/* ============================================================
   Assiko Ltd - official brand identity
   ============================================================ */

:root {
  --navy: #1a1a2e;
  --teal: #00b4a0;
  --teal-light: #00d4b4;
  --orange: #f5a623;
  --magenta: #e91e8c;
  --red: #e53935;
  --violet: #7c3aed;
  --white: #ffffff;
  --light-bg: #f8f9fa;
  --gray: #6b7280;
  --border: #e5e7eb;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { display: block; max-width: 100%; }

/* ----- Layout ----- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

section { padding: 80px 0; }

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.2s ease;
}
.btn-primary { background: var(--navy); color: var(--white); border-color: var(--navy); }
.btn-primary:hover { background: #2a2a48; transform: translateY(-2px); }
.btn-secondary { background: transparent; border: 1.5px solid var(--navy); color: var(--navy); }
.btn-secondary:hover { background: var(--navy); color: var(--white); transform: translateY(-2px); }
.btn-light { background: var(--white); color: var(--navy); border-color: var(--white); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 4px 20px rgba(0,0,0,0.2); }

/* ----- Labels ----- */
.label {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray);
  margin-bottom: 32px;
}
.label-teal { color: var(--teal); }

/* ----- Colour band signature ----- */
.color-band { display: flex; height: 4px; width: 100%; }
.color-band span { flex: 1; }
.color-band span:nth-child(1) { background: var(--teal); }
.color-band span:nth-child(2) { background: var(--teal-light); }
.color-band span:nth-child(3) { background: var(--orange); }
.color-band span:nth-child(4) { background: var(--magenta); }
.color-band span:nth-child(5) { background: var(--red); }
.color-band span:nth-child(6) { background: var(--violet); }

/* ----- Cards ----- */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  background: var(--white);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.navbar.scrolled {
  border-bottom: 1px solid var(--navy);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.navbar-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Brand / logo */
.brand { display: inline-flex; align-items: center; }
.brand img { height: 65px; display: block; }
.brand-mark { display: inline-flex; align-items: center; gap: 12px; }
.brand-band {
  display: inline-flex;
  flex-direction: column;
  width: 28px;
  height: 28px;
  border-radius: 5px;
  overflow: hidden;
}
.brand-band span {
  flex: 1;
  width: 100%;
  background: linear-gradient(90deg,
    var(--teal), var(--teal-light), var(--orange),
    var(--magenta), var(--red), var(--violet));
  background-size: 600% 100%;
  animation: bandFlow 6s linear infinite;
}
.brand-band span:nth-child(2) { animation-delay: -1s; }
.brand-band span:nth-child(3) { animation-delay: -2s; }
.brand-band span:nth-child(4) { animation-delay: -3s; }
.brand-band span:nth-child(5) { animation-delay: -4s; }
.brand-band span:nth-child(6) { animation-delay: -5s; }
@keyframes bandFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 600% 50%; }
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--navy);
}
.brand-text strong { font-weight: 700; }

/* Nav links */
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--navy); transition: color 0.2s ease; }
.nav-links a:not(.btn):hover { color: var(--teal); }
.nav-cta {
  background: #ffffff;
  color: #1a1a2e;
  border: 1.5px solid #1a1a2e;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 500;
  transition: 0.2s ease;
}
.nav-cta:hover {
  background: #1a1a2e;
  color: #ffffff;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  background: var(--white);
  padding: 152px 0 0;
}
.hero .container { padding-bottom: 80px; }
.pill {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--navy);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 500;
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 16px;
  color: var(--gray);
  max-width: 620px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }

/* Stats */
.stats { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.stat { display: flex; align-items: baseline; gap: 10px; }
.stat-num { font-size: 32px; font-weight: 700; color: var(--navy); }
.stat-label { font-size: 14px; color: var(--gray); }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

/* ============================================================
   SERVICES
   ============================================================ */
.services { background: var(--light-bg); }
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.service-card { border-top: 4px solid var(--border); }
.border-top-teal { border-top-color: var(--teal); }
.border-top-magenta { border-top-color: var(--magenta); }
.service-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 6px; }
.card-tag { font-size: 14px; color: var(--gray); margin-bottom: 24px; }
.ticks li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 15px;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 50%;
}
.ticks-teal li::before { background: var(--teal); }
.ticks-magenta li::before { background: var(--magenta); }
.card-link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.2s ease;
}
.card-link:hover { transform: translateX(4px); }
.link-teal { color: var(--teal); }
.link-magenta { color: var(--magenta); }

