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

:root {
  --blue:        #2563EB;
  --blue-dark:   #1D4ED8;
  --blue-mid:    #3B82F6;
  --blue-light:  #DBEAFE;
  --blue-xlight: #EFF6FF;
  --indigo:      #6366F1;
  --slate:       #0F172A;
  --slate-mid:   #475569;
  --slate-light: #94A3B8;
  --bg:          #F0F4FF;       /* soft blue-tinted white */
  --bg-card:     #FFFFFF;
  --bg-alt:      #E8EEFF;       /* slightly deeper blue-lavender */
  --border:      #CBD5E1;
  --border-card: #E2E8F0;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow-sm:   0 1px 4px rgba(37,99,235,.08);
  --shadow-md:   0 4px 20px rgba(37,99,235,.12);
  --shadow-lg:   0 12px 40px rgba(37,99,235,.16);
  --transition:  .25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--slate);
  line-height: 1.6;
  font-size: 16px;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

/* ===========================
   UTILITY
=========================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

.section__label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-light);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section__title {
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--slate);
  letter-spacing: -.025em;
  line-height: 1.15;
}

.section__sub {
  margin-top: 14px;
  color: var(--slate-mid);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  font-size: .975rem;
}

/* ===========================
   BUTTONS
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}

.btn--primary {
  background: linear-gradient(135deg, var(--blue) 0%, var(--indigo) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(37,99,235,.3);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,.4);
}

.btn--outline {
  background: rgba(255,255,255,.7);
  color: var(--blue);
  border-color: var(--blue);
  backdrop-filter: blur(8px);
}
.btn--outline:hover {
  background: var(--blue-xlight);
  transform: translateY(-2px);
}

.btn--lg { padding: 15px 38px; font-size: 1rem; }

/* ===========================
   NAVBAR
=========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  background: rgba(240,244,255,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  border-bottom-color: var(--border-card);
  box-shadow: 0 2px 20px rgba(37,99,235,.1);
}

.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--slate);
  letter-spacing: -.03em;
}
.nav__logo .dot { color: var(--blue); }

.nav__links { display: flex; gap: 34px; }

.nav__links a {
  font-size: .88rem;
  font-weight: 500;
  color: var(--slate-mid);
  transition: color var(--transition);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav__links a:hover { color: var(--blue); }
.nav__links a:hover::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--slate);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border-card);
  background: rgba(240,244,255,.97);
  backdrop-filter: blur(16px);
}
.mobile-menu a {
  padding: 11px 0;
  font-weight: 500;
  color: var(--slate-mid);
  border-bottom: 1px solid var(--border-card);
  transition: color var(--transition);
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--blue); }
.mobile-menu.open { display: flex; }

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 72px;
  padding: 110px 24px 70px;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

/* decorative blobs */
.hero::before,
.hero::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
}
.hero::before {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(99,102,241,.18) 0%, transparent 70%);
  top: -120px; right: -80px;
}
.hero::after {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(37,99,235,.14) 0%, transparent 70%);
  bottom: 0; left: -100px;
}

.hero__content { flex: 1; max-width: 580px; }

.hero__eyebrow {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero__eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px; height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.hero__name {
  font-size: clamp(2.6rem, 5.5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--slate) 30%, var(--blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__role {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  font-weight: 500;
  color: var(--slate-mid);
  margin-bottom: 20px;
}
.hero__role .amp { color: var(--blue); font-weight: 700; }

.hero__tagline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.2);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: .82rem;
  font-weight: 500;
  color: var(--blue);
  margin-bottom: 20px;
}

.hero__bio {
  font-size: .975rem;
  color: var(--slate-mid);
  line-height: 1.75;
  margin-bottom: 34px;
}

.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* hero visual */
.hero__visual {
  position: relative;
  flex-shrink: 0;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar {
  width: 200px; height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, var(--indigo) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 60px rgba(37,99,235,.35);
  position: relative;
  z-index: 1;
}

/* outer ring */
.avatar::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37,99,235,.25), rgba(99,102,241,.25));
  z-index: -1;
}

