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

:root {
  --bg:        #ffffff;
  --surface:   #f8f9fa;
  --border:    #e5e7eb;
  --text:      #111827;
  --muted:     #6b7280;
  --accent:    #4f46e5;
  --accent-lt: #eef2ff;
  --radius:    10px;
  --max-w:     900px;
  --transition: 0.25s ease;
}

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

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

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ── Layout helpers ───────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 48px;
}

/* ── Fade-in animation ────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Nav ──────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
nav.scrolled { border-color: var(--border); }

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

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

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 12px 24px 20px;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.97);
}
.nav-mobile a {
  padding: 10px 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile.open { display: flex; }

/* ── Hero ─────────────────────────────────────────── */
#hero {
  padding-top: 160px;
  padding-bottom: 96px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}

.hero-text .eyebrow {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 16px;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero-text .tagline {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.65;
  margin-bottom: 32px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #4338ca;
  border-color: #4338ca;
  transform: translateY(-1px);
}

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

.hero-avatar img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 3px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

/* ── Divider ──────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── About ────────────────────────────────────────── */
#about { background: var(--surface); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-bio p {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-bio p:last-child { margin-bottom: 0; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-card .stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-card .stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

/* ── Projects ─────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  background: var(--bg);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-3px);
}

.project-img {
  height: 180px;
  overflow: hidden;
  background: var(--surface);
}
.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
}
.project-card:hover .project-img img { transform: scale(1.04); }

/* ── Project image carousel ───────────────────────── */
.carousel { position: relative; overflow: hidden; }

.carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.35s ease;
}
.carousel-track img {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.45);
  color: #fff;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition), background var(--transition);
  z-index: 2;
}
.carousel:hover .carousel-btn { opacity: 1; }
.carousel-btn:hover { background: rgba(0,0,0,0.7); }
.carousel-btn--prev { left: 8px; }
.carousel-btn--next { right: 8px; }

.carousel-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 2;
}
.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.carousel-dot.active {
  background: #fff;
  transform: scale(1.3);
}

.project-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--accent-lt);
  color: var(--accent);
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: opacity var(--transition);
}
.project-link:hover { opacity: 0.7; }

/* ── Experience ───────────────────────────────────── */
#experience { background: var(--surface); }

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  padding-bottom: 40px;
  position: relative;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  margin-top: 4px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.timeline-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.timeline-role {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.timeline-date {
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
}

.timeline-company {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 12px;
}

.timeline-bullets {
  padding-left: 16px;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-bullets li {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── Documents ────────────────────────────────────── */
.docs-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.doc-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  transition: box-shadow var(--transition), transform var(--transition);
}
.doc-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  transform: translateY(-2px);
}

.doc-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--muted);
}
.doc-icon--accent {
  background: var(--accent-lt);
  border-color: #c7d2fe;
  color: var(--accent);
}

.doc-info {
  flex: 1;
  min-width: 0;
}
.doc-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.doc-subtitle {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

.doc-btn {
  flex-shrink: 0;
  white-space: nowrap;
}

@media (max-width: 500px) {
  .doc-card { flex-wrap: wrap; }
  .doc-btn { width: 100%; justify-content: center; }
}

/* ── Skills ───────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.skill-group-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-item {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.skill-item::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ── Contact ──────────────────────────────────────── */
#contact { background: var(--surface); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-text h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.contact-text p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition);
}
.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateX(3px);
}
.social-link svg { flex-shrink: 0; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.875rem;
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--transition);
  resize: vertical;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea { min-height: 120px; }

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.form-actions .btn { flex: 1; justify-content: center; min-width: 140px; }

.btn-whatsapp {
  background: #25d366;
  color: #fff;
  border-color: #25d366;
}
.btn-whatsapp:hover {
  background: #1ebe5d;
  border-color: #1ebe5d;
  transform: translateY(-1px);
}

.social-link--whatsapp:hover { color: #25d366; border-color: #25d366; }

/* ── Footer ───────────────────────────────────────── */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
}
.footer-back {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity var(--transition);
}
.footer-back:hover { opacity: 0.7; }

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 700px) {
  section { padding: 72px 0; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-avatar {
    order: -1;
    display: flex;
    justify-content: center;
  }
  .hero-avatar img { width: 120px; height: 120px; }
  .hero-ctas { justify-content: center; }
  .hero-text .tagline { margin: 0 auto 32px; }

  .about-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }

  .contact-inner { grid-template-columns: 1fr; gap: 40px; }

  .timeline::before { left: 6px; }
}