/* main.css — component & layout styles */

/* ── Base ──────────────────────────────────────────────────────────────────── */
body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--theme-transition);
  overflow-x: hidden;
}

::selection {
  background: rgba(var(--accent-1-rgb), 0.28);
  color: var(--text-primary);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: var(--space-24);
  position: relative;
}

/* Utility: gradient text */
.gradient-text {
  color: var(--accent-1);
}

.mono {
  font-family: var(--font-mono);
}

/* Section heading block */
.section-head {
  max-width: 720px;
  margin-bottom: var(--space-12);
}
.section-head.center {
  margin-inline: auto;
  text-align: center;
}
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-1);
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: 0.95rem;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: transform var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out),
    background-color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--gradient);
  color: var(--text-on-accent);
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(var(--accent-1-rgb), 0.4);
}
.btn-ghost {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.btn-gradient-border {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid transparent;
  background-image: linear-gradient(var(--bg-secondary), var(--bg-secondary)),
    var(--gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}
.btn-gradient-border:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.85rem;
}

/* ── Skip link & focus ─────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 200;
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hover);
  transition: top 0.2s var(--ease-out);
}
.skip-link:focus {
  top: var(--space-4);
}
:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Scroll progress bar ───────────────────────────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--gradient);
  z-index: 120;
  will-change: transform;
}

/* ── Navigation ────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: transform 0.4s var(--ease-out), background-color 0.3s var(--ease-out),
    border-color 0.3s var(--ease-out), backdrop-filter 0.3s var(--ease-out);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg-primary) 70%, transparent);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.nav.hidden {
  transform: translateY(-100%);
}
.nav__inner {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.nav__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav__link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--duration) var(--ease-out);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 2px;
  height: 2px;
  background: var(--gradient);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--duration) var(--ease-out);
}
.nav__link:hover {
  color: var(--text-primary);
}
.nav__link.active {
  color: var(--text-primary);
}
.nav__link.active::after {
  transform: scaleX(1);
}
.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    transform var(--duration) var(--ease-out);
}
.theme-toggle:hover {
  color: var(--accent-1);
  border-color: var(--border-hover);
  transform: rotate(15deg);
}
.theme-toggle .sun {
  display: none;
}
.theme-toggle .moon {
  display: block;
}
[data-theme="dark"] .theme-toggle .sun {
  display: block;
}
[data-theme="dark"] .theme-toggle .moon {
  display: none;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun {
    display: block;
  }
  :root:not([data-theme="light"]) .theme-toggle .moon {
    display: none;
  }
}

/* Hamburger */
.nav__burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 11px;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.2s var(--ease-out);
}
.nav__burger span:nth-child(1) {
  top: 15px;
}
.nav__burger span:nth-child(2) {
  top: 21px;
}
.nav__burger span:nth-child(3) {
  top: 27px;
}
.nav__burger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav__burger.open span:nth-child(2) {
  opacity: 0;
}
.nav__burger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile drawer */
.nav__drawer {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: color-mix(in srgb, var(--bg-secondary) 96%, transparent);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-6) var(--space-8);
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.35s var(--ease-out), opacity 0.3s var(--ease-out),
    visibility 0.3s var(--ease-out);
  z-index: 99;
}
.nav__drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}
.nav__drawer a {
  padding: var(--space-3) var(--space-2);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  border-bottom: 1px solid var(--border);
}
.nav__drawer a:hover {
  color: var(--text-primary);
}

