/* ============================================================
   jooexploit — main.css  v2.1
   Design system per DESIGN.md
   Dark-first · 8pt grid · border-based · calm motion
   Premium: WebGL hero, GSAP reveals, orbital skills
   ============================================================ */

/* ============ Design Tokens ============ */
:root {
  --bg: #09090B;
  --surface: #111113;
  --card: #18181B;
  --card-hover: #1C1C1F;
  --primary: #2563EB;
  --primary-h: #1D4ED8;
  --primary-dim: rgba(37, 99, 235, .12);
  --success: #16A34A;
  --text: #FAFAFA;
  --text-2: #A1A1AA;
  --text-3: #84848E;
  /* AA-compliant tertiary text (>=4.5:1 on bg and card) */
  --border: #27272A;
  --divider: #3F3F46;

  --font: "Geist", "Inter", system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, monospace;

  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --container: 1280px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-in: cubic-bezier(.55, 0, 1, .45);
  --t-xs: 80ms;
  --t-sm: 150ms;
  --t-md: 240ms;
  --t-lg: 350ms;
  --t-xl: 500ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Lenis drives scrolling when active — avoid double smoothing */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle grain texture — allowed per DESIGN.md */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: .025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection {
  background: var(--primary);
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ============ Typography ============ */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.1;
}

h4 {
  font-size: 1.125rem;
  margin-bottom: 16px;
  color: var(--text);
}

p {
  line-height: 1.65;
}

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.mono {
  font-family: var(--mono);
  font-size: .8125rem;
  letter-spacing: .02em;
}

.accent {
  color: var(--primary);
}

.accent-em {
  color: var(--primary);
  font-style: normal;
}

/* ============ Layout ============ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: fixed;
  top: -56px;
  left: 16px;
  background: var(--primary);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 8px;
  z-index: 10001;
  font-weight: 500;
  transition: top var(--t-sm) var(--ease);
}

.skip-link:focus {
  top: 16px;
}

/* ============ Icons ============ */
.icon {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.icon--xl {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

/* ============ Preloader ============ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 600ms var(--ease), visibility 600ms;
}

.loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.loader__mark {
  display: flex;
  align-items: center;
  justify-content: center;
}

.loader__logo-img {
  height: 52px;
  width: auto;
  display: block;
  animation: logoPulse 2s infinite ease-in-out;
}

@keyframes logoPulse {
  0%, 100% {
    opacity: 0.85;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.02);
  }
}

.loader__bar {
  width: 180px;
  height: 1px;
  background: var(--border);
  overflow: hidden;
}

.loader__bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--primary);
  transition: width 180ms linear;
}

.loader__caption {
  color: var(--text-2);
}

/* ============ Scroll progress ============ */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 999;
  pointer-events: none;
}

.progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary) 0%, color-mix(in srgb, var(--primary) 60%, transparent) 100%);
}

/* ============ Navigation ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  transition: background var(--t-lg) var(--ease),
    border-color var(--t-lg) var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled,
.nav.is-open {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  backdrop-filter: blur(16px) saturate(1.5);
  border-bottom-color: var(--border);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__logo {
  display: flex;
  align-items: center;
}

.nav__logo-img {
  height: 40px;
  width: auto;
  display: block;
  transition: transform var(--t-sm) var(--ease);
}

.nav__logo:hover .nav__logo-img {
  transform: scale(1.02);
}

.nav__links {
  display: flex;
  gap: 4px;
}

.nav__links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .875rem;
  color: var(--text-2);
  transition: color var(--t-sm) var(--ease), background var(--t-sm) var(--ease);
}

.nav__links a:hover {
  color: var(--text);
  background: var(--card);
}

.nav__links a.is-active {
  color: var(--text);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: color var(--t-sm) var(--ease), border-color var(--t-sm) var(--ease), background var(--t-sm) var(--ease);
}

.nav__toggle:hover {
  color: var(--text);
  border-color: var(--divider);
  background: var(--card);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background var(--t-sm) var(--ease),
    border-color var(--t-sm) var(--ease),
    color var(--t-sm) var(--ease),
    transform var(--t-md) var(--ease),
    box-shadow var(--t-md) var(--ease);
  will-change: transform;
  position: relative;
}

.btn--primary {
  background: var(--primary);
  color: var(--text);
}

.btn--primary:hover {
  background: var(--primary-h);
  box-shadow: 0 0 0 3px var(--primary-dim);
}

