/*
  RESON — a quiet, editorial personal site.
  The scale, spacing, and palette are defined here so the design stays cohesive.
*/

:root {
  color-scheme: dark;
  --color-bg: #0a0a09;
  --color-surface: #11110f;
  --color-surface-raised: #171714;
  --color-text: #f0eee7;
  --color-muted: #9c9a91;
  --color-line: rgba(240, 238, 231, 0.14);
  --color-line-strong: rgba(240, 238, 231, 0.28);
  --color-accent: #c7ff63;
  --font-sans: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --shell-width: 80rem;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --header-height: 5.5rem;
  --section-space: clamp(7rem, 14vw, 12rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --scroll-progress: 0;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
  background: var(--color-bg);
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 78% 12%, rgba(199, 255, 99, 0.055), transparent 27rem),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 0.45px, transparent 0.45px);
  background-size: 5px 5px;
  content: "";
  opacity: 0.13;
  pointer-events: none;
}

body.menu-open {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 5px;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

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

.shell {
  width: min(100%, var(--shell-width));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  transform: translateY(-200%);
  background: var(--color-accent);
  color: #0a0a09;
  font-size: 0.82rem;
  font-weight: 700;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 90;
  width: calc(var(--scroll-progress) * 100%);
  height: 2px;
  background: var(--color-accent);
  pointer-events: none;
}

/* Header and navigation */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  transition:
    height 350ms var(--ease-out),
    background-color 350ms ease,
    border-color 350ms ease;
}

.site-header.is-scrolled {
  height: 4.5rem;
  border-color: var(--color-line);
  background: rgba(10, 10, 9, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  line-height: 1;
}

.brand-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0.9rem rgba(199, 255, 99, 0.45);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

.nav-list a {
  position: relative;
  display: block;
  padding-block: 0.6rem;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 200ms ease;
}

.nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0.35rem;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--color-accent);
  content: "";
  transition: transform 300ms var(--ease-out);
}

.nav-list a:hover,
.nav-list a[aria-current="true"] {
  color: var(--color-text);
}

.nav-list a:hover::after,
.nav-list a[aria-current="true"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--color-text);
  font: inherit;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  min-height: 100svh;
  padding-top: calc(var(--header-height) + clamp(3rem, 8vh, 7rem));
  padding-bottom: clamp(2.5rem, 5vh, 4.5rem);
  flex-direction: column;
  justify-content: space-between;
}

.hero-kicker {
  display: flex;
  width: min(100%, 31rem);
  align-items: center;
  gap: 1rem;
  color: var(--color-muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.kicker-line {
  height: 1px;
  flex: 1;
  background: var(--color-line-strong);
}

.hero-layout {
  display: grid;
  align-items: end;
  grid-template-columns: minmax(0, 1fr) minmax(11rem, 0.27fr);
  gap: clamp(2rem, 6vw, 6rem);
}

.hero-copy h1 {
  max-width: 68rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
  font-size: clamp(3.8rem, 8.8vw, 8.1rem);
  font-weight: 620;
  letter-spacing: -0.068em;
  line-height: 0.91;
}

.hero-line {
  display: block;
}

.hero-line-offset {
  color: var(--color-muted);
}

.hero-intro {
  max-width: 41rem;
  margin: 0 0 0 clamp(0rem, 12vw, 9rem);
  color: #cbc9c0;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.55;
}

.hero-mark {
  display: grid;
  aspect-ratio: 1;
  max-width: 14rem;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  place-items: center;
  color: var(--color-accent);
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 250;
  letter-spacing: -0.08em;
  line-height: 1;
  transform: rotate(8deg);
  transition:
    border-color 350ms ease,
    transform 600ms var(--ease-out);
}

.hero-mark:hover {
  border-color: var(--color-accent);
  transform: rotate(0deg);
}

.scroll-cue {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: color 200ms ease;
}

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

.scroll-arrow {
  color: var(--color-accent);
  font-size: 1rem;
  animation: drift 2s ease-in-out infinite;
}

/* Shared section layout */
.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  scroll-margin-top: 2rem;
}

.section + .section {
  border-top: 1px solid var(--color-line);
}

.section-heading {
  display: grid;
  margin-bottom: clamp(4rem, 9vw, 8rem);
  grid-template-columns: minmax(9rem, 0.32fr) 1fr;
  gap: clamp(2rem, 6vw, 7rem);
}