.avatar__initials {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.02em;
}

.badge {
  position: absolute;
  background: rgba(255,255,255,.95);
  border: 1px solid var(--border-card);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--slate);
  box-shadow: 0 4px 16px rgba(37,99,235,.15);
  white-space: nowrap;
  animation: float 3s ease-in-out infinite;
  backdrop-filter: blur(8px);
}
.badge span { margin-right: 4px; }
.badge--1 { top: 20px;  left: -14px; animation-delay: 0s; }
.badge--2 { bottom: 28px; left: -24px; animation-delay: .9s; }
.badge--3 { top: 36px;  right: -14px; animation-delay: 1.8s; }

@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

/* ===========================
   ABOUT
=========================== */
.about {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,.07) 0%, transparent 70%);
  top: -200px; right: -150px;
  pointer-events: none;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  position: relative;
}

.about__text p {
  color: var(--slate-mid);
  margin-bottom: 18px;
  line-height: 1.8;
}
.about__text p:last-child { margin-bottom: 0; }
.about__text strong { color: var(--slate); font-weight: 600; }

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--indigo));
}
.stat:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.stat__num {
  display: block;
  font-size: 2.1rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.03em;
}
.stat__label {
  display: block;
  font-size: .78rem;
  font-weight: 500;
  color: var(--slate-light);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .06em;
}

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

.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 30px 24px;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--indigo));
  opacity: 0;
  transition: opacity var(--transition);
}
.skill-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(37,99,235,.25);
}
.skill-card:hover::before { opacity: 1; }

.skill-card__icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}

.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate);
  margin-bottom: 8px;
}

.skill-card p {
  font-size: .86rem;
  color: var(--slate-mid);
  line-height: 1.65;
}

/* ===========================
   PROJECTS
=========================== */
.projects {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  position: relative;
  overflow: hidden;
}

.projects::after {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.07) 0%, transparent 70%);
  bottom: -200px; left: -100px;
  pointer-events: none;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  position: relative;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,.04) 0%, rgba(99,102,241,.04) 100%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}
.project-card:hover::after { opacity: 1; }

/* left accent bar */
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(180deg, var(--blue), var(--indigo));
  border-radius: 4px 0 0 4px;
}

.project-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

.project-card__icon { font-size: 2.1rem; }

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

.tag {
  background: var(--blue-light);
  color: var(--blue);
  font-size: .7rem;
  font-weight: 700;
  padding: 3px 11px;
  border-radius: 999px;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate);
  margin-bottom: 12px;
}

.project-card__desc {
  font-size: .9rem;
  color: var(--slate-mid);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 22px;
}

.project-card__footer { margin-top: auto; }

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--blue);
  padding: 7px 16px;
  border: 1.5px solid var(--blue-light);
  border-radius: 999px;
  background: var(--blue-xlight);
  transition: all var(--transition);
}
.project-link:hover {
  background: var(--blue-light);
  border-color: var(--blue);
  gap: 10px;
}

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

.contact__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 44px;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  display: block;
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--indigo));
  opacity: 0;
  transition: opacity var(--transition);
}
.contact-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  border-color: rgba(37,99,235,.25);
}
.contact-card:hover::before { opacity: 1; }

.contact-card__icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.contact-card h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--slate);
  margin-bottom: 6px;
}

.contact-card p {
  font-size: .78rem;
  color: var(--slate-mid);
  word-break: break-all;
  line-height: 1.4;
}

.contact__cta { text-align: center; }

/* ===========================
   FOOTER
=========================== */
.footer {
  background: var(--slate);
  color: var(--slate-light);
  text-align: center;
  padding: 30px 24px;
  font-size: .84rem;
}
.footer a {
  color: #93C5FD;
  transition: color var(--transition);
}
.footer a:hover { color: #fff; }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 120px;
    gap: 52px;
  }
  .hero__eyebrow { justify-content: center; }
  .hero__cta { justify-content: center; }
  .about__grid { grid-template-columns: 1fr; gap: 44px; }
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .projects__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .nav__links { display: none; }
  .hamburger { display: flex; }
  .skills__grid { grid-template-columns: 1fr; }
  .about__stats { grid-template-columns: 1fr 1fr; }
  .contact__grid { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .hero__visual { width: 240px; height: 240px; }
  .avatar { width: 170px; height: 170px; }
  .avatar__initials { font-size: 2.4rem; }
}

/* ===========================
   SCROLL REVEAL
=========================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}