/* ============================================================
   BILDWERK – Fotografie
   Layout – Header, Footer, Sections, Nav, Grids
   ============================================================ */

/* ─── SCROLL LOCK ─── */

body.scroll-locked {
  overflow: hidden;
}

/* ─── HEADER ─── */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--sp-6) var(--container-pad);
  transition:
    padding     var(--dur-state) var(--ease-out-quint),
    background  var(--dur-state) var(--ease-out-quint),
    box-shadow  var(--dur-state) var(--ease-out-quint),
    border-color var(--dur-state),
    transform var(--dur-state) var(--ease-out-quint);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  padding: var(--sp-4) var(--container-pad);
  background: color-mix(in srgb, var(--clr-dark-900) 94%, var(--clr-dark-700));
  border-bottom-color: var(--clr-dark-border);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.22);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-xl);
  margin: 0 auto;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  transition: opacity var(--dur-feedback), transform var(--dur-state) var(--ease-out-quint);
}

.header__logo:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.header__logo-mark {
  width: clamp(1.9rem, 3.2vw, 2.4rem);
  height: clamp(1.9rem, 3.2vw, 2.4rem);
  object-fit: contain;
  flex-shrink: 0;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header__logo-name {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--clr-text-primary);
  line-height: 1;
  text-transform: uppercase;
}

.header__logo-sub {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--clr-gold-light);
  line-height: 1;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.nav__link {
  position: relative;
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  text-decoration: none;
  transition: color var(--dur-feedback), transform var(--dur-state) var(--ease-out-quint);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: calc(100% - 2rem);
  height: 1px;
  background: var(--clr-gold-light);
  transform: translateX(-50%);
  transform-origin: center;
  scale: 0 1;
  transition: scale var(--dur-state) var(--ease-out-quint);
}

.nav__link:hover,
.nav__link.active {
  color: var(--clr-text-primary);
  transform: translateY(-1px);
}

.nav__link:hover::after,
.nav__link.active::after {
  scale: 1 1;
}

.nav__cta {
  margin-left: var(--sp-4);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  padding: 2px;
}

.hamburger__line {
  height: 1.5px;
  background: var(--clr-text-primary);
  border-radius: var(--radius-full);
  transition:
    transform var(--dur-state) var(--ease-out-quint),
    opacity   var(--dur-state),
    width     var(--dur-state) var(--ease-out-quint);
}

.hamburger__line:nth-child(2) { width: 75%; }

.hamburger.open .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
  width: 100%;
}

.hamburger.open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: translateX(8px);
}

.hamburger.open .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
  width: 100%;
}

/* ─── MOBILE MENU ─── */

.mobile-menu {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--clr-dark-900) 96%, transparent);
  z-index: calc(var(--z-header) - 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity     var(--dur-slow) var(--ease-out-expo),
    visibility  var(--dur-slow);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--sp-2);
  width: min(92vw, 28rem);
  padding: var(--sp-6);
  border: 1px solid var(--clr-dark-border);
  background: var(--clr-dark-800);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  transform: translateY(18px) scale(0.985);
  transition:
    transform var(--dur-slow) var(--ease-out-expo),
    border-color var(--dur-state) var(--ease-out-quint),
    box-shadow var(--dur-state) var(--ease-out-quint);
}

.mobile-menu__link {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2.8vw, 1.15rem);
  font-weight: 400;
  color: var(--clr-text-primary);
  text-decoration: none;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  line-height: 1.1;
  padding: 0.95rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  transition:
    color   var(--dur-feedback),
    border-color var(--dur-feedback),
    background var(--dur-feedback),
    opacity var(--dur-feedback),
    transform var(--dur-state) var(--ease-out-quint);
  opacity: 0;
  transform: translateY(20px);
}

.mobile-menu.open .mobile-menu__nav {
  transform: translateY(0) scale(1);
}

.mobile-menu.open .mobile-menu__link {
  opacity: 1;
  transform: translateY(0);
  transition:
    color     var(--dur-feedback),
    opacity   var(--dur-slow) var(--ease-out-expo),
    transform var(--dur-slow) var(--ease-out-expo);
}

.mobile-menu.open .mobile-menu__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.open .mobile-menu__link:nth-child(2) { transition-delay: 0.18s; }
.mobile-menu.open .mobile-menu__link:nth-child(3) { transition-delay: 0.26s; }
.mobile-menu.open .mobile-menu__link:nth-child(4) { transition-delay: 0.34s; }
.mobile-menu.open .mobile-menu__link:nth-child(5) { transition-delay: 0.42s; }

