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

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a26;
  --surface: #16161f;
  --border: #1e1e2e;
  --text: #e4e4e7;
  --text-muted: #8b8b9e;
  --text-dim: #5a5a6e;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --accent-bright: #818cf8;
  --green: #34d399;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s, padding 0.3s;
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--accent-bright);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s;
}

.nav-links a:hover::after {
  width: 100%;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 70% 10%, rgba(129, 140, 248, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  text-align: center;
}

.hero-greeting {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent-bright);
  margin-bottom: 12px;
  font-weight: 400;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s;
  font-family: var(--font);
}

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

.btn-primary:hover {
  background: var(--accent-bright);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-1px);
}

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

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

.hero-links {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.hero-links a {
  color: var(--text-dim);
  transition: color 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
}

.hero-links a:hover {
  color: var(--accent-bright);
  transform: translateY(-2px);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator span {
  display: block;
  width: 20px;
  height: 32px;
  border: 2px solid var(--text-dim);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--text-dim);
  border-radius: 2px;
  animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.3; transform: translateX(-50%) translateY(6px); }
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 48px;
  max-width: 560px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  margin-top: 40px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 0.975rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
}

.detail-card:last-child {
  margin-bottom: 0;
}

.detail-card h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-bright);
  margin-bottom: 16px;
  font-weight: 600;
}

.detail-card ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.detail-card ul li:last-child {
  border-bottom: none;
}

.detail-card ul li strong {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text);
}

.detail-card ul li span {
  font-size: 0.825rem;
  color: var(--text-muted);
}

.drives-list li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 6px 0 !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 10px !important;
}

.drives-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ===== Experience Timeline ===== */
.experience {
  background: var(--surface);
}

.timeline {
  margin-top: 48px;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  z-index: 1;
}

.timeline-item:first-child .timeline-marker {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.3s, transform 0.3s;
}

.timeline-content:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateX(4px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 4px;
}

.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.timeline-date {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.timeline-company {
  font-size: 0.875rem;
  color: var(--accent-bright);
  margin-bottom: 12px;
  font-weight: 500;
}

.timeline-content ul {
  padding-left: 0;
}

.timeline-content ul li {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.timeline-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-dim);
}

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before {
  opacity: 1;
}

.project-icon {
  color: var(--accent-bright);
  margin-bottom: 16px;
}

.project-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.project-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.project-tags span {
  font-family: var(--mono);
  font-size: 0.725rem;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--accent-glow);
  color: var(--accent-bright);
  font-weight: 500;
}

.project-status {
  font-size: 0.775rem;
  color: var(--green);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.project-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
}

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

.contact .section-title {
  display: block;
}

.contact .section-title::after {
  margin: 12px auto 0;
}

.contact-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 24px auto 40px;
}

.contact-links {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all 0.2s;
}

.contact-link:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.contact-link svg {
  flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ===== Animations ===== */
.fade-up {
  animation: fadeUp 0.6s ease-out forwards;
  opacity: 0;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 100px 24px 60px;
    min-height: 90vh;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline-header {
    flex-direction: column;
    gap: 4px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: 2rem;
  }

  .hero-sub {
    font-size: 0.9rem;
  }

  .timeline-content {
    padding: 18px;
  }

  .project-card {
    padding: 22px;
  }
}

/* Selection color */
::selection {
  background: var(--accent);
  color: #fff;
}