/* livingit.de — Hugo-Theme CSS. Token-Set aus dem Design System (Light/Dark, drei Themenwelten). */

:root {
  --blue-900: #1E3A8A; --blue-950: #172C69; --blue-100: #E7EBF6;
  --bordeaux-900: #7F1D1D; --bordeaux-100: #F6E7E7;
  --cyan-500: #06B6D4; --cyan-600: #0891B2; --cyan-100: #E0F7FB;
  --violet-600: #7C3AED; --violet-100: #F1EAFD;
  --graphite-700: #374151; --graphite-900: #1F2937; --graphite-100: #EBEDF0;
  --orange-600: #EA580C; --orange-700: #C2410C; --orange-100: #FDEADD;
  --gray-0: #FFFFFF; --gray-50: #F9FAFB; --gray-100: #F3F4F6; --gray-200: #E5E7EB;
  --gray-300: #D1D5DB; --gray-400: #9CA3AF; --gray-500: #6B7280; --gray-600: #4B5563;
  --gray-700: #374151; --gray-800: #1F2937; --gray-900: #111827; --gray-950: #0B101B;

  --surface-page: var(--gray-0); --surface-alt: var(--gray-50); --surface-card: var(--gray-0);
  --surface-inverse: var(--gray-900);
  --text-primary: var(--gray-900); --text-secondary: var(--gray-600); --text-muted: var(--gray-500);
  --border-subtle: var(--gray-200); --border-strong: var(--gray-300);
  --header-bg: rgba(255,255,255,0.85); --header-bg-solid: rgba(255,255,255,0.97);
  --wordmark-living: var(--graphite-700); --wordmark-it: var(--cyan-500); --wordmark-de: var(--bordeaux-900);

  --accent: var(--blue-900); --accent-hover: var(--blue-950); --accent-2: var(--cyan-500);
  --accent-soft: var(--blue-100); --accent-soft-2: var(--cyan-100); --on-accent: #FFFFFF;
  --brand-gradient: linear-gradient(135deg, var(--blue-900) 0%, var(--cyan-500) 100%);

  --font-sans: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'IBM Plex Serif', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;

  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 16px; --radius-full: 999px;
  --shadow-card: 0 1px 2px rgba(17,24,39,0.05), 0 4px 14px rgba(17,24,39,0.06);
  --shadow-pop: 0 4px 8px rgba(17,24,39,0.08), 0 16px 40px rgba(17,24,39,0.14);
  --ease-out: cubic-bezier(0.2,0.8,0.2,1); --dur-fast: 120ms; --dur-med: 200ms;
  --container-max: 1120px; --container-prose: 680px; --gutter: 24px;
}

[data-mode="dark"] {
  --surface-page: var(--gray-950); --surface-alt: var(--gray-900); --surface-card: #161E2E;
  --surface-inverse: #05070D;
  --text-primary: #F3F4F6; --text-secondary: #C3CAD5; --text-muted: var(--gray-400);
  --border-subtle: #232B3A; --border-strong: #323C4E;
  --header-bg: rgba(11,16,27,0.8); --header-bg-solid: rgba(11,16,27,0.97);
  --wordmark-living: #E5E7EB; --wordmark-de: #D98E8E;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.4), 0 4px 14px rgba(0,0,0,0.35);
  --shadow-pop: 0 4px 8px rgba(0,0,0,0.45), 0 16px 40px rgba(0,0,0,0.5);
  --accent: var(--cyan-500); --accent-hover: #22D3EE; --accent-2: #7D9BEF;
  --accent-soft: #0E2E38; --accent-soft-2: #1D2846; --on-accent: var(--gray-950);
  --brand-gradient: linear-gradient(135deg, #7D9BEF 0%, var(--cyan-500) 100%);
}

