/* ============================================================
   Bierprofessor.de – Stylesheet
   Design-System: Custom Properties, Reset, Typo, Components
   ============================================================ */

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

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-primary: #006600;
  --color-primary-dark: #004d00;
  --color-primary-light: #e6f2e6;
  --color-secondary: #C8A832;
  --color-secondary-dark: #a68a28;
  --color-neutral-dark: #1A1A1A;
  --color-neutral-mid: #6B6B6B;
  --color-neutral-light: #F8F6F2;
  --color-white: #FFFFFF;
  --color-border: #e0ddd6;

  /* Typography */
  --font-heading: 'Manrope', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --text-base: 1rem;
  --text-sm: 0.875rem;
  --text-lg: 1.125rem;
  --leading: 1.6;

  /* Spacing (8px grid) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Layout */
  --max-width: 1240px;
  --radius: 4px;
  --radius-lg: 8px;

  /* Transitions */
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--color-neutral-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul, ol {
  list-style: none;
}

/* --- Visually Hidden (screen-reader only) --- */
.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;
}

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

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-neutral-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

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

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background-color: var(--color-neutral-light);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__header h2 {
  margin-bottom: var(--space-sm);
}

.section__header p {
  color: var(--color-neutral-mid);
  font-size: var(--text-lg);
  max-width: 640px;
  margin: 0 auto;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  text-align: center;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn--large {
  padding: 16px 36px;
  font-size: var(--text-lg);
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 48px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-dark);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

.main-nav__list {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
}

.main-nav__list a {
  color: var(--color-neutral-dark);
  font-weight: 500;
  font-size: var(--text-sm);
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.main-nav__list a:hover,
.main-nav__list a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.main-nav .btn {
  font-size: var(--text-sm);
  padding: 8px 20px;
  border-bottom: none;
}

.main-nav .btn--primary {
  color: var(--color-white);
}

.main-nav .btn--primary:hover {
  color: var(--color-white);
}

/* --- Hero --- */
.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
  background-color: var(--color-neutral-light);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero__subline {
  font-size: var(--text-lg);
  color: var(--color-neutral-mid);
  max-width: 600px;
  margin-bottom: var(--space-xl);
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__trust {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

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

.hero__trust-icon {
  font-size: 1.25rem;
  line-height: 1;
}

.hero__trust-text {
  font-size: var(--text-sm);
  color: var(--color-neutral-mid);
}

.hero__trust-text strong {
  display: block;
  font-size: var(--text-base);
  color: var(--color-neutral-dark);
}

.hero__media {
  display: flex;
  flex-direction: column;
}

.hero__video-caption {
  font-size: var(--text-sm);
  color: var(--color-neutral-mid);
  text-align: center;
  margin-top: var(--space-md);
}

/* --- Video Placeholder --- */
.video-placeholder {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  background-color: var(--color-neutral-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-placeholder__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.video-placeholder__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.video-placeholder__inner p {
  opacity: 0.7;
  font-size: var(--text-sm);
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  color: var(--color-neutral-mid);
  font-size: var(--text-sm);
}

.card--highlight {
  border-color: var(--color-secondary);
  border-width: 2px;
}

.card__badge {
  display: inline-block;
  background-color: var(--color-secondary);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: var(--space-md);
}

.card__badge--soon {
  background-color: var(--color-neutral-mid);
}

.card--has-image {
  padding: 0;
  overflow: hidden;
}

.card--has-image h3,
.card--has-image p {
  padding: 0 var(--space-xl);
}

.card--has-image h3 {
  padding-top: var(--space-lg);
}

.card--has-image p:last-child {
  padding-bottom: var(--space-xl);
}

.card__image-wrap {
  position: relative;
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.card__image-wrap .card__badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  margin-bottom: 0;
}

/* --- About / Two-Column --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-image {
  width: 100%;
}

.about-image__img {
  width: 100%;
  border-radius: var(--radius-lg);
}

/* --- Referenzen --- */
.ref-grid {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
  flex-wrap: wrap;
}

.ref-item {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ref-item img {
  height: 60px;
  width: auto;
  opacity: 0.6;
  transition: opacity var(--transition);
}

.ref-item img:hover {
  opacity: 1;
}

/* --- CTA Banner --- */
.cta-banner {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-3xl) 0;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  font-size: var(--text-lg);
}

.cta-banner .btn--primary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.cta-banner .btn--primary:hover {
  background-color: var(--color-neutral-light);
  border-color: var(--color-neutral-light);
}

/* --- Leistungen Detail --- */
.service-detail {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.service-detail h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.service-detail p {
  color: var(--color-neutral-mid);
  max-width: 720px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.step {
  text-align: center;
}

.step__number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.step p {
  font-size: var(--text-sm);
  color: var(--color-neutral-dark);
}

/* --- Contact Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-2xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  font-size: var(--text-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--transition);
  background-color: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 102, 0, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-hint {
  font-size: var(--text-sm);
  color: var(--color-neutral-mid);
  margin-top: var(--space-xs);
}

.contact-info-box {
  background-color: var(--color-neutral-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.contact-info-box h3 {
  margin-bottom: var(--space-lg);
}

.contact-info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  align-items: flex-start;
}

.contact-info-item__icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item p {
  font-size: var(--text-sm);
  color: var(--color-neutral-mid);
}

.contact-info-item strong {
  display: block;
  color: var(--color-neutral-dark);
  font-size: var(--text-base);
}

/* --- Page Header (Unterseiten) --- */
.page-header {
  background-color: var(--color-neutral-light);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header p {
  color: var(--color-neutral-mid);
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-neutral-dark);
  color: var(--color-neutral-light);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer-logo {
  height: 80px;
  width: auto;
  margin-bottom: var(--space-md);
}

.site-footer p {
  font-size: var(--text-sm);
  color: #a0a0a0;
  line-height: 1.6;
}

.site-footer h4 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-family: var(--font-body);
  font-weight: 600;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a,
.footer-links span {
  color: #a0a0a0;
  font-size: var(--text-sm);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: #a0a0a0;
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: #a0a0a0;
}

.footer-legal a:hover {
  color: var(--color-white);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero__grid { grid-template-columns: 1fr; }
  .hero__trust { flex-wrap: wrap; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-xl); }
}

/* Mobile */
@media (max-width: 640px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.35rem; }

  .section { padding: var(--space-2xl) 0; }
  .hero { padding: var(--space-3xl) 0 var(--space-2xl); }

  .card-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }

  /* Mobile Nav */
  .nav-toggle { display: block; }

  .main-nav__list {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    gap: var(--space-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  }

  .main-nav__list.is-open {
    display: flex;
  }
}