* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: #f4f7fb;
  color: #1e2b3c;
  line-height: 1.5;
}

:root {
  --biru-tua: #0a2c4b;
  --biru-muda: #4b7b9d;
  --abu: #6c757d;
  --abu-terang: #e9edf2;
  --putih: #ffffff;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navbar */
.navbar {
  background-color: var(--biru-tua);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(10,44,75,0.1);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo i {
  font-size: 2rem;
  color: var(--biru-muda);
}

.logo span {
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--putih);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--abu-terang);
  text-decoration: none;
  font-weight: 500;
  transition: 0.2s;
  font-size: 1.1rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
  border-bottom: 2px solid var(--biru-muda);
  padding-bottom: 0.2rem;
}

.btn-daftar {
  background-color: var(--biru-muda);
  color: white;
  border: none;
  padding: 0.6rem 1.8rem;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.2s;
}

.btn-daftar:hover {
  background-color: #3a6280;
  transform: scale(1.02);
}

/* Hero Section */
.hero {
  background: linear-gradient(145deg, var(--biru-tua) 0%, #123b5e 100%);
  color: white;
  padding: 4rem 0;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.hero-text {
  flex: 1 1 45%;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-text h1 span {
  color: #9fc5e2;
  border-bottom: 4px solid var(--biru-muda);
  display: inline-block;
  padding-bottom: 0.2rem;
}

.hero-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #cfdfed;
  max-width: 550px;
}

.hero-buttons {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.btn-primary {
  background-color: var(--biru-muda);
  color: white;
  border: none;
  padding: 0.9rem 2.5rem;
  border-radius: 40px;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 8px 18px rgba(0,40,70,0.4);
  transition: 0.2s;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: #3f7091;
  transform: translateY(-3px);
}

.btn-outline-light {
  background: transparent;
  border: 2px solid var(--biru-muda);
  color: white;
  padding: 0.9rem 2.2rem;
  border-radius: 40px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: 0.2s;
  cursor: pointer;
}

.btn-outline-light:hover {
  background-color: rgba(75, 123, 157, 0.15);
  border-color: #8bb9d4;
}

.hero-image {
  flex: 1 1 45%;
  height: 400px;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 25px 40px -10px rgba(0,0,0,0.4);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.hero-image img:hover {
  transform: scale(1.05);
}

/* Stats Section */
.stats {
  background-color: white;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--abu-terang);
}

.stats-grid {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--biru-tua);
}

.stat-item p {
  color: var(--abu);
  font-weight: 500;
}

/* Explanation Section */
.explanation {
  padding: 5rem 0;
  background-color: white;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--biru-tua);
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--abu);
  max-width: 700px;
  margin: 0 auto 4rem auto;
  font-size: 1.2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.feature-card {
  background: #f8fafd;
  padding: 2rem 1.5rem;
  border-radius: 24px;
  box-shadow: 0 10px 25px -8px rgba(10,44,75,0.1);
  transition: all 0.2s;
  border: 1px solid #dee7ef;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--biru-muda);
}

.feature-icon {
  background-color: var(--biru-tua);
  width: 70px;
  height: 70px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-icon i {
  font-size: 2.5rem;
  color: white;
}

.feature-card h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--biru-tua);
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--abu);
  margin-bottom: 1.5rem;
}

.feature-link {
  color: var(--biru-muda);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-link i {
  transition: transform 0.2s;
}

.feature-link:hover i {
  transform: translateX(5px);
}

/* Office Gallery - DENGAN GAMBAR */
.office-gallery {
  background-color: var(--abu-terang);
  padding: 4rem 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
  margin-top: 2.5rem;
}

.gallery-item {
  background: white;
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 12px 25px -10px rgba(0,0,0,0.2);
  transition: 0.2s;
  border: 1px solid #cddae6;
}

.gallery-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 30px -5px var(--biru-muda);
}

.gallery-img {
  height: 220px;
  overflow: hidden;
}

.gallery-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-img img {
  transform: scale(1.1);
}

.gallery-caption {
  padding: 1.5rem 1rem 1.8rem;
  text-align: center;
}

.gallery-caption h4 {
  font-size: 1.3rem;
  color: var(--biru-tua);
  margin-bottom: 0.3rem;
}

.gallery-caption p {
  color: var(--abu);
}

/* Training Section */
.training {
  padding: 5rem 0;
  background: white;
}

.training-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.training-item {
  background: #f3f7fc;
  padding: 2rem 1.5rem;
  border-radius: 28px;
  text-align: center;
  border-bottom: 5px solid var(--biru-muda);
}

.training-item .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--biru-tua);
  margin: 0.5rem 0;
}

.training-item ul {
  list-style: none;
  margin: 1.5rem 0;
  color: var(--abu);
}

.training-item li {
  padding: 0.4rem 0;
  border-bottom: 1px dashed #cddae6;
}

.training-item li i {
  color: var(--biru-muda);
  margin-right: 0.6rem;
}

.btn-training {
  background-color: var(--biru-tua);
  color: white;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 40px;
  font-weight: 600;
  margin-top: 1rem;
  cursor: pointer;
  transition: 0.2s;
}

.btn-training:hover {
  background-color: var(--biru-muda);
}

/* Testimonial Section - DENGAN FOTO */
.testimonial {
  background-color: var(--biru-tua);
  color: white;
  padding: 4rem 0;
}

.testimonial .container {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  align-items: center;
}

.testi-image {
  flex: 1 1 200px;
  height: 250px;
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.testi-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testi-content {
  flex: 3 1 400px;
}

.testi-content i {
  color: var(--biru-muda);
  font-size: 2.5rem;
  opacity: 0.7;
  margin-bottom: 0.5rem;
}

.testi-content p {
  font-size: 1.3rem;
  font-style: italic;
  margin-bottom: 1.5rem;
}

.testi-author {
  font-weight: 700;
  color: #9fc5e2;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(130deg, var(--biru-muda), #204b6b);
  padding: 4rem 0;
  text-align: center;
  color: white;
}

.cta-section h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.cta-section .btn-primary {
  background-color: white;
  color: var(--biru-tua);
  margin-top: 1.8rem;
  box-shadow: none;
}

.cta-section .btn-primary:hover {
  background-color: #eef4fa;
}

/* Footer */
.footer {
  background-color: #13293d;
  color: #adb5bd;
  padding: 2.5rem 0;
  border-top: 1px solid #1e3f5a;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
}

.footer-col p {
  margin: 1rem 0;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 700;
  color: white;
}

.footer-logo i {
  color: var(--biru-muda);
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-icons a {
  background-color: #1d3f5c;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: 0.2s;
}

.social-icons a:hover {
  background-color: var(--biru-muda);
}

.copyright {
  text-align: center;
  padding-top: 2.5rem;
  color: #7f95ab;
}

/* Popup Message */
.popup-message {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--biru-tua);
  color: white;
  padding: 1rem 2rem;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  transform: translateY(150%);
  transition: transform 0.4s ease;
  z-index: 999;
  font-weight: 500;
  border-left: 6px solid var(--biru-muda);
}

.popup-message.show {
  transform: translateY(0);
}

/* Smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Responsive Design */
@media (max-width: 800px) {
  .nav-links {
    display: none;
  }
  
  .hero .container {
    flex-direction: column;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-image {
    height: 300px;
    width: 100%;
  }
}