/*
Theme Name: Vertex OC — Clean Professional (v3)
Author: VOC.com.sg
Description: Clean, professional theme for Vertex Outsource Consultancy with CSS-only 3-image slider and pages scaffolded.
Version: 3.0
Text Domain: vertexoc-clean
*/
:root{--navy:#0B1B2B;--text:#0f172a;--muted:#334155;--bg:#F7FAFC;--cyan:#00D1D1;--white:#fff}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.6}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:var(--white);border-bottom:1px solid #e5e7eb;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-logo{height:58px;width:auto;border-radius:10px}
.brand-name{font-weight:800;letter-spacing:2px;color:#0B1B2B}
.site-nav{display:flex;gap:18px}
.site-nav a{color:#334155;text-decoration:none;padding:10px 12px;border-radius:12px}
.site-nav a:hover{background:#eef2f7}

/* Hero slider (CSS-only) */
.hero{position:relative;min-height:70vh;display:flex;align-items:center;overflow:hidden;background:#0b1b2b}
.hero .slides{position:absolute;inset:0;z-index:-2}
.hero .slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;animation:fadeHero 18s infinite}
.hero .slide-1{animation-delay:0s}
.hero .slide-2{animation-delay:6s}
.hero .slide-3{animation-delay:12s}
@keyframes fadeHero{0%{opacity:1}28%{opacity:1}33%{opacity:0}94%{opacity:0}100%{opacity:1}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(11,27,43,.55), rgba(11,27,43,.35));z-index:-1}
.hero-inner{color:#e6f0f7;max-width:780px;padding:82px 0}
.hero h1{font-size:clamp(30px,4vw,46px);margin:0 0 10px}
.hero p{font-size:clamp(16px,2.2vw,20px);opacity:.95;margin:0 0 24px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;text-decoration:none;border:1px solid transparent}
.btn.primary{background:var(--cyan);color:#00383a;font-weight:700}
.btn.ghost{background:transparent;color:#e6f0f7;border:1px solid #91cfd0}

/* Sections */
.section{padding:48px 0}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:20px;box-shadow:0 6px 18px rgba(0,0,0,.04)}
.card h3{margin:0 0 8px;color:var(--navy)}
.list{margin:0;padding-left:18px;color:var(--muted)}

/* Page hero */
.page-hero{position:relative;min-height:36vh;display:flex;align-items:center;background:#0b1b2b}
.page-hero .hero-inner{color:#e6f0f7;padding:64px 0}

/* Footer */
.site-footer{background:#0B1B2B;color:#c8d4df;margin-top:60px}
.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;flex-wrap:wrap}
.foot-logo{height:28px;border-radius:6px}
.foot-links{display:flex;gap:14px;flex-wrap:wrap}
.foot-links a{color:#c8d4df;text-decoration:none}
.foot-links a:hover{text-decoration:underline}

/* Responsive */
@media (max-width:800px){
  .site-nav{display:none}
  .pillars{grid-template-columns:1fr}
}