.section-index,
.project-label,
.writing-number,
.coming-soon,
.status-pill,
.now-lead {
  font-size: 0.67rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-index {
  margin: 0;
  padding-top: 0.7rem;
  color: var(--color-accent);
}

.section-heading h2 {
  margin-bottom: 2rem;
  font-size: clamp(3rem, 6.8vw, 6.25rem);
  font-weight: 560;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.section-intro {
  max-width: 34rem;
  margin: 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

/* Work */
.project-list {
  border-top: 1px solid var(--color-line-strong);
}

.project {
  display: grid;
  min-height: 19rem;
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
  border-bottom: 1px solid var(--color-line);
  grid-template-columns: minmax(4rem, 0.18fr) minmax(0, 1fr) minmax(10rem, 0.3fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  transition: background-color 300ms ease;
}

.project:hover {
  background: rgba(255, 255, 255, 0.018);
}

.project-number {
  color: var(--color-muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.project-label {
  margin-bottom: 1.25rem;
  color: var(--color-muted);
}

.project h3 {
  margin-bottom: 1.5rem;
  font-size: clamp(2rem, 4vw, 4.25rem);
  font-weight: 550;
  letter-spacing: -0.045em;
  line-height: 1;
}

.project-description {
  max-width: 39rem;
  margin: 0;
  color: #b8b6ad;
  font-size: clamp(0.98rem, 1.3vw, 1.1rem);
}

.tech-list {
  display: flex;
  align-self: end;
  justify-content: flex-end;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tech-list li,
.status-pill {
  padding: 0.48rem 0.72rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-muted);
  font-size: 0.64rem;
  line-height: 1;
}

.project-featured h3::after {
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  margin-left: 0.65rem;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
  vertical-align: top;
}

.project-placeholder {
  min-height: 16rem;
}

.project-placeholder h3 {
  color: var(--color-muted);
}

.status-pill {
  width: fit-content;
  height: fit-content;
  margin: 0;
  align-self: end;
  justify-self: end;
  border-color: rgba(199, 255, 99, 0.3);
  color: var(--color-accent);
}

/* Writing */
.writing-grid {
  display: grid;
  border-top: 1px solid var(--color-line-strong);
  border-left: 1px solid var(--color-line);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.writing-card {
  position: relative;
  display: flex;
  min-height: 22rem;
  padding: clamp(2rem, 4vw, 3.5rem);
  overflow: hidden;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  flex-direction: column;
  transition: background-color 300ms ease;
}

.writing-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--color-accent);
  content: "";
  transition: transform 500ms var(--ease-out);
}

.writing-card:hover {
  background: var(--color-surface);
}

.writing-card:hover::before {
  transform: scaleX(1);
}

.writing-number {
  margin-bottom: auto;
  color: var(--color-muted);
}

.writing-card h3 {
  margin-bottom: 1rem;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 560;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.writing-card > p:not(.writing-number) {
  max-width: 27rem;
  margin-bottom: 2.25rem;
  color: var(--color-muted);
}

.coming-soon {
  width: fit-content;
  color: var(--color-accent);
}

/* Now */
.now-layout {
  display: grid;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  grid-template-columns: minmax(9rem, 0.33fr) 1fr;
  gap: clamp(2rem, 5vw, 6rem);
}

.now-lead {
  margin: 0;
  color: var(--color-accent);
}

.now-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-line);
  font-size: clamp(1.2rem, 2.3vw, 2rem);
  font-weight: 480;
  letter-spacing: -0.025em;
}

.now-list li:first-child {
  padding-top: 0;
}

.now-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.now-list li span:last-child {
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* About */
.about-layout {
  display: grid;
  grid-template-columns: minmax(14rem, 0.75fr) minmax(18rem, 1fr);
  gap: clamp(3rem, 8vw, 9rem);
}

.about-statement {
  margin: 0;
  color: var(--color-accent);
  font-size: clamp(2rem, 4.5vw, 4.3rem);
  font-weight: 520;
  letter-spacing: -0.055em;
  line-height: 1.04;
}

.about-copy {
  padding-top: 0.5rem;
}

.about-copy p {
  margin-bottom: 1.75rem;
  color: #c4c2b9;
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
}

.about-copy p:last-child {
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-line-strong);
}

.footer-inner {
  display: grid;
  min-height: 9rem;
  align-items: center;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  color: var(--color-muted);
  font-size: 0.75rem;
}

