:root {
  --bg: #f5f7fb;
  --bg-alt: #edf2f9;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-strong: #ffffff;
  --card: #ffffff;
  --card-soft: #f1f5fb;
  --text: #122033;
  --text-soft: #4b5d75;
  --muted: #73829a;
  --primary: #2a5b8f;
  --primary-strong: #1d4674;
  --secondary: #7f9bb5;
  --accent: #76b7c8;
  --border: rgba(18, 32, 51, 0.1);
  --shadow: 0 18px 40px rgba(18, 32, 51, 0.08);
  --success: #2e8b57;
  --warning: #d58b2c;
  --error: #c85f5f;
  --info: #3b7fc4;
  --hero-gradient: linear-gradient(135deg, rgba(42, 91, 143, 0.18), rgba(118, 183, 200, 0.16));
  --brand-gradient: linear-gradient(135deg, #2a5b8f, #76b7c8);
}

:root[data-theme='dark'] {
  --bg: #0d1726;
  --bg-alt: #101d2d;
  --surface: rgba(16, 29, 45, 0.72);
  --surface-strong: #132235;
  --card: #122334;
  --card-soft: #172b3f;
  --text: #eaf3ff;
  --text-soft: #c4d3e9;
  --muted: #8ea5bd;
  --primary: #8eb8d9;
  --primary-strong: #bfdcff;
  --secondary: #56779b;
  --accent: #7cc7d7;
  --border: rgba(234, 243, 255, 0.12);
  --shadow: 0 22px 50px rgba(3, 8, 15, 0.35);
  --success: #78c59a;
  --warning: #f1bf5d;
  --error: #e78b8b;
  --info: #7caeea;
  --hero-gradient: linear-gradient(135deg, rgba(120, 160, 214, 0.18), rgba(124, 199, 215, 0.12));
  --brand-gradient: linear-gradient(135deg, #8eb8d9, #7cc7d7);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img {
  max-width: 100%;
  display: block;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 6rem 0;
}

.section-soft {
  background: var(--bg-alt);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 2.6rem;
  height: 2.6rem;
  display: inline-grid;
  place-items: center;
  border-radius: 0.9rem;
  background: var(--brand-gradient);
  color: #f5fbff;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.brand-text {
  font-size: 0.96rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav-menu a {
  color: var(--text-soft);
  font-size: 0.96rem;
  transition: color 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--text);
}

.theme-picker,
.nav-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.15rem 0.6rem;
}

.theme-picker select {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--text);
  padding: 0.7rem 1.8rem 0.7rem 0.7rem;
  font-weight: 600;
  cursor: pointer;
}

.theme-picker select:focus-visible,
.nav-toggle:focus-visible,
.btn:hover,
.btn:focus-visible,
.chip:hover,
.goal-card:hover,
.interest-card:hover,
.project-card:hover,
.inspiration-card:hover {
  transform: translateY(-2px);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-toggle {
  display: none;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0.45rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

.hero {
  background: var(--hero-gradient);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 2rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(118, 183, 200, 0.16);
  color: var(--primary-strong);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2 {
  letter-spacing: -0.05em;
  margin: 1rem 0 1rem;
  line-height: 1.05;
}

.hero-copy h1 {
  font-size: clamp(2.9rem, 5vw, 5rem);
}

.lead {
  font-size: clamp(1.05rem, 1.9vw, 1.25rem);
  max-width: 650px;
  color: var(--text-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--brand-gradient);
  color: white;
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.hero-details {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
  padding: 0;
  margin: 1.4rem 0 0;
  color: var(--text-soft);
  font-size: 0.96rem;
}

.hero-details li {
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid var(--border);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.avatar-card {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1.1;
  display: grid;
  place-items: center;
  border-radius: 2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.18), rgba(255,255,255,0.08));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.avatar-ring {
  width: min(72%, 260px);
  aspect-ratio: 1;
  border-radius: 50%;
  padding: 1.1rem;
  background: linear-gradient(135deg, rgba(42,91,143,0.25), rgba(118,183,200,0.35));
  box-shadow: inset 0 0 1rem rgba(255,255,255,0.2);
}