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}
.hero-mesh,
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-mesh span {
  position: absolute;
  border-radius: 45% 55% 60% 40% / 50% 45% 55% 50%;
  filter: blur(48px);
  opacity: 0.85;
  mix-blend-mode: multiply;
}
.hero-mesh span:nth-child(1) {
  width: 520px;
  height: 520px;
  top: -140px;
  left: -120px;
  background: radial-gradient(circle, rgba(var(--accent-3-rgb), 0.95), transparent 72%);
}
.hero-mesh span:nth-child(2) {
  width: 480px;
  height: 480px;
  top: -80px;
  right: -120px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.9), transparent 72%);
  animation-delay: -6s;
}
.hero-mesh span:nth-child(3) {
  width: 520px;
  height: 520px;
  bottom: -180px;
  left: 8%;
  background: radial-gradient(circle, rgba(var(--accent-5-rgb), 0.85), transparent 72%);
  animation-delay: -12s;
}
.hero-mesh span:nth-child(4) {
  width: 500px;
  height: 500px;
  bottom: -140px;
  right: 4%;
  background: radial-gradient(circle, rgba(var(--accent-4-rgb), 0.85), transparent 72%);
  animation-delay: -3s;
}
/* Dark theme: blobs become soft luminous glows instead of defined shapes */
[data-theme="dark"] .hero-mesh span {
  filter: blur(80px);
  opacity: 0.5;
  mix-blend-mode: screen;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero-mesh span {
    filter: blur(80px);
    opacity: 0.5;
    mix-blend-mode: screen;
  }
}
.hero-particles .particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-1);
  opacity: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  padding-inline: var(--space-6);
}
.hero__wave {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 9vw, 4.75rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.hero__title {
  font-size: clamp(1.25rem, 3.5vw, 1.75rem);
  font-weight: 500;
  color: var(--text-secondary);
  min-height: 1.6em;
  margin-bottom: var(--space-6);
}
.typewriter-cursor {
  display: inline-block;
  width: 3px;
  height: 1.05em;
  background: var(--accent-1);
  margin-left: 4px;
  vertical-align: text-bottom;
  border-radius: 2px;
}
.hero__tagline {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto var(--space-8);
}
.hero__cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

/* Stats bar */
.hero__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  max-width: 720px;
  margin-inline: auto;
}
.stat {
  min-width: 110px;
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1;
}
.stat__label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: grid;
  justify-items: center;
  gap: var(--space-2);
}
.scroll-indicator__mouse {
  width: 22px;
  height: 34px;
  border: 2px solid var(--text-muted);
  border-radius: var(--radius-full);
  display: grid;
  justify-items: center;
  padding-top: 6px;
}
.scroll-indicator__mouse::before {
  content: "";
  width: 3px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent-1);
}

/* ── About ─────────────────────────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-16);
  align-items: start;
}
.about__card {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  text-align: center;
}
.about__avatar-wrap {
  width: 150px;
  aspect-ratio: 1;
  margin: 0 auto var(--space-6);
  border-radius: 50%;
  padding: 4px;
  background: var(--gradient);
}
.gradient-ring {
  background-image: var(--gradient);
}
.about__avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 4px solid var(--bg-card);
  object-fit: cover;
}
.about__github-name {
  font-weight: 600;
  font-size: 1.1rem;
}
.about__github-handle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-1);
  margin-bottom: var(--space-5);
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-5);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
}
.chip strong {
  color: var(--text-primary);
}
.location-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}
.social-row {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
}
.social-btn {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    transform var(--duration) var(--ease-out), background-color var(--duration) var(--ease-out);
}
.social-btn:hover {
  color: var(--accent-1);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.about__body p {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  font-size: 1.02rem;
}
.about__body p strong {
  color: var(--text-primary);
}
.about__strengths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin: var(--space-8) 0;
}
.strength {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.strength__icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--gradient-soft);
  color: var(--accent-1);
  border: 1px solid var(--border);
}
.strength__title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.strength__text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.soft-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-6) 0;
}
.soft-skills .chip {
  background: var(--gradient-soft);
}
.availability {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-5);
  font-size: 0.9rem;
  font-weight: 500;
}
.availability-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
}

/* ── Skills ────────────────────────────────────────────────────────────────── */
.skills__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}
.filter-tab {
  position: relative;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    background-color var(--duration) var(--ease-out);
}
.filter-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.filter-tab[aria-selected="true"] {
  color: var(--text-on-accent);
  background: var(--gradient);
  border-color: transparent;
}
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-4);
}
.skill-card {
  contain: layout style;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out), background-color var(--duration) var(--ease-out);
}
.skill-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: var(--cat-color, var(--border-hover));
  box-shadow: 0 10px 30px -10px var(--cat-color, rgba(var(--accent-1-rgb), 0.3));
}
.skill-card__icon {
  font-size: 2.25rem;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: var(--space-3);
}
.skill-card__letter {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-on-accent);
}
.skill-card__name {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--space-1);
}
.skill-card__level {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
.skill-card.is-hidden {
  display: none;
}

