:root {
  --navy-primary: #0a192f;
  --navy-light: #172a45;
  --black: #020c1b;
  --white: #ffffff;
  --text-slate: #495670;
  --navy-glow: rgba(10, 25, 47, 0.4);
  --white-glow: rgba(255, 255, 255, 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--white);
  color: var(--navy-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===================== NAVIGATION ===================== */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 8%;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(10, 25, 47, 0.05);
}

#logo h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

#nav-tabs {
  display: flex;
  gap: 30px;
}

#nav-tabs a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy-primary);
  transition: var(--transition);
  position: relative;
}

#nav-tabs a:hover, #nav-tabs a.active {
  opacity: 0.7;
}

#nav-tabs a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--navy-primary);
}

/* ===================== HERO SECTION ===================== */
#home {
  min-height: 100vh;
  padding: 140px 10% 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: radial-gradient(circle at top right, #f8faff 0%, #ffffff 100%);
}

.hero-badge-container {
  margin-bottom: 25px;
}

.premium-badge {
  background: var(--navy-primary);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  box-shadow: 0 4px 15px var(--navy-glow);
}

.hero-heading {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 25px;
  max-width: 900px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-slate);
  max-width: 650px;
  margin-bottom: 45px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  margin-bottom: 60px;
  z-index: 10;
}

/* Hero Points */
.hero-points {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

.point {
  background: var(--navy-primary);
  color: var(--white);
  padding: 12px 22px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}

.point:hover {
  box-shadow: 0 0 20px rgba(10, 25, 47, 0.25);
  background: var(--navy-light);
}

/* ===================== BUTTONS ===================== */
.btn {
  padding: 16px 32px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
  display: inline-block;
  border: none;
  cursor: pointer;
}

.btn-black {
  background: var(--black);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.btn-navy {
  background: var(--navy-primary);
  color: var(--white);
  box-shadow: 0 8px 20px var(--navy-glow);
}

.btn:hover {
  transform: translateY(-3px);
  filter: brightness(1.1);
  box-shadow: 0 12px 25px rgba(0,0,0,0.2);
}

/* ===================== SERVICE CARDS ===================== */
#services {
  padding: 100px 10%;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 60px;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--navy-primary);
  color: var(--white);
  padding: 50px 35px;
  border-radius: 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(255,255,255,0.05);
}

/* Hover Effect: Glow only, no movement */
.service-card:hover {
  box-shadow: 0 0 40px var(--navy-glow), 0 0 15px rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 18px;
  font-weight: 700;
}

.service-card p {
  font-size: 0.95rem;
  opacity: 0.85;
  margin-bottom: 30px;
}

.card-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  padding: 12px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  border: 1px solid rgba(255,255,255,0.2);
  transition: var(--transition);
}

.card-btn:hover {
  background: var(--white);
  color: var(--navy-primary);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

/* ===================== CONTACT SECTION ===================== */
#contact {
  padding: 100px 10%;
  display: flex;
  justify-content: center;
}

.contact-card {
  background: var(--navy-primary);
  color: var(--white);
  padding: 80px 40px;
  border-radius: 40px;
  text-align: center;
  width: 100%;
  max-width: 800px;
}

.contact-card h2 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.contact-card p {
  margin-bottom: 40px;
  opacity: 0.8;
}

/* ===================== FOOTER ===================== */
footer {
  padding: 40px 10%;
  text-align: center;
  border-top: 1px solid #eee;
  font-size: 0.9rem;
  color: var(--text-slate);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
  nav { padding: 0 5%; }
  #nav-tabs { display: none; } /* Could be replaced with burger menu */
  .hero-heading { font-size: 2.5rem; }
  .grid-container { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; width: 100%; }
  .btn { width: 100%; text-align: center; }
}