.avatar-core {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #1d4674, #7cc7d7);
  color: #fff;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.floating-tag {
  position: absolute;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  box-shadow: var(--shadow);
  font-size: 0.82rem;
  font-weight: 600;
}

.tag-one {
  top: 16%;
  right: 8%;
}

.tag-two {
  left: 10%;
  bottom: 22%;
}

.tag-three {
  right: 15%;
  bottom: 10%;
}

.section-heading {
  max-width: 700px;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  font-size: clamp(2.1rem, 4vw, 3rem);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
}

.about-card,
.skill-group,
.project-card,
.goal-card,
.inspiration-card,
.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
}

.about-card {
  padding: 1.6rem;
}

.about-card p {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  color: var(--text-soft);
}

.highlight-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.highlight-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-soft);
}

.timeline {
  position: relative;
  display: grid;
  gap: 1.1rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.8rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), rgba(0,0,0,0));
}

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

.timeline-dot {
  position: absolute;
  left: 0.2rem;
  top: 0.6rem;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50%;
  background: var(--brand-gradient);
  border: 4px solid var(--bg);
  box-shadow: 0 0 0 6px rgba(118, 183, 200, 0.18);
}

.timeline-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow);
}

.timeline-label {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-content h3 {
  margin: 0.4rem 0 0.35rem;
  font-size: 1.4rem;
}

.timeline-content p {
  margin: 0;
  color: var(--text-soft);
}

.skills-grid,
.goal-grid,
.inspiration-grid,
.interest-grid,
.project-grid {
  display: grid;
  gap: 1.2rem;
}

.skills-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.skill-group {
  padding: 1.5rem;
}

.skill-group h3 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  background: var(--card-soft);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
}

.chip.learning {
  background: rgba(118, 183, 200, 0.12);
  color: var(--primary-strong);
}

.project-grid {
  grid-template-columns: minmax(0, 1fr);
}

.project-card {
  padding: 1.5rem;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.project-tag,
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}

.project-tag {
  background: rgba(118, 183, 200, 0.12);
  color: var(--primary-strong);
}

.status-badge {
  background: rgba(46, 139, 87, 0.12);
  color: var(--success);
}

.project-card h3 {
  margin: 0 0 0.8rem;
  font-size: 2rem;
}

.project-card p {
  margin: 0;
  color: var(--text-soft);
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.project-meta span {
  background: var(--card-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.5rem 0.7rem;
  color: var(--text-soft);
  font-size: 0.78rem;
}

.interest-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.interest-card {
  padding: 1.2rem 1rem;
  text-align: center;
}

.interest-card span {
  font-size: 2rem;
}

.interest-card h3 {
  margin: 0.8rem 0 0;
  font-size: 1rem;
}

.goal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.goal-card {
  padding: 1.3rem 1.2rem;
  min-height: 132px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--card), color-mix(in srgb, var(--card-soft) 70%, transparent));
}

.goal-card h3 {
  margin: 0;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.inspiration-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.inspiration-card {
  padding: 1.2rem;
  text-align: center;
}

.inspiration-card h3 {
  margin: 0;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 1.5rem;
}

.contact-section {
  background: linear-gradient(180deg, var(--bg), var(--bg-alt));
}

.contact-wrap h2 {
  margin: 1rem 0;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

.contact-wrap p {
  max-width: 620px;
  color: var(--text-soft);
}

.contact-card {
  padding: 1.4rem;
  display: grid;
  gap: 0.9rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.9rem 1rem;
  background: var(--card-soft);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

.contact-item .label {
  font-size: 0.75rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 80px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.7rem;
    padding: 1rem;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 1.2rem;
    box-shadow: var(--shadow);
  }

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

  .nav-menu a,
  .theme-picker {
    width: 100%;
    justify-content: center;
  }

  .hero-grid,
  .about-grid,
  .skills-grid,
  .goal-grid,
  .inspiration-grid,
  .interest-grid,
  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .goal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .interest-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    flex-direction: column;
    justify-content: center;
    padding: 1rem 0;
    text-align: center;
  }
}

@media (max-width: 540px) {
  .section {
    padding: 4.5rem 0;
  }

  .brand-text {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .goal-grid,
  .interest-grid,
  .inspiration-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}