/* ==========================================================================
   Layout — header, navigation, mobile menu, footer, page hero, grids
   ========================================================================== */

/* Header ------------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-h);
  color: var(--c-ivory);
  transition: height var(--t) var(--ease), background-color var(--t) var(--ease),
    box-shadow var(--t) var(--ease), backdrop-filter var(--t) var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--c-line-light);
  transition: opacity var(--t) ease;
}

.site-header.is-scrolled {
  height: var(--header-h-scrolled);
  background: rgba(6, 15, 28, 0.94);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  backdrop-filter: saturate(160%) blur(16px);
  box-shadow: 0 10px 30px -20px rgba(0, 0, 0, 0.6);
}

.site-header.is-scrolled::after {
  opacity: 0;
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.brand__mark {
  width: 44px;
  height: 44px;
  transition: transform var(--t) var(--ease);
}

.brand:hover .brand__mark {
  transform: rotate(-12deg);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.brand__sub {
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  color: var(--c-gold);
}

/* Primary nav (desktop) */
.primary-nav {
  display: none;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 0.2rem + 1.6vw, 2.2rem);
}

.primary-nav__link {
  position: relative;
  display: inline-block;
  padding-block: var(--space-2);
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  color: rgba(245, 241, 234, 0.85);
}

.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t) var(--ease);
}

.primary-nav__link:hover,
.primary-nav__link[aria-current="page"] {
  color: var(--c-white);
}

.primary-nav__link:hover::after,
.primary-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-actions .header-cta {
  display: none;
}

.cart-link {
  position: relative;
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-line-light);
  border-radius: 50%;
  transition: border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.cart-link:hover {
  border-color: var(--c-gold);
  background: rgba(200, 169, 106, 0.08);
}

.cart-link svg {
  width: 18px;
  height: 18px;
}

.cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding-inline: 5px;
  display: grid;
  place-items: center;
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1;
  color: var(--c-navy-900);
  background: var(--c-gold);
  border-radius: 999px;
  transform: scale(0);
  transition: transform var(--t) var(--ease);
}

.cart-count.has-items {
  transform: scale(1);
}

.cart-count.is-bump {
  animation: bump 0.5s var(--ease);
}

@keyframes bump {
  40% { transform: scale(1.35); }
  100% { transform: scale(1); }
}

/* Hamburger */
.menu-toggle {
  position: relative;
  z-index: calc(var(--z-menu) + 1);
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 7px;
}

.menu-toggle__bar {
  display: block;
  width: 26px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--t) var(--ease), width var(--t) var(--ease);
}

.menu-toggle__bar:last-child {
  width: 18px;
  margin-left: 8px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:first-child {
  transform: translateY(4.25px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:last-child {
  width: 26px;
  margin-left: 0;
  transform: translateY(-4.25px) rotate(-45deg);
}

/* Mobile menu ------------------------------------------------------------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-h) + var(--space-6)) var(--gutter) var(--space-7);
  background: var(--c-navy-900);
  color: var(--c-ivory);
  overflow-y: auto;
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  transition: clip-path 0.7s var(--ease-in-out), visibility 0s linear 0.7s;
}

.mobile-menu.is-open {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  transition: clip-path 0.7s var(--ease-in-out), visibility 0s;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  counter-reset: menu;
}

.mobile-menu__item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.mobile-menu.is-open .mobile-menu__item {
  opacity: 1;
  transform: none;
}

.mobile-menu.is-open .mobile-menu__item:nth-child(1) { transition-delay: 0.25s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(2) { transition-delay: 0.3s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(3) { transition-delay: 0.35s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(4) { transition-delay: 0.4s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(5) { transition-delay: 0.45s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(6) { transition-delay: 0.5s; }
.mobile-menu.is-open .mobile-menu__item:nth-child(7) { transition-delay: 0.55s; }

.mobile-menu__link {
  counter-increment: menu;
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding-block: var(--space-3);
  font-family: var(--ff-serif-tc);
  font-size: clamp(1.6rem, 1.2rem + 2vw, 2.4rem);
  border-bottom: 1px solid var(--c-line-light);
}

.mobile-menu__link::before {
  content: "0" counter(menu);
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  color: var(--c-gold);
  letter-spacing: 0.1em;
}

.mobile-menu__link[aria-current="page"],
.mobile-menu__link:hover {
  color: var(--c-gold);
}

.mobile-menu__footer {
  margin-top: auto;
  padding-top: var(--space-7);
  display: grid;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--c-muted-light);
}

.mobile-menu__footer a:hover {
  color: var(--c-gold);
}

/* Page hero (sub pages) ---------------------------------------------------- */
.page-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: clamp(420px, 62vh, 620px);
  padding: calc(var(--header-h) + var(--space-8)) 0 var(--space-8);
  color: var(--c-ivory);
  background: var(--c-navy-900);
  overflow: hidden;
  isolation: isolate;
}

.page-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: kenburns 22s ease-out forwards;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(6, 15, 28, 0.55) 0%, rgba(6, 15, 28, 0.35) 40%, rgba(6, 15, 28, 0.92) 100%),
    linear-gradient(90deg, rgba(6, 15, 28, 0.6) 0%, transparent 70%);
}

