/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #0b0b12;
  color: #ffffff;
  line-height: 1.6;
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(10, 10, 20, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 60px;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: #a855f7;
}

.navbar nav a {
  margin-left: 22px;
  color: #d1d5db;
  text-decoration: none;
  font-size: 15px;
  transition: 0.3s ease;
}

.navbar nav a:hover,
.navbar nav a.active {
  color: #a855f7;
}

/* SECTIONS */
.section {
  padding: 120px 70px;
  scroll-margin-top: 90px;
}

.section h2 {
  font-size: 36px;
  margin-bottom: 18px;
}

.section-intro {
  color: #b8b8c7;
  max-width: 850px;
  margin-bottom: 42px;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 60px;
  background:
    radial-gradient(circle at top left, rgba(168, 85, 247, 0.25), transparent 35%),
    radial-gradient(circle at bottom right, rgba(147, 51, 234, 0.15), transparent 35%);
}

.hero-content {
  max-width: 650px;
}

.tag {
  color: #c084fc;
  font-weight: 600;
  margin-bottom: 15px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero p {
  color: #c4c4cf;
  margin-bottom: 28px;
  font-size: 17px;
}

.btn {
  display: inline-block;
  background: linear-gradient(45deg, #7e22ce, #a855f7);
  padding: 12px 24px;
  border-radius: 30px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(168, 85, 247, 0.25);
  transition: 0.3s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

/* COMMON CARDS */
.hero-card,
.card,
.timeline-item,
.team-card,
.supervisor-card,
.contact-info {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 18px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.hero-card {
  width: 340px;
  padding: 34px;
}

.hero-card h3,
.card h3,
.timeline-item h3,
.team-card h3,
.supervisor-card h3 {
  color: #ffffff;
  margin-bottom: 10px;
}

.hero-card p,
.card p,
.timeline-item p,
.team-card p,
.supervisor-card p {
  color: #b8b8c7;
}

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

.card {
  padding: 24px;
  transition: 0.3s ease;
}

.card:hover,
.team-card:hover,
.supervisor-card:hover,
.download-card:hover {
  transform: translateY(-5px);
}

/* MILESTONES */
.dropdown {
  background: #151522;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 12px 18px;
  border-radius: 12px;
  margin-bottom: 30px;
  outline: none;
}

.timeline {
  display: grid;
  gap: 20px;
}

.timeline-item {
  padding: 24px;
}

/* DOWNLOAD */
.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.download-card {
  padding: 24px 18px;
  text-align: center;
  border-radius: 18px;
  background: linear-gradient(45deg, #5b21b6, #9333ea);
  text-decoration: none;
  color: #ffffff;
  font-weight: 600;
  transition: 0.3s ease;
  box-shadow: 0 12px 25px rgba(147, 51, 234, 0.22);
}

/* ABOUT */
.sub-heading {
  margin: 38px 0 22px;
  color: #c084fc;
  font-size: 24px;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.team-card,
.supervisor-card {
  padding: 26px 20px;
  text-align: center;
  transition: 0.3s ease;
}

.team-card img,
.supervisor-card img {
  width: 105px;
  height: 105px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 18px;
  border: 3px solid rgba(168, 85, 247, 0.6);
}

.team-card span,
.supervisor-card span {
  display: block;
  margin-top: 12px;
  color: #c084fc;
  font-size: 14px;
  font-weight: 600;
}

.supervisor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.supervisor-card {
  padding: 30px;
}

.expertise {
  margin-top: 14px;
  font-size: 14px;
  color: #b8b8c7;
}

/* CONTACT */
.contact-info {
  max-width: 650px;
  padding: 28px;
}

.contact-info p {
  color: #c4c4cf;
  margin-bottom: 12px;
}

.contact-info strong {
  color: #ffffff;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 25px;
  color: #9ca3af;
  background: #08080e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* RESPONSIVE */
@media (max-width: 1000px) {
  .navbar {
    padding: 16px 30px;
  }

  .navbar nav a {
    margin-left: 12px;
    font-size: 14px;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 140px;
  }

  .hero-card {
    width: 100%;
    max-width: 420px;
  }

  .grid,
  .download-grid,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 700px) {
  .navbar {
    flex-direction: column;
    gap: 12px;
    padding: 14px 20px;
  }

  .navbar nav {
    text-align: center;
  }

  .navbar nav a {
    display: inline-block;
    margin: 6px 8px;
  }

  .section {
    padding: 100px 25px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero p {
    font-size: 15px;
  }

  .grid,
  .download-grid,
  .team-grid,
  .supervisor-grid {
    grid-template-columns: 1fr;
  }
}