:root {
  --bg: #020617;
  --bg-alt: #030712;
  --card: #0b1120;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2937;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.7);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #020617 0, #000 65%);
  color: var(--text);
}

body {
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, 100% - 2rem);
  margin: 0 auto;
}

/* HEADER */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(2, 6, 23, 0.96), transparent);
  border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.avatar-circle {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #38bdf8, #4f46e5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.5);
}

.name {
  margin: 0;
  font-size: 1.1rem;
}

.tagline {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.nav-links {
  display: flex;
  gap: 0.85rem;
  font-size: 0.88rem;
}

.nav-links a {
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  color: var(--muted);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(15, 23, 42, 0.9);
}

/* HERO */

.hero {
  padding: 4rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: flex-start;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(1.9rem, 3.1vw, 2.4rem);
  margin: 0 0 1rem;
}

.hero-subtitle {
  margin: 0 0 1.6rem;
  color: var(--muted);
  max-width: 40rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.btn.primary {
  background: linear-gradient(135deg, #38bdf8, #4f46e5);
  color: white;
  box-shadow: 0 18px 40px rgba(56, 189, 248, 0.4);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 48px rgba(56, 189, 248, 0.5);
}

.btn.secondary {
  border-color: rgba(148, 163, 184, 0.6);
  color: var(--text);
  background: rgba(15, 23, 42, 0.9);
}

.btn.secondary:hover {
  border-color: var(--accent);
}

.hero-card {
  background: radial-gradient(circle at top left, #1f2937, #020617);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1.6rem;
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-soft);
}

.hero-card h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
}

.hero-card li + li {
  margin-top: 0.4rem;
}

/* SECTIONS */

.section {
  padding: 3.3rem 0;
}

.section-alt {
  background: radial-gradient(circle at top, #020617, #000 75%);
}

.section h2 {
  margin-top: 0;
  margin-bottom: 1.3rem;
  font-size: 1.35rem;
}

.section p {
  color: var(--muted);
}

/* SKILLS */

.skills-grid {
  display: grid;
  gap: 1.6rem;
}

.skill-group h3 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-chips span {
  font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

/* EXPERIENCE TIMELINE */

.timeline {
  border-left: 2px solid rgba(55, 65, 81, 0.95);
  margin-left: 0.8rem;
  padding-left: 1.6rem;
  display: grid;
  gap: 2rem;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 0.35rem;
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
}

.timeline-meta h3 {
  margin: 0;
  font-size: 1.02rem;
}

.company {
  margin: 0.25rem 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.dates {
  margin: 0.2rem 0 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.timeline-body ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.timeline-body li + li {
  margin-top: 0.3rem;
}

/* PROJECTS */

.card-grid {
  display: grid;
  gap: 1.6rem;
}

.card {
  background: rgba(15, 23, 42, 0.98);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.35rem;
}

.card-meta {
  margin: 0 0 0.8rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.card p {
  margin: 0 0 0.8rem;
}

.card-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-list li + li {
  margin-top: 0.25rem;
}

/* CERTS */

.cert-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cert-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(31, 41, 55, 0.9);
}

.cert-tag,
.cert-tag-pending {
  font-size: 0.75rem;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: var(--muted);
}

.cert-tag-pending {
  border-color: #f59e0b;
  color: #fbbf24;
}

/* CONTACT */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: flex-start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
  font-size: 0.9rem;
}

.contact-list a {
  color: var(--accent);
}

.contact-card {
  background: rgba(15, 23, 42, 0.98);
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.4rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.9rem;
  color: var(--muted);
}

.contact-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.contact-card ul {
  margin: 0;
  padding-left: 1.1rem;
}

.contact-card li + li {
  margin-top: 0.3rem;
}

/* ABOUT SECTION PHOTO + LAYOUT */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 1.1fr);
  gap: 2rem;
  align-items: center;
}

.about-photo-wrap {
  text-align: center;
}

.about-photo {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 999px;
  border: 3px solid rgba(56, 189, 248, 0.9);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.85);
}

.about-caption {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Mobile layout tweak */
@media (max-width: 800px) {
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
    text-align: left;
  }

  .about-photo-wrap {
    order: -1;
  }
}

/* FOOTER */

.site-footer {
  border-top: 1px solid rgba(31, 41, 55, 0.9);
  padding: 1rem 0 1.4rem;
  background: radial-gradient(circle at top, #020617, #020617 60%, #000 100%);
}

.footer-content {
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

/* RESPONSIVE */

@media (max-width: 800px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 540px) {
  .hero {
    padding-top: 3rem;
  }

  .section {
    padding: 2.4rem 0;
  }

  .timeline {
    margin-left: 0.4rem;
    padding-left: 1.3rem;
  }
}