.page-hero__title {
  margin-top: var(--space-4);
  max-width: 18ch;
  font-family: var(--ff-serif-tc);
  font-weight: 500;
}

.page-hero__title em {
  font-family: var(--ff-display);
  color: var(--c-gold);
}

.page-hero .lead {
  margin-top: var(--space-5);
}

@keyframes kenburns {
  from { transform: scale(1.12); }
  to { transform: scale(1); }
}

/* Breadcrumb */
.breadcrumb {
  margin-bottom: var(--space-5);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted-light);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: var(--space-2);
  color: var(--c-gold);
}

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

/* Section header ---------------------------------------------------------- */
.section-head {
  display: grid;
  gap: var(--space-5);
  margin-bottom: clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
}

.section-head__title {
  font-family: var(--ff-serif-tc);
  font-weight: 500;
  max-width: 20ch;
}

.section-head--center {
  justify-items: center;
  text-align: center;
}

.section-head--center .section-head__title {
  max-width: 24ch;
}

.section-head--split {
  align-items: end;
}

/* Grids ------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2,
.grid--3,
.grid--4 {
  grid-template-columns: minmax(0, 1fr);
}

.split {
  display: grid;
  gap: clamp(2.5rem, 1rem + 5vw, 6rem);
  align-items: center;
}

/* Footer ------------------------------------------------------------------ */
.site-footer {
  position: relative;
  background: var(--c-navy-900);
  color: var(--c-muted-light);
  font-size: var(--fs-sm);
  overflow: hidden;
}

.site-footer::before {
  content: "TOTAL MARINE";
  position: absolute;
  left: 50%;
  bottom: -0.22em;
  transform: translateX(-50%);
  font-family: var(--ff-display);
  font-size: clamp(4rem, 15vw, 15rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: rgba(245, 241, 234, 0.03);
  pointer-events: none;
}

.footer-top {
  display: grid;
  gap: var(--space-7);
  padding-block: var(--space-9) var(--space-8);
}

.footer-brand p {
  margin-top: var(--space-5);
  max-width: 36ch;
}

.footer-title {
  margin-bottom: var(--space-5);
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--c-gold);
}

.footer-links {
  display: grid;
  gap: var(--space-3);
}

.footer-links a {
  position: relative;
}

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

.footer-contact {
  display: grid;
  gap: var(--space-4);
  font-style: normal;
}

.footer-contact strong {
  display: block;
  font-weight: 400;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  color: rgba(245, 241, 234, 0.4);
}

.footer-contact a:hover {
  color: var(--c-gold);
}

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

.social a {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-line-light);
  border-radius: 50%;
  transition: all var(--t-fast) ease;
}

.social a:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.social svg {
  width: 16px;
  height: 16px;
}

.footer-bottom {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-block: var(--space-6) var(--space-8);
  border-top: 1px solid var(--c-line-light);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
}

.footer-bottom__links {
  display: flex;
  gap: var(--space-5);
}

.footer-bottom a:hover {
  color: var(--c-gold);
}

/* Back to top ------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  right: clamp(1rem, 2vw, 2rem);
  bottom: clamp(1rem, 2vw, 2rem);
  z-index: 90;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: var(--c-gold);
  background: rgba(6, 15, 28, 0.88);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility 0s linear var(--t);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility 0s;
}

.back-to-top:hover {
  transform: translateY(-3px);
}

.back-to-top__ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.back-to-top__ring circle {
  fill: none;
  stroke-width: 1.5;
}

.back-to-top__track {
  stroke: rgba(245, 241, 234, 0.12);
}

.back-to-top__progress {
  stroke: var(--c-gold);
  stroke-dasharray: 150.8;
  stroke-dashoffset: 150.8;
  transition: stroke-dashoffset 0.1s linear;
}

.back-to-top__icon {
  width: 18px;
  height: 18px;
}

/* WhatsApp floating */
.wa-float {
  position: fixed;
  left: clamp(1rem, 2vw, 2rem);
  bottom: clamp(1rem, 2vw, 2rem);
  z-index: 90;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: var(--c-white);
  background: #25d366;
  border-radius: 50%;
  box-shadow: var(--shadow);
  transition: transform var(--t-fast) ease;
}

.wa-float:hover {
  transform: scale(1.06);
}

.wa-float svg {
  width: 26px;
  height: 26px;
}

/* Responsive -------------------------------------------------------------- */
@media (min-width: 480px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

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

  .section-head--split {
    grid-template-columns: 1.2fr 1fr;
  }

  .header-actions .header-cta {
    display: inline-flex;
  }
}

@media (min-width: 992px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .split--wide-left {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .footer-top {
    grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  }
}

@media (min-width: 1200px) {
  .primary-nav {
    display: block;
  }

  .menu-toggle {
    display: none;
  }

  .mobile-menu {
    display: none;
  }
}

@media (max-width: 479px) {
  :root {
    --header-h: 76px;
    --header-h-scrolled: 64px;
  }

  .brand__mark {
    width: 38px;
    height: 38px;
  }

  .brand__name {
    font-size: 1.1rem;
  }

  .brand__sub {
    font-size: 0.6rem;
    letter-spacing: 0.22em;
  }
}