/* ── Experience timeline ───────────────────────────────────────────────────── */
.timeline {
  position: relative;
  max-width: 980px;
  margin-inline: auto;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%) scaleY(var(--timeline-progress, 0));
  transform-origin: top;
  background: var(--gradient);
  transition: transform 0.1s linear;
}
.tl-entry {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.tl-entry:last-child {
  margin-bottom: 0;
}
.timeline-dot {
  position: absolute;
  left: 50%;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-1);
  transform: translateX(-50%);
  z-index: 2;
}
.tl-meta {
  text-align: right;
  padding-right: var(--space-8);
}
.tl-entry:nth-child(even) .tl-meta {
  order: 2;
  text-align: left;
  padding-right: 0;
  padding-left: var(--space-8);
}
.tl-entry:nth-child(even) .tl-card {
  order: 1;
}
.tl-company {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.tl-entry:nth-child(even) .tl-company {
  flex-direction: row-reverse;
}
.company-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.tl-company__name {
  font-size: 1.15rem;
  font-weight: 700;
}
.tl-type {
  display: inline-block;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 2px var(--space-3);
  margin-bottom: var(--space-2);
}
.tl-dates {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.tl-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  contain: layout style;
  transition: transform var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out),
    border-color var(--duration) var(--ease-out);
}
.tl-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.tl-role {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.tl-card__sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.tl-bullets {
  list-style: none;
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.tl-bullets li {
  position: relative;
  padding-left: var(--space-5);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.tl-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-1);
}
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.pill {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--accent-1);
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 3px var(--space-3);
}

/* ── Projects ──────────────────────────────────────────────────────────────── */
.projects__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}
.featured-project {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  overflow: hidden;
  margin-bottom: var(--space-8);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  contain: layout style;
}
.featured-project__banner {
  height: 8px;
  background: var(--gradient);
}
.featured-project__body {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-8);
  padding: var(--space-8);
}
.featured-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-1);
  margin-bottom: var(--space-3);
}
.featured-project__name {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--space-3);
}
.featured-project__desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
}
.featured-project__cta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}
.featured-stats {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-5);
}
.featured-stats .fs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.featured-stats .fs strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* Language breakdown bar */
.lang-bar {
  display: flex;
  height: 8px;
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-3);
  background: var(--bg-secondary);
}
.lang-bar span {
  height: 100%;
}
.lang-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.lang-legend .ll {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}
.lang-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

/* Projects grid (bento) */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  contain: layout style;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out);
}
.project-card:hover {
  transform: scale(1.02);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.project-card__bar {
  height: 5px;
  width: 100%;
}
.project-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
}
.project-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.lang-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
.project-card__name {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  transition: color var(--duration) var(--ease-out);
}
.project-card:hover .project-card__name {
  color: var(--accent-1);
}
.project-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-4);
  flex: 1;
}
.project-card__topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--space-4);
}
.topic-tag {
  font-size: 0.68rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 2px 8px;
}
.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}
.project-stats {
  display: flex;
  gap: var(--space-4);
  font-size: 0.78rem;
  color: var(--text-secondary);
}
.project-stats span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.project-links {
  display: flex;
  gap: var(--space-2);
}
.icon-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    background-color var(--duration) var(--ease-out);
}
.icon-btn:hover {
  color: var(--accent-1);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}
.project-card.is-hidden {
  display: none;
}

/* ── Writing / Blog ────────────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}
.blog-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  contain: layout style;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.blog-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
}
.blog-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--text-primary);
}
.blog-source svg {
  width: 16px;
  height: 16px;
}
.blog-date {
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.blog-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
}
.blog-card__summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  flex: 1;
}
.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-2);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-1);
  transition: gap var(--duration) var(--ease-out);
}
.blog-card__link:hover {
  gap: 12px;
}
.blog-cta {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