.btn--ghost {
  border-color: var(--border);
  color: var(--text-2);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--divider);
  color: var(--text);
  background: var(--card);
}

.btn--sm {
  padding: 8px 16px;
  font-size: .875rem;
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.0625rem;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  --hero-x: 72%;
  --hero-y: 42%;
  --hero-grid-x: 0px;
  --hero-grid-y: 0px;
  background:
    radial-gradient(circle at var(--hero-x) var(--hero-y), rgba(37, 99, 235, .16), transparent 30%),
    linear-gradient(90deg, rgba(9, 9, 11, .36) 0%, var(--bg) 58%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: -64px;
  z-index: 0;
  pointer-events: none;
  opacity: .28;
  background-image:
    linear-gradient(rgba(63, 63, 70, .42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 63, 70, .42) 1px, transparent 1px);
  background-size: 64px 64px;
  transform: translate3d(var(--hero-grid-x), var(--hero-grid-y), 0);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 78% 48%, rgba(37, 99, 235, .12), transparent 24%),
    linear-gradient(90deg, rgba(9, 9, 11, .12) 0%, rgba(9, 9, 11, .64) 48%, var(--bg) 100%);
}

.hero__scene {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1;
  pointer-events: auto;
  touch-action: none;
  margin: 0 auto;
}

.hero__three {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

.hero__scene.is-dragging .hero__three {
  cursor: grabbing;
}

.hero__scene-fallback {
  position: absolute;
  inset: 18%;
  opacity: .42;
  border: 1px solid color-mix(in srgb, var(--primary) 48%, var(--border));
  transform: rotateX(58deg) rotateZ(45deg);
  transform-style: preserve-3d;
}

.hero__scene-fallback::before,
.hero__scene-fallback::after {
  content: "";
  position: absolute;
  inset: 16%;
  border: 1px solid color-mix(in srgb, var(--primary) 36%, var(--border));
}

.hero__scene-fallback::after {
  inset: 32%;
  background: color-mix(in srgb, var(--primary) 14%, transparent);
}

.hero__scene.is-ready .hero__scene-fallback {
  opacity: 0;
}

.hero__scene.is-fallback .hero__scene-fallback {
  opacity: .42;
}

.hero__scene.is-fallback .hero__three {
  display: none;
}

.hero__scene.is-ready .hero__three {
  opacity: 1;
}

.hero__scene .hero__three {
  opacity: 0;
}

.hero__inner>* {
  position: relative;
  z-index: 2;
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 18px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
  opacity: 0;
}

.eyebrow.is-visible {
  opacity: 1;
  transition: opacity var(--t-xl) var(--ease);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2.4s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: .4;
    transform: scale(.85);
  }
}

.hero__title {
  font-size: clamp(2.75rem, 7.5vw, 6rem);
  letter-spacing: -.04em;
  margin-bottom: 24px;
  max-width: 14ch;
  line-height: 1.05;
}

.hero__line {
  display: block;
  overflow: hidden;
}

.hero__chars {
  display: block;
  transform: translateY(105%);
}

.hero__chars.is-visible {
  transform: translateY(0);
}

/* GSAP-ready character spans */
.hero__char {
  display: inline-block;
  will-change: transform, opacity;
}

.hero__sub {
  font-size: 1.125rem;
  color: var(--text-2);
  max-width: 52ch;
  margin-bottom: 32px;
  line-height: 1.7;
  opacity: 0;
  transform: translateY(16px);
}

.hero__sub.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--t-xl) var(--ease) .2s, transform var(--t-xl) var(--ease) .2s;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
  opacity: 0;
  transform: translateY(12px);
}

.hero__cta.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--t-xl) var(--ease) .35s, transform var(--t-xl) var(--ease) .35s;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  border-top: 1px solid var(--border);
  padding-top: 32px;
  max-width: 600px;
  opacity: 0;
}

.hero__stats.is-visible {
  opacity: 1;
  transition: opacity var(--t-xl) var(--ease) .5s;
}

.hero__stats div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero__stats dt {
  font-size: .8125rem;
  color: var(--text-2);
  font-family: var(--mono);
}

.hero__stats dd {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--text-3);
  transition: color var(--t-sm) var(--ease);
}

.hero__scroll:hover {
  color: var(--text-2);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--primary);
  animation: scrollhint 2.2s var(--ease) infinite;
}

