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

:root {
  --teal:        #0D9488;
  --teal-light:  #CCFBF1;
  --teal-mid:    #5EEAD4;
  --teal-dark:   #0F766E;
  --white:       #FFFFFF;
  --off-white:   #F8FAFA;
  --gray-50:     #F9FAFB;
  --gray-100:    #F3F4F6;
  --gray-200:    #E5E7EB;
  --gray-400:    #9CA3AF;
  --gray-600:    #6B7280;
  --gray-800:    #1F2937;
  --black:       #0A0A0A;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --radius:      12px;
  --radius-sm:   8px;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:   0 16px 48px rgba(0,0,0,0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ─── TYPOGRAPHY ─── */
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }
em { font-style: italic; color: var(--teal); }
a { color: inherit; text-decoration: none; }

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--black);
  line-height: 1.15;
}

.section-header {
  margin-bottom: 4rem;
}

/* ─── LAYOUT ─── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 6rem 0;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--teal);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13,148,136,0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--black);
  border: 1.5px solid var(--gray-200);
}
.btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* ─── NAVBAR ─── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

#navbar.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--teal);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--teal-light);
  display: grid;
  place-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--gray-600);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--teal); }

.nav-cta {
  background: var(--teal) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-weight: 500 !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover {
  background: var(--teal-dark) !important;
  transform: translateY(-1px);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── HERO ─── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.18;
}

.blob-1 {
  width: 600px;
  height: 600px;
  background: var(--teal);
  top: -200px;
  right: -100px;
  animation: float-slow 12s ease-in-out infinite alternate;
}

.blob-2 {
  width: 400px;
  height: 400px;
  background: var(--teal-mid);
  bottom: -150px;
  left: -50px;
  animation: float-slow 16s ease-in-out infinite alternate-reverse;
}

@keyframes float-slow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 20px) scale(1.05); }
}

.hero-content {
  max-width: 1160px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: reveal-up 0.8s 0.2s forwards;
}

.hero-name {
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--black);
  margin-bottom: 2rem;
  opacity: 0;
  animation: reveal-up 0.9s 0.4s forwards;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-600);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: reveal-up 0.9s 0.6s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: reveal-up 0.9s 0.8s forwards;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  opacity: 0;
  animation: reveal-up 1s 1.2s forwards;
}

.scroll-line {
  width: 60px;
  height: 1px;
  background: var(--gray-200);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--teal);
  transform: translateX(-100%);
  animation: slide-line 2s 1.5s ease-in-out infinite;
}

@keyframes slide-line {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

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

/* ─── ABOUT ─── */
#about {
  background: var(--off-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 5rem;
  align-items: start;
}

.about-lead {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--gray-800);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.about-body {
  font-size: 0.975rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 2rem;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--gray-600);
  line-height: 1.4;
}

/* ─── EXPERIENCE / TIMELINE ─── */
#experience {
  background: var(--white);
}

.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--teal-light), var(--teal-mid), var(--teal-light));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 1.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--teal);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--teal);
  transform: translateX(-5px);
}

.timeline-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
}
.timeline-card:hover {
  border-color: var(--teal-mid);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

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

.card-tag {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
}
.card-tag--edu {
  background: var(--teal-light);
  color: var(--teal-dark);
}
.card-tag--work {
  background: #FEF3C7;
  color: #92400E;
}

.card-date {
  font-size: 0.8rem;
  color: var(--gray-400);
}

.card-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.25rem;
}

.card-sub {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: 1.25rem;
}

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card-list li {
  font-size: 0.9rem;
  color: var(--gray-800);
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.6;
}
.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

/* ─── SKILLS ─── */
#skills {
  background: var(--off-white);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.skill-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
}

.skill-card:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.skill-icon {
  width: 52px;
  height: 52px;
  background: var(--teal-light);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--teal);
  margin-bottom: 1.25rem;
}

.skill-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.5rem;
}

.skill-card p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.skill-bar {
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--teal-mid), var(--teal));
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-fill.animate {
  width: var(--pct);
}

/* Languages */
.languages {
  padding-top: 3rem;
  border-top: 1px solid var(--gray-200);
}

.lang-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.lang-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 50px;
  font-size: 0.9rem;
  color: var(--gray-800);
  font-weight: 400;
}

/* ─── CERTIFICATIONS ─── */
#certifications {
  background: var(--white);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.cert-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
}

.cert-card:hover {
  border-color: var(--teal-mid);
  box-shadow: var(--shadow-sm);
}

.cert-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 2px;
}

.cert-body h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}

.cert-body p {
  font-size: 0.82rem;
  color: var(--teal);
  font-weight: 500;
}

/* ─── CONTACT ─── */
#contact {
  background: var(--gray-800);
  color: var(--white);
}

#contact .section-label {
  color: var(--teal-mid);
}

#contact .section-title {
  color: var(--white);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: start;
}

.contact-body {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}
.contact-link svg { color: var(--teal-mid); flex-shrink: 0; }
.contact-link:hover { color: var(--white); }

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.04em;
}

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.3); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--teal-mid);
  background: rgba(255,255,255,0.09);
}

.form-note {
  font-size: 0.8rem;
  text-align: center;
  color: var(--teal-mid);
  min-height: 1.2em;
}

/* ─── FOOTER ─── */
footer {
  background: var(--black);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--gray-600);
}

/* ─── MOBILE NAV ─── */
@media (max-width: 768px) {
  .burger { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    z-index: 99;
  }

  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; color: var(--black); }

  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { grid-template-columns: 1fr; gap: 1.5rem; }

  .skills-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 3rem; }

  .hero-scroll-hint { display: none; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 640px) {
  section { padding: 4rem 0; }
  .timeline { padding-left: 1.5rem; }
  .timeline-dot { left: -1.5rem; transform: translateX(-5px); }
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}