/* === Theme tokens === */
:root {
  --bg: #0b0c10;
  --surface: #12131a;
  --text: #f5f7ff;
  --muted: #c7c9d1;
  --brand: #7c5cff;
  --brand-2: #26e0a0;
  --card: #151724;
  --border: #23253a;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --maxw: 1100px;
}
[data-theme="light"] {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #0f1020;
  --muted: #5a5f78;
  --brand: #5a46ff;
  --brand-2: #00b589;
  --card: #ffffff;
  --border: #e9eaf2;
  --shadow: 0 10px 30px rgba(10, 16, 40, 0.06);
}

/* === Base === */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu,
    Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: 0.2px;
}
a {
  color: inherit;
  text-decoration: none;
}
.container {
  width: min(100% - 2rem, var(--maxw));
  margin-inline: auto;
}

/* === Nav === */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 0;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.4px;
}
.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--brand) 30%, transparent);
}
.nav a {
  opacity: 0.95;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.nav a:hover {
  opacity: 1;
  transform: translateY(-1px);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  font-weight: 700;
  box-shadow: var(--shadow);
  border: 0;
  cursor: pointer;
}
.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
.btn:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--brand) 40%, transparent);
  outline-offset: 2px;
}
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
}
.nav a[aria-current="page"] {
  opacity: 1;
  text-decoration: underline;
}

/* Mobile menu */
.nav-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.45rem 0.6rem;
  cursor: pointer;
}
.menu-toggle:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--brand) 40%, transparent);
  outline-offset: 2px;
}
@media (max-width: 800px) {
  .nav-actions > .btn,
  .nav-actions > .btn.secondary,
  .nav-actions > .theme-toggle {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
}
.mobile-menu {
  position: fixed;
  inset: 0;
  background: color-mix(in oklab, var(--bg) 92%, black 8%);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  padding: 1rem;
  z-index: 60;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.mobile-menu .sheet {
  margin: auto;
  width: min(92vw, 560px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 1rem;
  transform: translateY(12px) scale(0.98);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.mobile-menu.open .sheet {
  transform: none;
  opacity: 1;
}
.mobile-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.mobile-links a {
  display: block;
  padding: 0.6rem 0;
  font-weight: 700;
  text-decoration: underline;
  color: color-mix(in oklab, var(--brand) 65%, var(--text));
}
.mobile-links a:hover {
  text-decoration: none;
}
.mobile-menu .theme-toggle {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  border: 0;
}
#closeMenu {
  margin-top: 0.8rem;
}

/* === Hero === */
.hero-wrap {
  position: relative;
  overflow: clip;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
      1200px 900px at 85% -10%,
      color-mix(in oklab, var(--brand) 25%, transparent),
      transparent
    ),
    radial-gradient(
      900px 650px at -10% 20%,
      color-mix(in oklab, var(--brand-2) 20%, transparent),
      transparent
    );
}
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1.2rem, 4vw, 2rem);
  padding: clamp(2.2rem, 6vw, 5rem) 0;
  align-items: center;
}
@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .cta {
    justify-content: center;
  }
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
}
.kicker .pulse {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--brand-2);
  box-shadow: 0 0 0 0 rgba(38, 224, 160, 0.7);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(38, 224, 160, 0.6);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(38, 224, 160, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(38, 224, 160, 0);
  }
}
h1 {
  margin: 0.6rem 0 1rem;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: 0.3px;
}
.sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 60ch;
  margin-inline: auto;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

/* === Profile === */
.profile {
  display: grid;
  place-items: center;
}
.avatar-wrap {
  position: relative;
  width: clamp(180px, 38vw, 260px);
  aspect-ratio: 1/1;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--card) 88%, transparent),
    color-mix(in oklab, var(--surface) 88%, transparent)
  );
  box-shadow: var(--shadow);
  padding: 0.8rem;
}
.avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  display: block;
}
.ring {
  position: absolute;
  inset: -4px;
  border-radius: 28px;
  background: conic-gradient(
    from 180deg at 50% 50%,
    var(--brand),
    var(--brand-2),
    var(--brand)
  );
  filter: blur(14px);
  opacity: 0.35;
  z-index: -1;
}

