/* =============================================
   MATEO SHIJA — AI & DATA SPECIALIST
   Global Stylesheet
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&display=swap');

:root {
  --navy: #0a0f1e;
  --navy-mid: #111827;
  --navy-light: #1a2540;
  --card-bg: #141d30;
  --teal: #00c9a7;
  --teal-dim: #00a88a;
  --teal-glow: rgba(0, 201, 167, 0.15);
  --white: #f0f4f8;
  --muted: #8899aa;
  --border: rgba(0, 201, 167, 0.15);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* ─── Background Pattern ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(0,201,167,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 90%, rgba(0,100,200,0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ─── Typography ─── */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p { color: rgba(240,244,248,0.75); }
a { text-decoration: none; color: inherit; }

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,15,30,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--teal);
  object-fit: cover;
  background: var(--navy-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--teal);
  flex-shrink: 0;
}

.header-brand-text .name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--white);
  display: block;
}

.header-brand-text .title {
  font-size: 0.72rem;
  color: var(--teal);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.site-nav { display: flex; align-items: center; gap: 0.25rem; }

.site-nav a {
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.site-nav a:hover, .site-nav a.active {
  color: var(--white);
  background: var(--teal-glow);
}

.site-nav a.nav-cta {
  background: var(--teal);
  color: var(--navy);
  font-weight: 700;
  padding: 0.4rem 1rem;
}

.site-nav a.nav-cta:hover { background: var(--teal-dim); }

/* ─── Hamburger ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--teal-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,201,167,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(240,244,248,0.25);
}

.btn-outline:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-2px);
}

/* ─── Section Layout ─── */
.section {
  padding: 5rem 2rem;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

/* ─── Cards ─── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(0,201,167,0.35);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}

.card:hover::before { opacity: 1; }

/* ─── Grid ─── */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

/* ─── Tags ─── */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--teal-glow);
  color: var(--teal);
  border: 1px solid rgba(0,201,167,0.2);
}

/* ─── Page Hero ─── */
.page-hero {
  padding: 5rem 2rem 3rem;
  position: relative;
  z-index: 1;
}

.page-hero h1 { margin-bottom: 1rem; }
.page-hero p { font-size: 1.1rem; max-width: 600px; }

/* ─── Icon Box ─── */
.icon-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--teal-glow);
  border: 1px solid rgba(0,201,167,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

/* ─── Footer ─── */
.site-footer {
  background: var(--navy-mid);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 2rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto 2rem;
}

.footer-brand .name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.footer-brand p { font-size: 0.9rem; line-height: 1.7; }

.footer-links h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--teal);
  margin-bottom: 1rem;
}

.footer-links ul { list-style: none; }

.footer-links ul li { margin-bottom: 0.6rem; }

.footer-links ul li a {
  color: var(--muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links ul li a:hover { color: var(--white); }

.footer-bottom {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ─── WhatsApp Float ─── */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
  font-size: 1.6rem;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37,211,102,0.5);
}

/* ─── Divider ─── */
.divider {
  width: 48px;
  height: 3px;
  background: var(--teal);
  border-radius: 2px;
  margin: 1rem 0 1.5rem;
}

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(0,201,167,0.4); }
  70% { box-shadow: 0 0 0 12px rgba(0,201,167,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,201,167,0); }
}

.animate { animation: fadeUp 0.7s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ─── Form ─── */
.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-glow);
}

.form-group textarea { resize: vertical; min-height: 130px; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .site-nav { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--navy-mid); padding: 1rem; border-bottom: 1px solid var(--border); }
  .site-nav.open { display: flex; }
  .hamburger { display: flex; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .section { padding: 3.5rem 1.25rem; }
  .page-hero { padding: 3rem 1.25rem 2rem; }
}