/* ===========================================================
   Calvern — Design tokens
   Palette: deep navy #1f3a5f, mid navy #2c5282, ink #15202b,
            paper #f7f8fa, line #c9d3de, accent (copper) #c9762f
   Type: Display = "Space Grotesk" (technical, geometric)
         Body    = "Inter"
         Mono    = "IBM Plex Mono" (labels, eyebrows, specs)
   =========================================================== */

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

:root{
  --navy-deep:#1f3a5f;
  --navy-mid:#2c5282;
  --ink:#15202b;
  --paper:#f7f8fa;
  --line:#c9d3de;
  --line-soft:#dde4ec;
  --accent:#c9762f;
  --white:#ffffff;
}

*{ margin:0; padding:0; box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
}

a{ color:inherit; text-decoration:none; }

.mono{
  font-family:'IBM Plex Mono', monospace;
}

/* ---------- Eyebrow / spec label ---------- */
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:0.5rem;
}
.eyebrow::before{
  content:'';
  width:7px; height:7px;
  border:1.5px solid var(--accent);
  transform:rotate(45deg);
  flex-shrink:0;
}

/* ---------- Nav ---------- */
nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:1.4rem 6%;
  position:relative;
  z-index:10;
}

.logo{
  font-family:'Space Grotesk', sans-serif;
  font-size:1.3rem;
  font-weight:700;
  letter-spacing:0.01em;
  color:var(--white);
  text-decoration:none;
}
.logo span{ color:var(--accent); }

.nav-links{
  list-style:none;
  display:flex;
  gap:2.4rem;
}
.nav-links a{
  color:rgba(255,255,255,0.85);
  text-decoration:none;
  font-size:0.92rem;
  font-weight:500;
  position:relative;
  padding-bottom:4px;
  transition:color 0.2s;
}
.nav-links a::after{
  content:'';
  position:absolute;
  left:0; bottom:0;
  width:0; height:1.5px;
  background:var(--accent);
  transition:width 0.25s ease;
}
.nav-links a:hover{ color:var(--white); }
.nav-links a:hover::after{ width:100%; }
.nav-links a.active::after{ width:100%; }

/* ---------- Hero (blueprint grid signature) ---------- */
.hero{
  background:
    linear-gradient(160deg, var(--navy-deep) 0%, var(--navy-mid) 100%);
  position:relative;
  min-height:88vh;
  display:flex;
  flex-direction:column;
  overflow:hidden;
}

.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size:42px 42px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.15));
  pointer-events:none;
}

.hero::after{
  content:'';
  position:absolute;
  top:-180px; right:-180px;
  width:480px; height:480px;
  border:1px solid rgba(255,255,255,0.08);
  border-radius:50%;
  pointer-events:none;
}

.hero-content{
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:2rem 6% 4rem;
  position:relative;
  z-index:2;
  max-width:760px;
}

.hero-content .eyebrow{ color:var(--accent); margin-bottom:1.4rem; }
.hero-content .eyebrow::before{ background:var(--accent); }

.hero-content h1{
  font-family:'Space Grotesk', sans-serif;
  font-size:3.4rem;
  font-weight:700;
  line-height:1.08;
  color:var(--white);
  letter-spacing:-0.01em;
  margin-bottom:1.3rem;
}
.hero-content h1 em{
  font-style:normal;
  color:var(--accent);
}

.hero-content p{
  font-size:1.1rem;
  color:rgba(255,255,255,0.78);
  max-width:520px;
  margin-bottom:2.2rem;
}

.hero-actions{ display:flex; gap:1rem; flex-wrap:wrap; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding:0.85rem 1.7rem;
  border-radius:2px;
  text-decoration:none;
  font-weight:600;
  font-size:0.92rem;
  transition:transform 0.18s ease, box-shadow 0.18s ease;
  border:1.5px solid transparent;
}
.btn:hover{ transform:translateY(-2px); }

