:root {
  --bg: #fafaf9;
  --bg-alt: #f3f2ef;
  --dark: #141210;
  --text: #2a2724;
  --muted: #6b6560;
  --accent: #2d5be3;
  --accent-hover: #1e46c7;
  --accent-light: #eef2fd;
  --orange: #e87c2d;
  --border: #e2dfd9;
  --card-bg: #ffffff;
  --nav-height: 68px;
  --font-sans: 'DM Sans', sans-serif;
  --font-serif: 'DM Serif Display', serif;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.1);
  --radius: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

/* TYPOGRAPHY */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 500; }
em { font-family: var(--font-serif); font-style: italic; color: var(--accent); }
p { color: var(--muted); }
a { text-decoration: none; color: inherit; }

/* NAV */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(250, 250, 249, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--dark);
  font-style: italic;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--dark); }

.nav-cta {
  background: var(--accent) !important;
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
}

.nav-cta:hover { background: var(--accent-hover) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 100px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(45,91,227,0.3);
}

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

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

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-height) + 3rem) 2rem 4rem;
  background: linear-gradient(160deg, #f0f4ff 0%, var(--bg) 50%);
  position: relative;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-eyebrow {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 5.5rem);
  color: var(--dark);
  line-height: 1;
  margin-bottom: 1.25rem;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* HERO VISUAL */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
}

.avatar-ring {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7ba4f4);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.avatar-initials {
  font-family: var(--font-serif);
  font-size: 4rem;
  color: white;
  font-style: italic;
}

.floating-tag {
  position: absolute;
  background: white;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  animation: floatTag 5s ease-in-out infinite;
}

.tag-1 { top: 40px; right: 20px; color: var(--accent); animation-delay: 0s; }
.tag-2 { bottom: 80px; right: 0; color: var(--orange); animation-delay: 1.5s; }
.tag-3 { bottom: 40px; left: 20px; color: var(--muted); animation-delay: 3s; }

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

/* SCROLL HINT */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--border), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* SECTIONS */
.section { padding: 6rem 2rem; }

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--dark);
  margin-bottom: 2.5rem;
}

/* ABOUT */
.about { background: var(--bg-alt); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  margin-bottom: 1rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat strong {
  display: block;
  font-size: 2rem;
  font-family: var(--font-serif);
  color: var(--dark);
  font-style: italic;
  line-height: 1;
}

.stat span {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.highlight-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.highlight-card:hover {
  transform: translateX(4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.hc-icon { font-size: 1.75rem; margin-bottom: 0.75rem; }

.highlight-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.4rem;
}

.highlight-card p {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* EXPERIENCE */
.experience { background: var(--bg); }

.timeline { position: relative; padding-left: 2rem; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.timeline-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.timeline-card:hover { box-shadow: var(--shadow-md); }

.tc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.tc-header h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark);
}

.company {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 0.2rem;
}

.tc-badge {
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  white-space: nowrap;
}

.tc-badge--orange {
  background: #fef3eb;
  color: var(--orange);
}

.tc-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

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

.tc-tags span {
  background: var(--bg-alt);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  border: 1px solid var(--border);
}

/* EDUCATION */
.education { background: var(--bg-alt); }

.edu-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  display: flex;
  gap: 2rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.edu-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.edu-icon { font-size: 3rem; flex-shrink: 0; }

.edu-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.3rem;
}

.edu-school {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.edu-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

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

.edu-tags span {
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
}

/* SKILLS */
.skills { background: var(--bg); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.skill-group {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.skill-group.revealed {
  opacity: 1;
  transform: translateY(0);
}

.skill-group h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.skill-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skill-group li {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.skill-bar {
  display: block;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.skill-bar::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #7ba4f4);
  border-radius: 2px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-bar.animated::after {
  width: var(--w);
}

/* CONTACT */
.contact { background: var(--bg-alt); }

.contact-box {
  background: linear-gradient(135deg, var(--accent) 0%, #5b87f5 100%);
  border-radius: 24px;
  padding: 4rem;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.contact-box.revealed { opacity: 1; transform: translateY(0); }

.contact-box .section-label { color: rgba(255,255,255,0.7); }
.contact-box .section-heading { color: white; }
.contact-box .section-heading em { color: rgba(255,255,255,0.85); }

.contact-sub {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto 2rem;
}

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

.contact-actions .btn-primary {
  background: white;
  color: var(--accent);
}

.contact-actions .btn-primary:hover {
  background: rgba(255,255,255,0.9);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.contact-actions .btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: white;
}

.contact-actions .btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

/* FOOTER */
footer {
  background: var(--dark);
  padding: 2rem;
  text-align: center;
}

footer p {
  color: #666;
  font-size: 0.85rem;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { height: 280px; }
  .avatar-ring { width: 160px; height: 160px; }
  .avatar-initials { font-size: 3rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .edu-card { flex-direction: column; }

  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: white; padding: 1.5rem 2rem; box-shadow: var(--shadow-md); gap: 1.25rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}

@media (max-width: 600px) {
  .section { padding: 4rem 1.25rem; }
  .contact-box { padding: 2.5rem 1.5rem; }
  .about-stats { gap: 1.25rem; }
  .tc-header { flex-direction: column; gap: 0.5rem; }
}