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

:root {
  --bg: #f9fafb;
  --surface: #ffffff;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border: #e5e7eb;
  --border-hover: #d1d5db;
  --accent: #0171E3;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-full: 9999px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -4px rgba(0,0,0,0.05);
  --teal: #329696;
  --green: #3E9858;
  --purple: #856ED9;
  --pink: #B95F9D;
  --gold: #C19433;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 80px 24px 60px;
  overflow: hidden;
}

.hero-watermark {
  position: absolute;
  bottom: -2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(8rem, 18vw, 16rem);
  font-weight: 900;
  line-height: 1;
  color: transparent;
  background: linear-gradient(to bottom, rgba(156,163,175,0.1), rgba(156,163,175,0));
  -webkit-background-clip: text;
  background-clip: text;
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
}

.hero-content {
  text-align: center;
  margin-bottom: 48px;
  z-index: 1;
}

.hero-greeting {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.hero-name {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  min-height: 1.2em;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 16px;
  font-weight: 500;
}

.cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

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

/* Quick Nav */
.quick-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  max-width: 640px;
  width: 100%;
  z-index: 1;
}

.quick-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  aspect-ratio: 1;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.2s ease;
  cursor: pointer;
  color: var(--text-secondary);
}

.quick-btn:hover {
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.8);
  transform: scale(0.97);
}

.quick-btn:active {
  transform: scale(0.94);
}

.quick-icon {
  width: 22px;
  height: 22px;
}

.quick-btn:nth-child(1) .quick-icon { color: var(--teal); }
.quick-btn:nth-child(2) .quick-icon { color: var(--green); }
.quick-btn:nth-child(3) .quick-icon { color: var(--purple); }
.quick-btn:nth-child(4) .quick-icon { color: var(--pink); }
.quick-btn:nth-child(5) .quick-icon { color: var(--gold); }

.quick-btn span {
  font-size: 0.82rem;
  font-weight: 500;
}

/* ============================================
   Main Content
   ============================================ */
.main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-inner {
  width: 100%;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 32px;
}

.subsection-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 48px;
  margin-bottom: 20px;
}

/* ============================================
   About
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
}

.about-bio {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.about-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  min-width: 140px;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  text-align: center;
}

/* ============================================
   Experience
   ============================================ */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.exp-card {
  padding: 24px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.2s;
}

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

.exp-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.exp-role {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.exp-company {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.exp-meta {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}

.exp-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.exp-bullets {
  list-style: none;
  padding: 0;
}

.exp-bullets li {
  position: relative;
  padding-left: 16px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.exp-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid;
}

.cert-aws {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.cert-pega {
  background: #faf5ff;
  border-color: #e9d5ff;
}

.cert-year {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.cert-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

/* Education */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.edu-card {
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.edu-flag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: white;
  background: var(--text-muted);
  margin-bottom: 8px;
}

.edu-card:nth-child(1) .edu-flag { background: #2563eb; }
.edu-card:nth-child(2) .edu-flag,
.edu-card:nth-child(3) .edu-flag { background: #059669; }
.edu-card:nth-child(4) .edu-flag { background: #d97706; }

.edu-card h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.edu-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   Projects
   ============================================ */
.project-featured {
  padding: 32px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin-bottom: 20px;
  position: relative;
}

.project-featured-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--teal), var(--green));
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.project-featured h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px;
}

.project-featured > p {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.project-featured .project-tags {
  margin-top: 16px;
}
.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.project-card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: all 0.2s ease;
}

.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.project-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.project-icon svg {
  width: 22px;
  height: 22px;
}

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.project-card > p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tags span {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--bg);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ============================================
   Skills
   ============================================ */
.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.skill-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.skill-group-icon {
  width: 20px;
  height: 20px;
}

.skill-group-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: transform 0.15s ease;
}

.badge:hover {
  transform: scale(1.04);
}

/* ============================================
   Contact
   ============================================ */
.contact-card {
  background: var(--bg);
  border-radius: 24px;
  padding: 40px 48px;
}

.contact-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.contact-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
}

.contact-handle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact-email a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  transition: all 0.2s;
  margin-bottom: 20px;
}

.contact-email a:hover {
  text-decoration: underline;
}

.contact-email svg {
  width: 18px;
  height: 18px;
  transition: transform 0.2s;
}

.contact-email a:hover svg {
  transform: translateX(3px);
}

.contact-socials {
  display: flex;
  gap: 24px;
}

.contact-socials a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.contact-location {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  text-align: center;
  padding: 40px 24px;
}

.footer p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================
   Animations
   ============================================ */
.anim-top {
  animation: slideDown 0.8s ease forwards;
}

.anim-bottom {
  animation: slideUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(50px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .hero {
    padding: 60px 20px 40px;
  }

  .hero-greeting { font-size: 1.1rem; }
  .hero-name { font-size: 2rem; }

  .quick-nav {
    grid-template-columns: repeat(3, 1fr);
    max-width: 320px;
  }

  .quick-nav .quick-btn:nth-child(4),
  .quick-nav .quick-btn:nth-child(5) {
    grid-column: auto;
  }

  .main { padding: 0 20px; }

  .section { padding: 48px 0; }
  .section-title { font-size: 1.6rem; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-stats {
    flex-direction: row;
    justify-content: stretch;
  }

  .stat-card {
    flex: 1;
    min-width: auto;
    padding: 16px 12px;
  }

  .stat-num { font-size: 1.3rem; }

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

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

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

  .contact-card {
    padding: 28px 24px;
    border-radius: 20px;
  }

  .contact-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .quick-nav {
    grid-template-columns: repeat(2, 1fr);
    max-width: 260px;
  }

  .quick-btn {
    aspect-ratio: auto;
    padding: 14px 12px;
    flex-direction: row;
    gap: 8px;
  }

  .about-stats {
    flex-direction: column;
  }

  .stat-card {
    flex-direction: row;
    gap: 10px;
    justify-content: center;
  }
}