/* ─── akustikfuchs.de — Stylesheet v2 ───────────────────────────────────────── */
/* Light, warm, polished. Mobile-first. Professional content site. */

/* ─── Custom Properties ──────────────────────────────────────────────────── */
:root {
  --color-accent: #0D7377;
  --color-accent-dark: #0A5C5F;
  --color-accent-light: #E8F5F5;
  --color-accent-glow: rgba(13, 115, 119, 0.12);

  --color-text: #1C1C1A;
  --color-text-secondary: #52524E;
  --color-text-muted: #8A8A86;

  --color-bg: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-border: #E8E6E1;
  --color-border-light: #F0EDE8;

  --color-warm-gray-50: #FAF9F7;
  --color-warm-gray-100: #F3F1EE;
  --color-warm-gray-200: #E8E6E1;
  --color-warm-gray-800: #2C2C28;
  --color-warm-gray-900: #1C1C1A;

  --shadow-sm: 0 1px 3px rgba(28, 28, 26, 0.04), 0 1px 2px rgba(28, 28, 26, 0.03);
  --shadow-md: 0 4px 12px rgba(28, 28, 26, 0.06), 0 2px 4px rgba(28, 28, 26, 0.04);
  --shadow-lg: 0 8px 24px rgba(28, 28, 26, 0.08), 0 4px 8px rgba(28, 28, 26, 0.04);
  --shadow-accent: 0 8px 24px rgba(13, 115, 119, 0.12), 0 4px 8px rgba(13, 115, 119, 0.06);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-quart: cubic-bezier(0.165, 0.84, 0.44, 1);

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-wrap: pretty;
}

/* Grain texture overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.25s var(--ease-out);
}

a:hover {
  color: var(--color-accent-dark);
}

/* ─── Container ───────────────────────────────────────────────────────────── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ─── Reading Progress Bar ───────────────────────────────────────────────── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #14A3A8);
  z-index: 200;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ─── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.75rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

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

.logo-icon {
  font-size: 1.35rem;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.625rem;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s var(--ease-out);
}

.menu-toggle:hover {
  background: var(--color-warm-gray-100);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.25s var(--ease-out-quart), opacity 0.25s var(--ease-out);
}

.nav-open .menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}
.nav-open .menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: none;
  position: absolute;
  top: 3.75rem;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.25rem 1.25rem;
  transform: translateY(-8px);
  opacity: 0;
  transition: transform 0.3s var(--ease-out-quart), opacity 0.25s var(--ease-out);
}

.nav-open .site-nav {
  display: block;
  transform: translateY(0);
  opacity: 1;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out);
  position: relative;
}

.nav-links a:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
  text-decoration: none;
}

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

@media (min-width: 900px) {
  .menu-toggle { display: none; }

  .site-nav {
    display: block;
    position: static;
    border: none;
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    transform: none;
    opacity: 1;
  }

  .nav-links {
    flex-direction: row;
    gap: 0.25rem;
  }

  .nav-links a {
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
    min-height: auto;
    position: relative;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0.75rem;
    right: 0.75rem;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform 0.25s var(--ease-out-quart);
  }

  .nav-links a:hover::after,
  .nav-links a.active::after {
    transform: scaleX(1);
  }

  .nav-links a:hover {
    background: transparent;
  }
}

/* ─── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: 5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #0D7377 0%, #0A5C5F 40%, #0E6B6E 70%, #14A3A8 100%);
  border-bottom: none;
}

/* Sound wave SVG pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: url("data:image/svg+xml,%3Csvg width='800' height='400' viewBox='0 0 800 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23ffffff' stroke-width='2'%3E%3Cpath d='M0 200 Q50 120 100 200 Q150 280 200 200 Q250 120 300 200 Q350 280 400 200 Q450 120 500 200 Q550 280 600 200 Q650 120 700 200 Q750 280 800 200'/%3E%3Cpath d='M0 180 Q60 130 120 180 Q180 230 240 180 Q300 130 360 180 Q420 230 480 180 Q540 130 600 180 Q660 230 720 180 Q780 130 800 180' opacity='0.6'/%3E%3Cpath d='M0 220 Q40 170 80 220 Q120 270 160 220 Q200 170 240 220 Q280 270 320 220 Q360 170 400 220 Q440 270 480 220 Q520 170 560 220 Q600 270 640 220 Q680 170 720 220 Q760 270 800 220' opacity='0.4'/%3E%3Cpath d='M0 160 Q70 110 140 160 Q210 210 280 160 Q350 110 420 160 Q490 210 560 160 Q630 110 700 160 Q770 210 800 160' opacity='0.3'/%3E%3Cpath d='M0 240 Q70 290 140 240 Q210 190 280 240 Q350 290 420 240 Q490 190 560 240 Q630 290 700 240 Q770 190 800 240' opacity='0.3'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 800px 400px;
  background-position: center;
  background-repeat: repeat-x;
  animation: waveScroll 20s linear infinite;
}

