*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--sp-4));
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--c-brand-strong);
}

a:hover {
  color: var(--c-accent);
}

.container {
  width: min(calc(100% - 2 * var(--sp-5)), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--sp-4);
  top: -100%;
  z-index: 1000;
  padding: var(--sp-2) var(--sp-4);
  color: #fff;
  background: var(--c-brand-strong);
  border-radius: var(--r-sm);
  transition: top var(--t-fast);
}

.skip-link:focus {
  top: var(--sp-2);
}

:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  min-height: var(--nav-h);
  padding-inline: var(--sp-5);
  background: rgba(248, 250, 252, 0.82);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

[data-theme="dark"] .site-nav {
  background: rgba(11, 17, 32, 0.82);
}

.site-nav.is-scrolled {
  box-shadow: 0 8px 30px rgba(var(--c-shadow), 0.08);
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 800;
  color: var(--c-text);
  text-decoration: none;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
}

.nav-menu a {
  display: inline-block;
  padding: var(--sp-2) var(--sp-3);
  color: var(--c-muted);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--r-pill);
  transition: color var(--t-fast), background var(--t-fast);
}

.nav-menu a:hover,
.nav-menu a[aria-current="true"] {
  color: var(--c-text);
  background: var(--c-chip-bg);
}

.nav-menu .nav-cta {
  color: #fff;
  background: var(--c-brand);
}

.nav-menu .nav-cta:hover {
  color: #fff;
  background: var(--c-brand-strong);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 38px;
  height: 38px;
  padding: 0;
  color: var(--c-text);
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  cursor: pointer;
}

.nav-toggle:hover {
  background: var(--c-chip-bg);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform var(--t-med), opacity var(--t-med);
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 10vh, 7rem) var(--sp-8);
  text-align: center;
}

.hero-parallax {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  will-change: transform;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.hero-blob {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  pointer-events: none;
}

.hero-blob-1 {
  top: -12vw;
  left: -8vw;
  width: 44vw;
  height: 44vw;
  max-width: 560px;
  max-height: 560px;
  background: radial-gradient(circle at 30% 30%, var(--c-hero-grad-1), transparent 65%);
  animation: drift 16s var(--ease-out) infinite alternate;
}

.hero-blob-2 {
  right: -10vw;
  bottom: -14vw;
  width: 40vw;
  height: 40vw;
  max-width: 520px;
  max-height: 520px;
  background: radial-gradient(circle at 70% 70%, var(--c-hero-grad-2), transparent 65%);
  animation: drift 20s var(--ease-out) infinite alternate-reverse;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }

  to {
    transform: translate3d(6vw, 8vh, 0) scale(1.15);
  }
}

.hero-avatar {
  margin: 0;
}

.hero-avatar img {
  display: block;
  width: clamp(160px, 24vw, 232px);
  height: clamp(160px, 24vw, 232px);
  object-fit: cover;
  border: 4px solid var(--c-bg-elev);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--c-brand), 0 18px 40px rgba(var(--c-shadow), 0.25);
}

.hero-name {
  margin: 0;
  font-size: var(--fs-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-label {
  margin: 0;
  color: var(--c-muted);
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 600;
}

.hero-contact {
  align-items: center;
  font-style: normal;
}

/* When a record wraps on narrow screens, keep its chips centered. */
.hero-contact .contact-group {
  justify-content: center;
}

.hero-social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  color: var(--c-text);
  text-decoration: none;
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  transition: transform var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.icon-btn:hover {
  color: var(--c-text);
  background: var(--c-chip-bg);
  border-color: var(--c-brand);
  transform: translateY(-2px);
}

.icon-svg,
.icon-svg svg {
  display: inline-block;
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-3) var(--sp-5);
  font-weight: 800;
  text-decoration: none;
  border-radius: var(--r-pill);
  transition: transform var(--t-fast), box-shadow var(--t-med), background var(--t-fast);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(var(--c-shadow), 0.22);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, var(--c-brand), var(--c-accent));
}

.btn-ghost {
  color: var(--c-text);
  border: 2px solid var(--c-border);
}

/* Sections and cards */
.page-content {
  padding-bottom: var(--sp-8);
}

.section-heading {
  margin: var(--sp-7) 0 var(--sp-5);
  font-size: var(--fs-xl);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-heading::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  margin-top: var(--sp-2);
  background: linear-gradient(90deg, var(--c-brand), var(--c-accent));
  border-radius: var(--r-pill);
}

.lead {
  max-width: 72ch;
  color: var(--c-muted);
  font-size: var(--fs-lg);
}

.card {
  padding: var(--sp-5);
  background: var(--c-bg-elev);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}

.card:hover {
  border-color: var(--c-brand);
  box-shadow: 0 12px 32px rgba(var(--c-shadow), 0.12);
  transform: translateY(-3px);
}

.card-title {
  margin-top: 0;
  margin-bottom: var(--sp-2);
  font-size: var(--fs-lg);
}

.card-title a {
  text-decoration: none;
}

.badge {
  display: inline-block;
  margin: var(--sp-1) 0;
  padding: 2px var(--sp-3);
  color: var(--c-muted);
  font-size: var(--fs-sm);
  background: var(--c-chip-bg);
  border-radius: var(--r-pill);
}

.ticks {
  margin: var(--sp-2) 0 var(--sp-3);
  padding: 0;
  list-style: none;
}

.ticks li {
  position: relative;
  margin-bottom: var(--sp-1);
  padding-inline-start: var(--sp-4);
}

