:root {
  --sky-50: #eef7ff;
  --sky-100: #d7ecff;
  --sky-300: #8dc8f5;
  --sky-500: #3a98dc;
  --sky-700: #1767a3;
  --ink-700: #163954;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink-700);
  font-family: "Poppins", "Segoe UI", Tahoma, sans-serif;
  background:
    radial-gradient(circle at 0% 0%, #f8fcff 0%, #eef7ff 38%, #e3f2ff 100%);
}

.navbar {
  background-color: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  color: var(--sky-700) !important;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-logo {
  width: 34px;
  height: 34px;
}

.nav-link {
  color: var(--ink-700);
  font-weight: 600;
}

.hero-section {
  min-height: calc(100vh - 128px);
  display: flex;
  align-items: center;
}

.intro-tag {
  display: inline-block;
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: var(--sky-100);
  color: var(--sky-700);
  font-weight: 600;
}

.btn-primary {
  background-color: var(--sky-500);
  border-color: var(--sky-500);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--sky-700);
  border-color: var(--sky-700);
}

.btn-outline-primary {
  color: var(--sky-700);
  border-color: var(--sky-500);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  background-color: var(--sky-100);
  color: var(--sky-700);
  border-color: var(--sky-700);
}

.profile-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(141, 200, 245, 0.45);
  border-radius: 1.25rem;
  box-shadow: 0 18px 35px rgba(23, 103, 163, 0.14);
  overflow: hidden;
}

.profile-photo {
  width: 100%;
  height: 460px;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

.profile-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem;
}

.hero-logo {
  width: 44px;
  height: 44px;
}

.about-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(141, 200, 245, 0.45);
  border-radius: 1.25rem;
  box-shadow: 0 14px 30px rgba(23, 103, 163, 0.1);
}

.footer {
  margin-top: 1.5rem;
  background: rgba(255, 255, 255, 0.7);
}

@media (max-width: 991.98px) {
  .hero-section {
    min-height: auto;
  }

  .profile-photo {
    height: 420px;
  }
}

@media (max-width: 575.98px) {
  .profile-photo {
    height: 360px;
  }
}