@keyframes scrollhint {
  0% {
    transform: translateY(-100%);
  }

  70%, 100% {
    transform: translateY(100%);
  }
}

/* ============ Marquee ============ */
.marquee {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  padding: 18px 0;
  background: var(--surface);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.marquee__track {
  display: flex;
  gap: 28px;
  width: max-content;
  animation: marquee 42s linear infinite;
}

.marquee__track span {
  font-family: var(--mono);
  font-size: .8125rem;
  color: var(--text-2);
  white-space: nowrap;
}

.marquee__track i {
  color: var(--border);
  font-style: normal;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ============ Sections ============ */
.section {
  padding: 160px 0;
}

.section--surface {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

#work {
  position: relative;
  isolation: isolate;
  background: 
    radial-gradient(circle at 15% 20%, rgba(37, 99, 235, 0.035), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(37, 99, 235, 0.025), transparent 45%),
    var(--bg);
}

#work::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.18;
  background-image: radial-gradient(var(--border) 1px, transparent 1px);
  background-size: 24px 24px;
}

.section__index {
  font-family: var(--mono);
  font-size: .8125rem;
  color: var(--primary);
  margin-bottom: 16px;
  letter-spacing: .04em;
}

.section__title {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  margin-bottom: 72px;
  letter-spacing: -.03em;
}

/* ============ Reveal on scroll ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
  transition-delay: var(--d, 0s);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ============ Cards ============ */
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color var(--t-md) var(--ease),
    transform var(--t-md) var(--ease),
    background var(--t-md) var(--ease);
}

.card:hover {
  border-color: var(--divider);
  transform: translateY(-3px);
  background: var(--card-hover);
}

/* Mouse-tracked border light */
.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 50%),
      color-mix(in srgb, var(--primary) 40%, transparent), transparent 65%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t-md) var(--ease);
  pointer-events: none;
}

.card:hover::before {
  opacity: 1;
}

/* Chips */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chips li, .chips .chip {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
  transition: border-color var(--t-sm) var(--ease), color var(--t-sm) var(--ease);
}

.chips li:hover {
  border-color: var(--divider);
  color: var(--text);
}

.chips--large li {
  font-size: .8125rem;
  padding: 5px 14px;
}

/* ============ About ============ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about__story {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about__lead {
  font-size: 1.3rem;
  line-height: 1.6;
  color: var(--text-2);
}

.about__lead strong {
  color: var(--text);
  font-weight: 600;
}

.about__body {
  font-size: 1rem;
  color: var(--text-2);
}

.about__body strong {
  color: var(--text);
  font-weight: 600;
}

.about__pillars {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 8px;
}

.pillar {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: background var(--t-sm) var(--ease);
}

.pillar:last-child {
  border-bottom: 0;
}

.pillar:hover {
  background: var(--card);
}

.pillar__num {
  display: block;
  margin-bottom: 6px;
}

.pillar h3 {
  font-size: 1rem;
  margin-bottom: 4px;
  font-weight: 600;
}

.pillar p {
  font-size: .875rem;
  color: var(--text-2);
}

/* Discipline Arc */
.arc {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.arc__label {
  color: var(--text-3);
  margin-bottom: 28px;
  display: block;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.arc__steps {
  display: flex;
  flex-direction: column;
}

.arc__step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
  position: relative;
}

.arc__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--divider);
  flex-shrink: 0;
  margin-top: 5px;
  transition: border-color var(--t-md) var(--ease), background var(--t-md) var(--ease);
}

.arc__step.is-visible {
  opacity: 1;
  transform: none;
}

.arc__step:hover .arc__dot,
.arc__step--current .arc__dot {
  border-color: var(--primary);
  background: var(--primary);
}

.arc__content {
  padding-bottom: 2px;
}

.arc__num {
  display: block;
  margin-bottom: 4px;
  color: var(--text-3);
}

.arc__content h3 {
  font-size: .9375rem;
  margin-bottom: 4px;
}

.arc__content p {
  font-size: .8125rem;
  color: var(--text-2);
  line-height: 1.5;
}

.arc__now {
  font-size: .75rem;
  font-weight: 400;
}

.arc__connector {
  width: 1px;
  height: 20px;
  margin: 4px 0 4px 4px;
  background: var(--border);
}

.arc__connector--active {
  background: var(--primary);
  opacity: .4;
}

/* ============ Timeline ============ */
.timeline {
  position: relative;
  max-width: 740px;
  padding-left: 52px;
}

.timeline__rail {
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  /* centered on dot centers */
  width: 1px;
  background: var(--border);
}

