/* ==========================================================================
   Centiljon — en del av InfraCom. Flersidig IT-konsult-sajt (centiljon.se).
   Brand: cyan-blå #4aacd1 (header + accent). Multi-page, samma mönster
   som datatal/teletek.
   ========================================================================== */
:root {
  --cyan:        #4aacd1;   /* Centiljon primär — header */
  --cyan-dark:   #2f8fb4;
  --cyan-deeper: #1f6f8f;
  --cyan-navy:   #143b4d;   /* mörk botten — footer/CTA */
  --cyan-soft:   #e9f5fa;
  --text-dark:   #1a1a1a;
  --text-mid:    #404040;
  --text-light:  #6b7280;
  --border:      #e2e8eb;
  --offwhite:    #f6f9fb;
  --white:       #ffffff;
  --radius:      14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Open Sans', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px; line-height: 1.6; color: var(--text-mid);
  background: var(--white); -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { color: var(--cyan-navy); line-height: 1.18; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: 44px; } h2 { font-size: 30px; } h3 { font-size: 20px; }
p { margin: 0 0 16px; }
a { color: var(--cyan-deeper); text-decoration: none; }
a:hover { color: var(--cyan-dark); }
strong { color: var(--text-dark); font-weight: 700; }
img { max-width: 100%; display: block; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* ---- Header (Centiljon-blå) ---- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--cyan); transition: box-shadow .2s ease; }
.site-header.is-scrolled { box-shadow: 0 4px 18px rgba(20,59,77,0.20); }
.header__inner { max-width: 1140px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.header__logo img { height: 32px; width: auto; }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { color: rgba(255,255,255,0.92); font-size: 15px; font-weight: 600; }
.main-nav a:hover, .main-nav a.is-active { color: #fff; }
.main-nav__cta { background: #fff; color: var(--cyan-deeper) !important; padding: 9px 18px; border-radius: 8px; }
.main-nav__cta:hover { background: var(--cyan-soft); }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; }

/* ---- Hero ---- */
.page-hero { background: linear-gradient(160deg, var(--cyan-soft) 0%, var(--white) 70%); padding: 72px 0 64px; }
.page-hero__inner { max-width: 1140px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.page-hero--centered .page-hero__inner { grid-template-columns: 1fr; text-align: center; max-width: 820px; }
.eyebrow { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--cyan-deeper); margin-bottom: 16px; }
.page-hero h1 { margin-bottom: 18px; }
.page-hero__lead { font-size: 19px; color: var(--text-mid); margin-bottom: 28px; }
.hero-cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.page-hero--centered .hero-cta-row { justify-content: center; }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 24px; border-radius: 8px; font-weight: 700; font-size: 15px; letter-spacing: .3px; transition: .15s; border: 2px solid transparent; cursor: pointer; }
.btn--primary { background: var(--cyan-dark); color: #fff; border-color: var(--cyan-dark); }
.btn--primary:hover { background: var(--cyan-deeper); border-color: var(--cyan-deeper); color: #fff; transform: translateY(-1px); }
.btn--outline { background: transparent; color: var(--cyan-navy); border-color: var(--border); }
.btn--outline:hover { border-color: var(--cyan); color: var(--cyan-deeper); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn--ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; }
.link-arrow { font-weight: 700; color: var(--cyan-deeper); display: inline-flex; align-items: center; gap: 6px; }
.link-arrow::after { content: "→"; transition: transform .15s; }
.link-arrow:hover::after { transform: translateX(3px); }

/* ---- Glyph panel (hero-grafik) ---- */
.glyph-panel { border-radius: 18px; padding: 56px; display: flex; align-items: center; justify-content: center; min-height: 280px;
  background: radial-gradient(circle at 30% 25%, rgba(74,172,209,0.12), transparent 60%), var(--cyan-soft); border: 1px solid var(--border); }
.glyph-panel svg { width: 120px; height: 120px; color: var(--cyan-deeper); }
.glyph-panel--navy { background: radial-gradient(circle at 30% 25%, rgba(255,255,255,0.08), transparent 60%), var(--cyan-navy); }
.glyph-panel--navy svg { color: #fff; }

/* ---- Sections ---- */
.feature-section { padding: 72px 0; }
.feature-section--offwhite { background: var(--offwhite); }
.section-title-center { text-align: center; margin-bottom: 14px; }
.section-title-center::after { content: ""; display: block; width: 56px; height: 4px; background: var(--cyan); border-radius: 2px; margin: 16px auto 0; }
.section-intro { text-align: center; max-width: 680px; margin: 0 auto 44px; color: var(--text-mid); font-size: 17px; }

