/* Rahul Saini — rahulsaini.site
   Senior Full Stack Developer portfolio
   Design: dark editorial + technical grid */

:root {
  --bg: #07080a;
  --bg-2: #0b0d10;
  --bg-3: #11151b;
  --bg-4: #171c24;
  --line: rgba(236, 234, 228, 0.075);
  --line-2: rgba(236, 234, 228, 0.14);
  --text: #eceae4;
  --text-soft: #b7b4ab;
  --muted: #8c897f;
  --dim: #5e5c56;
  --accent: #c4b08a;
  --accent-dim: rgba(196, 176, 138, 0.14);
  --accent-2: #7f9a93;
  --accent-3: #8b9bb4;
  --ok: #8fba9a;
  --font-sans: "Outfit", system-ui, sans-serif;
  --font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 4.5rem;
  --pad: clamp(1.25rem, 4vw, 4.5rem);
  --max: 1200px;
  --max-wide: 1320px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  cursor: none;
}

body.is-touch {
  cursor: auto;
}

body.is-touch .cursor {
  display: none !important;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

img {
  max-width: 100%;
}

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

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

button {
  background: none;
  border: 0;
  cursor: none;
}

body.is-touch button {
  cursor: pointer;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent);
}

/* Ambient */
.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 75%);
}

.grid-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 15% 0%, rgba(196, 176, 138, 0.08), transparent 55%),
    radial-gradient(ellipse 50% 35% at 90% 10%, rgba(127, 154, 147, 0.06), transparent 50%);
}

/* Cursor */
.cursor {
  pointer-events: none;
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  mix-blend-mode: difference;
}

.cursor__dot,
.cursor__ring {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.cursor__dot {
  width: 6px;
  height: 6px;
  background: #fff;
}

.cursor__ring {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  transition: width 0.25s var(--ease), height 0.25s var(--ease), opacity 0.25s;
}

body.is-hovering .cursor__ring {
  width: 64px;
  height: 64px;
  opacity: 0.85;
}

/* Boot */
.boot {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  background: var(--bg);
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}

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

.boot__panel {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  letter-spacing: 0.06em;
}

.boot__prompt {
  color: var(--accent);
  margin-right: 0.6rem;
}

.boot__line {
  margin: 0.35rem 0;
  opacity: 0;
  animation: bootIn 0.5s var(--ease) forwards;
}

.boot__line--delay {
  animation-delay: 0.28s;
}

.boot__line--delay2 {
  animation-delay: 0.52s;
}

@keyframes bootIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: var(--nav-h);
  padding: 0 var(--pad);
  background: linear-gradient(to bottom, rgba(7, 8, 10, 0.92), rgba(7, 8, 10, 0.55) 70%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(7, 8, 10, 0.88);
}

.nav__brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  z-index: 2;
}

.nav__mark {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

.nav__domain {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: lowercase;
}

.nav__links {
  margin-left: auto;
}

.nav__links-inner {
  display: flex;
  gap: 1.6rem;
}

.nav__links a {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-soft);
  position: relative;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.35s var(--ease);
}

.nav__links a:hover::after,
.nav__links a.is-active::after {
  width: 100%;
}

.nav__talk {
  margin-left: 0.5rem;
}

.nav__toggle {
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  position: relative;
  z-index: 2;
}

.nav__toggle span {
  position: absolute;
  left: 0.5rem;
  right: 0.5rem;
  height: 1px;
  background: var(--text);
  transition: transform 0.3s var(--ease), top 0.3s;
}

.nav__toggle span:first-child {
  top: 0.95rem;
}

.nav__toggle span:last-child {
  top: 1.35rem;
}

.nav.is-open .nav__toggle span:first-child {
  top: 1.15rem;
  transform: rotate(40deg);
}

.nav.is-open .nav__toggle span:last-child {
  top: 1.15rem;
  transform: rotate(-40deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3rem;
  padding: 0 1.4rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  background: transparent;
  transition: background 0.3s, border-color 0.3s, color 0.3s, transform 0.3s var(--ease);
}

.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--fill {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.btn--fill:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.btn--small {
  min-height: 2.35rem;
  padding: 0 1rem;
  font-size: 0.68rem;
}

.btn--ghost {
  border-color: transparent;
  padding-left: 0.2rem;
}

/* Sections */
.section,
.hero,
#contact {
  scroll-margin-top: calc(var(--nav-h) + 0.4rem);
}

.section {
  position: relative;
  z-index: 1;
  padding: clamp(5rem, 12vw, 9rem) var(--pad);
  max-width: var(--max-wide);
  margin: 0 auto;
}

