/* ============================================================
   klipArt media — styles.css
   klipartmedia.com
   ============================================================
   Struktur:
   1. Google Fonts Import
   2. CSS Custom Properties (Light + Dark Mode)
   3. Reset & Base
   4. Typografie
   5. Layout & Grid
   6. Header & Navigation
   7. Hero
   8. Kacheln (Index-Grid)
   9. Platzhalter-Seiten
  10. Buch-Landingpage
  11. Über mich
  12. Kontakt
  13. Footer
  14. Utilities
  15. Responsive (Tablet → Desktop)
   ============================================================ */


/* ============================================================
   1. SCHRIFTEN — System Font Stack (kein Google Fonts)
      Mac/iOS: Helvetica Neue / San Francisco
      Windows: Arial / Segoe UI
      Android: Roboto (built-in)
      Kein externer Request — maximale Ladegeschwindigkeit
   ============================================================ */
/* Kein @import notwendig — alles systemseitig verfügbar */


/* ============================================================
   2. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Farben — Light Mode (Standard) */
  --color-bg:           #f8f8f6;
  --color-bg-subtle:    #f0f0ee;
  --color-surface:      #ffffff;
  --color-border:       #e2e2de;
  --color-text:         #111110;
  --color-text-muted:   #6b6b67;
  --color-accent:       #e3000f;
  --color-accent-hover: #b8000c;
  --color-accent-soft:  #fdf0f1;

  /* Typografie — System Font Stack */
  --font-display: 'Helvetica Neue', 'Arial Nova', Arial, sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  2rem;
  --text-4xl:  2.75rem;
  --text-5xl:  3.75rem;

  --weight-light:   300;
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semi:    600;
  --weight-bold:    700;
  --weight-black:   800;

  --leading-tight:  1.15;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* Abstände */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --max-width:        1200px;
  --max-width-text:   680px;
  --container-pad:    var(--space-6);

  /* Radien */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Schatten */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 12px 32px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.04);

  /* Übergänge */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  /* Header */
  --header-height: 64px;
}

/* Dark Mode — automatisch über Systemeinstellung */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:           #111110;
    --color-bg-subtle:    #1a1a19;
    --color-surface:      #1f1f1e;
    --color-border:       #2e2e2c;
    --color-text:         #f0f0ee;
    --color-text-muted:   #9a9a95;
    --color-accent:       #e3000f;
    --color-accent-hover: #ff1a26;
    --color-accent-soft:  #2a0a0b;

    --shadow-sm:  0 1px 3px rgba(0,0,0,0.30);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.40);
    --shadow-lg:  0 12px 32px rgba(0,0,0,0.50);
  }
}


/* ============================================================
   3. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}


/* ============================================================
   4. TYPOGRAFIE
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 { font-size: var(--text-4xl); font-weight: var(--weight-black); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl);  }
h5 { font-size: var(--text-lg);  }
h6 { font-size: var(--text-base); }

p {
  line-height: var(--leading-loose);
  color: var(--color-text);
}

p + p {
  margin-top: var(--space-4);
}

strong { font-weight: var(--weight-medium); }

em { font-style: italic; }

.text-muted {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.text-accent {
  color: var(--color-accent);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}


/* ============================================================
   5. LAYOUT & CONTAINER
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--text {
  max-width: var(--max-width-text);
}

.section {
  padding-block: var(--space-16);
}

.section--sm {
  padding-block: var(--space-10);
}

.section--lg {
  padding-block: var(--space-24);
}

.divider {
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin-block: 0;
}


/* ============================================================
   6. HEADER & NAVIGATION
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal);

  /* Glassmorphism-Effekt — subtil */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: color-mix(in srgb, var(--color-bg) 90%, transparent);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  flex-direction: column;
  text-decoration: none;
  line-height: 1;
}