/* === Sections === */
section {
  padding: clamp(2rem, 5vw, 4rem) 0;
}
section header {
  margin-bottom: 1.2rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
section h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  letter-spacing: 0.3px;
}
section .muted {
  color: var(--muted);
  font-size: 0.95rem;
}
.section-alt {
  position: relative;
  isolation: isolate;
}
.section-alt::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
      800px 500px at 10% 10%,
      color-mix(in oklab, var(--brand) 18%, transparent),
      transparent
    ),
    radial-gradient(
      700px 480px at 90% 20%,
      color-mix(in oklab, var(--brand-2) 14%, transparent),
      transparent
    );
  opacity: 0.4;
  top: 0;
  bottom: 0;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  width: 100vw;
}
[data-theme="light"] .section-alt::before {
  opacity: 0.22;
}

/* === Cards === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}
.card {
  grid-column: span 12;
  background: radial-gradient(
      200% 100% at 0% 0%,
      color-mix(in oklab, var(--brand) 8%, transparent),
      transparent
    ),
    radial-gradient(
      190% 100% at 100% 0%,
      color-mix(in oklab, var(--brand-2) 6%, transparent),
      transparent
    ),
    linear-gradient(
      180deg,
      color-mix(in oklab, var(--card) 90%, transparent),
      color-mix(in oklab, var(--surface) 88%, transparent)
    );
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
  border-color: color-mix(in oklab, var(--brand) 30%, var(--border));
}
.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  letter-spacing: 0.2px;
}
.card p {
  margin: 0;
  color: var(--muted);
}
.tag {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: #fff;
  border: 0;
  box-shadow: var(--shadow);
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.grid-6 {
  grid-column: span 6;
}
@media (max-width: 900px) {
  .grid-6 {
    grid-column: span 12;
  }
}
.stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem 1rem;
  margin-top: 0.7rem;
  font-size: 0.92rem;
}
.stack b {
  font-weight: 700;
}
@media (max-width: 600px) {
  .stack {
    grid-template-columns: 1fr;
  }
}

/* === Timeline === */
.timeline {
  position: relative;
  margin-left: 0.6rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--brand), var(--brand-2));
  opacity: 0.45;
}
.t-item {
  position: relative;
  padding-left: 2rem;
  margin: 1.1rem 0;
}
.t-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--brand) 65%, var(--surface));
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--brand) 20%, transparent);
}
.t-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

/* === Footer === */
footer {
  padding: 3rem 0 4rem;
  color: var(--muted);
  text-align: center;
}

/* === Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* === A11y === */
.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;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 1000;
  width: auto;
  height: auto;
}

/* === Case studies === */
.cs {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
}
@media (max-width: 900px) {
  .cs {
    grid-template-columns: 1fr;
  }
}
.cs .meta {
  display: grid;
  gap: 0.6rem;
  align-content: start;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.chip {
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--brand-2) 18%, transparent);
  font-size: 0.85rem;
}
.cs h4 {
  margin: 0.4rem 0 0.2rem;
  font-size: 0.95rem;
  color: var(--muted);
}

/* === Filters === */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pill {
  appearance: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease,
    color 0.2s ease;
}
.pill:hover {
  transform: translateY(-1px);
}
.pill[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  border: 0;
  box-shadow: var(--shadow);
}
.filter-status {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* === Metrics === */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}
.metric {
  grid-column: span 3;
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--card) 88%, transparent),
    color-mix(in oklab, var(--surface) 88%, transparent)
  );
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}
.metric .icon {
  font-size: 1.2rem;
}
.metric h3 {
  margin: 0.3rem 0 0.25rem;
  font-size: 1.05rem;
}
.metric p {
  margin: 0;
  color: var(--muted);
}
@media (max-width: 900px) {
  .metric {
    grid-column: span 6;
  }
}
@media (max-width: 600px) {
  .metric {
    grid-column: span 12;
  }
}

/* === Principles === */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}
.principle {
  grid-column: span 6;
}
@media (max-width: 900px) {
  .principle {
    grid-column: span 12;
  }
}

