/* ==========================================================
   Ashar Ahmed · personal site
   Editorial black & white. Paper and ink, alternating.
   ========================================================== */

:root {
  --paper: #f2efe9;      /* warm paper, never pure white */
  --ink:   #131210;      /* warm near-black, never pure black */
  --paper-dim: #6f6a61;  /* muted on paper */
  --ink-dim:   #8f8a81;  /* muted on ink */
  --hairline-paper: rgba(19, 18, 16, 0.25);
  --hairline-ink:   rgba(242, 239, 233, 0.25);
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --sans: "Archivo", "Helvetica Neue", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Section rhythm: DARK hero (space) → light about → DARK work → light contact */

body {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--paper);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--paper); color: var(--ink); }
.about ::selection,
.contact ::selection,
.site-foot ::selection { background: var(--ink); color: var(--paper); }

em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
}

/* ---------- fixed nav, self-inverting over ink/paper ---------- */

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem var(--gutter);
  mix-blend-mode: difference;
  color: #fff;               /* difference-inverts against both sections */
  transition: transform 0.45s var(--ease-out);
}

/* Scrolling down: slide the nav away so it never sits over content. */
.site-nav.is-hidden { transform: translateY(-105%); }

/* Scrolling back up mid-page: return on a solid paper bar instead of
   blending over whatever happens to be underneath. */
.site-nav.is-solid {
  mix-blend-mode: normal;
  background: var(--paper);
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-paper);
}
.site-nav.is-solid .nav-sig { filter: none; }

/* Signature is black ink; invert to white so the difference blend
   renders it dark on paper and light on ink, like the nav links. */
.nav-sig {
  display: block;
  height: 2.1rem;
  width: auto;
  filter: invert(1);
}

.site-nav a {
  color: inherit;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.site-nav nav { display: flex; gap: clamp(1rem, 3vw, 2.5rem); }

.site-nav nav a {
  font-weight: 400;
  opacity: 0.75;
  transition: opacity 0.25s ease;
}
.site-nav nav a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 0.35em; }

/* ---------- shared section scaffolding ---------- */

section { padding: clamp(5rem, 12vh, 9rem) var(--gutter); }

.kicker {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  padding-bottom: 0.9rem;
  margin-bottom: clamp(2.5rem, 7vh, 5rem);
  border-bottom: 1px solid var(--hairline-ink);
}

.kicker-no { font-weight: 700; }

/* ---------- 01 · hero (ink + orbit loop) ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: 30vh;
  padding-bottom: 0;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Earth-from-orbit loop over the ink hero: monochrome footage,
   screen-blended so black space dissolves into the section and the
   sunlit Earth glows. A gradient keeps the headline zone dark. */
.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08) brightness(0.92);
  mix-blend-mode: screen;
  opacity: 0.5;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(75deg, var(--ink) 18%, transparent 62%);
}

.hero-title { position: relative; }

.hero-title {
  font-size: clamp(3.2rem, 14.5vw, 12.5rem);
  font-weight: 800;
  font-stretch: 68%;
  line-height: 0.88;
  letter-spacing: -0.015em;
  text-transform: uppercase;
  margin: 2rem 0 clamp(2rem, 6vh, 4rem);
}

.hero-title .line { display: block; }

.hero-title em {
  text-transform: none;
  font-weight: 400;
  letter-spacing: -0.01em;
  font-size: 1.04em;
}

/* ---------- 02 · about (paper) ---------- */

.about {
  background: var(--paper);
  color: var(--ink);
}

.about .kicker { border-color: var(--hairline-paper); }

.about-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 4.5rem);
}

.about-lede {
  grid-column: 1;
  grid-row: 1;
  font-size: clamp(1.6rem, 3.8vw, 3.4rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.01em;
  max-width: 22ch;
  text-wrap: balance;
}

.about-lede em { font-size: 1.05em; }

.about-viz {
  grid-column: 2;
  grid-row: 1 / 3;
  justify-self: stretch;
  align-self: center;
  width: 100%;
}

.gh {
  border: 1px solid rgba(19, 18, 16, 0.35);
  padding: clamp(1rem, 2vw, 1.5rem);
}

.gh-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--hairline-paper);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.gh-stats {
  font-weight: 500;
  color: var(--paper-dim);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

#gh-spark {
  display: block;
  width: 100%;
  height: 46px;
  margin-top: 1rem;
}

.gh-spark-label {
  margin-top: 0.4rem;
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--paper-dim);
}

