/* style.css */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
}

body {
  background-color: #f5f9fe;
  color: #0b1a2e;
  line-height: 1.5;
}

/* electric blue palette */
:root {
  --electric-blue: #0066ff;
  --electric-dark: #0047b3;
  --electric-glow: #3b8cff;
  --electric-light: #e6f0ff;
  --electric-soft: #cce0ff;
  --grey-bg: #f0f4fc;
}

/* ----- sticky header - dark like footer ----- */
.sticky-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #0b1a2e;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border-bottom: 3px solid var(--electric-blue);
  padding: 0.6rem 0;
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.logo h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.logo span {
  color: var(--electric-blue);
}

.logo small {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  color: #a8c0e0;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  font-weight: 600;
  color: #c3d6f0;
  transition: color 0.2s;
  font-size: 1rem;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
  border-bottom-color: var(--electric-blue);
}

.hamburger {
  display: none;
  font-size: 1.8rem;
  color: #ffffff;
  cursor: pointer;
}

.hamburger:hover {
  color: var(--electric-blue);
}

/* ----- hero slider with clear images & titles ----- */
.hero-slider {
  position: relative;
  max-width: 1300px;
  margin: 2rem auto 1rem;
  padding: 0 2rem;
}

.slider-container {
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 80, 200, 0.25);
  background: #1a1a2e;
  position: relative;
}

.slider-wrapper {
  display: flex;
  transition: transform 0.5s ease-in-out;
  width: 100%;
}

.slide {
  min-width: 100%;
  flex: 0 0 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 400px;
  max-height: 550px;
}

.slide-content {
  position: absolute;
  bottom: 60px;
  left: 60px;
  max-width: 60%;
  z-index: 10;
  padding: 0;
}

.slide-content h2 {
  font-size: 3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
  line-height: 1.2;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6), 0 2px 8px rgba(0, 0, 0, 0.4);
}

.slide-content p {
  font-size: 1.25rem;
  color: #ffffff;
  font-weight: 300;
  margin: 0;
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.7), 0 1px 6px rgba(0, 0, 0, 0.5);
  opacity: 0.95;
}

.slide-content .highlight {
  color: var(--electric-blue);
  font-weight: 600;
}

.slider-controls {
  display: flex;
  justify-content: center;
  gap: 1.2rem;
  margin-top: 1.5rem;
  position: relative;
  z-index: 2;
}

.slider-controls button {
  background: var(--electric-light);
  border: none;
  color: var(--electric-dark);
  width: 48px;
  height: 48px;
  border-radius: 60px;
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  transition: 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.slider-controls button:hover {
  background: var(--electric-blue);
  color: white;
  transform: scale(1.05);
}

/* slider dots */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.slider-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #c4d4e8;
  cursor: pointer;
  transition: 0.25s;
  border: 2px solid transparent;
}

.slider-dots .dot.active {
  background: var(--electric-blue);
  border-color: var(--electric-blue);
  transform: scale(1.2);
}

.slider-dots .dot:hover {
  background: var(--electric-blue);
}

/* ----- sections general ----- */
.section {
  max-width: 1300px;
  margin: 3.5rem auto;
  padding: 0 2rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: #0b1f38;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section-title i {
  color: var(--electric-blue);
  font-size: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  background: white;
  border-radius: 24px;
  padding: 2rem 1.8rem;
  box-shadow: 0 8px 28px rgba(0, 60, 150, 0.08);
  border-left: 6px solid var(--electric-blue);
  transition: 0.25s;
  position: relative;
  overflow: hidden;
  min-height: 220px;
  background-blend-mode: overlay;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 80, 200, 0.15);
}

.card i {
  color: var(--electric-blue);
  font-size: 2.2rem;
  margin-bottom: 0.8rem;
  background: rgba(255,255,255,0.8);
  padding: 6px 10px;
  border-radius: 12px;
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
  color: #0b1f38;
}

.card p {
  color: #1f334f;
}

/* about + contact two columns */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  background: white;
  border-radius: 32px;
  padding: 2.5rem;
  box-shadow: 0 8px 30px rgba(0, 60, 150, 0.06);
}

.col h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #0b1f38;
}

.col h3 i {
  color: var(--electric-blue);
  margin-right: 12px;
}

.col p {
  margin-bottom: 1rem;
  color: #1f334f;
}

.contact-info {
  list-style: none;
  margin-top: 1.5rem;
}

.contact-info li {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.contact-info li i {
  width: 28px;
  color: var(--electric-blue);
  font-size: 1.3rem;
}

.btn-outline {
  display: inline-block;
  background: transparent;
  border: 2px solid var(--electric-blue);
  color: var(--electric-dark);
  padding: 0.6rem 2rem;
  border-radius: 60px;
  font-weight: 700;
  text-decoration: none;
  margin-top: 0.8rem;
  transition: 0.15s;
}

.btn-outline:hover {
  background: var(--electric-blue);
  color: white;
}

.footer {
  background: #0b1a2e;
  color: #c3d6f0;
  padding: 2.5rem 2rem;
  margin-top: 2rem;
  text-align: center;
  border-top: 4px solid var(--electric-blue);
}

.footer span {
  color: white;
  font-weight: 600;
}

/* responsive */
@media (max-width: 1024px) {
  .slide-content {
    bottom: 40px;
    left: 40px;
    max-width: 70%;
  }
  .slide-content h2 {
    font-size: 2.5rem;
  }
  .slide-content p {
    font-size: 1.1rem;
  }
}

@media (max-width: 820px) {
  .header-container {
    flex-wrap: wrap;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 1rem 0 0.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 0.5rem;
  }

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

  .hamburger {
    display: block;
  }

  .two-col {
    grid-template-columns: 1fr;
    padding: 1.8rem;
  }

  .slide img {
    min-height: 280px;
    max-height: 350px;
  }
  
  .slide-content {
    bottom: 30px;
    left: 30px;
    max-width: 80%;
  }
  .slide-content h2 {
    font-size: 2rem;
  }
  .slide-content p {
    font-size: 1rem;
  }
}

@media (max-width: 500px) {
  .logo h1 {
    font-size: 1.3rem;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .slide img {
    min-height: 220px;
    max-height: 280px;
  }
  .slide-content {
    bottom: 20px;
    left: 20px;
    max-width: 90%;
  }
  .slide-content h2 {
    font-size: 1.5rem;
  }
  .slide-content p {
    font-size: 0.85rem;
  }
}