/* =========================================================
   layout.css — Structural Layout for KPSG Fürth
   ========================================================= */

/* ── Base Body ── */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-secondary);
  background-color: var(--color-bg);
}

/* ── Site Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  gap: var(--space-6);
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

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

.logo-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.logo-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Main Navigation ── */
.main-nav {
  display: flex;
  align-items: center;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.main-nav a {
  display: block;
  position: relative;
  color: var(--color-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: var(--space-2) var(--space-1);
  text-decoration: none;
  white-space: nowrap;
}

.main-nav > ul > li > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.main-nav > ul > li > a:hover::after,
.main-nav > ul > li > a[aria-current="page"]::after {
  width: 100%;
}

.main-nav > ul > li > a:hover {
  color: var(--color-primary);
}

/* ── Dropdown Navigation ── */
.nav-has-dropdown {
  position: relative;
}

.nav-has-dropdown > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-has-dropdown > a .nav-arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.nav-has-dropdown.open > a .nav-arrow {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: calc(100% - 2px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: 10px 0 var(--space-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 200;
}

.dropdown.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown li a {
  display: block;
  padding: var(--space-2) var(--space-5);
  color: var(--color-secondary);
  font-size: 0.9375rem;
  font-weight: 400;
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown li a::after {
  display: none;
}

.dropdown li a:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* ── Gaststätte Nav Button ── */
.btn-gaststaette {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-base);
  flex-shrink: 0;
}

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

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Main Content ── */
main {
  display: block;
}

/* ── Container ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── Section ── */
.section {
  padding: 80px 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  margin-bottom: var(--space-12);
  max-width: 640px;
}

/* ── Grids ── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

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

/* ── Site Footer ── */
.site-footer {
  background-color: var(--color-secondary);
  color: #ffffff;
  padding: 60px 0 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  margin-bottom: 0;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-address {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.footer-address strong {
  display: block;
  color: #ffffff;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9375rem;
  margin-bottom: var(--space-2);
}

.footer-contact-item a {
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition-fast);
}

.footer-contact-item a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
}

.footer-legal {
  display: flex;
  gap: var(--space-5);
  list-style: none;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: rgba(255, 255, 255, 0.9);
}

/* ── Responsive ── */

/* Tablet (≤ 1024px) */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile (≤ 768px) */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 99;
  }

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

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 var(--space-6);
  }

  .main-nav > ul > li > a {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav > ul > li:last-child > a {
    border-bottom: none;
  }

  .main-nav > ul > li > a::after {
    display: none;
  }

  .dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background-color: var(--color-primary-light);
    padding: var(--space-2) 0;
    opacity: 1;
    pointer-events: auto;
    display: none;
  }

  .nav-has-dropdown.open .dropdown {
    display: block;
  }

  .dropdown li a {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
  }

  .btn-gaststaette {
    display: none;
  }

  .section {
    padding: 48px 0;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}