.timeline__rail span {
  display: block;
  width: 100%;
  height: 0;
  background: linear-gradient(to bottom, var(--primary), color-mix(in srgb, var(--primary) 40%, transparent));
  transition: height .6s var(--ease);
}

.tl-item {
  position: relative;
  padding-bottom: 72px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item__dot {
  position: absolute;
  left: -47px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--divider);
  transition: border-color var(--t-md) var(--ease), background var(--t-md) var(--ease), transform var(--t-md) var(--ease);
}

.tl-item.is-visible .tl-item__dot {
  border-color: var(--primary);
  background: var(--primary);
  transform: scale(1.2);
}

.tl-item--now .tl-item__dot {
  background: var(--primary);
  border-color: var(--primary);
  transform: scale(1.3);
}

.tl-item__date {
  color: var(--text-2);
  margin-bottom: 10px;
}

.tl-item h3 {
  font-size: 1.375rem;
  margin-bottom: 12px;
}

.tl-item p {
  color: var(--text-2);
  max-width: 58ch;
  margin-bottom: 20px;
}

.tl-item .chips {
  margin-top: 4px;
}

/* ============ Project Cards ============ */
.project-card__mobile-header {
  display: none;
}
.project-card__collapsible {
  display: block;
  height: auto;
  overflow: visible;
}

.project-card {
  --card-radius: 24px;
  background: var(--card);
  border: 1px solid rgba(39, 39, 42, 0.4);
  border-radius: var(--card-radius);
  overflow: hidden;
  position: relative;
  transition: border-color var(--t-lg) var(--ease),
              transform var(--t-lg) var(--ease),
              box-shadow var(--t-lg) var(--ease);
  will-change: transform;
  z-index: 1;
}

/* Vertical rhythm between stacked case-study cards */
.container>.project-card+.project-card {
  margin-top: 32px;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%),
      color-mix(in srgb, var(--primary) 35%, transparent), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-md) var(--ease);
  z-index: 3;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--t-lg) var(--ease);
  z-index: 0;
  pointer-events: none;
}

#proj-shoky::after {
  background: radial-gradient(circle at 100% 100%, rgba(37, 99, 235, 0.04), transparent 60%);
}

#proj-whatsapp::after {
  background: radial-gradient(circle at 100% 100%, rgba(22, 163, 74, 0.04), transparent 60%);
}

#proj-chrome::after {
  background: radial-gradient(circle at 100% 100%, rgba(168, 85, 247, 0.04), transparent 60%);
}

#proj-dashboard::after {
  background: radial-gradient(circle at 100% 100%, rgba(6, 182, 212, 0.04), transparent 60%);
}

#proj-devops-labs::after {
  background: radial-gradient(circle at 100% 100%, rgba(161, 161, 170, 0.04), transparent 60%);
}

#proj-rashed::after {
  background: radial-gradient(circle at 100% 100%, rgba(20, 184, 166, 0.04), transparent 60%);
}

.project-card:hover::after {
  opacity: 1;
}

.project-card:hover::before {
  opacity: 1;
}

.project-card:hover {
  border-color: color-mix(in srgb, var(--primary) 25%, var(--divider));
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

.project-card__header {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  grid-template-areas: "info visual";
  gap: 48px;
  align-items: center;
  padding: 48px;
  position: relative;
  z-index: 2;
}

#proj-whatsapp .project-card__header {
  grid-template-columns: 0.9fr 1.25fr;
  grid-template-areas: "visual info";
}

.project-card__info {
  grid-area: info;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.project-tag-wrap {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 4px;
}

.badge--featured {
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.25);
  margin-right: 8px;
}

.project-card__info .tag {
  display: block;
  color: var(--text-3);
  font-size: .8rem;
  letter-spacing: .04em;
}

.project-card__info h3 {
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  margin-bottom: 14px;
  letter-spacing: -.03em;
  font-weight: 700;
  color: var(--text);
}

.project-card__brief {
  color: var(--text-2);
  max-width: 44ch;
  font-size: 0.9375rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

/* Metadata Display */
.project-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  padding: 14px 0;
  width: 100%;
  max-width: 440px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-item span:first-child {
  font-size: 0.65rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.meta-item span:last-child {
  font-size: 0.85rem;
  color: var(--text-2);
  font-weight: 500;
}

/* Glass chips */
.chips--glass {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 24px;
}