.footer-inner p {
  margin: 0;
}

.footer-brand {
  color: var(--color-text);
}

.footer-link {
  justify-self: end;
  transition: color 200ms ease;
}

.footer-link:hover {
  color: var(--color-accent);
}

/* Motion is progressive enhancement: content remains visible without JavaScript. */
.js.is-reveal-ready .reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition:
    opacity 800ms var(--ease-out),
    transform 800ms var(--ease-out);
}

.js.is-reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js .hero-kicker,
.js .hero-intro,
.js .scroll-cue,
.js .hero-mark {
  opacity: 0;
  animation: hero-enter 900ms var(--ease-out) forwards;
}

.js .hero-line {
  opacity: 0;
  transform: translateY(0.65em);
  animation: hero-line-enter 900ms var(--ease-out) forwards;
}

.js .hero-kicker {
  animation-delay: 100ms;
}

.js .hero-line:nth-child(1) {
  animation-delay: 170ms;
}

.js .hero-line:nth-child(2) {
  animation-delay: 260ms;
}

.js .hero-line:nth-child(3) {
  animation-delay: 350ms;
}

.js .hero-intro {
  animation-delay: 470ms;
}

.js .hero-mark {
  animation-delay: 540ms;
}

.js .scroll-cue {
  animation-delay: 650ms;
}

@keyframes hero-line-enter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drift {
  0%,
  100% {
    transform: translateY(-0.15rem);
  }
  50% {
    transform: translateY(0.25rem);
  }
}

@media (max-width: 58rem) {
  .hero-layout {
    grid-template-columns: 1fr;
  }

  .hero-mark {
    position: absolute;
    right: var(--gutter);
    bottom: 2rem;
    width: clamp(6rem, 18vw, 9rem);
  }

  .project {
    grid-template-columns: 3rem minmax(0, 1fr);
  }

  .tech-list,
  .status-pill {
    grid-column: 2;
    justify-self: start;
  }

  .tech-list {
    justify-content: flex-start;
  }
}

@media (max-width: 44rem) {
  :root {
    --header-height: 4.75rem;
    --section-space: 6.5rem;
  }

  .js .menu-toggle {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0;
    cursor: pointer;
  }

  .menu-label {
    font-size: 0.67rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .menu-icon {
    display: flex;
    width: 1.25rem;
    height: 0.75rem;
    flex-direction: column;
    justify-content: space-between;
  }

  .menu-icon span {
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 300ms var(--ease-out);
  }

  .menu-toggle[aria-expanded="true"] .menu-icon span:first-child {
    transform: translateY(0.345rem) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] .menu-icon span:last-child {
    transform: translateY(-0.345rem) rotate(-45deg);
  }

  .js .nav-list {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    padding: calc(var(--header-height) + 3rem) var(--gutter) 3rem;
    visibility: hidden;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.35rem;
    background: rgba(10, 10, 9, 0.98);
    opacity: 0;
    transform: translateY(-1rem);
    transition:
      opacity 300ms ease,
      transform 450ms var(--ease-out),
      visibility 300ms;
  }

  .js .nav-list.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .js .nav-list a {
    font-size: clamp(2.5rem, 13vw, 4.5rem);
    font-weight: 550;
    letter-spacing: -0.055em;
    line-height: 1.05;
    text-transform: none;
  }

  .js .nav-list a::after {
    display: none;
  }

  .hero {
    min-height: max(43rem, 100svh);
    padding-top: calc(var(--header-height) + 3.5rem);
  }

  .hero-copy h1 {
    font-size: clamp(3.35rem, 17vw, 5.6rem);
  }

  .hero-intro {
    margin-left: 0;
  }

  .hero-mark {
    display: none;
  }

  .section-heading,
  .now-layout,
  .about-layout {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 1.75rem;
  }

  .section-heading h2 {
    font-size: clamp(2.8rem, 14vw, 4.75rem);
  }

  .project {
    min-height: 0;
    grid-template-columns: 2rem minmax(0, 1fr);
  }

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

  .writing-card {
    min-height: 19rem;
  }

  .now-layout {
    gap: 2rem;
  }

  .now-list li {
    font-size: 1.15rem;
  }

  .footer-inner {
    min-height: 11rem;
    padding-block: 2.5rem;
    grid-template-columns: 1fr auto;
  }

  .footer-inner p {
    order: 3;
    grid-column: 1 / -1;
  }
}

@media (max-width: 28rem) {
  .hero-kicker {
    gap: 0.65rem;
    font-size: 0.6rem;
  }

  .project {
    display: block;
  }

  .project-number {
    margin-bottom: 1.5rem;
  }

  .tech-list,
  .status-pill {
    margin-top: 2rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}