@keyframes waveScroll {
  from { background-position: 0 center; }
  to { background-position: 800px center; }
}

/* Gradient mesh circles */
.hero::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #ffffff;
  max-width: 640px;
  text-wrap: balance;
}

.hero h1 .accent {
  color: #B8F0F2;
}

.hero-sub {
  margin-top: 1rem;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 540px;
  line-height: 1.65;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
}

.hero-badge .badge-dot {
  width: 6px;
  height: 6px;
  background: #B8F0F2;
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.3); }
}

@media (min-width: 640px) {
  .hero {
    padding: 6rem 0 5.5rem;
  }
  .hero h1 {
    font-size: 2.75rem;
  }
  .hero-sub {
    font-size: 1.15rem;
  }
}

@media (min-width: 960px) {
  .hero h1 {
    font-size: 3.25rem;
  }
}

/* ─── Category Hero ───────────────────────────────────────────────────────── */
.category-hero {
  padding: 3.5rem 0 3rem;
  background: linear-gradient(160deg, #0D7377 0%, #0A5C5F 60%, #14A3A8 100%);
  border-bottom: none;
  color: #fff;
}

.category-hero .breadcrumb {
  color: rgba(255, 255, 255, 0.6);
}

.category-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
}

.category-hero .breadcrumb a:hover {
  color: #fff;
}

.category-hero .breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}

.category-hero h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-top: 0.5rem;
  text-wrap: balance;
}

.category-desc {
  margin-top: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  line-height: 1.65;
}

.category-articles {
  padding: 3rem 0 4rem;
  background: var(--color-warm-gray-50);
}

@media (min-width: 640px) {
  .category-hero h1 {
    font-size: 2.5rem;
  }
}

/* ─── Categories Grid ─────────────────────────────────────────────────────── */
.categories-section {
  padding: 3.5rem 0 2rem;
  background: var(--color-warm-gray-50);
}

.categories-section h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.cat-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: transform 0.3s var(--ease-out-quart), box-shadow 0.3s var(--ease-out-quart);
}

.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-accent);
  text-decoration: none;
}

.cat-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-warm-gray-100);
}

.cat-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out-quart);
}

.cat-card:hover .cat-img img {
  transform: scale(1.05);
}

.cat-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.cat-card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: 0.35rem;
}

.cat-card .cat-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.cat-count {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* ─── Card Grid ───────────────────────────────────────────────────────────── */
.latest-section {
  padding: 3.5rem 0 4rem;
  background: var(--color-bg);
}

.latest-section h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: transform 0.3s var(--ease-out-quart), box-shadow 0.3s var(--ease-out-quart);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card-link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.card-link:hover {
  text-decoration: none;
}

.card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-warm-gray-100);
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-out-quart);
}

.card:hover .card-img img {
  transform: scale(1.05);
}

.card-body {
  padding: 1.5rem 1.5rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
  width: fit-content;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  text-wrap: balance;
}

.card-excerpt {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}

.card-meta {
  margin-top: auto;
  padding-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-arrow {
  display: flex;
  align-items: center;
  color: var(--color-accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out-quart);
  font-size: 1rem;
}

.card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ─── Scroll Reveal Animation ────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out-quart), transform 0.7s var(--ease-out-quart);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fallback: if JS fails, still show content after a delay */
@supports not (animation: none) {
  .reveal { opacity: 1; transform: none; }
}

/* Stagger cards */
.card-grid .card.reveal:nth-child(2) { transition-delay: 0.08s; }
.card-grid .card.reveal:nth-child(3) { transition-delay: 0.16s; }
.card-grid .card.reveal:nth-child(4) { transition-delay: 0.08s; }
.card-grid .card.reveal:nth-child(5) { transition-delay: 0.16s; }
.card-grid .card.reveal:nth-child(6) { transition-delay: 0.24s; }
.card-grid .card.reveal:nth-child(7) { transition-delay: 0.08s; }
.card-grid .card.reveal:nth-child(8) { transition-delay: 0.16s; }
.card-grid .card.reveal:nth-child(9) { transition-delay: 0.24s; }

