/* =========================================================
   MOIN Kaffee Konzentrat – Stylesheet
   Mobile-First, CSS-Variablen, WCAG 2.2 AA konform
   ========================================================= */

/* ---------- 1. CSS-Variablen ---------- */
:root {
  /* Farben */
  --color-lime: #E4FE91;
  --color-magenta: #E57BF7;
  --color-turquoise: #95DFD3;
  --color-blue: #3947F2;

  --color-text: #1A1A1A;
  --color-text-inverse: #FFFFFF;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7F7F5;
  --color-bg-hero: #8C8C8C;
  --color-border: #DADADA;
  --color-footer-bg: #2B2B2B;
  --color-placeholder: #C4C4C4;

  --color-focus: var(--color-blue);

  /* Typografie */
  --font-base: 'Helvetica Neue', Arial, -apple-system, BlinkMacSystemFont, sans-serif;
  --fs-base: 1rem;
  --fs-h1: clamp(1.75rem, 5vw, 3rem);
  --fs-h2: clamp(1.5rem, 4vw, 2.25rem);
  --fs-h3: clamp(1.15rem, 2.5vw, 1.5rem);
  --fs-small: 0.875rem;
  --lh-base: 1.6;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Radius / Layout */
  --radius-md: 0.75rem;
  --radius-full: 999px;
  --max-width: 75rem;
}

/* ---------- 2. Reset & Basis ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

h1, h2, h3 {
  margin: 0 0 var(--space-sm) 0;
  line-height: 1.25;
}

p {
  margin: 0 0 var(--space-sm) 0;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* ---------- 3. Barrierefreiheit: Fokus & Utility ---------- */
:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

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

.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;
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space-sm);
  background: var(--color-blue);
  color: var(--color-text-inverse);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top 0.2s ease-in-out;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  min-width: 2.75rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-magenta);
  color: var(--color-text);
}

.btn-primary:hover {
  background-color: var(--color-lime);
}

/* ---------- 5. Header & Navigation ---------- */
.site-header {
  background-color: var(--color-bg);
  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;
  padding-block: var(--space-sm);
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo-sub {
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  color: #555;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border: none;
  cursor: pointer;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--color-text);
  position: relative;
  transition: transform 0.2s ease;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
}

.hamburger::before {
  top: -0.4375rem;
}

.hamburger::after {
  top: 0.4375rem;
}

.main-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: none;
}

.main-nav.is-open {
  display: block;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) var(--space-md);
}

.main-nav a {
  display: block;
  padding: var(--space-sm) 0;
  font-weight: 600;
  min-height: 2.75rem;
  display: flex;
  align-items: center;
}

.main-nav a:hover {
  color: var(--color-magenta);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    position: static;
    display: block;
    border: none;
    background: transparent;
  }

  .main-nav ul {
    flex-direction: row;
    gap: var(--space-lg);
    padding: 0;
  }

  .main-nav a {
    padding: 0;
    min-height: auto;
  }
}

/* ---------- 6. Hero ---------- */
.hero {
  background-color: var(--color-bg-hero);
  color: var(--color-text-inverse);
  padding-block: var(--space-2xl);
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.hero h1 {
  font-size: var(--fs-h1);
  font-weight: 800;
  max-width: 40ch;
}

/* ---------- 7. Gute Gründe ---------- */
.reasons {
  padding-block: var(--space-xl);
  text-align: center;
}

.reasons h2 {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-lg);
}

.reasons-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.reason-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.reason-icon {
  color: var(--color-blue);
  background-color: var(--color-turquoise);
  border-radius: 50%;
  width: 5rem;
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reason-item h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.reason-item p {
  font-size: var(--fs-small);
  color: #444;
}

@media (min-width: 600px) {
  .reasons-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- 8. Produkte ---------- */
.products {
  padding-block: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.product-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.product-media {
  width: 100%;
  max-width: 22rem;
  aspect-ratio: 1 / 1;
  background-color: var(--color-placeholder);
  border-radius: var(--radius-md);
}

.product-info {
  text-align: center;
  max-width: 30ch;
}

.product-info h3 {
  font-size: var(--fs-h3);
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .product-row {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-2xl);
    text-align: left;
  }

  .product-row--reverse {
    flex-direction: row-reverse;
  }

  .product-info {
    text-align: left;
  }
}

/* ---------- 9. Testimonials ---------- */
.testimonials {
  background-color: var(--color-turquoise);
  padding-block: var(--space-xl);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.testimonial-card {
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.testimonial-card--light {
  background-color: var(--color-lime);
  color: var(--color-text);
}

.testimonial-card--dark {
  background-color: var(--color-text);
  color: var(--color-text-inverse);
}

.badge {
  align-self: flex-start;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-size: var(--fs-small);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.testimonial-card blockquote {
  margin: 0;
  font-size: var(--fs-small);
}

.testimonial-footer {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--color-placeholder);
  display: inline-block;
}

@media (min-width: 600px) {
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .testimonial-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 10. Social Carousel ---------- */
.social {
  padding-block: var(--space-xl);
  text-align: center;
}

.social h2 {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-lg);
}

.carousel {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.carousel-track {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  flex: 1;
  padding-block: var(--space-xs);
}

.carousel-item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.carousel-placeholder {
  display: block;
  width: 6.5rem;
  height: 6.5rem;
  background-color: var(--color-placeholder);
  border-radius: var(--radius-md);
}

.carousel-btn {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  font-size: 1.5rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.carousel-btn:hover {
  background-color: var(--color-lime);
}

/* ---------- 11. FAQ Akkordeon ---------- */
.faq {
  padding-block: var(--space-xl);
}

.faq h2 {
  font-size: var(--fs-h2);
  text-align: center;
  margin-bottom: var(--space-lg);
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 45rem;
  margin-inline: auto;
}

.accordion-item h3 {
  margin: 0;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  background-color: var(--color-magenta);
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  min-height: 2.75rem;
}

.accordion-trigger:hover {
  background-color: var(--color-lime);
}

.icon-chevron {
  width: 0.7rem;
  height: 0.7rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.accordion-trigger[aria-expanded="true"] .icon-chevron {
  transform: rotate(-135deg);
}

.accordion-panel {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: var(--space-xs);
  font-size: var(--fs-small);
}

.accordion-panel[hidden] {
  display: none;
}

/* ---------- 12. Footer ---------- */
.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-text-inverse);
  padding-block: var(--space-xl) var(--space-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.footer-col h3 {
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  color: var(--color-turquoise);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-col a {
  font-size: var(--fs-small);
  color: #DDD;
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
}

.footer-col a:hover {
  color: var(--color-lime);
}

.copyright {
  margin-top: var(--space-lg);
  font-size: var(--fs-small);
  color: #AAA;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .site-footer {
    padding-block: var(--space-2xl) var(--space-md);
  }
}

/* ---------- 13. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}