/* ===========================
   A&J Tech — styles.css
   =========================== */

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

:root {
  --navy:   #0f172a;
  --slate:  #1e293b;
  --blue:   #3b82f6;
  --blue-d: #2563eb;
  --cyan:   #06b6d4;
  --text:   #f1f5f9;
  --muted:  #94a3b8;
  --border: rgba(255,255,255,0.08);
  --card-bg: rgba(255,255,255,0.04);
  --radius: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
  text-decoration: none;
}

.logo-mark {
  font-size: 1.3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
}

.nav nav {
  display: flex;
  gap: 28px;
}

.nav nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav nav a:hover { color: var(--text); }

/* ---- Hero ---- */
.hero {
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59,130,246,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 50%, rgba(6,182,212,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--cyan);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-sub {
  max-width: 560px;
  margin: 0 auto 40px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-d));
  color: #fff;
  box-shadow: 0 0 24px rgba(59,130,246,0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 32px rgba(59,130,246,0.4);
}

.btn-secondary {
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
}

/* ---- Sections ---- */
.section {
  padding: 96px 0;
}

.section-alt {
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto;
}

/* ---- Cards ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: rgba(59,130,246,0.3);
  transform: translateY(-2px);
}

.card.featured {
  background: rgba(59,130,246,0.07);
  border-color: rgba(59,130,246,0.25);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-link {
  color: var(--cyan);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: opacity 0.2s;
}

.card-link:hover { opacity: 0.75; }

/* ---- About ---- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-text strong { color: var(--text); }

.about-list {
  list-style: none;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-list li {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Map visual */
.about-visual {
  display: flex;
  justify-content: center;
}

.map-preview {
  background: rgba(59,130,246,0.08);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
  width: 100%;
  max-width: 340px;
}

.map-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.map-dot {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(59,130,246,0.4), rgba(6,182,212,0.4));
  animation: pulse 3s ease-in-out infinite;
}

.map-dot:nth-child(even) { animation-delay: 0.5s; }
.map-dot:nth-child(3n)   { animation-delay: 1s; }

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(0.96); }
  50%       { opacity: 1;   transform: scale(1); }
}

.map-label {
  color: var(--cyan);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---- Contact ---- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.contact-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.2s;
}

.contact-card:hover { border-color: rgba(59,130,246,0.3); }

.contact-icon { font-size: 1.8rem; margin-bottom: 12px; }

.contact-card h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 8px;
}

.contact-card a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.contact-card a:hover { color: var(--cyan); }

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .hero { padding: 80px 0 64px; }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual { order: -1; }

  .nav nav { gap: 16px; }

  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .nav nav { display: none; }

  .hero-cta { flex-direction: column; align-items: center; }

  .btn { width: 100%; justify-content: center; max-width: 280px; }
}