/* ==========================================================================
   IVMS MARITIME — design tokens
   ========================================================================== */
:root{
  --navy:#0A2540;
  --deep-sea:#0F3556;
  --ocean:#1478B0;
  --ocean-light:#4FA8DA;
  --amber:#FFB100;
  --foam:#F4F7FA;
  --white:#FFFFFF;
  --ink:#0A2540;
  --muted:#5B7186;
  --line:rgba(10,37,64,.12);
  --line-dark:rgba(255,255,255,.14);

  --display:'Space Grotesk', sans-serif;
  --body:'IBM Plex Sans', sans-serif;
  --mono:'IBM Plex Mono', monospace;

  --container:1220px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--body);
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
ul{list-style:none;}

.wrap{max-width:var(--container); margin:0 auto; padding:0 32px;}

h1,h2,h3,h4{
  font-family:var(--display);
  color:var(--navy);
  line-height:1.12;
  letter-spacing:-0.01em;
}

.eyebrow{
  font-family:var(--mono);
  font-size:.74rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ocean);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  width:18px; height:1.5px; background:var(--amber);
  display:inline-block;
}

::selection{ background:var(--amber); color:var(--navy); }

a:focus-visible, button:focus-visible{
  outline:2px solid var(--amber); outline-offset:3px; border-radius:2px;
}

@media (prefers-reduced-motion: reduce){ *{ transition:none !important; scroll-behavior:auto !important; } }

/* ==========================================================================
   NAV
   ========================================================================== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:82px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width:34px; height:34px; flex:0 0 auto; }
.brand-logo{
  height:40px; width:auto; max-width:150px;
  object-fit:contain; object-position:left center;
  flex:0 0 auto; display:block;
}
.brand-text{
  font-family:var(--display); font-weight:700; font-size:1.05rem;
  line-height:1.15; color:var(--navy);
}
.brand-text small{
  display:block; font-family:var(--mono); font-weight:400; font-size:.62rem;
  letter-spacing:.1em; color:var(--muted); text-transform:uppercase;
}

.navlinks{ display:flex; gap:36px; }
.navlinks a{
  font-size:.9rem; font-weight:500; color:var(--navy);
  position:relative; padding:6px 0;
}
.navlinks a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:2px;
  background:var(--amber); transition:width .2s ease;
}
.navlinks a:hover::after, .navlinks a.active::after{ width:100%; }
.navlinks a.active{ color:var(--ocean); }

.nav-cta{
  font-family:var(--mono); font-weight:600; font-size:.78rem;
  letter-spacing:.03em;
  background:var(--navy); color:var(--white);
  padding:11px 20px; border-radius:2px;
  border:1px solid var(--navy);
  transition:background .18s ease, color .18s ease, border-color .18s ease;
}
.nav-cta:hover{ background:var(--amber); border-color:var(--amber); color:var(--navy); }

.nav-toggle{ display:none; }

/* ==========================================================================
   HERO (shared shell — page-specific content sits inside)
   ========================================================================== */
.hero{
  position:relative;
  background:linear-gradient(180deg, var(--navy) 0%, var(--deep-sea) 100%);
  color:var(--white);
  overflow:hidden;
  padding:90px 0 110px;
}
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center;
  position:relative; z-index:2;
}
.hero .eyebrow{ color:var(--amber); }
.hero .eyebrow::before{ background:var(--ocean-light); }
.hero h1{
  color:var(--white); margin-top:18px;
  font-size:clamp(2.3rem, 4.6vw, 3.6rem);
  font-weight:700;
}
.hero .tagline{
  font-family:var(--display); font-style:normal; color:var(--ocean-light);
  font-size:clamp(1.1rem,2vw,1.35rem); margin-top:14px; font-weight:500;
}
.hero p.lede{
  margin-top:22px; max-width:52ch; color:#C9D9E6; font-size:1.05rem; line-height:1.65;
}
.hero-ctas{ margin-top:32px; display:flex; gap:16px; flex-wrap:wrap; }
.btn-primary{
  font-family:var(--mono); font-weight:600; font-size:.85rem; letter-spacing:.02em;
  background:var(--amber); color:var(--navy);
  padding:15px 26px; border-radius:2px; border:1px solid var(--amber);
  transition:transform .16s ease, box-shadow .16s ease;
  display:inline-block;
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 8px 20px rgba(255,177,0,.25); }
.btn-outline{
  font-family:var(--mono); font-weight:600; font-size:.85rem; letter-spacing:.02em;
  padding:15px 24px; border-radius:2px; border:1px solid rgba(255,255,255,.4);
  color:var(--white);
  transition:border-color .16s ease, background .16s ease;
}
.btn-outline:hover{ border-color:var(--white); background:rgba(255,255,255,.06); }