.site-logo__wordmark {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--weight-black);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.site-logo__wordmark .accent-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background-color: var(--color-accent);
  border-radius: 50%;
  margin-right: 1px;
  vertical-align: super;
  position: relative;
  top: -2px;
}

.site-logo__sub {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.25em;
  text-transform: lowercase;
  color: var(--color-text-muted);
  align-self: flex-end;
  margin-right: 2px;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  letter-spacing: 0.01em;
}

.site-nav__link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-subtle);
}

.site-nav__link--active {
  color: var(--color-text);
}

.site-nav__link--cta {
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  padding: var(--space-2) var(--space-4);
}

.site-nav__link--cta:hover {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* Mobile Menu Toggle (nur auf kleinen Screens sichtbar) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background-color: var(--color-bg-subtle);
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}


/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  padding-block: var(--space-20) var(--space-16);
  text-align: center;
}

.hero__eyebrow {
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  font-weight: var(--weight-black);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  max-width: 820px;
  margin-inline: auto;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: var(--leading-loose);
  font-weight: var(--weight-light);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}


/* ============================================================
   8. KACHELN — INDEX GRID
   ============================================================ */
.tiles-section {
  padding-block: var(--space-12) var(--space-20);
}

.tiles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  min-height: 200px;
  overflow: hidden;
  text-decoration: none;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

.tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

/* Hervorgehobene Kachel (Buch) — nimmt volle Breite */
.tile--featured {
  grid-column: 1 / -1;
  min-height: 260px;
  background-color: #111110;
  border-color: #111110;
}

.tile--featured .tile__title,
.tile--featured .tile__desc {
  color: #f0f0ee;
}

.tile--featured .tile__tag {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* Platzhalter-Kacheln */
.tile--placeholder {
  opacity: 0.55;
  cursor: default;
}

.tile__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  width: fit-content;
}

.tile__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: var(--leading-snug);
}

.tile--featured .tile__title {
  font-size: var(--text-2xl);
}

.tile__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  font-weight: var(--weight-light);
}

.tile__arrow {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.tile:hover .tile__arrow {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.tile--featured .tile__arrow {
  border-color: rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.6);
}

.tile--featured:hover .tile__arrow {
  border-color: var(--color-accent);
  background-color: var(--color-accent);
  color: #ffffff;
}

/* "Bald verfügbar" Badge */
.tile__soon {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}


/* ============================================================
   9. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  letter-spacing: 0.02em;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #ffffff;
  border: 1.5px solid var(--color-accent);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(227, 0, 15, 0.3);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-text);
  background-color: var(--color-bg-subtle);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1.5px solid transparent;
  padding-inline: var(--space-3);
}

.btn--ghost:hover {
  color: var(--color-text);
  background-color: var(--color-bg-subtle);
}

.btn--lg {
  font-size: var(--text-base);
  padding: var(--space-4) var(--space-8);
}


/* ============================================================
   10. BUCH-LANDINGPAGE
   ============================================================ */
.book-hero {
  padding-block: var(--space-16);
}

.book-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

.book-cover {
  max-width: 280px;
  margin-inline: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.book-hero__title {
  font-size: clamp(var(--text-2xl), 5vw, var(--text-4xl));
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
}

.book-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: var(--weight-light);
  margin-bottom: var(--space-6);
  line-height: var(--leading-loose);
}

.book-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.badge {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.book-price {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-black);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.book-price__sub {
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

/* Feature-Liste */
.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.feature-item__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background-color: var(--color-accent-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: var(--text-lg);
}

.feature-item__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-semi);
  margin-bottom: var(--space-1);
}

.feature-item__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* Feedback/Newsletter CTA Block */
.cta-block {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-8);
  text-align: center;
}

.cta-block--accent {
  background-color: var(--color-text);
  border-color: var(--color-text);
}

.cta-block--accent .cta-block__title,
.cta-block--accent .cta-block__desc {
  color: #f0f0ee;
}

