:root {
  --blue: #1857b8;
  --blue-dark: #0d2d63;
  --green: #11a36a;
  --black: #101722;
  --ink: #172033;
  --muted: #647084;
  --line: #dbe5f0;
  --soft: #f4f8fc;
  --white: #ffffff;
  --shadow: 0 16px 38px rgba(16, 23, 34, .1);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px clamp(16px, 4vw, 52px);
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand img { width: 46px; height: 46px; object-fit: contain; }
.brand strong { display: block; color: var(--blue-dark); line-height: 1.1; }
.brand small { display: block; color: var(--muted); font-size: .76rem; }
.desktop-nav { display: flex; gap: 20px; color: var(--muted); font-weight: 700; }
.desktop-nav a:hover { color: var(--blue); }
.header-cta, .primary-btn, .search-panel button {
  border: 0;
  border-radius: var(--radius);
  background: var(--green);
  color: white;
  min-height: 42px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
}
.header-cta svg, .primary-btn svg { width: 18px; height: 18px; }

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
  align-items: center;
  gap: clamp(24px, 5vw, 68px);
  padding: clamp(34px, 6vw, 76px) clamp(16px, 4vw, 52px) 48px;
  background:
    linear-gradient(135deg, rgba(24, 87, 184, .11), rgba(17, 163, 106, .08)),
    var(--soft);
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 900;
}
h1, h2, h3 { margin: 0; color: var(--black); letter-spacing: 0; line-height: 1.08; }
h1 { font-size: clamp(2.3rem, 5.4vw, 5.5rem); max-width: 980px; }
h2 { font-size: clamp(1.55rem, 3vw, 2.7rem); }
h3 { font-size: 1.05rem; }
.hero-text { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.search-panel {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  max-width: 760px;
  padding: 8px;
  margin-top: 24px;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.search-panel svg { margin-left: 8px; color: var(--muted); }
.search-panel input { border: 0; outline: 0; min-height: 44px; width: 100%; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.trust-row span, .badge-stack span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--muted);
  font-weight: 800;
  font-size: .88rem;
}
.trust-row svg, .badge-stack svg { width: 18px; color: var(--green); }
.hero-media { display: grid; place-items: center; min-height: 440px; }
.device-shelf {
  width: min(100%, 440px);
  padding: 18px;
  border: 1px solid rgba(13,45,99,.15);
  border-radius: var(--radius);
  background: #101722;
  box-shadow: 0 28px 68px rgba(16,23,34,.28);
}
.screen-card {
  min-height: 230px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  gap: 6px;
  padding: 18px;
  color: white;
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(24,87,184,.95), rgba(17,163,106,.86)),
    url("ronetic-logo.png") center 35% / 118px no-repeat;
}
.status-dot { width: 11px; height: 11px; border-radius: 999px; background: #4ade80; }
.metric-row {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-radius: var(--radius);
  color: white;
  background: rgba(255,255,255,.08);
}
.metric-row span { color: rgba(255,255,255,.72); }

.section { padding: 56px clamp(16px, 4vw, 52px); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}
.section-head > p { max-width: 520px; color: var(--muted); margin: 0; }
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.category-card, .product-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}
.category-card {
  padding: 18px;
  display: grid;
  gap: 10px;
}
.category-card svg { color: var(--blue); width: 26px; height: 26px; }
.category-card p { color: var(--muted); margin: 0; font-size: .92rem; }
.products-section { background: var(--soft); }
.filter-bar { display: flex; gap: 10px; }
.filter-bar select {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 12px;
  background: white;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.product-card { overflow: hidden; display: flex; flex-direction: column; min-height: 100%; }
.product-image {
  height: 220px;
  display: grid;
  place-items: center;
  color: white;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-body { padding: 16px; display: grid; gap: 10px; flex: 1; }
.product-meta { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 9px;
  background: #eaf2ff;
  color: var(--blue-dark);
  font-size: .78rem;
  font-weight: 900;
}
.price { color: var(--blue); font-weight: 900; font-size: 1.2rem; }
.product-body p { margin: 0; color: var(--muted); }
.specs { margin: 0; padding-left: 18px; color: var(--muted); font-size: .9rem; }
.card-actions { display: grid; grid-template-columns: 1fr; gap: 9px; margin-top: auto; }
.whatsapp-btn, .pay-btn {
  border: 0;
  border-radius: var(--radius);
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: white;
  font-weight: 900;
}
.whatsapp-btn { background: var(--green); }
.pay-btn { background: var(--blue); }
.payment-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 48px clamp(16px, 4vw, 52px);
  background: var(--black);
  color: white;
}
.payment-band h2 { color: white; }
.payment-band p { color: rgba(255,255,255,.72); max-width: 720px; }
.badge-stack { display: grid; gap: 10px; }
.contact-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding: 18px clamp(16px, 4vw, 52px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.contact-strip strong { color: var(--blue-dark); }
.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--green);
  color: white;
  box-shadow: var(--shadow);
  z-index: 30;
}
.modal {
  width: min(680px, calc(100% - 24px));
  border: 0;
  border-radius: var(--radius);
  padding: 0;
  box-shadow: var(--shadow);
}
.modal::backdrop { background: rgba(16, 23, 34, .55); }
.modal form { padding: 22px; position: relative; }
.icon-btn {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
}
.close-modal { position: absolute; right: 14px; top: 14px; }
.muted, .helper { color: var(--muted); }
.payment-note {
  display: grid;
  gap: 4px;
  padding: 13px;
  margin-bottom: 14px;
  border: 1px solid #bfe8d7;
  border-radius: var(--radius);
  background: #eefbf5;
}
.payment-note p { margin: 0; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0; }
label { display: grid; gap: 6px; font-weight: 800; color: var(--black); }
input, select, textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 9px 11px;
}

@media (max-width: 920px) {
  .desktop-nav { display: none; }
  .hero, .payment-band { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .category-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .site-header { align-items: flex-start; }
  .header-cta { padding: 10px; }
  .header-cta { font-size: 0; }
  .search-panel { grid-template-columns: auto 1fr; }
  .search-panel button { grid-column: 1 / -1; width: 100%; }
  .section-head, .filter-bar { display: grid; align-items: stretch; }
  .category-grid, .product-grid, .form-grid { grid-template-columns: 1fr; }
  .card-actions { grid-template-columns: 1fr; }
}