/* ============================================================
   APPROACH
   ============================================================ */
.approach { padding: 0; }
.approach-grid { display: grid; grid-template-columns: 1fr 1fr; }
.approach-left {
  background: var(--navy);
  color: var(--white);
  padding: 96px 64px;
}
.approach-left h2 {
  font-size: 34px;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 20px;
}
.approach-text {
  color: rgba(255,255,255,0.6);
  font-size: 16px;
  max-width: 460px;
  margin-bottom: 32px;
}
.approach-right {
  background: var(--light-bg);
  padding: 96px 64px;
}

/* Steps */
.steps { position: relative; }
.steps::before {
  content: "";
  position: absolute;
  left: 19px; top: 20px; bottom: 20px;
  width: 2px;
  background: var(--navy);
  opacity: 0.2;
}
.step {
  position: relative;
  display: flex;
  gap: 24px;
  padding-bottom: 36px;
}
.step:last-child { padding-bottom: 0; }
.step-num {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 40px; height: 40px;
  border: 2px solid var(--navy);
  border-radius: 50%;
  background: var(--light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--navy);
}
.step-body h4 { font-size: 18px; font-weight: 700; margin-bottom: 2px; }
.step-body p { color: var(--gray); font-size: 15px; }

/* ============================================================
   EXPERTISE
   ============================================================ */
.expertise { background: var(--white); }
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sector-card { border-left: 4px solid var(--border); }
.sector-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.sector-card p { color: var(--gray); font-size: 15px; }
.border-left-teal { border-left-color: var(--teal); }
.border-left-violet { border-left-color: var(--violet); }
.border-left-orange { border-left-color: var(--orange); }
.border-left-magenta { border-left-color: var(--magenta); }
.border-left-red { border-left-color: var(--red); }
.border-left-teal-light { border-left-color: var(--teal-light); }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--light-bg); }
.contact h2 { font-size: 36px; font-weight: 500; margin-bottom: 12px; }
.contact-sub { color: var(--gray); margin-bottom: 4px; }
.contact-email { margin-bottom: 40px; }
.contact-email a { color: var(--teal); font-weight: 600; }
.contact-email a:hover { text-decoration: underline; }

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 760px;
}
.field { display: flex; flex-direction: column; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: 15px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--white);
  color: var(--navy);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26,26,46,0.08);
}
.field textarea { resize: vertical; }
.form-footer { flex-direction: row; align-items: center; gap: 20px; }
.form-status { font-size: 14px; font-weight: 500; }
.form-status.success { color: var(--teal); }
.form-status.error { color: var(--red); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy); color: var(--white); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 64px;
  padding-bottom: 48px;
}
.footer-logo { color: var(--white); }
.footer-tagline { color: rgba(255,255,255,0.6); font-size: 15px; margin-top: 12px; }
.footer-cols { display: flex; gap: 80px; flex-wrap: wrap; }
.footer-col h4 { font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.6); font-size: 14px; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--white); }
.footer-legal {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  padding-bottom: 32px;
}
.footer-legal p { color: rgba(255,255,255,0.5); font-size: 13px; }

/* ============================================================
   FADE-IN
   ============================================================ */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .container { padding: 0 24px; }
  section { padding: 56px 0; }

  .nav-links {
    position: fixed;
    top: 72px; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    width: 100%;
    background: var(--white);
    padding: 28px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-cta { width: 100%; text-align: center; }
  .hamburger { display: flex; }

  .hero { padding-top: 120px; }
  .hero h1 { font-size: 36px; }
  .stats { gap: 20px; }
  .stat-divider { display: none; }

  .services-grid { grid-template-columns: 1fr; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-left, .approach-right { padding: 56px 24px; }
  .expertise-grid { grid-template-columns: 1fr; }

  .contact-form { grid-template-columns: 1fr; }
  .form-footer { flex-direction: column; align-items: flex-start; }

  .footer-cols { gap: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .brand-band span { animation: none; }
  html { scroll-behavior: auto; }
}