.gh-log {
  list-style: none;
  margin-top: 0.9rem;
}

.gh-log li { border-top: 1px solid var(--hairline-paper); }
.gh-log li:first-child { border-top: none; }

.gh-log a {
  display: block;
  padding: 0.6rem 0;
  color: inherit;
  text-decoration: none;
}

.gh-row-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.gh-repo {
  font-size: 0.78rem;
  font-weight: 700;
  font-stretch: 78%;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.gh-log a:hover .gh-repo { text-decoration: underline; text-underline-offset: 0.3em; }

.gh-meta {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--paper-dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.gh-desc {
  margin-top: 0.15rem;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--paper-dim);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}

.viz-caption {
  margin-top: 0.3rem;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--paper-dim);
}

.about-cols {
  grid-column: 1;
  grid-row: 2;
  margin-top: clamp(2.5rem, 6vh, 4.5rem);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
  max-width: 46rem;
  color: var(--paper-dim);
  font-size: 0.98rem;
  line-height: 1.65;
}

.about-cols p:first-child { color: var(--ink); }

/* ---------- 03 · featured work (ink) ---------- */

.work {
  background: var(--ink);
  color: var(--paper);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  margin-bottom: clamp(5rem, 14vh, 9rem);
}

.feature--flip .feature-info { order: 2; }
.feature--flip .mock { order: 1; }

.feature-index {
  font-size: 1.1rem;
  color: var(--ink-dim);
  margin-bottom: 1.2rem;
}

.feature-name {
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  font-weight: 800;
  font-stretch: 70%;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
}

.feature-desc {
  max-width: 34ch;
  color: var(--ink-dim);
  margin-bottom: 1.6rem;
}

.feature-meta {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  margin-bottom: 2rem;
}

.feature-link {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--paper);
  padding-bottom: 0.2em;
  transition: opacity 0.25s ease;
}
.feature-link:hover { opacity: 0.55; }

/* ---------- mock frames (shared) ---------- */

.mock {
  display: block;
  text-decoration: none;
  color: var(--ink);          /* card interiors stay paper/ink */
  background: var(--paper);
  border: 1px solid var(--ink);
  box-shadow: 14px 14px 0 rgba(242, 239, 233, 0.22);
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}

.mock:hover {
  transform: translate(-5px, -5px);
  box-shadow: 20px 20px 0 rgba(242, 239, 233, 0.32);
}

.mock-chrome {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--hairline-paper);
}

.mock-chrome i {
  width: 8px;
  height: 8px;
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.mock-url {
  flex: 1;
  text-align: center;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--paper-dim);
  /* offset the traffic lights so the label truly centers */
  margin-left: -39px;
}

.mock-body { padding: clamp(1rem, 2.5vw, 1.8rem); }

/* Dark-window variant · alternates the mock chrome: Ravelin dark,
   Scrobblr light, QR CLI dark. */
.mock--dark {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--paper);
}
.mock--dark .mock-chrome { border-color: var(--hairline-ink); }
.mock--dark .mock-chrome i { border-color: var(--paper); }
.mock--dark .mock-url { color: var(--ink-dim); }
.mock--dark .rv-head span,
.mock--dark .rv-stats span,
.mock--dark .rv-rows em { color: var(--ink-dim); }
.mock--dark .rv-stats { border-color: var(--hairline-ink); }
.mock--dark .rv-bars i { background: var(--paper); }
.mock--dark .rv-rows li { border-color: var(--hairline-ink); }
.mock--dark .tag { border-color: var(--paper); }
.mock--dark .tag--crit { background: var(--paper); color: var(--ink); }

/* ······ Ravelin · dashboard ······ */

.rv-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.2rem;
}
.rv-head b {
  font-weight: 800;
  font-stretch: 72%;
  text-transform: uppercase;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.rv-head span {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--paper-dim);
}

.rv-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--hairline-paper);
  border-bottom: 1px solid var(--hairline-paper);
  margin-bottom: 1.1rem;
}
.rv-stats b {
  display: block;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 800;
  font-stretch: 70%;
  line-height: 1;
}
.rv-stats span {
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--paper-dim);
}