.section__head {
  max-width: 40rem;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.section__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section__intro {
  margin: 1.25rem 0 0;
  color: var(--text-soft);
  max-width: 38rem;
  font-size: 1.02rem;
}

/* Hero */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) var(--pad) 4rem;
}

.hero__frame {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.9fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  max-width: var(--max-wide);
  margin: 0 auto;
  width: 100%;
}

.hero__kicker {
  margin: 0 0 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__name {
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: var(--font-serif);
  font-size: clamp(4rem, 11vw, 8.4rem);
  font-weight: 400;
  line-height: 0.86;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.hero__name span:last-child {
  color: transparent;
  -webkit-text-stroke: 1px rgba(236, 234, 228, 0.72);
}

.hero__headline {
  margin: 1.6rem 0 0;
  max-width: 18ch;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.4rem, 2.6vw, 2.05rem);
  line-height: 1.3;
  color: var(--text-soft);
}

.hero__lede {
  margin: 1.3rem 0 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.8rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}

.hero__meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.hero__stage {
  position: relative;
  min-height: 420px;
}

.sysmap {
  width: 100%;
  height: 380px;
}

.sysmap svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.sysmap .edge {
  fill: none;
  stroke: rgba(196, 176, 138, 0.28);
  stroke-width: 1;
}

.sysmap .packet {
  fill: var(--accent);
}

.sysmap .node-core {
  fill: var(--bg-3);
  stroke: var(--accent);
  stroke-width: 1.2;
}

.sysmap .node {
  fill: var(--bg-2);
  stroke: var(--line-2);
  stroke-width: 1;
}

.sysmap text {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  fill: var(--text-soft);
  text-transform: uppercase;
}

.sysmap .core-label {
  fill: var(--accent);
  font-size: 10px;
}

.terminal {
  position: absolute;
  right: 0;
  bottom: -0.5rem;
  width: min(100%, 280px);
  background: rgba(12, 14, 17, 0.92);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  backdrop-filter: blur(8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
}

.terminal__bar span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3a3d42;
}

.terminal__bar span:nth-child(1) {
  background: #6d5a4c;
}

.terminal__bar span:nth-child(2) {
  background: #5c5a42;
}

.terminal__bar span:nth-child(3) {
  background: #3f5248;
}

.terminal__bar em {
  margin-left: auto;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.terminal__body {
  padding: 0.8rem 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.7;
  color: var(--accent-2);
  min-height: 7.2rem;
}

.terminal__body .ok {
  color: var(--ok);
}

.terminal__body .muted {
  color: var(--dim);
}

.hero__orbit {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-width: var(--max-wide);
  margin: 2.5rem auto 0;
  width: 100%;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-soft);
  border: 1px solid var(--line);
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(17, 21, 27, 0.55);
  transition: border-color 0.3s, color 0.3s, transform 0.4s var(--ease);
}

.chip:hover,
.chip.is-on {
  border-color: var(--accent);
  color: var(--accent);
}

.hero__scroll {
  position: absolute;
  bottom: 1.6rem;
  left: var(--pad);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}

.hero__scroll i {
  display: block;
  width: 1px;
  height: 2.4rem;
  background: linear-gradient(to bottom, var(--accent), transparent);
  position: relative;
  overflow: hidden;
}

.hero__scroll i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #fff;
  animation: scrollPulse 1.8s var(--ease) infinite;
}

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

/* About */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.about__prose p {
  margin: 0 0 1.1rem;
  color: var(--text-soft);
  font-size: 1.05rem;
}

.about__pillars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.about__pillars li {
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: rgba(17, 21, 27, 0.4);
  transition: border-color 0.3s, transform 0.4s var(--ease);
}

.about__pillars li:hover {
  border-color: var(--line-2);
  transform: translateY(-2px);
}

.about__pillars strong {
  display: block;
  font-weight: 500;
  font-size: 0.86rem;
  margin-bottom: 0.25rem;
}

.about__pillars span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.evolution {
  margin-top: clamp(3.5rem, 8vw, 6rem);
}

.evolution__label {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.evolution__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.evolution__track::before {
  content: "";
  position: absolute;
  top: 18px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), var(--accent-3), transparent);
}

.evo {
  padding: 0 1rem 0 0;
  position: relative;
}

.evo__phase {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  margin-bottom: 1.2rem;
  position: relative;
  z-index: 1;
}

.evo__era {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.evo h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
  font-weight: 500;
}

.evo p {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.evo__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.evo__tags span {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  border: 1px solid var(--line);
  padding: 0.2rem 0.4rem;
}

