/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0f1117;
  --bg-alt:   #161b27;
  --surface:  #1e2535;
  --border:   #2a3145;
  --accent:   #4f8ef7;
  --accent2:  #7c5cfc;
  --text:     #e2e8f0;
  --muted:    #8892a4;
  --radius:   12px;
  --font:     'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
}

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

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  gap: 1.75rem;
}

.nav__links a {
  font-size: 0.875rem;
  color: var(--muted);
  transition: color 0.2s;
}

.nav__links a:hover { color: var(--text); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  position: relative;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(79,142,247,0.15) 0%, transparent 70%),
    var(--bg);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.3);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero__name {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__title {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--muted);
  margin-top: 0.75rem;
  font-weight: 400;
}

.hero__location {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.6rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 2rem;
  font-size: 1.4rem;
  color: var(--muted);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.6rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border: none;
}

.btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79,142,247,0.3);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ===== SECTIONS ===== */
.section { padding: 6rem 1.5rem; }
.section--alt { background: var(--bg-alt); }

.container {
  max-width: 900px;
  margin: 0 auto;
}

.section__title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.section__title::after {
  content: '';
  position: absolute;
  left: 0; bottom: -8px;
  width: 40px; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 2px;
}

/* ===== ABOUT ===== */
.about__text {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 680px;
  line-height: 1.8;
}

.about__text strong { color: var(--text); }

/* ===== TIMELINE ===== */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 12px; bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent2));
  opacity: 0.3;
}

.timeline__item {
  display: flex;
  gap: 1.75rem;
  padding-bottom: 2.5rem;
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  flex-shrink: 0;
  margin-top: 2px;
  box-shadow: 0 0 0 4px rgba(79,142,247,0.15);
}

.timeline__content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  flex: 1;
  transition: border-color 0.2s;
}

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

.timeline__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.timeline__company {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}

.timeline__badge {
  font-size: 0.7rem;
  font-weight: 600;
  background: rgba(79,142,247,0.15);
  color: var(--accent);
  border: 1px solid rgba(79,142,247,0.3);
  padding: 0.1rem 0.6rem;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline__role {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.timeline__period {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

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

.timeline__tags span {
  font-size: 0.78rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.2rem 0.65rem;
  border-radius: 6px;
}

/* ===== EDUCATION ===== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: border-color 0.2s;
}

.edu-card:hover { border-color: var(--accent); }

.edu-card__icon { font-size: 2rem; }

.edu-card__school {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.edu-card__degree {
  font-size: 0.87rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.edu-card__period {
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.7;
}

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.skill-group h3 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tags span {
  font-size: 0.82rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 8px;
  color: var(--text);
  transition: border-color 0.2s, color 0.2s;
}

.skill-tags span:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== CERTIFICATIONS ===== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: border-color 0.2s, transform 0.2s;
}

.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.cert-card__issuer {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent2);
}

.cert-card__name {
  font-size: 1.05rem;
  font-weight: 600;
}

.cert-card__date {
  font-size: 0.82rem;
  color: var(--muted);
}

.cert-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.cert-card__tags span {
  font-size: 0.75rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  color: var(--muted);
}

.cert-card__link {
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: auto;
  padding-top: 0.5rem;
}

/* ===== CONTACT ===== */
.contact { text-align: center; }

.contact__sub {
  color: var(--muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.contact__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.82rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .nav__links { display: none; }
  .timeline::before { display: none; }
  .timeline__item { flex-direction: column; gap: 0.75rem; }
}