.cta-block--accent .cta-block__desc {
  opacity: 0.7;
}

.cta-block__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.cta-block__desc {
  color: var(--color-text-muted);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.cta-block__link {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}


/* ============================================================
   11. BUCH-KARTE (buecher/index.html)
   ============================================================ */
.book-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}

.book-card__cover-wrap {
  display: flex;
  justify-content: center;
}

.book-card__cover-placeholder {
  width: 200px;
  aspect-ratio: 2 / 3;
  background-color: var(--color-bg-subtle);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.book-card__cover-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-snug);
}

.book-card__title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
}

.book-card__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: var(--weight-light);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-6);
  max-width: 560px;
}

.book-card__details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.book-card__price {
  margin-bottom: var(--space-2);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.book-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

@media (min-width: 640px) {
  .book-card {
    grid-template-columns: 200px 1fr;
    gap: var(--space-12);
  }

  .book-card__cover-wrap {
    justify-content: flex-start;
  }
}

@media (min-width: 768px) {
  .book-card {
    grid-template-columns: 240px 1fr;
    gap: var(--space-16);
  }

  .book-card__cover-placeholder {
    width: 240px;
  }
}


/* ── Zielgruppe + Feedback nebeneinander ── */
.zielgruppe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: start;
}

.feedback-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.feedback-box h3 {
  line-height: var(--leading-snug);
}

.feedback-box--dark {
  background-color: #1a1a19;
  border-color: #2e2e2c;
}

.feedback-box--dark .eyebrow {
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .zielgruppe-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
  }
}


/* ============================================================
   12. ÜBER MICH
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

.about-portrait {
  max-width: 240px;
  border-radius: var(--radius-lg);
  margin-inline: auto;
  box-shadow: var(--shadow-md);
}

.about-content h1 {
  margin-bottom: var(--space-4);
}

.about-content .lead {
  font-size: var(--text-lg);
  font-weight: var(--weight-light);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  line-height: var(--leading-loose);
}


/* ============================================================
   12. KONTAKT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: start;
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-info__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  min-width: 100px;
}

.contact-info__value a {
  color: var(--color-accent);
  transition: opacity var(--transition-fast);
}

.contact-info__value a:hover {
  opacity: 0.75;
}

/* Kontaktformular */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.form-input,
.form-textarea {
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
  width: 100%;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: var(--leading-normal);
}


/* ============================================================
   13. FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
  margin-top: auto;
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  justify-content: center;
}

.site-footer__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast);
}

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

.site-footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

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


/* ============================================================
   12b. ÜBER MICH — Skills Grid
   ============================================================ */
.about-skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.about-skill {
  display: block;
  padding: var(--space-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

.about-skill:hover {
  transform: translateY(-3px) rotate(0.4deg);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.about-skill__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
}

.about-skill__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  font-weight: var(--weight-light);
}

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

@media (min-width: 1024px) {
  .about-skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}


/* ── Globaler Kachel-Hover (Zoom + leichter Dreh) ── */
.tile:not(.tile--placeholder):hover {
  transform: translateY(-3px) rotate(0.4deg);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}


/* ── Button Text zentriert, kein Pfeil-Versatz ── */
.btn {
  justify-content: center;
  text-align: center;
}


/* ============================================================
   12c. LEGAL CONTENT (Impressum, Datenschutz)
   ============================================================ */
.legal-content h2 {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  font-weight: var(--weight-light);
}

.legal-content a {
  color: var(--color-accent);
  transition: opacity var(--transition-fast);
}

.legal-content a:hover {
  opacity: 0.75;
}


/* ============================================================
   13. PLATZHALTER-SEITEN (Video, Schnitt, 3D, Livestream)
   ============================================================ */
.placeholder-page {
  min-height: calc(100vh - var(--header-height) - 80px);
  display: flex;
  align-items: center;
}

.placeholder-page__inner {
  max-width: 560px;
  padding-block: var(--space-20);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