.ticks li::before {
  content: "▸";
  position: absolute;
  inset-inline-start: 0;
  color: var(--c-brand);
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  color: var(--c-muted);
  font-size: var(--fs-sm);
}

/* Timeline */
.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 2px;
  background: linear-gradient(var(--c-brand), var(--c-accent));
}

.timeline-item {
  position: relative;
  margin-inline-start: var(--sp-6);
  margin-bottom: var(--sp-4);
}

.timeline-item::before {
  content: "";
  position: absolute;
  inset-block-start: 1.35rem;
  inset-inline-start: calc(-1 * var(--sp-6) - 6px);
  width: 14px;
  height: 14px;
  background: var(--c-brand-strong);
  border: 3px solid var(--c-bg);
  border-radius: 50%;
}

/* Project grid: staggered masonry columns, cards keep their natural height. */
.card-grid {
  column-count: 1;
  column-gap: var(--sp-4);
}

.card-grid > .card {
  break-inside: avoid;
  margin: 0 0 var(--sp-4);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin: var(--sp-2) 0;
  padding: 0;
  list-style: none;
}

.chip-outline {
  display: inline-block;
  padding: 2px var(--sp-3);
  color: var(--c-muted);
  font-size: var(--fs-sm);
  background: var(--c-chip-bg);
  border: 1px solid var(--c-chip-border);
  border-radius: var(--r-pill);
}

button.chip-outline {
  cursor: pointer;
}

button.chip-outline[aria-pressed="true"] {
  color: #fff;
  background: var(--c-brand);
  border-color: var(--c-brand);
}

.gallery {
  column-width: 220px;
  column-gap: var(--sp-3);
  margin: var(--sp-3) 0;
}

.gallery figure {
  margin: 0 0 var(--sp-3);
  overflow: hidden;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  break-inside: avoid;
}

.gallery img {
  display: block;
  width: 100%;
  transition: transform var(--t-med);
}

.gallery figure:hover img {
  transform: scale(1.03);
}

.gallery figcaption {
  padding: var(--sp-2);
  color: var(--c-muted);
  font-size: var(--fs-sm);
}

/* Skills: staggered columns of naturally sized rows. */
.skill-list {
  column-width: 240px;
  column-gap: var(--sp-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-item {
  break-inside: avoid;
  margin: 0 0 var(--sp-4);
}

.skill-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-2);
  margin-bottom: var(--sp-1);
}

.skill-name {
  font-weight: 800;
}

.skill-label {
  color: var(--c-muted);
  font-size: var(--fs-sm);
}

.skill-bar {
  height: 22px;
  overflow: hidden;
  background: var(--c-border);
  border-radius: var(--r-pill);
}

.skill-bar-fill {
  display: flex;
  align-items: center;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(90deg, var(--c-brand), var(--c-accent));
  border-radius: var(--r-pill);
  transform-origin: left;
}

.skill-bar-label {
  padding-inline: var(--sp-2);
  color: #fff;
  font-size: var(--fs-xs);
  font-weight: 800;
  white-space: nowrap;
}

html.js .skill-bar-fill {
  transform: scaleX(0);
  transition: transform 900ms var(--ease-out);
}

html.js .skill-bar-fill.in-view {
  transform: scaleX(1);
}

/* Lower information grid: aligned pairs (Education|Volunteer, Languages|Interests). */
.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  align-items: start;
}

.info-grid > section {
  margin: 0;
}

.info-grid .card {
  margin-bottom: var(--sp-2);
}

/* Footer */
.page-footer {
  padding-block: var(--sp-6);
  color: var(--c-muted);
  text-align: center;
  border-top: 1px solid var(--c-border);
}

.page-footer p {
  margin: var(--sp-1) 0;
}

.page-footer a {
  color: var(--c-brand-strong);
}

/* Floating back-to-top button */
.back-to-top {
  position: fixed;
  inset-inline-end: var(--sp-5);
  bottom: var(--sp-5);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  color: #fff;
  font-size: 1.15rem;
  background: linear-gradient(120deg, var(--c-brand), var(--c-accent));
  border: 0;
  border-radius: 50%;
  box-shadow: 0 10px 26px rgba(var(--c-shadow), 0.28);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--t-med), transform var(--t-med), visibility var(--t-med);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  transform: translateY(-2px);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top.is-visible:hover,
.back-to-top.is-visible:focus-visible {
  transform: translateY(-2px);
}

/* Reveal animation */
.reveal {
  opacity: 1;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (min-width: 760px) {
  .card-grid {
    column-count: 2;
  }
}

@media (min-width: 1000px) {
  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  /* Keep the toggles right-aligned now that .theme-toggle no longer sets this. */
  .nav-brand {
    margin-inline-end: auto;
  }

  .nav-menu {
    position: fixed;
    inset: var(--nav-h) 0 auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
    margin: 0;
    padding: var(--sp-4);
    background: var(--c-bg-elev);
    border-bottom: 1px solid var(--c-border);
    box-shadow: 0 18px 40px rgba(var(--c-shadow), 0.18);
  }

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

  .nav-menu a {
    display: block;
    padding: var(--sp-3);
  }

  .nav-toggle {
    margin-left: 0;
  }

  .site-nav.open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .site-nav.open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .site-nav.open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

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

  .hero-blob,
  .caret {
    animation: none;
  }

  html.js .reveal,
  html.js .skill-bar-fill {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover,
  .btn:hover,
  .icon-btn:hover,
  .gallery figure:hover img {
    transform: none;
  }

  .back-to-top {
    transition: none;
  }

  .hero-canvas {
    display: none;
  }

  .hero-parallax {
    transition: none;
    transform: none !important;
  }
}