/* Stack */
.stack__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(240px, 0.7fr);
  gap: 2rem;
  align-items: start;
}

.stack-group {
  margin-bottom: 1.6rem;
}

.stack-group__label {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dim);
}

.stack-group__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tech {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-3);
  color: var(--text);
  padding: 0.7rem 1rem;
  border-radius: 2px;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: border-color 0.25s, background 0.25s, color 0.25s;
}

.tech:hover,
.tech.is-active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.stack__detail {
  position: sticky;
  top: calc(var(--nav-h) + 1.2rem);
  min-height: 240px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(196, 176, 138, 0.04), transparent 40%),
    var(--bg-2);
}

.stack__detail-hint {
  margin: 0;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.stack__detail .role {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.stack__detail h3 {
  margin: 0 0 0.8rem;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
}

.stack__detail p {
  margin: 0 0 1.1rem;
  color: var(--text-soft);
}

.stack__related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.stack__related span {
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.25rem 0.5rem;
}

/* Work */
.work__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  margin-bottom: 1.8rem;
}

.work__head .section__head {
  margin-bottom: 0;
}

.work__count {
  margin: 0 0 0.4rem;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}

.work__count em {
  display: block;
  font-style: normal;
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 0.9;
}

.work__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.4rem;
}

.work-filter {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: border-color 0.25s, color 0.25s, background 0.25s;
}

.work-filter:hover,
.work-filter.is-on {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.work__stage {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(300px, 1.15fr);
  border: 1px solid var(--line);
  background: rgba(11, 13, 16, 0.55);
  min-height: 520px;
  align-items: stretch;
}

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

.work-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.9rem;
  align-items: start;
  width: 100%;
  text-align: left;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
  background: transparent;
  position: relative;
  transition: background 0.3s;
}

.work-item:last-child {
  border-bottom: 0;
}

.work-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 0.35s var(--ease);
}

.work-item:hover {
  background: rgba(196, 176, 138, 0.04);
}

.work-item.is-active {
  background: linear-gradient(90deg, rgba(196, 176, 138, 0.08), transparent 70%);
}

.work-item.is-active::before {
  transform: scaleY(1);
}

.work-item__n {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--dim);
  padding-top: 0.35rem;
}

.work-item.is-active .work-item__n {
  color: var(--accent);
}

.work-item__cat {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.work-item h3 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.work-item__sum {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.work__preview {
  border-left: 1px solid var(--line);
  padding: 1.4rem 1.5rem 1.6rem;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(196, 176, 138, 0.07), transparent 50%),
    var(--bg-2);
}

.preview__top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1rem;
}

.preview__cat {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.preview__n {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 0.14em;
}

.preview__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.4vw, 2.05rem);
  font-weight: 400;
  line-height: 1.15;
}

.preview__problem {
  margin: 0 0 1.1rem;
  color: var(--text-soft);
  font-size: 0.92rem;
  max-width: 42rem;
}

.preview__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.15rem;
}

.preview__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.2rem;
  padding-top: 0.2rem;
}

.preview__hint {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}

/* Blueprints */
.bp {
  position: relative;
  height: 220px;
  margin-bottom: 1.15rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    var(--bg);
  background-size: 24px 24px;
  overflow: hidden;
}

.bp-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.7rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
  white-space: nowrap;
}

.bp-node.is-core {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.bp-hub {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--bg-2);
  box-shadow: 0 0 0 8px rgba(196, 176, 138, 0.06);
  z-index: 1;
}

.bp--crm .bp-node {
  position: absolute;
}

.bp-orbit {
  position: absolute;
  inset: 0;
}

.bp--crm .bp-orbit .bp-node:nth-child(1) { left: 7%; top: 12%; }
.bp--crm .bp-orbit .bp-node:nth-child(2) { right: 7%; top: 12%; }
.bp--crm .bp-orbit .bp-node:nth-child(3) { left: 7%; bottom: 12%; }
.bp--crm .bp-orbit .bp-node:nth-child(4) { right: 7%; bottom: 12%; }
.bp--crm .bp-orbit .bp-node:nth-child(5) { left: 50%; top: 10%; transform: translateX(-50%); }

.bp-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 160px;
  height: 160px;
  margin: -80px 0 0 -80px;
  border: 1px dashed rgba(196, 176, 138, 0.25);
  border-radius: 50%;
  animation: spin 24s linear infinite;
}

.bp--erp,
.bp--flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0 1rem;
}

.bp-step {
  display: flex;
  align-items: center;
  gap: 0;
}

.bp-arrow {
  width: 28px;
  height: 1px;
  background: var(--accent);
  position: relative;
  margin: 0 0.15rem;
}

