/* ============================================================
   Envisage Technology Zambia — Global Styles
   ============================================================ */

/* Self-hosted Inter variable font (preferred — avoids 3rd-party request).
   File: /assets/fonts/Inter-var.woff2
   Download: https://github.com/rsms/inter/releases (Inter.var.woff2 → rename to Inter-var.woff2)
   If the file is absent the Google Fonts @import below acts as fallback. */
@font-face {
  font-family: 'Inter';
  src: url('/assets/fonts/Inter-var.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&display=swap');
@import 'variables.css';

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--clr-dark-3);
  background: var(--clr-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Page fade-in */
body { animation: pageFadeIn 0.35s ease both; }
@keyframes pageFadeIn { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  body { animation: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--clr-primary); text-decoration: none; }
a:hover { color: var(--clr-primary-dark); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }
h1,h2,h3,h4,h5,h6 { line-height: var(--line-height-tight); color: var(--clr-dark); font-weight: var(--font-weight-bold); }

/* ── Skip link ───────────────────────────────────────────── */
.skip-link {
  position: absolute; left: -9999px; top: var(--space-4);
  background: var(--clr-primary); color: var(--clr-white);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-md);
  font-weight: var(--font-weight-semi); z-index: var(--z-toast);
}
.skip-link:focus { left: var(--space-4); }

/* ── Container ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Section spacing ─────────────────────────────────────── */
.section { padding-block: var(--space-20); }
.section--sm { padding-block: var(--space-12); }
.section--lg { padding-block: var(--space-32); }
.section--dark { background: var(--clr-dark); color: var(--clr-white); }
.section--grey { background: var(--clr-bg); }
.section--blue { background: var(--clr-primary); color: var(--clr-white); }

/* ── Section headings ────────────────────────────────────── */
.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-3);
}
.section-title {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: var(--font-weight-black);
  color: var(--clr-dark);
  margin-bottom: var(--space-4);
}
.section-title--white { color: var(--clr-white); }
.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--clr-mid);
  max-width: 600px;
  line-height: var(--line-height-relaxed);
}
.section-header { margin-bottom: var(--space-12); }
.section-header--center { text-align: center; }
.section-header--center .section-subtitle { margin-inline: auto; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semi);
  line-height: 1;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn--primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  color: var(--clr-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-blue);
}
.btn--accent {
  background: var(--clr-accent);
  color: var(--clr-white);
  border-color: var(--clr-accent);
}
.btn--accent:hover {
  background: var(--clr-accent-dark);
  border-color: var(--clr-accent-dark);
  color: var(--clr-white);
  transform: translateY(-1px);
}
.btn--outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn--outline:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
}
.btn--outline-white {
  background: transparent;
  color: var(--clr-white);
  border-color: var(--clr-white);
}
.btn--outline-white:hover {
  background: var(--clr-white);
  color: var(--clr-primary);
}
.btn--whatsapp {
  background: #25D366;
  color: var(--clr-white);
  border-color: #25D366;
}
.btn--whatsapp:hover { background: #1fba58; border-color: #1fba58; color: var(--clr-white); }
.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--font-size-base); }
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--font-size-xs); }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--clr-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ── Badge ───────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  letter-spacing: 0.04em;
}
.badge--blue { background: var(--clr-primary-light); color: var(--clr-primary); }
.badge--primary { background: var(--clr-primary-light); color: var(--clr-primary); }
.badge--accent { background: var(--clr-accent-light); color: var(--clr-accent); }
.badge--green { background: #dcfce7; color: #16a34a; }
.badge--dark { background: rgba(13,17,23,0.08); color: var(--clr-dark); }
.badge--popular { background: var(--clr-accent); color: var(--clr-white); }

/* ── Form elements ───────────────────────────────────────── */
.form-group { margin-bottom: var(--space-5); }
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--clr-dark-3);
  margin-bottom: var(--space-2);
}
.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--clr-dark);
  background: var(--clr-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-control:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(0,120,212,0.12);
}
.form-control.error { border-color: var(--clr-error); }
.form-error {
  font-size: var(--font-size-xs);
  color: var(--clr-error);
  margin-top: var(--space-1);
  display: none;
}
.form-error.visible { display: block; }
textarea.form-control { resize: vertical; min-height: 140px; }

/* ── Utility ─────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-auto     { margin-top: auto; }
.sr-only     { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.hidden      { display: none !important; }
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2       { gap: var(--space-2); }
.gap-4       { gap: var(--space-4); }

