/* ==========================================================================
   TEAM 37 — Design System
   "Drawing title block" identity for a piping/vessel engineering software
   distributor. Built as a layer on top of Bootstrap 5 (does not replace it).
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --navy:      #0B2545;
  --navy-2:    #123061;
  --navy-3:    #1B3E7A;
  --paper:     #F4F6F8;
  --paper-2:   #FFFFFF;
  --ink:       #16232E;
  --ink-soft:  #4B5A68;
  --line:      #C9D3DC;
  --line-soft: rgba(11,37,69,.08);
  --amber:     #E8A33D;
  --amber-dk:  #C67F1B;
  --radius:    2px;
}

/* ---------- Base ---------- */
body{
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper-2);
}
h1,h2,h3,h4,h5,.card-title,.blog-post-title{
  font-family: 'Space Grotesk', sans-serif;
  color: var(--navy);
  letter-spacing: -0.01em;
}
a{ color: var(--navy-3); }
a:hover{ color: var(--amber-dk); }
hr{ border-top: 2px solid var(--navy); opacity: 1; width: 48px; margin: .75rem 0 1.5rem; }

/* ---------- Header / Nav ---------- */
.site-header{
  background: var(--navy);
  border-bottom: 3px solid var(--amber);
  position: sticky;
  top: 0;
  z-index: 200;
}
.site-header__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem 0;
  gap: 1.5rem;
}
.brand{
  display: flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand__logo{
  width: 40px;
  height: 40px;
  object-fit: cover;
  border: 2px solid var(--amber);
}
.brand__name{
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: .04em;
}
.brand__name small{
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: .62rem;
  letter-spacing: .12em;
  color: var(--amber);
  text-transform: uppercase;
}
.site-nav{
  display: flex;
  align-items: center;
  gap: .25rem;
  flex-wrap: wrap;
}
.site-nav a{
  font-family: 'IBM Plex Mono', monospace;
  font-size: .78rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: #C9D6E5;
  text-decoration: none;
  padding: .5rem .65rem;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a.is-active{
  color: #fff;
  border-color: var(--amber);
}
.nav-toggle{
  display: none;
  background: transparent;
  border: 1px solid var(--line-soft);
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  padding: .3rem .6rem;
}
@media (max-width: 991px){
  .site-nav{
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    order: 3;
    border-top: 1px solid rgba(255,255,255,.12);
    margin-top: .65rem;
    padding-top: .5rem;
  }
  .site-nav.is-open{ display: flex; }
  .site-nav a{ padding: .6rem .25rem; border-bottom: 1px solid rgba(255,255,255,.08); }
  .nav-toggle{ display: block; }
  .site-header__inner{ flex-wrap: wrap; }
}

/* ---------- Hero (blueprint grid + title block) ---------- */
.hero{
  background-color: var(--navy);
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 34px 34px;
  background-position: center;
  position: relative;
  padding: 3.5rem 0;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(11,37,69,.94) 0%, rgba(11,37,69,.86) 100%);
}
.hero .container{ position: relative; }
.hero__grid{
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 900px){
  .hero__grid{ grid-template-columns: 1fr; }
}
.eyebrow{
  font-family: 'IBM Plex Mono', monospace;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: .6rem;
}
.hero h1{
  color: #fff;
  font-weight: 700;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  margin-bottom: .75rem;
}
.hero .lead{
  color: #CBD8E8;
  font-size: 1.05rem;
  max-width: 46ch;
}
.btn-cta{
  display: inline-block;
  margin-top: 1rem;
  padding: .65rem 1.4rem;
  background: var(--amber);
  color: var(--navy);
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background .15s, transform .15s;
}
.btn-cta:hover{ background: #fff; color: var(--navy); transform: translateY(-1px); }

/* Title block — the signature element */
.title-block{
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(232,163,61,.4);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .78rem;
}
.title-block__head{
  padding: .55rem .85rem;
  border-bottom: 1px solid rgba(232,163,61,.4);
  color: var(--amber);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-size: .68rem;
}
.title-block__row{
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem .85rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #AFC0D6;
}
.title-block__row:last-child{ border-bottom: none; }
.title-block__row strong{
  color: #fff;
  font-weight: 500;
  text-align: right;
}

/* ---------- Content sections ---------- */
.bg-light{ background: var(--paper) !important; }
article.blog-post p,
article.blog-post li{ color: var(--ink-soft); }
article.blog-post h2{
  font-size: 1.35rem;
  margin-top: 2rem;
}
article strong{ color: var(--ink); }

/* Spec / system-requirement tables styled as a stamped data sheet */
.table{
  border: 1px solid var(--line);
  background: #fff;
}
.table th, .table td{
  vertical-align: middle;
  border-color: var(--line) !important;
}
.table th[scope="row"]{
  width: 44px;
  background: var(--paper);
  text-align: center;
}
.table th[scope="row"] img{ filter: invert(14%) sepia(24%) saturate(1200%) hue-rotate(180deg); opacity: .75; }

/* Nav tabs (integration.html) */
.nav-tabs{ border-bottom: 2px solid var(--navy); }
.nav-tabs .nav-link{
  font-family: 'IBM Plex Mono', monospace;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--ink-soft);
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
}
.nav-tabs .nav-link.active{
  color: var(--navy);
  background: transparent;
  border-bottom-color: var(--amber);
  font-weight: 600;
}

/* ---------- Product sheet cards (index.html) ---------- */
.sheet-card{
  background: #fff;
  border: 1px solid var(--line);
  margin-bottom: 1.75rem;
  position: relative;
  overflow: hidden;
}
.sheet-card__tag{
  position: absolute;
  top: 0; left: 0;
  background: var(--navy);
  color: var(--amber);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .68rem;
  letter-spacing: .08em;
  padding: .3rem .6rem;
  z-index: 2;
}
.sheet-card img{ height: 100%; object-fit: cover; min-height: 180px; }
.sheet-card .card-body{ padding: 1.5rem; }
.sheet-card .card-title{
  font-size: 1.15rem;
  margin-bottom: .6rem;
  padding-top: .5rem;
}
.sheet-card .card-text{ color: var(--ink-soft); font-size: .93rem; }
.sheet-card .btn-primary{
  background: var(--navy);
  border-color: var(--navy);
  font-family: 'IBM Plex Mono', monospace;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  border-radius: var(--radius);
}
.sheet-card .btn-primary:hover{ background: var(--amber-dk); border-color: var(--amber-dk); color: var(--navy); }

/* Generic bootstrap button repaint (product pages "Request info", etc.) */
.btn-primary{
  background: var(--navy);
  border-color: var(--navy);
  border-radius: var(--radius);
}
.btn-primary:hover{ background: var(--amber-dk); border-color: var(--amber-dk); }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--navy);
  color: #C9D6E5;
  font-family: 'IBM Plex Mono', monospace;
  font-size: .82rem;
  padding: 2rem 0;
  border-top: 3px solid var(--amber);
}
.site-footer a{ color: #fff; }
.site-footer a:hover{ color: var(--amber); }