.bp-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  border: 4px solid transparent;
  border-left-color: var(--accent);
  border-right: 0;
}

.bp-packet {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: packet 2.4s var(--ease) infinite;
}

.bp--dashboard {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 12px;
  height: 220px;
}

.bp-widget {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 0.7rem 0.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bp-widget em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}

.bp-widget strong {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 400;
}

.bp-bars {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 42px;
}

.bp-bars i {
  flex: 1;
  background: var(--accent);
  opacity: 0.35;
  animation: bar 2.8s ease-in-out infinite;
}

.bp-bars i:nth-child(1) { height: 40%; animation-delay: 0s; }
.bp-bars i:nth-child(2) { height: 70%; animation-delay: 0.15s; opacity: 0.7; }
.bp-bars i:nth-child(3) { height: 55%; animation-delay: 0.3s; }
.bp-bars i:nth-child(4) { height: 90%; animation-delay: 0.45s; opacity: 0.85; }
.bp-bars i:nth-child(5) { height: 48%; animation-delay: 0.6s; }

.bp-rows span {
  display: block;
  height: 5px;
  background: var(--line-2);
  margin: 0.35rem 0;
  width: 100%;
}

.bp-rows span:nth-child(2) { width: 72%; }
.bp-rows span:nth-child(3) { width: 88%; }

.bp--api {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
  padding: 1rem 1.4rem;
}

.bp-layer {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: 0.7rem;
  align-items: center;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bp-layer + .bp-layer {
  margin-top: 6px;
}

.bp-layer b {
  color: var(--accent);
  font-weight: 500;
}

.bp-layer span {
  color: var(--muted);
}

.bp-layer i {
  font-style: normal;
  color: var(--ok);
}

.bp--portal {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  padding: 1.2rem 1.6rem;
}

.bp-slab {
  border: 1px solid var(--line-2);
  background: var(--bg-3);
  padding: 0.55rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.bp-slab:nth-child(1) { width: 70%; margin: 0 auto; border-color: var(--accent-3); }
.bp-slab:nth-child(2) { width: 82%; margin: 0 auto; }
.bp-slab:nth-child(3) { width: 92%; margin: 0 auto; border-color: var(--accent); color: var(--accent); }
.bp-slab:nth-child(4) { width: 100%; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes packet {
  0% { left: 8%; opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { left: 88%; opacity: 0; }
}

@keyframes bar {
  0%, 100% { transform: scaleY(0.75); transform-origin: bottom; }
  50% { transform: scaleY(1); transform-origin: bottom; }
}

.bp--erp .bp-packet,
.bp--flow .bp-packet {
  top: 50%;
  margin-top: -3px;
}

/* Drawer */
.drawer[hidden] {
  display: none !important;
}

.drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(720px, 100%);
  height: 100%;
  background: var(--bg-2);
  border-left: 1px solid var(--line);
  overflow: auto;
  padding: 5.5rem var(--pad) 3rem;
  opacity: 0;
  transform: translateX(12%);
  transition: opacity 0.4s var(--ease), transform 0.45s var(--ease);
}

.drawer.is-open .drawer__panel {
  opacity: 1;
  transform: none;
}

.drawer__close {
  position: absolute;
  top: 5rem;
  right: var(--pad);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.case__cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.6rem;
}

.case h2 {
  margin: 0 0 1.2rem;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 400;
}

.case__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin: 0.4rem 0 0.6rem;
}

.case h3 {
  margin: 1.6rem 0 0.5rem;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 500;
}

.case p,
.case li {
  color: var(--text-soft);
}

.case ul {
  margin: 0;
  padding-left: 1.1rem;
}

.case li {
  margin: 0.35rem 0;
}

.case__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.case__result {
  padding: 1rem 1.1rem;
  border-left: 2px solid var(--accent);
  background: rgba(196, 176, 138, 0.05);
  color: var(--text-soft);
}

.case .bp {
  height: 180px;
  margin: 0 0 1.2rem;
}

/* What I build */
.build {
  border-top: 1px solid var(--line);
}

.build-row {
  width: 100%;
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding: 0;
  background: transparent;
}

.build-row__head {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1.5rem 0.2rem;
}

.build-row__id {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
}

.build-row__head h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.build-row__hint {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.build-row__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s var(--ease);
}

.build-row.is-open .build-row__body {
  grid-template-rows: 1fr;
}

.build-row__inner {
  overflow: hidden;
}

.build-row__inner-pad {
  padding: 0 0 1.8rem 5.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  max-width: 52rem;
}