[data-theme="politik"] {
  --accent: var(--blue-900); --accent-hover: var(--blue-950); --accent-2: var(--bordeaux-900);
  --accent-soft: var(--blue-100); --accent-soft-2: var(--bordeaux-100); --on-accent: #FFFFFF;
  --brand-gradient: linear-gradient(135deg, var(--blue-900) 0%, var(--bordeaux-900) 100%);
}
[data-theme="informatik"] {
  --accent: var(--cyan-600); --accent-hover: #0E7490; --accent-2: var(--violet-600);
  --accent-soft: var(--cyan-100); --accent-soft-2: var(--violet-100); --on-accent: #FFFFFF;
  --brand-gradient: linear-gradient(135deg, var(--cyan-500) 0%, var(--violet-600) 100%);
}
[data-theme="leben"] {
  --accent: var(--graphite-700); --accent-hover: var(--graphite-900); --accent-2: var(--orange-600);
  --accent-soft: var(--graphite-100); --accent-soft-2: var(--orange-100); --on-accent: #FFFFFF;
  --brand-gradient: linear-gradient(135deg, var(--graphite-700) 0%, var(--orange-600) 100%);
}
[data-mode="dark"] [data-theme="politik"], [data-mode="dark"] body[data-theme="politik"] {
  --accent: #8FA5EE; --accent-hover: #A9BAF3; --accent-2: #D98E8E;
  --accent-soft: #1D2846; --accent-soft-2: #3A2020; --on-accent: var(--gray-950);
  --brand-gradient: linear-gradient(135deg, #8FA5EE 0%, #D98E8E 100%);
}
[data-mode="dark"] [data-theme="informatik"], [data-mode="dark"] body[data-theme="informatik"] {
  --accent: var(--cyan-500); --accent-hover: #22D3EE; --accent-2: #A78BFA;
  --accent-soft: #0E2E38; --accent-soft-2: #251C42; --on-accent: var(--gray-950);
  --brand-gradient: linear-gradient(135deg, var(--cyan-500) 0%, #A78BFA 100%);
}
[data-mode="dark"] [data-theme="leben"], [data-mode="dark"] body[data-theme="leben"] {
  --accent: #F97316; --accent-hover: #FB923C; --accent-2: var(--gray-400);
  --accent-soft: #3A2313; --accent-soft-2: #262B33; --on-accent: var(--gray-950);
  --brand-gradient: linear-gradient(135deg, var(--gray-500) 0%, #F97316 100%);
}

/* ---------- Basics ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font-sans); background: var(--surface-page);
  color: var(--text-primary); font-size: 16px; line-height: 1.5;
  transition: background var(--dur-med) var(--ease-out), color var(--dur-med) var(--ease-out);
}
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter); }
.container-prose { max-width: var(--container-prose); margin: 0 auto; padding: 48px var(--gutter) 64px; }
a { color: var(--accent); }
.meta { font-family: var(--font-mono); font-size: 14px; color: var(--text-muted); }
.gradient-text { background: var(--brand-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.gradient-rule { height: 4px; width: 88px; background: var(--brand-gradient); border-radius: 2px; margin-bottom: 32px; }

/* ---------- Wordmark ---------- */
.wordmark { font-weight: 700; font-size: 22px; letter-spacing: -0.01em; white-space: nowrap; line-height: 1; }
.wm-living { color: var(--wordmark-living); }
.wm-it { color: var(--wordmark-it); }
.wm-de { color: var(--wordmark-de); }
.wordmark-inverse .wm-living { color: #E5E7EB; }
.wordmark-inverse .wm-de { color: #D98E8E; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 10; background: var(--header-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
}
.header-inner { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { text-decoration: none; display: flex; align-items: center; gap: 10px; }
.header-nav { display: flex; align-items: center; gap: 16px; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  font-size: 14px; font-weight: 500; color: var(--text-secondary); text-decoration: none;
  padding: 7px 12px; border-radius: var(--radius-md);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.nav-link:hover, .nav-link.is-active { background: var(--accent-soft); color: var(--accent); }
.nav-link.is-active { font-weight: 600; }
.header-tools { display: flex; align-items: center; gap: 12px; }
.lang-switch {
  display: inline-flex; gap: 2px; padding: 2px; border: 1px solid var(--border-strong);
  border-radius: var(--radius-full); background: var(--surface-card);
}
.lang {
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em; padding: 4px 10px;
  border-radius: var(--radius-full); text-decoration: none; color: var(--text-secondary);
}
.lang.is-active { background: var(--accent); color: var(--on-accent); }
.mode-toggle {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--border-strong); border-radius: var(--radius-full);
  color: var(--text-secondary); cursor: pointer;
}
.icon-sun { display: none; }
[data-mode="dark"] .icon-sun { display: block; }
[data-mode="dark"] .icon-moon { display: none; }
.burger {
  display: none; width: 44px; height: 44px; align-items: center; justify-content: center;
  background: transparent; border: none; border-radius: var(--radius-md);
  color: var(--text-primary); cursor: pointer;
}

/* ---------- Buttons & Badges ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sans); font-weight: 600; font-size: 16px;
  padding: 9px 20px; border-radius: var(--radius-md); border: 1px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out);
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-sm { font-size: 14px; padding: 6px 14px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 3px 10px; border-radius: var(--radius-full);
  background: var(--accent-soft); color: var(--accent);
}
.badge-solid { background: var(--accent); color: var(--on-accent); }

/* ---------- Hero & Sections ---------- */
.hero { border-bottom: 1px solid var(--border-subtle); padding: 80px 0; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.hero-title { margin: 0; font-size: 49px; line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; max-width: 720px; }
.hero-copy { font-size: 18px; color: var(--text-secondary); max-width: 560px; margin: 24px 0 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.section-alt { background: var(--surface-alt); padding: 64px 0; }
.section-head-row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 32px; }
.section-head-row h2 { margin: 0; font-size: 31px; letter-spacing: -0.02em; }
#about { padding: 64px 0; }