.chips--glass li {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 100px;
  padding: 4px 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--t-sm) var(--ease),
              border-color var(--t-sm) var(--ease),
              color var(--t-sm) var(--ease);
}

.chips--glass li:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

.chip-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  display: inline-block;
}

/* Device Preview Mockups */
.project-card__visual {
  grid-area: visual;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  position: relative;
}

/* Browser mockups */
.browser-frame {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 480px;
  transition: border-color var(--t-md) var(--ease);
}

.project-card:hover .browser-frame {
  border-color: rgba(255, 255, 255, 0.1);
}

.browser-header {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: rgba(24, 24, 27, 0.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  gap: 12px;
}

.browser-dots {
  display: flex;
  gap: 5px;
}

.browser-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}

.browser-address {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-3);
  background: rgba(9, 9, 11, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.04);
  padding: 1px 10px;
  border-radius: 4px;
  max-width: 180px;
  width: 100%;
  text-align: center;
  margin: 0 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browser-body {
  width: 100%;
  max-height: 240px;
  overflow: hidden;
}

.browser-body img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: top;
  transition: transform var(--t-lg) var(--ease);
}

/* Mobile mockups */
.mobile-frame {
  border: 7px solid rgba(39, 39, 42, 0.8);
  border-radius: 28px;
  background: #000;
  width: 100%;
  max-width: 180px;
  height: auto;
  aspect-ratio: 9 / 18.5;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
  margin: 0 auto;
  transition: border-color var(--t-md) var(--ease);
}

.project-card:hover .mobile-frame {
  border-color: rgba(63, 63, 70, 0.9);
}

.mobile-speaker {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background: var(--divider);
  border-radius: 2px;
  z-index: 2;
}

.mobile-camera {
  position: absolute;
  top: 5px;
  left: calc(50% + 22px);
  width: 5px;
  height: 5px;
  background: var(--divider);
  border-radius: 50%;
  z-index: 2;
}

.mobile-screen {
  width: 100%;
  height: 100%;
}

.mobile-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
  transition: transform var(--t-lg) var(--ease);
}

/* Terminal mockups */
.terminal-frame {
  background: rgba(9, 9, 11, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  width: 100%;
  transition: border-color var(--t-md) var(--ease);
}

.project-card:hover .terminal-frame {
  border-color: rgba(255, 255, 255, 0.1);
}

.terminal-header {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: rgba(24, 24, 27, 0.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.terminal-dots {
  display: flex;
  gap: 5px;
}

.terminal-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border);
}

.terminal-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-3);
  margin-left: 12px;
}

.terminal-body {
  width: 100%;
  max-height: 160px;
  overflow: hidden;
}

.terminal-body img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: top;
  transition: transform var(--t-lg) var(--ease);
}

/* Custom interactive animations */
.project-card:hover img {
  transform: scale(1.025);
}

.project-expand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-color: rgba(255, 255, 255, 0.08) !important;
  background: transparent !important;
  color: var(--text-2) !important;
  transition: all var(--t-md) var(--ease);
}

.project-expand:hover {
  border-color: var(--primary) !important;
  color: var(--text) !important;
  background: rgba(37, 99, 235, 0.04) !important;
}

.project-expand__icon {
  transition: transform 300ms cubic-bezier(.22, 1, .36, 1) !important;
}

.project-expand:hover .project-expand__icon {
  transform: translateX(4px);
}

.project-expand[aria-expanded="true"] .project-expand__icon {
  transform: rotate(90deg) !important;
}

/* Project detail (accordion) */
.project-detail {
  border-top: 1px solid var(--border);
  padding: 0;
  overflow: hidden;
}

.project-detail[hidden] {
  display: none;
}

.project-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.project-tabs::-webkit-scrollbar {
  display: none;
}

.project-tab {
  padding: 16px 20px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  transition: color var(--t-sm) var(--ease), border-color var(--t-sm) var(--ease);
}

.project-tab:hover {
  color: var(--text);
}

.project-tab.is-active {
  color: var(--text);
  border-bottom-color: var(--primary);
}

.project-panel {
  padding: 36px 40px;
  display: none;
}

.project-panel.is-active {
  display: block;
}

.project-panel[hidden] {
  display: none;
}

.project-panel h4 {
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 14px;
}

.project-panel p {
  color: var(--text-2);
  max-width: 62ch;
  line-height: 1.7;
}