.build-row__inner p {
  margin: 0 0 0.7rem;
  color: var(--text-soft);
}

.build-row.is-open .build-row__hint {
  color: var(--accent);
}

.build-row:hover .build-row__head h3 {
  color: var(--accent);
}

/* Experience */
.timeline {
  position: relative;
  margin-left: 0.4rem;
  padding-left: 2rem;
  border-left: 1px solid var(--line-2);
}

.tl {
  position: relative;
  padding-bottom: 3rem;
}

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

.tl::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.35rem;
  width: 9px;
  height: 9px;
  margin-left: -5px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--accent);
  box-shadow: 0 0 0 6px rgba(196, 176, 138, 0.08);
}

.tl__era {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.tl__meta {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.tl h3 {
  margin: 0 0 0.7rem;
  font-size: 1.45rem;
  font-weight: 500;
}

.tl > p {
  margin: 0 0 1rem;
  color: var(--text-soft);
  max-width: 40rem;
}

.tl ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.tl li {
  position: relative;
  padding: 0.25rem 0 0.25rem 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.tl li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8rem;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

/* Contact */
.contact__frame {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 5rem);
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 0% 0%, rgba(196, 176, 138, 0.07), transparent 45%),
    var(--bg-2);
}

.contact__mail {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--accent);
  border-bottom: 1px solid transparent;
}

.contact__mail:hover {
  border-bottom-color: var(--accent);
}

.contact__avail {
  margin-top: 1.2rem;
  color: var(--muted);
  max-width: 28rem;
}

.contact__form {
  display: grid;
  gap: 1rem;
  position: relative;
}

.contact__form label span {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.contact__form input,
.contact__form textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 0.85rem 0.9rem;
  border-radius: 2px;
  outline: none;
  cursor: text;
}

.contact__form input:focus,
.contact__form textarea:focus {
  border-color: var(--accent);
}

.contact__form textarea {
  resize: vertical;
  min-height: 8rem;
}

.contact__note {
  margin: 0;
  font-size: 0.78rem;
  color: var(--dim);
}

.contact__status {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
}

.contact__status.is-ok {
  color: var(--ok);
}

.contact__status.is-err {
  color: #c47a6a;
}

.hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  padding: 3rem var(--pad) 2rem;
  border-top: 1px solid var(--line);
  max-width: var(--max-wide);
  margin: 0 auto;
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  padding-bottom: 2rem;
}

.footer__name {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.footer__title {
  margin: 0.6rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer__domain {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--dim);
}

.footer__bottom a:hover {
  color: var(--text);
}

body.is-locked {
  overflow: hidden;
}

/* Responsive */
@media (max-width: 980px) {
  .hero__frame,
  .about__grid,
  .stack__layout,
  .contact__frame,
  .evolution__track {
    grid-template-columns: 1fr;
  }

  .hero__stage {
    min-height: 0;
  }

  .sysmap {
    height: 280px;
  }

  .terminal {
    position: relative;
    width: 100%;
    bottom: auto;
    margin-top: 1rem;
  }

  .stack__detail {
    position: relative;
    top: auto;
  }

  .evolution__track::before {
    display: none;
  }

  .evo {
    padding: 1.2rem 0;
    border-top: 1px solid var(--line);
  }

  .work__head {
    flex-direction: column;
    align-items: flex-start;
  }

  .work__count {
    text-align: left;
  }

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

  .work__preview {
    border-left: 0;
    border-bottom: 1px solid var(--line);
    order: -1;
  }

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

  .build-row__head {
    grid-template-columns: 3rem 1fr;
  }

  .build-row__hint {
    display: none;
  }

  .build-row__inner-pad {
    padding-left: 3rem;
    grid-template-columns: 1fr;
  }

  .nav__talk {
    display: none;
  }

  .nav__toggle {
    display: block;
    margin-left: auto;
  }

  .nav__links {
    position: fixed;
    inset: 0;
    margin: 0;
    background: rgba(7, 8, 10, 0.96);
    display: grid;
    place-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .nav.is-open .nav__links {
    opacity: 1;
    visibility: visible;
  }

  .nav__links-inner {
    flex-direction: column;
    align-items: center;
    gap: 1.6rem;
    font-size: 1.2rem;
  }

  .nav__links a {
    font-size: 1rem;
  }
}

@media (max-width: 640px) {
  .about__pillars {
    grid-template-columns: 1fr;
  }

  .hero__name {
    font-size: clamp(3.2rem, 18vw, 5rem);
  }

  .hero__scroll {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .boot {
    display: none;
  }

  html {
    scroll-behavior: auto;
  }
}