.mobile-menu__link:hover,
.mobile-menu__link.active {
  color: var(--clr-text-primary);
  border-color: color-mix(in srgb, var(--clr-gold-light) 40%, transparent);
  background: color-mix(in srgb, var(--clr-gold-mid) 18%, transparent);
}

.mobile-menu__footer {
  position: absolute;
  bottom: var(--sp-10);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--clr-text-muted);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
}

/* ─── FOOTER ─── */

.footer {
  background: var(--clr-dark-900);
  border-top: 1px solid var(--clr-dark-border);
}

.footer__main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-12);
  padding: clamp(4rem, 8vw, 6rem) var(--container-pad);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.footer__brand {}

.footer__logo-name {
  font-family: var(--font-serif);
  font-size: var(--fs-xl);
  font-weight: 400;
  letter-spacing: var(--ls-wide);
  color: var(--clr-text-primary);
  margin-bottom: var(--sp-2);
}

.footer__logo-sub {
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--clr-gold-light);
  margin-bottom: var(--sp-6);
  display: block;
}

.footer__tagline {
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  color: var(--clr-text-muted);
  max-width: 240px;
  margin-bottom: var(--sp-8);
}

.footer__social {
  display: flex;
  gap: var(--sp-4);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--clr-dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  text-decoration: none;
  transition:
    border-color var(--dur-fast),
    color        var(--dur-fast),
    background   var(--dur-fast);
}

.footer__social-link:hover {
  border-color: var(--clr-gold-light);
  color: var(--clr-gold-light);
  background: color-mix(in srgb, var(--clr-gold-mid) 18%, transparent);
}

.footer__col-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  margin-bottom: var(--sp-6);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.footer__link {
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color var(--dur-feedback), transform var(--dur-state) var(--ease-out-quint);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.footer__link:hover {
  color: var(--clr-gold-light);
  transform: translateX(4px);
}

.footer__bottom {
  border-top: 1px solid var(--clr-dark-border);
  padding: var(--sp-6) var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-xl);
  margin: 0 auto;
}

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

.footer__legal {
  display: flex;
  gap: var(--sp-6);
}

.footer__legal-link {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color var(--dur-feedback), transform var(--dur-state) var(--ease-out-quint);
}

.footer__legal-link:hover {
  color: var(--clr-gold-light);
  transform: translateY(-1px);
}

/* ─── CTA SECTION (shared across all pages) ─── */

.cta-section {
  background: var(--clr-dark-900);
  padding: var(--section-y) var(--container-pad);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(201, 168, 118, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__inner {
  max-width: var(--container-md);
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  margin-bottom: var(--sp-5);
}

.cta-section p {
  font-size: var(--fs-lg);
  max-width: 500px;
  margin: 0 auto var(--sp-12);
}

.cta-section__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--sp-5);
  margin-bottom: var(--sp-12);
}

.cta-section__contact-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-8);
  flex-wrap: wrap;
}

.cta-section__contact-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
}

.cta-section__contact-item a {
  color: var(--clr-text-secondary);
  transition: color var(--dur-fast);
}

.cta-section__contact-item a:hover { color: var(--clr-gold-light); }

/* ─── SECTION LAYOUT HELPERS ─── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.two-col--60-40 {
  grid-template-columns: 1.4fr 1fr;
}

.two-col--40-60 {
  grid-template-columns: 1fr 1.4fr;
}

/* ─── GRID UTILITIES ─── */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-8); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-8); }

/* ─── RESPONSIVE ─── */

@media (max-width: 1023px) {
  .nav { display: none; }
  .hamburger { display: flex; }

  .footer__main {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-12) var(--sp-8);
  }

  .two-col,
  .two-col--60-40,
  .two-col--40-60 {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }
}

@media (max-width: 639px) {
  .header {
    padding-top: var(--sp-4);
    padding-bottom: var(--sp-4);
  }

  .header.scrolled {
    padding-top: var(--sp-3);
    padding-bottom: var(--sp-3);
  }

  .header__logo-name {
    font-size: clamp(1.15rem, 5.5vw, 1.45rem);
  }

  .header__logo-sub {
    letter-spacing: var(--ls-wide);
  }

  .mobile-menu {
    padding: 5.2rem var(--sp-4) var(--sp-6);
    justify-content: flex-start;
  }

  .mobile-menu__nav {
    width: 100%;
    max-width: 100%;
    padding: var(--sp-4);
  }

  .section,
  .section--sm,
  .cta-section {
    padding-top: clamp(3rem, 9vw, 4.5rem);
    padding-bottom: clamp(3rem, 9vw, 4.5rem);
  }

  .footer__main {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--sp-4);
    text-align: center;
  }

  .footer__legal {
    justify-content: center;
  }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}