.project-panel .chips {
  margin-bottom: 20px;
}

/* Small project grid — uniform cards, consistent radius at every breakpoint */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.project-card--sm {
  display: flex;
  flex-direction: column;
  height: 100%;
  --card-radius: 20px;
  border-radius: var(--card-radius);
  background: var(--card);
  border: 1px solid rgba(39, 39, 42, 0.4);
  overflow: hidden;
  transition: border-color var(--t-lg) var(--ease),
              transform var(--t-lg) var(--ease),
              box-shadow var(--t-lg) var(--ease);
  padding: 0 !important;
}

.project-card--sm:hover {
  border-color: color-mix(in srgb, var(--primary) 20%, var(--divider));
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}

.project-card--sm .project-card__visual {
  padding: 24px 24px 0 24px;
  background: rgba(0, 0, 0, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  height: 190px;
  overflow: hidden;
}

.project-card--sm .project-card__content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.project-card--sm h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.project-card--sm .tag {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--mono);
}

.project-card--sm p.project-card__brief {
  font-size: .875rem;
  color: var(--text-2);
  margin-bottom: 16px;
  line-height: 1.6;
  flex: 1;
  max-width: 100%;
}

.project-card--sm .project-metadata {
  margin: 8px 0 12px;
  padding: 8px 0;
  gap: 12px 20px;
}

.project-card--sm .chips--glass {
  margin: 8px 0 0 0;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary);
  margin-top: 20px;
  transition: color var(--t-sm) var(--ease);
}

.btn-text svg {
  width: 14px;
  height: 14px;
  transition: transform var(--t-sm) var(--ease);
}

.project-card--sm:hover .btn-text {
  color: var(--primary-h);
}

.project-card--sm:hover .btn-text svg {
  transform: translateX(4px);
}

#proj-dashboard {
  background: linear-gradient(135deg, var(--card) 0%, rgba(6, 182, 212, 0.015) 100%);
}

#proj-devops-labs {
  background: linear-gradient(135deg, var(--card) 0%, rgba(161, 161, 170, 0.015) 100%);
}

#proj-rashed {
  background: linear-gradient(135deg, var(--card) 0%, rgba(20, 184, 166, 0.015) 100%);
}

/* ============ Skills ============ */
.skills-stage {
  position: relative;
  width: 100%;
  max-width: 700px;
  margin: 0 auto 72px;
}

.skills-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.skills-stage.is-panning .skills-svg {
  cursor: grabbing;
}

/* SVG skill nodes */
.skill-line {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: none;
  opacity: .4;
  will-change: stroke, stroke-width, opacity;
}

.skill-circle {
  fill: url(#node-glass);
  stroke: var(--border);
  stroke-width: 1.5;
  transition: stroke var(--t-sm) var(--ease), stroke-width var(--t-sm) var(--ease);
}

.skill-group {
  cursor: grab;
  outline: none;
}

.skill-group.is-dragging {
  cursor: grabbing;
}

.skill-circle:hover,
.skill-group:hover .skill-circle,
.skill-group:focus-visible .skill-circle,
.skill-group.is-dragging .skill-circle {
  stroke: var(--primary);
  stroke-width: 2;
}

/* Hub Styles */
.hub-circle {
  transition: stroke var(--t-sm) var(--ease), stroke-width var(--t-sm) var(--ease);
}

#skill-hub {
  cursor: grab;
  outline: none;
}

#skill-hub.is-dragging {
  cursor: grabbing;
}

#skill-hub:hover .hub-circle,
#skill-hub:focus-visible .hub-circle,
#skill-hub.is-dragging .hub-circle {
  stroke: var(--primary);
  stroke-width: 2;
}

.hub-ring {
  animation: hubPulse 4s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

@keyframes hubPulse {
  0%, 100% {
    opacity: .4;
    transform: scale(1);
  }

  50% {
    opacity: .12;
    transform: scale(1.06);
  }
}

.skill-label {
  fill: var(--text-2);
  font-family: "Geist Mono", monospace;
  font-size: 10px;
  font-weight: 500;
  pointer-events: none;
  transition: fill var(--t-sm) var(--ease);
  text-anchor: middle;
}

.skill-group:hover .skill-label,
.skill-group:focus-visible .skill-label,
.skill-group.is-dragging .skill-label {
  fill: var(--text);
}

.hub-label-main {
  pointer-events: none;
}

/* Skill tooltip */
.skill-tooltip {
  position: absolute;
  background: rgba(17, 17, 19, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: .8125rem;
  color: var(--text);
  pointer-events: none;
  z-index: 10;
  min-width: 180px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: translateY(8px) scale(0.95);
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
  display: block;
  /* Controlled via opacity & transform class toggle */
}