/* ── Navigation ──────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--clr-white);
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  transition: height var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  align-items: center;
}
.site-nav.scrolled {
  height: var(--nav-height-scroll);
  border-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  color: var(--clr-primary);
  flex-shrink: 0;
}
.nav-logo svg { width: 28px; height: 28px; flex-shrink: 0; }
.nav-logo span { color: var(--clr-dark); }
.nav-logo-full { display: block; height: 44px; width: auto; }
.nav-logo-icon { display: none; }
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--clr-dark-3);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-primary);
  transition: width var(--transition-base);
}
.nav-links a:hover,
.nav-links a.active { color: var(--clr-primary); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-cta { margin-left: var(--space-4); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--clr-dark);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  pointer-events: none;
}
.nav-drawer-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13,17,23,0.6);
  opacity: 0;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(4px);
}
.nav-drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(320px, 85vw);
  background: var(--clr-white);
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
}
.nav-drawer.open { pointer-events: all; }
.nav-drawer.open .nav-drawer-overlay { opacity: 1; }
.nav-drawer.open .nav-drawer-panel { transform: translateX(0); }
.nav-drawer-close {
  align-self: flex-end;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--clr-bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--clr-mid);
  margin-bottom: var(--space-4);
}
.nav-drawer-link {
  display: block;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--clr-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.nav-drawer-link:hover { color: var(--clr-primary); }
.nav-drawer-cta { margin-top: var(--space-6); }

/* ── Page hero (inner pages) ─────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-dark-2) 60%, #0d2040 100%);
  padding-block: var(--space-24) var(--space-16);
  color: var(--clr-white);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,120,212,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  font-weight: var(--font-weight-semi);
  margin-bottom: var(--space-3);
}
.page-hero h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-black);
  color: var(--clr-white);
  max-width: 700px;
  margin-bottom: var(--space-4);
}
.page-hero p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.75);
  max-width: 580px;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.5);
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--clr-white); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }

/* ── WhatsApp float ──────────────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: var(--z-toast);
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-white);
  font-size: 26px;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
}
.whatsapp-float::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 3px solid rgba(37,211,102,0.4);
  animation: waPulse 2.5s ease-out infinite;
}
@keyframes waPulse {
  0%   { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.7); opacity: 0; }
}
.whatsapp-float-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--clr-dark);
  color: var(--clr-white);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.whatsapp-float:hover .whatsapp-float-tooltip { opacity: 1; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.7);
  padding-top: var(--space-20);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  color: var(--clr-white);
  text-decoration: none;
  margin-bottom: var(--space-4);
}
.footer-logo svg { width: 24px; height: 24px; }
.footer-about p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-5);
}
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-3);
}
.footer-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; color: var(--clr-primary); }
.footer-contact-item a { color: rgba(255,255,255,0.7); }
.footer-contact-item a:hover { color: var(--clr-white); }
.footer-heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semi);
  color: var(--clr-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}
.footer-links li { margin-bottom: var(--space-3); }
.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--clr-white); }
.social-row {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.social-icon {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 16px;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.social-icon:hover { background: var(--clr-primary); color: var(--clr-white); }
.social-icon--light {
  background: var(--clr-bg);
  color: var(--clr-mid);
  border: 1px solid var(--clr-border);
}
.social-icon--light:hover { background: var(--clr-primary); color: var(--clr-white); border-color: var(--clr-primary); }
.newsletter-form { display: flex; gap: var(--space-2); }
.newsletter-form input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.07);
  color: var(--clr-white);
  font-size: var(--font-size-sm);
  outline: none;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,0.4); }
.newsletter-form input:focus { border-color: var(--clr-primary); }
.newsletter-note { font-size: var(--font-size-xs); color: rgba(255,255,255,0.35); margin-top: var(--space-2); }
.footer-bottom {
  padding-block: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-bottom p { font-size: var(--font-size-xs); color: rgba(255,255,255,0.35); }
.footer-bottom-links {
  display: flex;
  gap: var(--space-5);
}
.footer-bottom-links a {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.35);
  text-decoration: none;
}
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

/* ── Scroll-reveal animation ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-logo-full { display: none; }
  .nav-logo-icon { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}
@media (max-width: 767px) {
  :root { --container-pad: var(--space-4); }
  .section { padding-block: var(--space-12); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom-links { justify-content: center; }
}