/* === Testimonials === */
.testi-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  display: inline-block;
  margin-right: 0.6rem;
}
.quote {
  font-size: 1rem;
  line-height: 1.5;
}
/* === Skills: robust mobile layout + clear rating (v3) === */
/* Grid: always 2 cols on mobile; 3 cols >=900px; 4 cols >=1200px */
.skills-meters {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 900px) {
  .skills-meters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 1200px) {
  .skills-meters {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* Chip reserves space for dots and prevents overlap */
.tag.meter {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.65rem;
  width: 100%;
  --dot: 12px;
  --meter-w: calc(var(--dot) * 5);
  padding: 0.65rem 0.95rem;
  padding-right: calc(1.1rem + var(--meter-w));
  min-height: calc(var(--dot) + 1.25rem);
  line-height: 1.28;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  box-shadow: var(--shadow);
}
@media (max-width: 480px) {
  .tag.meter {
    --dot: 10px;
  }
}
@media (max-width: 360px) {
  .tag.meter {
    --dot: 8px;
  }
}
@media (max-width: 330px) {
  .tag.meter {
    --dot: 7px;
    padding-right: calc(0.95rem + var(--meter-w));
  }
}
.tag.meter b {
  font-weight: 800;
  letter-spacing: 0.2px;
  word-break: break-word;
}
.tag.meter em {
  display: none;
}

/* Five solid dots; left-to-right fill driven by --val */
.tag.meter::after {
  content: "";
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: var(--meter-w);
  height: var(--dot);
  border-radius: 999px;
  opacity: 0.85;
  background: radial-gradient(
      circle,
      rgba(255, 255, 255, 0.28) 62%,
      transparent 64%
    )
    left center/var(--dot) var(--dot) repeat-x;
}
.tag.meter::before {
  content: "";
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: var(--meter-w);
  height: var(--dot);
  border-radius: 999px;
  background: radial-gradient(circle, #fff 64%, transparent 66%) left
    center/var(--dot) var(--dot) repeat-x;
  -webkit-mask: linear-gradient(90deg, #000 var(--val, 0%), transparent 0);
  mask: linear-gradient(90deg, #000 var(--val, 0%), transparent 0);
}

/* Hide legacy bars for single UI */
#skills .skillbars {
  display: none !important;
}

/* === Accordions: only show on mobile (<=900px) === */
.acc-trigger {
  display: none;
}
.accordion-enabled .acc-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  width: 100%;
  background: transparent;
  color: inherit;
  border: 0;
  font: inherit;
  padding: 0;
  cursor: pointer;
  margin: -0.2rem 0 0.6rem;
}
.accordion-enabled .acc-trigger span {
  font-weight: 800;
  letter-spacing: 0.2px;
  text-align: left;
}
/* Accordion trigger spacing should only appear when open */
.accordion-enabled .acc-trigger {
  margin: 0;
}
.accordion-enabled .card[data-open="true"] .acc-trigger {
  margin: 0 0 0.6rem;
}

/* Small polish: add subtle divider when open so the body feels attached */
.accordion-enabled .card[data-open="true"] .acc-trigger {
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.25rem;
}

.accordion-enabled .acc-trigger .chev {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  flex: 0 0 auto;
  opacity: 0.9;
  transition: transform 0.2s ease;
}
.accordion-enabled .card[data-open="true"] .acc-trigger .chev {
  transform: rotate(180deg);
}
.accordion-enabled #projects .card .acc-body,
.accordion-enabled #case-studies .card .acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}
.accordion-enabled #projects .card[data-open="true"] .acc-body,
.accordion-enabled #case-studies .card[data-open="true"] .acc-body {
  max-height: 1200px;
}
/* Hide the inner heading inside case studies when accordion is active to avoid duplicate titles */
.accordion-enabled #case-studies .cs h3 {
  display: none;
}
/* Force the hamburger to show on mobile and hide on desktop */
@media (max-width: 800px) {
  .menu-toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    color: var(--text);
    border-color: var(--border);
  }
  .nav-actions > .btn,
  .nav-actions > .btn.secondary,
  .nav-actions > .theme-toggle {
    display: none !important;
  }
}
@media (min-width: 801px) {
  .menu-toggle {
    display: none !important;
  }
}

/* Hamburger bars + animated X */
.menu-toggle {
  cursor: pointer;
}
.hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 22px;
  height: 18px;
}
.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.menu-toggle[aria-expanded="true"] .hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .hamburger span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Tap target polish */
.menu-toggle {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: transparent;
}
.menu-toggle:hover,
.menu-toggle:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--brand) 40%, transparent);
  outline-offset: 2px;
}