/* =========================================================
   GISAN SHIPYARD — Component Styles
   Buttons · Navigation · Cards · Footer · Mobile Nav
   All derived from approved Stitch screens.
   ========================================================= */

/* ─────────────────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────────────────── */

/* Base button reset */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  line-height: var(--text-label-caps-lh);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

/* Primary CTA — teal, used in hero + section CTAs */
.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-on-primary);
  border-color: transparent;
  padding: 16px 32px;
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-on-secondary-container);
}

/* Nav CTA — dark navy, compact */
.btn-nav {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: transparent;
  padding: 12px 24px;
}
.btn-nav:hover,
.btn-nav:focus-visible {
  background-color: var(--color-on-primary-fixed-variant);
}

/* Ghost — outline, fills on hover */
.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
  padding: 16px 32px;
}
.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}

/* Ghost light — for dark sections (hero, CTA section) */
.btn-ghost-light {
  background-color: transparent;
  color: var(--color-on-primary);
  border-color: rgba(197, 198, 209, 0.5); /* outline-variant at 50% */
  padding: 16px 32px;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.btn-ghost-light:hover,
.btn-ghost-light:focus-visible {
  background-color: rgba(249, 249, 255, 0.1);
}

/* Mobile ghost dark-surface */
.btn-ghost-dark {
  background-color: transparent;
  color: var(--color-secondary-container);
  border-color: var(--color-secondary-container);
  padding: 16px 32px;
}
.btn-ghost-dark:hover,
.btn-ghost-dark:focus-visible {
  background-color: var(--color-secondary-container);
  color: var(--color-charcoal);
}

/* Mobile full-width off-white CTA */
.btn-light {
  background-color: var(--color-off-white);
  color: var(--color-charcoal);
  border-color: transparent;
  padding: 16px 32px;
  width: 100%;
  justify-content: center;
}
.btn-light:hover,
.btn-light:focus-visible {
  background-color: var(--color-secondary-container);
}

/* Mobile Enquiry Button — hidden on desktop by default */
.btn-enquiry-mobile {
  display: none;
}

/* Text link CTA — label-caps with animated underline border */
.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  line-height: var(--text-label-caps-lh);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  color: var(--color-secondary);
  border-bottom: 1px solid var(--color-secondary);
  padding-bottom: 4px;
  cursor: pointer;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  transition: var(--transition-base);
  text-decoration: none;
}
.btn-text-link:hover,
.btn-text-link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ─────────────────────────────────────────────────────────
   SITE HEADER / NAVIGATION (Desktop)
   ───────────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: rgba(249, 249, 255, 0.8);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(117, 118, 129, 0.3); /* outline at 30% */
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  padding: 0 var(--space-margin-desktop);
}

/* Logo */
.site-header__logo {
  display: block;
  flex: 0 0 auto;
  text-decoration: none;
}
.site-header__logo picture,
.site-header__logo img {
  display: block;
  width: 166px;
  height: auto;
}
.site-header__logo picture {
  margin-inline: auto;
}
.site-header__micro-brand {
  display: block;
  width: 166px;
  margin-top: 1px;
  font-family: var(--font-primary);
  font-size: 10px;
  line-height: 11px;
  font-weight: 500;
  letter-spacing: 0.025em;
  white-space: nowrap;
  text-align: center;
  color: var(--color-on-surface-variant);
}

/* Desktop nav links */
.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.site-nav__link {
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  line-height: var(--text-label-caps-lh);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  text-decoration: none;
  padding: 8px 0;
  transition: color 0.2s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-primary);
}

.site-nav__link.is-active {
  color: var(--color-secondary);
  border-bottom: 2px solid var(--color-secondary);
  padding-bottom: 6px;
}

/* Header actions area */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Language toggle */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  color: var(--color-on-surface);
  cursor: pointer;
  background: none;
  border: none;
  transition: color 0.2s ease;
}
.lang-toggle:hover { color: var(--color-primary); }
.lang-toggle .material-symbols-outlined { font-size: 16px; }

/* Hamburger button (mobile only) */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-off-white);
  padding: 4px;
}
.hamburger .material-symbols-outlined { font-size: 24px; }

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background-color: var(--color-charcoal);
  flex-direction: column;
  padding: 24px var(--space-margin-mobile);
  overflow-y: auto;
}
.mobile-nav.is-open { display: flex; }

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 48px;
}

.mobile-nav__logo {
  display: block;
  line-height: 0;
}
.mobile-nav__logo img {
  display: block;
  width: 160px;
  height: auto;
}

.mobile-nav__close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-off-white);
  display: flex;
  align-items: center;
}
.mobile-nav__close .material-symbols-outlined { font-size: 28px; }

.mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--text-headline-md-size);
  font-weight: 600;
  color: var(--color-off-white);
  padding: 20px 0;
  border-bottom: 1px solid rgba(129, 135, 185, 0.2);
  text-decoration: none;
  transition: color 0.2s ease;
}
.mobile-nav__link:hover { color: var(--color-secondary-container); }
.mobile-nav__link.is-active {
  color: var(--color-secondary-container);
  border-left: 3px solid var(--color-secondary-container);
  padding-left: 8px;
}

.mobile-nav__footer {
  margin-top: auto;
  padding-top: 40px;
}

/* ─────────────────────────────────────────────────────────
   MOBILE HEADER (separate dark version)
   ───────────────────────────────────────────────────────── */
.site-header--mobile-inner {
  display: none; /* shown via media query in home.css */
}

/* ─────────────────────────────────────────────────────────
   CAPABILITY CARDS
   ───────────────────────────────────────────────────────── */

/* Image card with gradient overlay */
.cap-card-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  height: 400px;
}

.cap-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-img);
  display: block;
}

.cap-card-image:hover img {
  transform: scale(1.05);
}

.cap-card-image__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,6,34,0.9), transparent);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
}

.cap-card-image__overlay h3 {
  color: var(--color-on-primary);
  margin-bottom: 8px;
}

.cap-card-image__overlay p {
  color: var(--color-inverse-primary);
  max-width: 480px;
}

/* Info card — white surface with border */
.cap-card-info {
  background-color: var(--color-surface-lowest);
  border: 1px solid rgba(117, 118, 129, 0.2);
  padding: 32px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: box-shadow 0.2s ease;
}

.cap-card-info:hover {
  box-shadow: 0 8px 24px rgba(0, 6, 34, 0.08);
}

.cap-card-info .icon {
  font-size: 40px;
  color: var(--color-secondary);
  margin-bottom: 16px;
  font-family: 'Material Symbols Outlined';
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  line-height: 1;
  display: block;
}

.cap-card-info h3 {
  color: var(--color-primary);
  margin-bottom: 8px;
}

.cap-card-info p {
  color: var(--color-on-surface-variant);
}

/* Info card — dark navy */
.cap-card-dark {
  background-color: var(--color-primary);
  padding: 32px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.cap-card-dark .icon {
  font-size: 40px;
  color: var(--color-secondary);
  margin-bottom: 16px;
  font-family: 'Material Symbols Outlined';
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  line-height: 1;
  display: block;
}

.cap-card-dark h3 {
  color: var(--color-on-primary);
  margin-bottom: 8px;
}

.cap-card-dark p {
  color: var(--color-inverse-primary);
}

/* ─────────────────────────────────────────────────────────
   PROJECT CARDS
   ───────────────────────────────────────────────────────── */
.project-card {
  cursor: pointer;
}

.project-card__image-wrap {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-low);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.project-card__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-img);
  display: block;
}

.project-card:hover .project-card__image-wrap img {
  transform: scale(1.05);
}

.project-card--featured .project-card__image-wrap {
  aspect-ratio: 4/3;
}

.project-card--secondary .project-card__image-wrap {
  aspect-ratio: 16/9;
  margin-bottom: 16px;
}

.project-card__badge {
  position: absolute;
  top: 24px;
  left: 24px;
  background-color: rgba(0, 6, 34, 0.9);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
}

.project-card__badge .material-symbols-outlined { font-size: 14px; }

.project-card__meta {
  font-family: var(--font-mono);
  font-size: var(--text-spec-data-size);
  letter-spacing: var(--text-spec-data-ls);
  font-weight: var(--text-spec-data-weight);
  color: var(--color-secondary);
  margin-bottom: 4px;
}

.project-card__title {
  color: var(--color-primary);
  margin-bottom: 8px;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  color: var(--color-secondary);
  text-decoration: none;
  margin-top: 8px;
  transition: color 0.2s ease;
}
.project-card__link .material-symbols-outlined { font-size: 16px; }

.project-card:hover .project-card__link {
  color: var(--color-primary);
}

/* ─────────────────────────────────────────────────────────
   SPEC GRID (Infrastructure numbers)
   ───────────────────────────────────────────────────────── */
.spec-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 48px;
}

.spec-item {
  border-top: 1px solid rgba(129, 135, 185, 0.3);
  padding-top: 24px;
}

.spec-item__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-off-white);
  margin-bottom: 4px;
}

.spec-item__label {
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  letter-spacing: var(--text-label-caps-ls);
  font-weight: var(--text-label-caps-weight);
  text-transform: uppercase;
  color: var(--color-outline);
}

/* ─────────────────────────────────────────────────────────
   HSE IMAGES — grayscale hover
   ───────────────────────────────────────────────────────── */
.hse-image-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.hse-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius);
  filter: grayscale(1);
  transition: filter 0.5s ease;
  display: block;
}