.cat-grid .cat-card.reveal:nth-child(2) { transition-delay: 0.06s; }
.cat-grid .cat-card.reveal:nth-child(3) { transition-delay: 0.12s; }
.cat-grid .cat-card.reveal:nth-child(4) { transition-delay: 0.18s; }
.cat-grid .cat-card.reveal:nth-child(5) { transition-delay: 0.24s; }
.cat-grid .cat-card.reveal:nth-child(6) { transition-delay: 0.30s; }
.cat-grid .cat-card.reveal:nth-child(7) { transition-delay: 0.36s; }

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .card, .cat-card {
    transition: box-shadow 0.2s var(--ease-out), border-color 0.2s var(--ease-out) !important;
    transform: none !important;
  }
  .card-arrow {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .reading-progress {
    transition: none;
  }
}

/* ─── Breadcrumb ──────────────────────────────────────────────────────────── */
.breadcrumb {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding: 1.25rem 0 0;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color 0.2s var(--ease-out);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .sep {
  margin: 0 0.4rem;
  color: var(--color-border);
}

/* ─── Article ─────────────────────────────────────────────────────────────── */
.article-page {
  padding-bottom: 3rem;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 720px;
  margin: 0 auto;
}

@media (min-width: 1100px) {
  .article-layout {
    grid-template-columns: 1fr 220px;
    max-width: 960px;
  }
}

.article {
  max-width: 720px;
  margin: 0 auto;
  min-width: 0;
}

.article-header {
  padding: 1.75rem 0 1.25rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1.75rem;
}

.article-hero-img {
  margin-top: 1.25rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--color-warm-gray-100);
}

.article-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-category {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

.article-header h1 {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-wrap: balance;
}

@media (min-width: 640px) {
  .article-header h1 {
    font-size: 2.25rem;
  }
}

.article-meta {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.meta-sep {
  margin: 0 0.5rem;
}

/* ─── Table of Contents ───────────────────────────────────────────────────── */
.toc {
  background: var(--color-warm-gray-50);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.25rem;
}

.toc-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: 0.85rem;
}

.toc-list {
  list-style: none;
  counter-reset: toc;
}

.toc-list li {
  counter-increment: toc;
  margin-bottom: 0.35rem;
}

.toc-list li::before {
  content: counter(toc) ".";
  color: var(--color-text-muted);
  font-size: 0.82rem;
  margin-right: 0.5rem;
  font-weight: 500;
}

.toc-list li a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color 0.2s var(--ease-out);
}

.toc-list li a:hover {
  color: var(--color-accent);
}

.toc-list li.toc-sub {
  padding-left: 1.5rem;
  font-size: 0.85rem;
}

/* Sticky sidebar TOC on wide screens */
@media (min-width: 1100px) {
  .toc-sidebar {
    position: sticky;
    top: 5rem;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
  }

  .toc-sidebar .toc {
    margin-bottom: 0;
    font-size: 0.85rem;
  }
}

/* ─── Article Content ─────────────────────────────────────────────────────── */
.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #2A2A28;
}

.article-content h1 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  margin: 2.75rem 0 1rem;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 3rem 0 0.85rem;
  color: var(--color-text);
  line-height: 1.25;
  letter-spacing: -0.02em;
  padding-top: 1rem;
  border-top: 2px solid var(--color-accent-light);
  text-wrap: balance;
}

.article-content h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2.25rem 0 0.6rem;
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.article-content h4 {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
  color: var(--color-warm-gray-800);
}

.article-content p {
  margin-bottom: 1.35rem;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.35rem 1.25rem;
}

.article-content li {
  margin-bottom: 0.4rem;
}

.article-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 1.75rem 0;
  background: var(--color-warm-gray-50);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-content blockquote p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.article-content code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.88em;
  background: var(--color-warm-gray-100);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.article-content pre {
  background: var(--color-warm-gray-900);
  color: #E8E8E6;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.75rem 0;
  font-size: 0.88rem;
  line-height: 1.55;
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.article-content strong {
  font-weight: 600;
  color: var(--color-text);
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 1.75rem 0;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 1.75rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.article-content th,
.article-content td {
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.article-content th {
  font-weight: 600;
  background: var(--color-warm-gray-100);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
}

.article-content tbody tr:nth-child(even) {
  background: var(--color-warm-gray-50);
}

