .post-date {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.post-header h1 {
    font-size: 2rem;
    max-width: var(--max-width);
}

.post-content {
    max-width: var(--max-width);
}

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

.post-content h2 {
    margin-top: calc(var(--spacing-unit) * 2);
    margin-bottom: var(--spacing-unit);
}

.post-content h3 {
    margin-top: calc(var(--spacing-unit) * 1.5);
}

.post-content ul, .post-content ol {
    margin-bottom: var(--spacing-unit);
    padding-left: 1.5rem;
    max-width: var(--max-width);
}

.post-content li {
    margin-bottom: calc(var(--spacing-unit) * 0.3);
}

.post-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--spacing-unit);
    margin: var(--spacing-unit) 0;
    color: var(--color-text-secondary);
    font-style: italic;
    max-width: var(--max-width);
}

.post-content pre {
    background: #f4f3ef;
    padding: var(--spacing-unit);
    border-radius: 3px;
    overflow-x: auto;
    margin-bottom: var(--spacing-unit);
    font-size: 0.85rem;
    line-height: 1.5;
    max-width: var(--max-width);
}

.post-content code {
    font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
    font-size: 0.9em;
}

.post-content p code {
    background: #f4f3ef;
    padding: 0.15em 0.4em;
    border-radius: 3px;
}

.post-footer {
    margin-top: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-border);
}

.post-footer p {
    color: var(--color-text-secondary);
}

/* Footer */
.site-footer {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 2);
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* Page Title */
.page-title {
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-bottom: calc(var(--spacing-unit) * 2);
    border-bottom: 1px solid var(--color-border);
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 16px;
    }

    .site-header {
        flex-direction: column;
        gap: var(--spacing-unit);
        padding: var(--spacing-unit);
    }

    .site-nav {
        gap: var(--spacing-unit);
    }

    main {
        padding: var(--spacing-unit) var(--spacing-unit) calc(var(--spacing-unit) * 3);
    }

    .hero {
        flex-direction: column-reverse;
        text-align: left;
    }

    .portrait-about {
        float: none;
        margin: 0 0 var(--spacing-unit) 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .site-footer {
        padding: var(--spacing-unit);
    }
}

@media (max-width: 480px) {
    .site-nav {
        flex-wrap: wrap;
        gap: calc(var(--spacing-unit) * 0.8);
    }

    .hero h1 {
        font-size: 1.5rem;
    }
}