/* ---------- Post cards ---------- */
.post-grid { display: grid; gap: 24px; }
.post-grid-3 { grid-template-columns: repeat(3, 1fr); }
.post-grid-2 { grid-template-columns: repeat(2, 1fr); }
.post-card {
  display: flex; flex-direction: column; background: var(--surface-card);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); overflow: hidden; text-decoration: none; color: inherit;
  transition: box-shadow var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
}
.post-card:hover { box-shadow: var(--shadow-pop); transform: translateY(-2px); }
.topic-bar { display: block; height: 4px; background: var(--brand-gradient); }
.post-card-body { display: flex; flex-direction: column; gap: 12px; padding: 24px; }
.post-card-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 4px; }
.post-card-title { font-size: 20px; font-weight: 700; line-height: 1.3; color: var(--text-primary); }
.post-card-excerpt { font-size: 16px; color: var(--text-secondary); }
.post-card-more { font-size: 14px; font-weight: 600; color: var(--accent); }

/* ---------- Topic list page ---------- */
.section-hero-topic { background: var(--accent-soft); border-bottom: 4px solid transparent; border-image: var(--brand-gradient) 1; padding: 48px 0; }
.topic-title { margin: 16px 0 8px; font-size: 39px; line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; }
.topic-claim { margin: 0; font-family: var(--font-mono); font-size: 14px; color: var(--accent-2); }
.lead-post { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center; padding-top: 48px; padding-bottom: 32px; }
.lead-post h2 { margin: 12px 0; font-size: 31px; letter-spacing: -0.02em; }
.lead-post h2 a { color: var(--text-primary); text-decoration: none; }
.lead-post p { color: var(--text-secondary); font-size: 18px; margin: 0 0 16px; }
.lead-visual { height: 220px; border-radius: var(--radius-lg); background: var(--brand-gradient); }
.more-title { margin: 0 0 24px; font-size: 20px; font-weight: 600; }

/* ---------- Article ---------- */
.back-link { margin-left: -12px; margin-bottom: 24px; }
.article-title { margin: 16px 0 24px; font-size: 39px; line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; }
.article-body { font-family: var(--font-serif); font-size: 18px; line-height: 1.7; }
.article-body h2, .article-body h3 { font-family: var(--font-sans); letter-spacing: -0.01em; margin-top: 40px; }
.article-body pre {
  font-family: var(--font-mono); font-size: 14px; line-height: 1.6;
  background: var(--surface-alt); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md); padding: 16px; overflow-x: auto;
}
.article-body code { font-family: var(--font-mono); font-size: 0.9em; background: var(--surface-alt); padding: 1px 5px; border-radius: 4px; }
.article-body pre code { background: none; padding: 0; }
.article-body blockquote {
  margin: 24px 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--accent);
  color: var(--text-secondary); font-style: italic;
}
.article-body img { max-width: 100%; border-radius: var(--radius-lg); }
.article-author { border-top: 1px solid var(--border-subtle); margin-top: 40px; padding-top: 32px; }

/* ---------- Author ---------- */
.about-grid { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
.author-card { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; }
.avatar {
  width: 88px; height: 88px; flex: none; border-radius: var(--radius-full);
  background: var(--brand-gradient); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 25px; font-weight: 700; letter-spacing: 0.02em;
}
.author-name { font-size: 20px; font-weight: 700; }
.author-bio { color: var(--text-secondary); max-width: 560px; margin: 8px 0; }
.author-links { display: flex; gap: 16px; }
.author-links a { font-size: 14px; font-weight: 600; color: var(--accent); text-decoration: none; }
.topic-links { display: flex; flex-direction: column; gap: 8px; }
.topic-link {
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-soft); padding: 12px 14px;
  border-radius: var(--radius-full); text-decoration: none; text-align: center;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--surface-inverse); color: #fff; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-top: 48px; padding-bottom: 48px; }
.footer-brand p { font-size: 14px; color: var(--gray-400); max-width: 260px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 {
  margin: 0; font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gray-500);
}
.footer-col a { font-size: 14px; color: var(--gray-300); text-decoration: none; }
.footer-col a:hover { text-decoration: underline; }
.footer-legal { border-top: 1px solid rgba(255,255,255,0.12); }
.footer-legal .container { padding-top: 16px; padding-bottom: 16px; font-family: var(--font-mono); font-size: 12px; color: var(--gray-500); }

/* ---------- Mobile (≤768px) ---------- */
@media (max-width: 768px) {
  .burger { display: flex; }
  .header-nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--header-bg-solid); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-subtle); box-shadow: var(--shadow-pop);
    padding: 8px 12px 16px; flex-direction: column; align-items: stretch;
  }
  .header-nav.is-open { display: flex; }
  .nav { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { font-size: 16px; padding: 12px 14px; }
  .header-tools { padding: 12px 14px 0; }
  .hero { padding: 48px 0; }
  .hero-title { font-size: 39px; }
  .post-grid-3, .post-grid-2, .lead-post, .about-grid { grid-template-columns: 1fr; }
  .lead-visual { order: -1; height: 150px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .topic-title, .article-title { font-size: 31px; }
}