/* route-chart signature graphic */
.route-chart{ position:relative; height:340px; }
.route-chart svg{ width:100%; height:100%; }
.route-label{
  position:absolute; font-family:var(--mono); font-size:.68rem; color:#9FC1DA;
  letter-spacing:.05em; white-space:nowrap;
}
.hero-coords{
  margin-top:36px; font-family:var(--mono); font-size:.72rem; color:#8FB4CE;
  letter-spacing:.05em;
}

.hero-bg-lines{
  position:absolute; inset:0; z-index:1; opacity:.5;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0px, rgba(255,255,255,.035) 1px, transparent 1px, transparent 120px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0px, rgba(255,255,255,.035) 1px, transparent 1px, transparent 120px);
}

/* simple sub-page hero (no route chart, shorter) */
.hero.hero-sub{ padding:64px 0 76px; }
.hero.hero-sub .hero-grid{ grid-template-columns:1fr; }
.hero.hero-sub h1{ font-size:clamp(2rem,4.4vw,3rem); }

/* ==========================================================================
   SECTIONS
   ========================================================================== */
section{ padding:96px 0; position:relative; }
.section-head{ max-width:680px; margin-bottom:52px; }
.section-head h2{ font-size:clamp(1.9rem,3.4vw,2.6rem); margin-top:14px; }
.section-head p{ margin-top:16px; color:var(--muted); font-size:1.02rem; max-width:60ch; }

.section-alt{ background:var(--foam); }

/* waypoint divider used between major sections — the route-line motif continued */
.waypoint-rule{
  display:flex; align-items:center; gap:14px;
  max-width:var(--container); margin:0 auto; padding:0 32px;
}
.waypoint-rule::before, .waypoint-rule::after{
  content:''; flex:1; height:1px; background:var(--line);
}
.waypoint-rule .dot{
  width:7px; height:7px; border-radius:50%; background:var(--amber); flex:0 0 auto;
}

/* feature grid ("Why us") */
.feature-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.feature-card{
  background:var(--white); padding:34px 30px;
}
.feature-card .idx{
  font-family:var(--mono); font-size:.72rem; color:var(--ocean); letter-spacing:.1em;
}
.feature-card h3{ font-size:1.08rem; margin-top:14px; font-weight:600; }
.feature-card p{ margin-top:10px; color:var(--muted); font-size:.92rem; }

/* vision / mission */
.vm-grid{ display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.vm-card{
  background:var(--navy); color:var(--white);
  padding:42px 38px; border-radius:2px; position:relative;
}
.vm-card.mission{ background:var(--deep-sea); }
.vm-card .eyebrow{ color:var(--amber); }
.vm-card .eyebrow::before{ background:var(--ocean-light); }
.vm-card h3{ color:var(--white); font-size:1.5rem; margin-top:16px; }
.vm-card p{ margin-top:14px; color:#C9D9E6; font-size:.98rem; line-height:1.65; }

/* services grid (index) */
.services-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.service-card{
  border:1px solid var(--line); padding:36px 30px; position:relative;
  transition:border-color .2s ease, transform .2s ease;
}
.service-card:hover{ border-color:var(--ocean); transform:translateY(-4px); }
.service-num{ font-family:var(--mono); font-size:.72rem; color:var(--ocean); }
.service-card h3{ font-size:1.2rem; margin-top:16px; }
.service-card p{ margin-top:12px; color:var(--muted); font-size:.92rem; line-height:1.6; }
.service-link{
  margin-top:20px; display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:.78rem; color:var(--navy); font-weight:600;
}
.service-card:hover .service-link{ color:var(--ocean); }
.service-link .arrow{ transition:transform .2s ease; }
.service-card:hover .service-link .arrow{ transform:translateX(4px); }

/* generic content list (technical / crew / commercial detail pages) */
.detail-layout{ display:grid; grid-template-columns:.9fr 1.1fr; gap:60px; }
.detail-layout .lede{ font-size:1.12rem; color:var(--navy); line-height:1.65; font-weight:500;}
.detail-list{ display:flex; flex-direction:column; }
.detail-item{
  display:grid; grid-template-columns:32px 1fr; gap:18px;
  padding:22px 0; border-top:1px solid var(--line);
}
.detail-item:last-child{ border-bottom:1px solid var(--line); }
.detail-item .mark{ font-family:var(--mono); color:var(--amber); font-size:1rem; padding-top:2px;}
.detail-item p{ color:var(--ink); font-size:.98rem; line-height:1.6; }

