:root {
  --page-bg: #f0f4ff;
  --surface: #ffffff;
  --surface-strong: #eef2ff;
  --text: #162038;
  --muted: #556078;
  --accent: #4057ff;
  --accent-soft: #d9e0ff;
  --border: rgba(66, 82, 166, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(64, 87, 255, 0.12), transparent 35%),
    linear-gradient(180deg, #f7faff 0%, #eef4ff 100%);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

a {
  color: var(--accent);
}
a:hover {
  color: #2d41d1;
  text-decoration: none;
}

.navbar {
  background: rgba(16, 27, 72, 0.92) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.navbar-brand {
  font-weight: 700;
  letter-spacing: 0.04em;
}
.navbar .nav-link {
  color: rgba(255, 255, 255, 0.88) !important;
}
.navbar .nav-link.active,
.navbar .nav-link:hover {
  color: #ffffff !important;
}
.hero {
  background: linear-gradient(135deg, #1b2b5c 0%, #3b5caf 48%, #7f9cff 100%);
  color: #fff;
  padding: 5rem 0 4rem;
  margin-bottom: 2rem;
  border-radius: 0 0 32px 32px;
}
.hero h1 {
  font-weight: 800;
  line-height: 1.05;
  text-shadow: 0 24px 50px rgba(0, 0, 0, 0.18);
}
.hero p {
  font-size: 1.05rem;
  max-width: 42rem;
  margin: 0 auto;
  opacity: 0.92;
}

.section-title {
  font-weight: 700;
  margin-bottom: 1rem;
}
.section-title::after {
  content: '';
  display: block;
  width: 4rem;
  height: 4px;
  margin-top: 0.75rem;
  background: var(--accent);
  border-radius: 999px;
}

.card,
.profile-card,
.highlight-card {
  border: none;
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.08);
  background: var(--surface);
}
.profile-card {
  padding: 2rem;
}
.profile-card img {
  width: 100%;
  border-radius: 24px;
}
.btn-primary {
  background: linear-gradient(135deg, #4057ff 0%, #2f45d8 100%);
  border: none;
  box-shadow: 0 18px 30px rgba(64, 87, 255, 0.18);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2f45d8 0%, #1f30b0 100%);
}
.highlight-card {
  padding: 1.8rem;
  background: var(--surface-strong);
  border: 1px solid rgba(64, 87, 255, 0.12);
}
.profile-info p {
  margin-bottom: 0.65rem;
  color: var(--muted);
}
.profile-info a {
  color: var(--accent);
}
.profile-info a:hover {
  color: #2d41d1;
}
.card-title {
  font-weight: 700;
}
.card-text {
  color: var(--muted);
}
.card[href] {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
}
footer {
  background: #172034;
  color: rgba(255, 255, 255, 0.72);
}
footer a {
  color: #9ab7ff;
}
footer a:hover {
  color: #ffffff;
}

@media (max-width: 767px) {
  .hero {
    padding-top: 3rem;
  }
}