:root {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --dark: #020617;
  --dark-soft: #0f172a;
  --card: #111827;
  --card-light: #1f2937;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --muted-dark: #94a3b8;
  --border: rgba(148, 163, 184, 0.22);
}

body {
  padding-top: 76px;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--dark);
  line-height: 1.7;
}

section {
  scroll-margin-top: 90px;
}

/* Navigation */
.navbar {
  background: rgba(2, 6, 23, 0.92) !important;
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border) !important;
}

.navbar-brand {
  color: var(--text) !important;
  letter-spacing: -0.02em;
}

.nav-link {
  color: var(--muted) !important;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--primary) !important;
}

/* Hero */
.hero-section {
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.22), transparent 32%),
    radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.14), transparent 35%),
    linear-gradient(135deg, #020617 0%, #0f172a 100%);
}

.eyebrow,
.section-label {
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-section .lead {
  max-width: 760px;
  color: var(--muted);
}

.hero-summary {
  max-width: 720px;
  color: var(--muted-dark);
}

/* Profile photo */
.profile-card {
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 22px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

.profile-photo {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: 22px;
}

.profile-note {
  padding: 18px 4px 0;
}

.profile-note h2 {
  color: var(--text);
}

.profile-note p {
  color: var(--muted-dark);
}

/* Impact section */
.impact-section {
  background: #020617;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.impact-card {
  padding: 24px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  height: 100%;
}

.impact-card h2 {
  color: var(--text);
}

.impact-card p {
  color: var(--muted-dark);
  font-size: 0.95rem;
}

/* General text */
.text-muted {
  color: var(--muted-dark) !important;
}

.project-section {
  background: #0f172a;
}

/* Cards */
.card,
.skill-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--card);
  color: var(--text);
}

.project-card {
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  border-color: rgba(96, 165, 250, 0.45);
}

.featured-project {
  border-color: rgba(96, 165, 250, 0.5);
}

.project-card .card-body {
  padding: 28px;
}

.project-problem {
  color: var(--muted);
  font-weight: 500;
}

.project-list {
  padding-left: 1.1rem;
  color: var(--muted-dark);
}

.tools {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 700;
}

.skill-card {
  padding: 24px;
}

/* Buttons */
.btn {
  border-radius: 999px;
  font-weight: 600;
}

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

.btn-primary:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #020617;
}

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

.btn-outline-primary:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #020617;
}

.btn-outline-secondary {
  color: var(--muted);
  border-color: var(--muted-dark);
}

.btn-outline-secondary:hover {
  background: var(--muted);
  color: #020617;
  border-color: var(--muted);
}

.btn-outline-light:hover {
  color: #020617;
}

/* Badges */
.badge {
  font-weight: 700;
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
}

/* Contact */
.contact-section {
  background:
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.25), transparent 30%),
    #020617;
  color: #ffffff;
  border-top: 1px solid var(--border);
}

/* Footer */
footer {
  background: #020617;
  border-top: 1px solid var(--border) !important;
}

footer p {
  color: var(--muted-dark);
}

/* Mobile */
@media (max-width: 991px) {
  .hero-section {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .profile-photo {
    height: 320px;
  }
}