/* =========================================================
   ZACHA WEBSITE — STYLESHEET (v8.2 FINAL)
   Consolidated, clean baseline
   Scope: All pages
   ========================================================= */

/* ---------- RESET / BASE ---------- */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: #0f172a;
  line-height: 1.6;
  background: #ffffff;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- LAYOUT ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding-top: 2.5rem;
}

section {
  margin-bottom: 4rem;
}

h1, h2, h3 {
  color: #020617;
  line-height: 1.25;
}

h1 { margin-top: 0; }

/* ---------- HEADER / NAV ---------- */
header {
  border-bottom: 1px solid #e5e7eb;
}

#main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

#main-nav a {
  display: block;
  padding: 18px 0;
  text-decoration: none;
  font-weight: 500;
  color: #0f172a;
}

#main-nav a.active {
  border-bottom: 2px solid #0f172a;
}

/* ---------- HERO (HOME ONLY) ---------- */
#hero {
  background: linear-gradient(
      rgba(10, 25, 47, 0.65),
      rgba(10, 25, 47, 0.65)
    ),
    url("../images/banner.jpg") center/cover no-repeat;
  color: #ffffff;
  min-height: 42vh;
  max-height: 520px;
  padding: 72px 24px 64px;
}

#hero h1 {
  color: #ffffff;
}

#hero p {
  max-width: 720px;
}

/* Lift content closer after hero */
#hero + section {
  margin-top: 2rem;
}

/* ---------- TILE SYSTEM (SERVICES / PILLARS / ESG) ---------- */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  margin-top: 40px;
}

.tile {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 28px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.tile h3 {
  margin-top: 0;
  margin-bottom: 12px;
}

.tile p {
  margin: 0;
  color: #334155;
}

.tile:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

/* ---------- FOOTER ---------- */
footer {
  border-top: 1px solid #e5e7eb;
  padding: 24px 0;
  font-size: 0.9rem;
  color: #475569;
}

/* ---------- RESPONSIVE (GLOBAL) ---------- */
@media (max-width: 768px) {
  #main-nav ul {
    gap: 16px;
  }

  #hero {
    min-height: auto;
    padding: 56px 20px 48px;
  }
}

/* =========================================================
   OEM & PARTNERS / AUTHORISED RESELLER GRID (ACTIVE)
   ========================================================= */

.partners-section {
  padding: 70px 0;
  background-color: #ffffff;
}

.partners-section h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: #0f172a;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  align-items: center;
  justify-items: center;
}

.partners-grid img {
  width: 100%;
  max-width: 260px;
  height: auto;
  background: #ffffff;
  padding: 22px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-block; /* override global img rule */
}

.partners-grid img:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.12);
}

.partner-note {
  margin-top: 40px;
  text-align: center;
  font-size: 14px;
  color: #64748b;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 20px;
}

/* ---------- RESPONSIVE (PARTNERS) ---------- */
@media (max-width: 640px) {
  .partners-section h2 {
    font-size: 26px;
  }

  .partners-grid img {
    max-width: 220px;
    padding: 18px;
  }
}