/* CTA band */
.cta-band{
  background:var(--navy); color:var(--white); text-align:left;
}
.cta-band .wrap{
  display:flex; align-items:center; justify-content:space-between; gap:30px; flex-wrap:wrap;
}
.cta-band h2{ color:var(--white); font-size:clamp(1.7rem,3vw,2.3rem); max-width:20ch; }
.cta-band p{ color:#C9D9E6; margin-top:10px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer{ background:var(--navy); color:var(--white); padding:70px 0 28px; }
.footer-top{
  display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px;
  padding-bottom:44px; border-bottom:1px solid var(--line-dark);
}
.footer-brand .brand-text{ color:var(--white); }
.footer-brand .brand-text small{ color:#8FB4CE; }
.footer-brand p{ margin-top:16px; color:#9FC1DA; font-size:.92rem; max-width:34ch; line-height:1.6; }
.footer-col h4{
  font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--amber); margin-bottom:16px;
}
.footer-col a, .footer-col p{
  display:block; color:#C9D9E6; font-size:.92rem; margin-bottom:12px; line-height:1.5;
}
.footer-col a:hover{ color:var(--white); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; padding-top:24px;
  font-family:var(--mono); font-size:.72rem; color:#7B9BB5; flex-wrap:wrap; gap:10px;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 960px){
  .navlinks{ display:none; }
  .brand-logo{ height:32px; max-width:120px; }
  .hero-grid{ grid-template-columns:1fr; }
  .route-chart{ height:220px; margin-top:20px; }
  .feature-grid{ grid-template-columns:1fr 1fr; }
  .services-grid{ grid-template-columns:1fr; }
  .vm-grid{ grid-template-columns:1fr; }
  .detail-layout{ grid-template-columns:1fr; gap:36px; }
  .footer-top{ grid-template-columns:1fr; gap:32px; }
}
@media (max-width: 560px){
  .feature-grid{ grid-template-columns:1fr; }
  section{ padding:70px 0; }
}


/* ==========================================================================
   JS-driven enhancement hooks
   ========================================================================== */
.site-header.is-scrolled{
  box-shadow:0 6px 24px rgba(10,37,64,.08);
}
.detail-item.reveal{
  opacity:0; transform:translateY(14px);
  transition:opacity .5s ease, transform .5s ease;
}
.detail-item.reveal.is-visible{
  opacity:1; transform:translateY(0);
}

/* ==========================================================================
   GALLERY PAGE
   ========================================================================== */
.gallery-section{ padding-top:72px; }

.gallery-status{
  font-family:var(--mono); font-size:.85rem; color:var(--muted);
  padding:40px 0; text-align:center;
}
.gallery-status.is-error{ color:#C0392B; }

/* masonry-ish responsive grid */
.gallery-grid{
  columns:3 300px;
  column-gap:18px;
}
.gallery-item{
  break-inside:avoid;
  margin:0 0 18px;
  border:1px solid var(--line);
  background:var(--foam);
  overflow:hidden;
  cursor:zoom-in;
  position:relative;
  transition:border-color .2s ease, transform .2s ease;
}
.gallery-item:hover{ border-color:var(--ocean); transform:translateY(-3px); }
.gallery-item img{
  width:100%; height:auto; display:block;
  background:var(--foam);
}
.gallery-item figcaption{
  position:absolute; left:0; right:0; bottom:0;
  font-family:var(--mono); font-size:.72rem; letter-spacing:.02em;
  color:var(--white);
  padding:22px 14px 12px;
  background:linear-gradient(180deg, transparent, rgba(10,37,64,.82));
  opacity:0; transform:translateY(6px);
  transition:opacity .2s ease, transform .2s ease;
}
.gallery-item:hover figcaption,
.gallery-item:focus-visible figcaption{ opacity:1; transform:translateY(0); }

@media (max-width: 900px){ .gallery-grid{ columns:2 240px; } }
@media (max-width: 520px){ .gallery-grid{ columns:1; } }

/* lightbox */
.lightbox{
  position:fixed; inset:0; z-index:1000;
  background:rgba(6,20,36,.92);
  display:flex; align-items:center; justify-content:center;
  padding:40px;
  opacity:0; pointer-events:none;
  transition:opacity .2s ease;
}
.lightbox.is-open{ opacity:1; pointer-events:auto; }
.lightbox img{
  max-width:100%; max-height:82vh;
  object-fit:contain;
  border:1px solid rgba(255,255,255,.15);
}
.lightbox-caption{
  position:absolute; left:0; right:0; bottom:26px;
  text-align:center; color:#C9D9E6;
  font-family:var(--mono); font-size:.8rem; padding:0 40px;
}
.lightbox-btn{
  position:absolute; top:0; bottom:0; width:22%;
  border:0; background:transparent; cursor:pointer;
  color:#fff; font-size:2rem; opacity:.6;
  transition:opacity .15s ease;
  display:flex; align-items:center; justify-content:center;
}
.lightbox-btn:hover{ opacity:1; }
.lightbox-prev{ left:0; justify-content:flex-start; padding-left:24px; }
.lightbox-next{ right:0; justify-content:flex-end; padding-right:24px; }
.lightbox-close{
  position:absolute; top:20px; right:24px; width:auto;
  font-size:1.5rem; opacity:.8;
}
@media (max-width: 560px){
  .lightbox{ padding:16px; }
  .lightbox-btn{ font-size:1.5rem; }
}