/* ---- Capability strip (ljus) ---- */
.capability-strip { background: var(--cyan-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.capability-strip__inner { max-width: 1140px; margin: 0 auto; padding: 22px 24px; display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 40px; }
.capability-strip__item { color: var(--cyan-navy); font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.capability-strip__item::before { content: ""; width: 9px; height: 9px; border-radius: 2px; background: var(--cyan); transform: rotate(45deg); }

/* ---- Card grid ---- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 22px; }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 26px; transition: .2s; display: flex; flex-direction: column; }
.card:hover { transform: translateY(-3px); border-color: var(--cyan); box-shadow: 0 12px 28px rgba(74,172,209,0.16); }
.card__icon { width: 46px; height: 46px; border-radius: 10px; background: var(--cyan-soft); color: var(--cyan-deeper); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.card__icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 8px; }
.card p { font-size: 14.5px; margin-bottom: 16px; }
.card .link-arrow { margin-top: auto; font-size: 14.5px; }

/* ---- Split section ---- */
.split-section { padding: 72px 0; }
.split-section__inner { max-width: 1140px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split-section__text h2 { margin-bottom: 16px; }

/* ---- Bullet list ---- */
.bullet-list { list-style: none; margin: 0 0 22px; }
.bullet-list li { position: relative; padding-left: 28px; margin-bottom: 11px; color: var(--text-mid); }
.bullet-list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 11px; height: 11px; border-radius: 2px; background: var(--cyan); transform: rotate(45deg); }
.bullet-list li strong { color: var(--text-dark); }

/* ---- Prose (subpages) ---- */
.prose h2 { margin: 34px 0 14px; }
.prose h3 { margin: 24px 0 10px; }
.prose p { margin-bottom: 16px; }
.prose ul { margin: 0 0 18px; padding-left: 0; list-style: none; }
.prose ul li { position: relative; padding-left: 26px; margin-bottom: 9px; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: 9px; width: 10px; height: 10px; background: var(--cyan); border-radius: 2px; transform: rotate(45deg); }

/* ---- Contact cards ---- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 20px; }
.contact-card { border: 1px solid var(--border); border-radius: 12px; padding: 26px; background: #fff; }
.contact-card h3 { font-size: 17px; margin-bottom: 10px; }
.contact-card a { font-weight: 600; }

/* ---- CTA (ljus) ---- */
.cta-section { background: linear-gradient(160deg, var(--cyan-soft) 0%, var(--white) 100%); color: var(--text-mid); padding: 60px 0; border-top: 1px solid var(--border); }
.cta-section--centered { text-align: center; }
.cta-section__inner { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.cta-section h2 { color: var(--cyan-navy); margin-bottom: 12px; }
.cta-section p { color: var(--text-mid); margin-bottom: 26px; font-size: 17px; }
.cta-section .eyebrow { color: var(--cyan-deeper); }
.cta-section .btn--ghost { color: var(--cyan-navy); border-color: var(--border); }
.cta-section .btn--ghost:hover { background: transparent; border-color: var(--cyan); color: var(--cyan-deeper); }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---- Footer (ljus) ---- */
.site-footer { background: var(--offwhite); color: var(--text-mid); padding: 52px 0 28px; font-size: 14.5px; border-top: 1px solid var(--border); }
.footer__inner { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.footer__cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }
.footer__wordmark { display: inline-block; font-size: 22px; font-weight: 800; letter-spacing: 1px; color: var(--cyan-deeper); margin-bottom: 12px; }
.footer__brand p { font-size: 14px; max-width: 280px; color: var(--text-mid); }
.footer__col h4 { color: var(--cyan-navy); font-size: 14px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; }
.footer__col ul { list-style: none; }
.footer__col li { margin-bottom: 9px; }
.footer__col a { color: var(--text-mid); }
.footer__col a:hover { color: var(--cyan-deeper); }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 22px; font-size: 13px; color: var(--text-light); }
.footer__bottom a { color: var(--text-mid); }
.footer__bottom a:hover { color: var(--cyan-deeper); }

/* ---- Reveal ---- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: .08s; } .reveal--d2 { transition-delay: .16s; } .reveal--d3 { transition-delay: .24s; }

@media (max-width: 880px) {
  h1 { font-size: 34px; } h2 { font-size: 26px; }
  .page-hero__inner, .split-section__inner { grid-template-columns: 1fr; }
  .page-hero__image { order: -1; }
  .footer__cols { grid-template-columns: 1fr 1fr; }
  .burger { display: flex; }
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--cyan); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 0; }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 13px 24px; }
}
@media (max-width: 560px) { .footer__cols { grid-template-columns: 1fr; } }