.skill-tooltip.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.skill-tooltip__name {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-family: "Geist Mono", monospace;
  font-weight: 600;
  font-size: 0.8125rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 6px;
}

.skill-tooltip__list {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.skill-tooltip__list li {
  color: var(--text-2);
  font-size: .75rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.skill-tooltip__list li::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--primary);
  opacity: 0.8;
}

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.skills-col h3 {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 20px;
  font-size: .8125rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.skills-col ul {
  display: flex;
  flex-direction: column;
}

.skills-col li {
  padding: 11px 0;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  font-size: .9375rem;
  transition: color var(--t-sm) var(--ease), padding-left var(--t-sm) var(--ease);
  cursor: default;
}

.skills-col li:last-child {
  border-bottom: 0;
}

.skills-col li:hover {
  color: var(--text);
  padding-left: 6px;
}

/* ============ Library (Coming Soon) ============ */
.library-soon {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.library-soon__glow {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(ellipse, color-mix(in srgb, var(--primary) 8%, transparent), transparent 70%);
  pointer-events: none;
}

.library-soon__inner {
  position: relative;
  padding: 80px;
}

.library-soon__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  background: var(--surface);
  margin-bottom: 32px;
}

.library-soon h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 24px;
  max-width: 20ch;
  letter-spacing: -.025em;
}

.library-soon__desc {
  color: var(--text-2);
  max-width: 58ch;
  margin-bottom: 56px;
  font-size: 1rem;
  line-height: 1.7;
}

.library-topics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 48px;
}

.library-topic {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: .875rem;
  color: var(--text-2);
  transition: border-color var(--t-sm) var(--ease), color var(--t-sm) var(--ease), background var(--t-sm) var(--ease);
}

.library-topic:hover {
  border-color: var(--divider);
  color: var(--text);
  background: var(--card);
}

.library-topic .icon {
  color: var(--primary);
  flex-shrink: 0;
}

.library-soon__note {
  color: var(--text-3);
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: block;
}

/* ============ Contact ============ */
.contact {
  padding: 200px 0;
  text-align: center;
}

.contact__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  letter-spacing: -.035em;
  margin-bottom: 24px;
  line-height: 1.05;
}

.contact__sub {
  color: var(--text-2);
  max-width: 50ch;
  margin-bottom: 52px;
  font-size: 1.0625rem;
  line-height: 1.65;
}

.contact__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.contact__social {
  display: flex;
  gap: 12px;
}

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer__logo-img {
  height: 38px;
  width: auto;
  display: block;
  opacity: 0.8;
  transition: opacity var(--t-sm) var(--ease), transform var(--t-sm) var(--ease);
}

.footer__logo-wrap:hover .footer__logo-img {
  opacity: 1;
  transform: scale(1.02);
}

.footer__note {
  font-size: .875rem;
  color: var(--text-3);
}

.footer__top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  transition: color var(--t-sm) var(--ease), border-color var(--t-sm) var(--ease),
    transform var(--t-md) var(--ease), background var(--t-sm) var(--ease);
}

.footer__top:hover {
  color: var(--text);
  border-color: var(--divider);
  background: var(--card);
  transform: translateY(-3px);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .section {
    padding: 112px 0;
  }

  /* Mobile Collapsible Card Layouts */
  .project-card__mobile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: transparent;
    cursor: pointer;
    border-bottom: 1px solid transparent;
    transition: border-color var(--t-md) var(--ease), background-color var(--t-md) var(--ease);
  }
  
  .project-card.is-card-expanded .project-card__mobile-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.01);
  }

  .project-card__mobile-title-wrap {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    pointer-events: none;
  }

  .project-card__mobile-title-wrap h3 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.02em;
  }

  .project-card__mobile-title-wrap .project-tag-wrap {
    margin-bottom: 0;
  }

  .project-card__toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: 9999px;
    white-space: nowrap;
    border: 1px solid var(--border);
    color: var(--text-2);
    background: transparent;
    transition: all var(--t-md) var(--ease);
  }

  .project-card__toggle:hover {
    border-color: var(--divider);
    color: var(--text);
  }

  .project-card__toggle .chevron {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
    transition: transform var(--t-md) var(--ease);
  }

  .project-card.is-card-expanded .project-card__toggle .chevron {
    transform: rotate(180deg);
  }