.hse-img:hover { filter: grayscale(0); }

.hse-img--offset { margin-top: 36px; }

/* ─────────────────────────────────────────────────────────
   SITE FOOTER
   ───────────────────────────────────────────────────────── */
.site-footer {
  background-color: var(--color-charcoal);
  border-top: 1px solid rgba(129, 135, 185, 0.2);
  padding: 64px 0;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-gutter);
  padding: 0 var(--space-margin-desktop);
  align-items: start;
}

.site-footer__brand {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.site-footer__logo {
  display: block;
  width: max-content;
  max-width: 100%;
  text-decoration: none;
}
.site-footer__logo img {
  display: block;
  width: 174px;
  max-width: 100%;
  height: auto;
}

.site-footer__copy {
  font-size: var(--text-body-md-size);
  color: var(--color-outline);
}

.site-footer__utilities {
  grid-column: span 8;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 18px;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 32px;
  align-items: center;
}

.site-footer__link {
  font-size: var(--text-body-md-size);
  color: var(--color-outline);
  text-decoration: none;
  transition: color 0.2s ease;
}
.site-footer__link:hover {
  color: var(--color-off-white);
  text-decoration: underline;
  text-decoration-color: var(--color-secondary);
}

.site-footer__link--pending {
  cursor: default;
}
.site-footer__link--pending:hover {
  color: var(--color-outline);
  text-decoration: none;
}

.site-footer__languages {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--color-outline);
  font-family: var(--font-primary);
  font-size: var(--text-body-md-size);
}

.site-footer__language-label {
  margin-right: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-footer__language {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-off-white);
  text-decoration: none;
  font-weight: 700;
}

.site-footer__language--current {
  color: var(--color-secondary);
  box-shadow: inset 0 -2px var(--color-secondary);
}

a.site-footer__language:hover,
a.site-footer__language:focus-visible {
  color: var(--color-secondary);
  text-decoration: underline;
  text-underline-offset: 5px;
}

a.site-footer__language:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* ─────────────────────────────────────────────────────────
   SECTION HEADER UTILITY (title + sub-link row)
   ───────────────────────────────────────────────────────── */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
}

.section-header--bordered {
  border-bottom: 1px solid rgba(117, 118, 129, 0.3);
  padding-bottom: 32px;
  margin-bottom: 0;
}

.section-title-group { display: flex; flex-direction: column; gap: 8px; }

/* ─────────────────────────────────────────────────────────
   RESPONSIVE — component overrides
   ───────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .site-footer__inner { padding: 0 40px; }
  .spec-grid { gap: 24px; }
}

/* The complete TR desktop navigation needs at least 1360px. Keep one
   shared breakpoint so page-specific styles cannot squeeze it at tablet widths. */
@media (max-width: 1359px) {
  /* Header: use the existing accessible mobile navigation. */
  .site-nav { display: none; }
  .site-header__actions { display: none; }

  /* Header becomes dark on mobile */
  .site-header {
    background-color: rgba(18, 20, 23, 0.95);
    border-bottom: 1px solid rgba(129, 135, 185, 0.2);
  }

  /* Mobile header inner: 3-column flex layout (Hamburger left, GISAN center, Enquiry right) */
  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-margin-mobile);
    height: 64px;
  }

  .hamburger {
    display: flex;
    order: 1;
    color: var(--color-off-white);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
  }

  .site-header__logo {
    order: 2;
    display: block;
  }

  .site-header__logo picture,
  .site-header__logo img {
    width: 128px;
  }
  .site-header__micro-brand {
    color: var(--color-secondary-container);
  }

  .btn-enquiry-mobile {
    display: inline-flex;
    order: 3;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-family: var(--font-primary);
    font-size: var(--text-label-caps-size);
    font-weight: 700;
    letter-spacing: var(--text-label-caps-ls);
    text-transform: uppercase;
    color: var(--color-off-white);
    background-color: transparent;
    border: 1px solid rgba(129, 135, 185, 0.5);
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition-base);
  }
  .btn-enquiry-mobile:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-off-white);
  }
}

@media (max-width: 768px) {
  /* Footer stacks */
  .site-footer__brand,
  .site-footer__utilities { grid-column: span 12; }
  .site-footer__utilities { align-items: flex-start; }
  .site-footer__links { justify-content: flex-start; }
  .site-footer__inner { padding: 0 var(--space-margin-mobile); }

  /* Capability image cards shorter */
  .cap-card-image { height: 280px; }

  /* HSE images on mobile */
  .hse-image-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hse-img { height: 220px; }
  .hse-img--offset { margin-top: 16px; }

  /* Spec grid narrows */
  .spec-grid { gap: 20px; }
  .spec-item__value { font-size: 24px; }

  /* Section headers stack on mobile */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  /* Hide btn-ghost on mobile CTA section */
  .cta-ghost-hide-mobile { display: none; }
}

@media (max-width: 480px) {
  .site-header__micro-brand { display: none; }
  .hse-image-grid { grid-template-columns: 1fr; gap: 16px; }
  .hse-img { height: 220px; }
  .hse-img--offset { margin-top: 0; }
}