.placeholder-page__eyebrow {
  margin-bottom: var(--space-1);
}

.placeholder-page__title {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.placeholder-page__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: var(--weight-light);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
}

.placeholder-page__inner .btn {
  margin-top: var(--space-2);
}


/* ============================================================
   14. BREADCRUMB
   ============================================================ */
.breadcrumb-nav {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  list-style: none;
}

.breadcrumb li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* ── Buch-Cover Placeholder ── */
.book-cover-placeholder {
  width: 220px;
  aspect-ratio: 2 / 3;
  background-color: var(--color-bg-subtle);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  margin-inline: auto;
}

.book-cover-placeholder__text {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
  line-height: var(--leading-snug);
}

/* ── Autoren-Foto Placeholder ── */
.about-portrait-placeholder {
  width: 100%;
  height: 360px;
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-subtle);
  border: 1px dashed var(--color-border);
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.about-float-wrap {
  width: 100%;
  text-align: justify;
}

@media (min-width: 768px) {
  .about-portrait-placeholder {
    float: left;
    width: 280px;
    height: 420px;
    margin-top: 0;
    margin-right: var(--space-12);
    margin-bottom: var(--space-6);
    margin-left: 0;
  }
}

@media (min-width: 640px) {
  .book-cover-placeholder {
    width: 260px;
    margin-inline: 0;
  }
}

/* ============================================================
   15. UTILITIES
   ============================================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-left   { text-align: left;   }
.text-right  { text-align: right;  }

.mt-4  { margin-top: var(--space-4);  }
.mt-8  { margin-top: var(--space-8);  }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4);  }
.mb-8  { margin-bottom: var(--space-8);  }

.gap-separator {
  display: block;
  height: var(--space-8);
}


/* ============================================================
   15. RESPONSIVE
   ============================================================ */

/* — Tablet (ab 640px) ——————————————————————————————————————— */
@media (min-width: 640px) {
  :root {
    --container-pad: var(--space-8);
  }

  .tiles-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }

  .feature-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .book-actions {
    flex-wrap: nowrap;
  }

  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* — Tablet groß (ab 768px) ———————————————————————————————— */
@media (min-width: 768px) {
  :root {
    --header-height: 72px;
  }

  h1 { font-size: var(--text-5xl); }

  .book-hero__inner {
    grid-template-columns: 260px 1fr;
  }

  .book-cover {
    margin-inline: 0;
  }

  .about-grid {
    grid-template-columns: 280px 1fr;
  }

  .about-portrait {
    margin-inline: 0;
  }

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

  .cta-block {
    padding: var(--space-16) var(--space-12);
  }
}

/* — Desktop (ab 1024px) ———————————————————————————————————— */
@media (min-width: 1024px) {
  :root {
    --container-pad: var(--space-10);
  }

  /* Navigation sichtbar, Toggle ausgeblendet */
  .site-nav { display: flex; }
  .nav-toggle { display: none; }

  .tiles-grid {
    grid-template-columns: 2fr repeat(2, 1fr);
    grid-template-rows: auto auto;
    gap: var(--space-6);
  }

  .tile--featured {
    grid-column: 1;
    grid-row: 1 / 3;
    min-height: 500px;
  }

  .book-hero__inner {
    grid-template-columns: 320px 1fr;
    gap: var(--space-16);
  }

  .feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* — Large Desktop (ab 1280px) ————————————————————————————— */
@media (min-width: 1280px) {
  .tiles-grid {
    grid-template-columns: 2fr repeat(2, 1fr);
  }

  .tile--featured {
    grid-column: 1;
    grid-row: 1 / 3;
    min-height: 560px;
  }
}

/* — Mobile Navigation (bis 1023px) ——————————————————————— */
@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    flex-direction: column;
    gap: var(--space-1);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav__link {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-4);
    width: 100%;
  }

  .site-nav__link--cta {
    margin-top: var(--space-2);
    text-align: center;
  }
}