  .project-card__collapsible {
    height: 0;
    overflow: hidden;
    display: none;
  }

  .project-card.is-card-expanded .project-card__collapsible {
    display: block;
    height: auto;
  }

  /* Hide duplicate tags/titles inside details on mobile */
  .project-card__info .project-tag-wrap,
  .project-card__info h3 {
    display: none !important;
  }

  .project-card__header {
    grid-template-columns: 1fr;
    grid-template-areas: "visual" "info";
    gap: 32px;
    padding: 32px;
  }

  #proj-whatsapp .project-card__header {
    grid-template-columns: 1fr;
    grid-template-areas: "visual" "info";
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 140px;
    padding-bottom: 80px;
  }

  .hero__scene {
    position: absolute;
    top: 50%;
    right: -10%;
    transform: translateY(-50%);
    width: min(80vw, 420px);
    aspect-ratio: 1;
    opacity: .25;
    pointer-events: none;
    z-index: 1;
  }

  .hero__stats {
    gap: 32px;
  }

  .library-soon__inner {
    padding: 48px 32px;
  }

  .skills-stage {
    max-width: 100%;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Mobile navigation: dropdown panel under the fixed header */
  .nav__toggle {
    display: inline-flex;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 2px;
    padding: 12px 24px 20px;
    background: color-mix(in srgb, var(--bg) 94%, transparent);
    -webkit-backdrop-filter: blur(16px) saturate(1.5);
    backdrop-filter: blur(16px) saturate(1.5);
    border-bottom: 1px solid var(--border);
  }

  .nav.is-open .nav__links {
    display: flex;
  }

  .nav__links a {
    padding: 12px 14px;
    font-size: .9375rem;
  }
}

@media (max-width: 640px) {
  .contact {
    padding: 128px 0;
  }

  .hero__scroll {
    display: none;
  }

  .card {
    padding: 24px;
  }

  .project-card__header {
    padding: 24px;
    gap: 24px;
    --card-radius: 20px;
  }

  .project-tabs {
    padding: 0 24px;
  }

  .project-panel {
    padding: 28px 24px;
  }

  .project-card--sm {
    padding: 0 !important;
  }

  .project-card--sm .project-card__content {
    padding: 24px;
  }

  .project-card--sm .project-card__visual {
    padding: 16px 16px 0 16px;
    height: 170px;
  }

  .contact__social {
    flex-wrap: wrap;
    justify-content: center;
  }

  .library-topics {
    grid-template-columns: 1fr 1fr;
  }
}

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

  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  [data-reveal], .hero__chars, .hero__sub, .hero__cta, .hero__stats, .eyebrow, .arc__step {
    opacity: 1 !important;
    transform: none !important;
  }

  .marquee__track {
    animation: none;
  }

  .hero__scene {
    opacity: .22;
    pointer-events: none;
  }
}

/* ============ Custom Page Scrollbar ============ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border: 2px solid var(--bg);
  border-radius: 6px;
  transition: background var(--t-sm) var(--ease);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg);
}

/* ============ Custom Floating Side Slider (Dot Navigation) ============ */
.side-slider {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 995;
  pointer-events: none;
}

.side-slider__nav {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px 12px;
  background: color-mix(in srgb, var(--surface) 35%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 30px;
  pointer-events: auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: border-color var(--t-sm) var(--ease), box-shadow var(--t-sm) var(--ease);
}

.side-slider__nav:hover {
  border-color: color-mix(in srgb, var(--border) 150%, var(--primary));
}

.side-slider__dot {
  position: relative;
  display: block;
  width: 8px;
  height: 8px;
  background: var(--text-2);
  border-radius: 50%;
  opacity: 0.4;
  transition: transform var(--t-sm) var(--ease),
    background-color var(--t-sm) var(--ease),
    opacity var(--t-sm) var(--ease);
}

.side-slider__dot:hover {
  opacity: 0.9;
  transform: scale(1.25);
  background: var(--text);
}

.side-slider__dot.is-active {
  opacity: 1;
  background: var(--primary);
  transform: scale(1.4);
  box-shadow: 0 0 8px var(--primary);
}

/* Side Slider Tooltip */
.side-slider__tooltip {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%) translateX(10px);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-sm) var(--ease),
    transform var(--t-sm) var(--ease);
}

.side-slider__dot:hover .side-slider__tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Hide on mobile to keep layout clean and minimal */
@media (max-width: 768px) {
  .side-slider {
    display: none;
  }
}