.article-content tbody tr:hover {
  background: var(--color-accent-light);
}

.article-content tbody tr:last-child td {
  border-bottom: none;
}

/* Internal link placeholders */
.article-content a[href*="INTERNER LINK"],
.article-content a[href*="interner-link"] {
  color: var(--color-accent);
  border-bottom: 1px dashed var(--color-accent);
}

/* ─── Related Articles ────────────────────────────────────────────────────── */
.related {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border);
  max-width: 100%;
}

.related h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

/* ─── Newsletter Section ─────────────────────────────────────────────────── */
.newsletter-section {
  background: linear-gradient(160deg, #0D7377 0%, #0A5C5F 50%, #0E6B6E 100%);
  border-top: none;
  padding: 4.5rem 0;
  position: relative;
  overflow: hidden;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.newsletter-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.newsletter-inner h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 0.6rem;
}

.newsletter-inner p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  font-size: 1rem;
  line-height: 1.6;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  max-width: 440px;
  margin: 0 auto;
}

.newsletter-form input[type="email"] {
  flex: 1;
  padding: 0.8rem 1.15rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: var(--font-body);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  min-height: 48px;
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.newsletter-form input[type="email"]::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.newsletter-form button {
  padding: 0.8rem 1.75rem;
  background: #ffffff;
  color: var(--color-accent-dark);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font-body);
  cursor: pointer;
  min-height: 48px;
  white-space: nowrap;
  transition: background 0.25s var(--ease-out), transform 0.2s var(--ease-out-quart), box-shadow 0.2s var(--ease-out);
}

.newsletter-form button:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

@media (max-width: 480px) {
  .newsletter-form {
    flex-direction: column;
  }
}

/* ─── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-warm-gray-900);
  color: #C8C8C4;
  padding: 4rem 0 0;
  font-size: 0.88rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-inner {
    grid-template-columns: 1.4fr 2fr;
  }
}

.footer-brand .logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  letter-spacing: -0.01em;
}

.footer-brand p {
  margin-top: 0.75rem;
  color: #9A9A96;
  line-height: 1.65;
  max-width: 300px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  color: #ADADAA;
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
  transition: color 0.2s var(--ease-out), padding-left 0.2s var(--ease-out);
}

.footer-col a:hover {
  color: #fff;
  text-decoration: none;
  padding-left: 0.25rem;
}

.footer-bottom {
  border-top: 1px solid #333330;
  padding: 1.75rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: #6A6A66;
}

/* ─── Back to Top Button ─────────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s var(--ease-out), visibility 0.3s var(--ease-out), transform 0.3s var(--ease-out-quart), background 0.2s var(--ease-out);
  z-index: 50;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-accent);
}

/* ─── Print ───────────────────────────────────────────────────────────────── */
@media print {
  .site-header,
  .site-footer,
  .toc,
  .related,
  .breadcrumb,
  .newsletter-section,
  .back-to-top,
  .reading-progress {
    display: none;
  }

  body {
    font-size: 11pt;
    color: #000;
    background: #fff;
  }

  body::after {
    display: none;
  }

  .article-content {
    max-width: 100%;
  }

  a { color: #000; }
  a::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  a[href^="#"]::after { content: ""; }
  a[href^="/"]::after { content: " (akustikfuchs.de" attr(href) ")"; }
}

/* ─── Comments ───────────────────────────────────────────────────────────── */
.comments-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.comments-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.comments-empty {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.comment {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-warm-gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.comment-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.comment-body {
  flex: 1;
  min-width: 0;
}

.comment-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
}

.comment-name {
  font-size: 0.9rem;
  color: var(--color-text);
}

.comment-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.comment-text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Comment Form */
.comment-form-wrap {
  margin-top: 1.5rem;
  padding: 1.75rem;
  background: var(--color-warm-gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.comment-form-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.comment-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

@media (max-width: 600px) {
  .comment-form-row {
    grid-template-columns: 1fr;
  }
}

.comment-form-field {
  margin-bottom: 1rem;
}

.comment-form-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.35rem;
}

.field-hint {
  font-weight: 400;
  color: var(--color-text-muted);
}

.comment-form-field input,
.comment-form-field textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.comment-form-field input:focus,
.comment-form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.comment-form-field textarea {
  resize: vertical;
  min-height: 100px;
}

.comment-form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.comment-form-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
}

.comment-submit {
  padding: 0.65rem 1.5rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
}

.comment-submit:hover {
  background: var(--color-accent-dark);
}

.comment-submit:active {
  transform: scale(0.98);
}

.comment-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.comment-form-success {
  text-align: center;
  padding: 1.5rem;
  color: var(--color-accent);
  font-weight: 500;
}