.btn-primary{
  background:var(--accent);
  color:var(--white);
}
.btn-primary:hover{ box-shadow:0 8px 20px rgba(201,118,47,0.35); }

.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,0.35);
  color:var(--white);
}
.btn-ghost:hover{ border-color:var(--white); }

.btn-outline{
  background:transparent;
  border-color:var(--navy-deep);
  color:var(--navy-deep);
}
.btn-outline:hover{ background:var(--navy-deep); color:var(--white); }

/* ---------- Sections ---------- */
.section{
  padding:5.5rem 6%;
  max-width:1080px;
  margin:0 auto;
}
.section.alt{
  max-width:100%;
  background:var(--white);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.section.alt > *{
  max-width:1080px;
  margin-left:auto;
  margin-right:auto;
}

.section-head{ margin-bottom:2.6rem; max-width:560px; }
.section-head .eyebrow{ margin-bottom:0.8rem; }
.section-head h2{
  font-family:'Space Grotesk', sans-serif;
  font-size:2.1rem;
  font-weight:700;
  color:var(--navy-deep);
  letter-spacing:-0.01em;
}
.section-head p{ color:#4a5568; margin-top:0.7rem; font-size:1.02rem; }

/* ---------- Cards (spec-sheet style w/ corner ticks) ---------- */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(230px, 1fr));
  gap:1.5rem;
}

.card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  padding:2rem 1.8rem;
  transition:border-color 0.2s, box-shadow 0.2s;
}
.card-link{ display:none; }
.card:has(.card-link):hover{
  border-color:var(--accent);
  box-shadow:0 4px 16px rgba(0,0,0,0.08);
  cursor:pointer;
}
.card::before, .card::after{
  content:'';
  position:absolute;
  width:10px; height:10px;
  border-top:1.5px solid var(--accent);
  border-left:1.5px solid var(--accent);
}
.card::before{ top:-1px; left:-1px; }
.card::after{
  top:auto; left:auto;
  bottom:-1px; right:-1px;
  border-top:none; border-left:none;
  border-bottom:1.5px solid var(--accent);
  border-right:1.5px solid var(--accent);
}

.card .tag{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.7rem;
  color:var(--accent);
  letter-spacing:0.08em;
  margin-bottom:0.7rem;
  display:block;
}

.card h3{
  font-family:'Space Grotesk', sans-serif;
  font-size:1.15rem;
  color:var(--navy-deep);
  margin-bottom:0.6rem;
}
.card p{ color:#4a5568; font-size:0.95rem; }

/* ---------- Contact ---------- */
.contact-grid{
  display:flex;
  flex-wrap:wrap;
  gap:3rem;
  align-items:flex-start;
}
.contact-item{ min-width:200px; }
.contact-item .eyebrow{ margin-bottom:0.5rem; color:var(--navy-mid); }
.contact-item .eyebrow::before{ background:var(--navy-mid); }
.contact-item a, .contact-item span{
  font-family:'Space Grotesk', sans-serif;
  font-size:1.15rem;
  color:var(--navy-deep);
  text-decoration:none;
}

/* ---------- Footer ---------- */
footer{
  text-align:center;
  padding:2.4rem;
  background:var(--ink);
  color:rgba(255,255,255,0.55);
  font-size:0.85rem;
  font-family:'IBM Plex Mono', monospace;
}
footer a{ color:rgba(255,255,255,0.75); text-decoration:none; }
footer a:hover{ color:var(--accent); }

/* ---------- Sub-page header (compact hero variant) ---------- */
.hero.compact{ min-height:38vh; }
.hero.compact .hero-content{ padding-top:1.5rem; padding-bottom:2.5rem; }
.hero.compact h1{ font-size:2.4rem; }

/* ---------- Responsive ---------- */
@media (max-width:760px){
  .nav-links{ display:none; }
  .hero-content h1{ font-size:2.3rem; }
  .hero.compact h1{ font-size:1.9rem; }
  .section{ padding:4rem 7%; }
  .contact-grid{ gap:2rem; }
}