/* ── Education & achievements ──────────────────────────────────────────────── */
.edu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
.col-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.edu-card,
.achv-card {
  display: flex;
  gap: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-5);
  contain: layout style;
  transition: transform var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
}
.edu-card:hover,
.achv-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
}
.edu-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--gradient-soft);
  color: var(--accent-1);
}
.edu-card__degree {
  font-weight: 700;
  font-size: 1.05rem;
}
.edu-card__field {
  color: var(--accent-1);
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
}
.edu-card__meta {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.achv-metric {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 90px;
}
.achv-card__label {
  font-weight: 600;
  font-size: 0.98rem;
}
.achv-card__detail {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ── Contact ───────────────────────────────────────────────────────────────── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-16);
  align-items: start;
}
.contact__lead {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.contact__copy {
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
}
.contact-methods {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  transition: transform var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out),
    background var(--duration) var(--ease-out);
}
.contact-method:hover {
  transform: translateX(6px);
  border-color: var(--border-hover);
  background: var(--gradient-soft);
}
.contact-method__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  background: var(--bg-secondary);
  color: var(--accent-1);
  border: 1px solid var(--border);
}
.contact-method__label {
  font-size: 0.78rem;
  color: var(--text-muted);
}
.contact-method__value {
  font-weight: 600;
  font-size: 0.95rem;
  word-break: break-word;
}
.contact-method__arrow {
  margin-left: auto;
  color: var(--text-muted);
  transition: transform var(--duration) var(--ease-out), color var(--duration) var(--ease-out);
}
.contact-method:hover .contact-method__arrow {
  transform: translateX(4px);
  color: var(--accent-1);
}
.response-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
}
.field {
  position: relative;
  margin-bottom: var(--space-6);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4) var(--space-2);
  color: var(--text-primary);
  transition: border-color var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out);
}
.field textarea {
  min-height: 120px;
  resize: vertical;
}
.field select {
  padding-top: var(--space-4);
  padding-bottom: var(--space-2);
}
.field label {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  color: var(--text-muted);
  font-size: 0.95rem;
  pointer-events: none;
  transition: transform 0.2s var(--ease-out), color 0.2s var(--ease-out), font-size 0.2s var(--ease-out);
  transform-origin: 0 0;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(var(--accent-1-rgb), 0.22);
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label,
.field select:focus + label,
.field select.has-value + label {
  transform: translateY(-10px) scale(0.78);
  color: var(--accent-1);
}
.field input::placeholder,
.field textarea::placeholder {
  color: transparent;
}
.field__error {
  display: block;
  font-size: 0.75rem;
  color: #f87171;
  margin-top: var(--space-2);
  min-height: 1em;
}
.field.invalid input,
.field.invalid textarea,
.field.invalid select {
  border-color: #f87171;
}
.form-submit {
  width: 100%;
}
.form-status {
  margin-top: var(--space-4);
  font-size: 0.88rem;
  text-align: center;
  min-height: 1.2em;
  transition: color var(--duration) var(--ease-out);
}
.form-status.success {
  color: var(--success);
  font-weight: 600;
}
.form-status.error {
  color: #e5484d;
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-16) var(--space-8);
  background: var(--bg-secondary);
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}
.footer__brand {
  max-width: 320px;
}
.footer__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
}
.footer__tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.footer__nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease-out);
}
.footer__nav a:hover {
  color: var(--accent-1);
}
.footer__socials {
  display: flex;
  gap: var(--space-3);
}
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Back to top */
.back-to-top {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  color: var(--text-on-accent);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.8);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), visibility 0.3s;
  z-index: 90;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
}

/* Custom cursor (desktop, pointer-fine only) */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-1);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s var(--ease-out), height 0.2s var(--ease-out),
    background-color 0.2s var(--ease-out);
  mix-blend-mode: difference;
  display: none;
}
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid rgba(var(--accent-1-rgb), 0.5);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.12s var(--ease-out), width 0.2s, height 0.2s, border-color 0.2s;
  display: none;
}
@media (hover: hover) and (pointer: fine) {
  body.has-cursor .cursor-dot,
  body.has-cursor .cursor-ring {
    display: block;
  }
  body.has-cursor.cursor-active .cursor-ring {
    width: 52px;
    height: 52px;
    border-color: var(--accent-2);
  }
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 980px) {
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  .about__card {
    position: static;
    max-width: 420px;
    margin-inline: auto;
  }
  .featured-project__body {
    grid-template-columns: 1fr;
  }
  .edu__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

@media (max-width: 768px) {
  section {
    padding-block: var(--space-16);
  }
  .nav__links {
    display: none;
  }
  .nav__burger {
    display: block;
  }
  .hero__stats {
    gap: var(--space-6);
  }

  /* Timeline collapses to a single left rail */
  .timeline::before {
    left: 8px;
  }
  .tl-entry {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding-left: var(--space-8);
  }
  .timeline-dot {
    left: 8px;
  }
  .tl-meta,
  .tl-entry:nth-child(even) .tl-meta {
    text-align: left;
    padding: 0;
    order: 0;
  }
  .tl-entry:nth-child(even) .tl-company {
    flex-direction: row;
  }
  .tl-entry:nth-child(even) .tl-card {
    order: 0;
  }
}

@media (max-width: 540px) {
  .about__strengths {
    grid-template-columns: 1fr;
  }
  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }
  .featured-project__cta {
    flex-direction: column;
  }
  .footer__top {
    flex-direction: column;
  }
}