/* ============================================================
   OpsInsight — Site CSS
   Palette: warm terracotta accent + deep charcoal + cream
   ============================================================ */

:root{
  --ink:#1c1a17;
  --ink-soft:#4a453e;
  --cream:#faf6f0;
  --cream-2:#f2ece1;
  --charcoal:#181614;
  --charcoal-2:#242019;
  --terracotta:#c4622d;
  --terracotta-light:#e08a52;
  --amber:#e6a445;
  --border:#e7ded0;
  --border-dark:#38332c;
  --teal-deep:#0d3b3a;
  --teal:#155e56;
  --teal-light:#2f9c86;
  --border-teal:#1f6e63;
  --radius:14px;
  --shadow:0 10px 30px -12px rgba(28,26,23,0.18);
  --font:'Inter',system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--cream);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}

.wrap{max-width:1140px;margin:0 auto;padding:0 24px;}
.wrap-narrow{max-width:760px;}

.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;
  color:var(--terracotta);margin-bottom:12px;
}

h1,h2,h3{font-weight:800;letter-spacing:-0.02em;line-height:1.15;}
h2{font-size:clamp(28px,3.6vw,40px);margin-bottom:14px;}
h3{font-size:19px;margin-bottom:8px;}

.section-sub{color:var(--ink-soft);font-size:17px;max-width:640px;margin-bottom:44px;}
.section-dark .section-sub{color:#c9c2b6;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:14px 26px;border-radius:10px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--terracotta);color:#fff;box-shadow:0 8px 20px -8px rgba(196,98,45,0.55);}
.btn-primary:hover{background:var(--terracotta-light);}
.btn-ghost{background:transparent;color:var(--cream);border-color:rgba(250,246,240,0.35);}
.btn-ghost:hover{background:rgba(250,246,240,0.08);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--border);}
.btn-outline:hover{border-color:var(--terracotta);color:var(--terracotta);}
.section-dark .btn-outline{color:var(--cream);border-color:var(--border-dark);}
.section-dark .btn-outline:hover{border-color:var(--terracotta-light);color:var(--terracotta-light);}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#faf6f0;
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand-mark{font-size:20px;font-weight:900;letter-spacing:-0.02em;}
.brand-mark span{color:var(--terracotta);}
.brand-mark.small{font-size:16px;}

.main-nav{display:flex;align-items:center;gap:32px;font-weight:600;font-size:15px;}
.main-nav a{color:var(--ink-soft);transition:color .15s;}
.main-nav a:hover{color:var(--ink);}
.nav-cta{
  background:var(--ink);color:var(--cream)!important;padding:10px 18px;border-radius:8px;
}
.nav-cta:hover{background:var(--terracotta);}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;}

/* ---------- Hero ---------- */
.hero{
  background:radial-gradient(ellipse 900px 500px at 50% -10%, #fff2e4 0%, var(--cream) 60%);
  padding:96px 0 72px;text-align:center;
}
.hero-inner{max-width:760px;margin:0 auto;}
.hero h1{font-size:clamp(34px,5.2vw,58px);margin-bottom:20px;}
.hero-sub{font-size:19px;color:var(--ink-soft);max-width:600px;margin:0 auto 36px;}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:56px;}
.hero .btn-ghost{color:var(--ink);border-color:var(--border);}
.hero .btn-ghost:hover{border-color:var(--terracotta);color:var(--terracotta);background:transparent;}

.hero-stats{display:flex;gap:48px;justify-content:center;flex-wrap:wrap;}
.hero-stats div{display:flex;flex-direction:column;align-items:center;}
.hero-stats strong{font-size:24px;font-weight:800;color:var(--terracotta);}
.hero-stats span{font-size:13px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.5px;}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section-dark{background:var(--charcoal);color:var(--cream);}
.section-dark h2{color:var(--cream);}
.section-dark p{color:#c9c2b6;}

.section-calc{
  background:linear-gradient(160deg, var(--teal-deep) 0%, var(--teal) 55%, #1c7568 100%);
  color:var(--cream);
}
.section-calc h2{color:var(--cream);}
.section-calc p{color:#bfe4dc;}
.section-calc .eyebrow{color:var(--amber);}

/* ---------- Cards ---------- */
.grid-cards{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:12px;
}
.grid-cards-3{grid-template-columns:repeat(3,1fr);}

.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:transform .18s ease, box-shadow .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.section-dark .card{background:var(--charcoal-2);border-color:var(--border-dark);}
.section-dark .card p{color:#b8b1a5;}
.section-calc .card{background:rgba(255,255,255,0.06);border-color:var(--border-teal);backdrop-filter:none;}
.section-calc .card p{color:#bfe4dc;}
.section-calc .card-product .price{color:var(--amber);}
.section-calc .btn-outline{color:var(--cream);border-color:rgba(255,255,255,0.3);}
.section-calc .btn-outline:hover{border-color:var(--amber);color:var(--amber);}

.card-icon{font-size:34px;margin-bottom:16px;}
.card p{color:var(--ink-soft);font-size:14.5px;margin-bottom:20px;min-height:64px;}
.card-actions{display:flex;flex-wrap:wrap;gap:10px;}
.card-actions-col{flex-direction:column;}

.card-product .price{
  font-size:26px;font-weight:800;color:var(--terracotta-light);margin-bottom:18px;
}
.card-product .price span{font-size:13px;font-weight:600;color:#8a8378;margin-left:4px;}

.section-cta{
  margin-top:48px;padding:32px;border-radius:var(--radius);background:var(--cream-2);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
}
.section-cta p{font-weight:600;color:var(--ink);}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:8px;}
.step-num{
  width:44px;height:44px;border-radius:50%;background:var(--terracotta);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin-bottom:18px;
}
.step p{color:var(--ink-soft);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px 22px;
}
.faq-item summary{
  cursor:pointer;font-weight:700;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:'+';font-size:22px;color:var(--terracotta);font-weight:400;}
.faq-item[open] summary::after{content:'–';}
.faq-item p{margin-top:12px;color:var(--ink-soft);font-size:15px;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;}
.contact-card{
  background:rgba(255,255,255,0.06);border:1px solid var(--border-teal);border-radius:var(--radius);
  padding:30px;text-align:center;transition:transform .18s ease, border-color .18s ease;
}
.contact-card:hover{transform:translateY(-4px);border-color:var(--amber);}
.contact-card .icon{
  width:48px;height:48px;border-radius:50%;background:var(--terracotta);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
  margin:0 auto 16px;
}
.contact-card h3{color:var(--cream);}
.contact-card p{color:#bfe4dc;margin:0;min-height:0;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#a39d90;padding:36px 0;}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.footer-inner p{font-size:14px;}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .grid-cards-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}

@media (max-width:720px){
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;
    flex-direction:column;align-items:flex-start;padding:32px 24px;gap:22px;
    transform:translateX(100%);transition:transform .25s ease;
    z-index:99;box-shadow:-8px 0 30px rgba(28,26,23,0.12);
    font-size:19px;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-toggle{display:flex;position:relative;z-index:100;}
  .grid-cards{grid-template-columns:1fr;}
  .grid-cards-3{grid-template-columns:1fr;}
  .hero{padding:64px 0 48px;}
  .section{padding:64px 0;}
  .section-cta{flex-direction:column;align-items:flex-start;}
}