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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
}

a {
  text-decoration: none;
}

ul {
  list-style: none;
}

.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a, #1e293b, #0f172a);
  padding: 20px 7%;
  display: flex;
  flex-direction: column;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  position: relative;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: #38bdf8;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: #e2e8f0;
  font-weight: 600;
  transition: 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: #38bdf8;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #e2e8f0;
  font-size: 1.8rem;
  cursor: pointer;
}

.hero-content {
  max-width: 750px;
  margin: auto 0;
  padding: 70px 0;
}

.tag {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid rgba(56, 189, 248, 0.4);
  background: rgba(56, 189, 248, 0.08);
  color: #38bdf8;
  border-radius: 999px;
  margin-bottom: 18px;
  font-size: 0.95rem;
}

.hero-content h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero-text {
  color: #cbd5e1;
  max-width: 650px;
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.hero-btn,
.cta-btn,
.details-btn {
  display: inline-block;
  border: none;
  cursor: pointer;
  transition: 0.3s ease;
}

.hero-btn,
.cta-btn {
  background: #38bdf8;
  color: #0f172a;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 700;
}

.hero-btn:hover,
.cta-btn:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

/* BUSINESS SECTION */
.business-section {
  padding: 80px 7%;
  background: #111827;
}

.section-subtitle {
  text-align: center;
  color: #38bdf8;
  margin-bottom: 8px;
  font-weight: 700;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 35px;
}

/* FILTER BUTTONS */
.filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 35px;
}

.filter-btn {
  background: #1e293b;
  color: #e2e8f0;
  border: 1px solid #334155;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: 0.3s ease;
  font-weight: 600;
}

.filter-btn:hover,
.filter-btn.active {
  background: #38bdf8;
  color: #0f172a;
  border-color: #38bdf8;
}

/* LEFT / RIGHT LAYOUT */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.split-column {
  background: #162033;
  border: 1px solid #334155;
  border-radius: 22px;
  padding: 24px;
}

.column-header {
  margin-bottom: 22px;
}

.column-header h3 {
  font-size: 1.7rem;
  color: #f8fafc;
  margin-bottom: 6px;
}

.column-header p {
  color: #cbd5e1;
}

/* 3 COLUMN GRID */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.service-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 18px;
  padding: 22px;
  transition: 0.3s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: #38bdf8;
}

.service-card.hidden {
  display: none;
}

.category-badge {
  display: inline-block;
  padding: 6px 12px;
  margin-bottom: 14px;
  background: rgba(56, 189, 248, 0.1);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.service-card h4 {
  margin-bottom: 12px;
  color: #f8fafc;
  font-size: 1.15rem;
}

.service-card p {
  color: #cbd5e1;
  margin-bottom: 18px;
  font-size: 0.98rem;
}

.details-btn {
  background: #38bdf8;
  color: #0f172a;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
}

.details-btn:hover {
  opacity: 0.9;
}

/* CTA */
.cta-section {
  padding: 80px 7%;
  background: #0f172a;
}

.cta-box {
  max-width: 850px;
  margin: 0 auto;
  text-align: center;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: 1px solid #334155;
  border-radius: 20px;
  padding: 40px 24px;
}

.cta-box h2 {
  margin-bottom: 12px;
  font-size: 2rem;
}

.cta-box p {
  color: #cbd5e1;
  margin-bottom: 22px;
}

/* MODAL */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  padding: 20px;
  z-index: 999;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 28px;
  max-width: 500px;
  width: 100%;
  position: relative;
}

.modal-content h3 {
  margin-bottom: 12px;
  color: #38bdf8;
}

.modal-content p {
  color: #e2e8f0;
}

.close-btn {
  position: absolute;
  top: 12px;
  right: 16px;
  background: transparent;
  border: none;
  color: #e2e8f0;
  font-size: 1.8rem;
  cursor: pointer;
}

/* RESPONSIVE */
@media (max-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .split-layout {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    right: 0;
    top: 60px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 15px;
    width: 200px;
  }

  .nav-links.show {
    display: flex;
  }

  .hero-content h1 {
    font-size: 2.3rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}