.rv-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 58px;
  margin-bottom: 1.1rem;
}
.rv-bars i {
  flex: 1;
  height: 100%;
  background: var(--ink);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.9s var(--ease-out);
}
.is-visible .rv-bars i { transform: scaleY(var(--v)); }
.rv-bars i:nth-child(2)  { transition-delay: 0.05s; }
.rv-bars i:nth-child(3)  { transition-delay: 0.10s; }
.rv-bars i:nth-child(4)  { transition-delay: 0.15s; }
.rv-bars i:nth-child(5)  { transition-delay: 0.20s; }
.rv-bars i:nth-child(6)  { transition-delay: 0.25s; }
.rv-bars i:nth-child(7)  { transition-delay: 0.30s; }
.rv-bars i:nth-child(8)  { transition-delay: 0.35s; }
.rv-bars i:nth-child(9)  { transition-delay: 0.40s; }
.rv-bars i:nth-child(10) { transition-delay: 0.45s; }
.rv-bars i:nth-child(11) { transition-delay: 0.50s; }
.rv-bars i:nth-child(12) { transition-delay: 0.55s; }

.rv-rows { list-style: none; }
.rv-rows li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.45rem 0;
  border-top: 1px solid var(--hairline-paper);
  font-size: 0.72rem;
}
.rv-rows span { letter-spacing: 0.04em; }
.rv-rows em {
  font-family: var(--sans);
  font-style: normal;
  color: var(--paper-dim);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.tag {
  box-sizing: border-box;
  width: 3.2rem;
  text-align: center;
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border: 1px solid var(--ink);
  padding: 0.15em 0;
}
.tag--crit { background: var(--ink); color: var(--paper); }

/* ······ Scrobblr · menu bar ······ */

.mock--mac { padding-bottom: clamp(1.4rem, 3vw, 2.2rem); }

.mac-bar {
  display: flex;
  justify-content: space-between;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--hairline-paper);
  font-size: 0.64rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.mac-clock { color: var(--paper-dim); }

.mac-pop {
  width: min(78%, 21rem);
  margin: clamp(1.2rem, 3vw, 2rem) auto 0;
  border: 1px solid var(--ink);
  padding: 1rem;
  background: var(--paper);
}

.pop-track {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 0.9rem;
}

.pop-art {
  width: 46px;
  height: 46px;
  border: 1px solid var(--ink);
  background: repeating-linear-gradient(45deg, var(--ink) 0 4px, var(--paper) 4px 9px);
}

.pop-meta b {
  display: block;
  font-weight: 800;
  font-stretch: 74%;
  text-transform: uppercase;
  font-size: 0.88rem;
  line-height: 1.1;
}
.pop-meta span {
  font-size: 0.62rem;
  color: var(--paper-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.pop-eq {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 16px;
}
.pop-eq i {
  width: 3px;
  height: 100%;
  background: var(--ink);
  transform-origin: bottom;
  animation: eq 0.9s ease-in-out infinite alternate;
  animation-play-state: paused;
}
.is-visible .pop-eq i { animation-play-state: running; }
.pop-eq i:nth-child(1) { animation-delay: 0s;    }
.pop-eq i:nth-child(2) { animation-delay: -0.3s; }
.pop-eq i:nth-child(3) { animation-delay: -0.6s; }
.pop-eq i:nth-child(4) { animation-delay: -0.15s;}

@keyframes eq {
  from { transform: scaleY(0.2); }
  to   { transform: scaleY(1); }
}

.pop-progress {
  height: 3px;
  background: var(--hairline-paper);
  margin-bottom: 0.8rem;
  overflow: hidden;
}
.pop-progress i {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--ink);
  transform: translateX(-100%);
  animation: progress 18s linear infinite;
  animation-play-state: paused;
}
.is-visible .pop-progress i { animation-play-state: running; }

@keyframes progress {
  from { transform: translateX(-95%); }
  to   { transform: translateX(-10%); }
}

.pop-foot {
  display: flex;
  justify-content: space-between;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--paper-dim);
}

/* ······ QR CLI · terminal ······ */

.mock--term {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--paper);
}
.mock--term .mock-chrome { border-color: var(--hairline-ink); }
.mock--term .mock-chrome i { border-color: var(--paper); }
.mock--term .mock-url { color: var(--ink-dim); }

.term {
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.8;
  min-height: 15rem;
}

.term-prompt { color: var(--ink-dim); }

.term-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  background: var(--paper);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

#term-qr {
  display: block;
  width: clamp(7rem, 14vw, 9rem);
  height: auto;
  margin: 0.9rem 0;
  image-rendering: pixelated;
  opacity: 0;
  transition: opacity 0.5s ease;
}
#term-qr.is-on { opacity: 1; }

.term-ok {
  color: var(--ink-dim);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.term-ok.is-on { opacity: 1; }

.work-more {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}
.work-more a { color: var(--paper); text-decoration: none; }
.work-more a:hover { text-decoration: underline; text-underline-offset: 0.35em; }

/* ---------- 04 · contact (paper) ---------- */

.contact {
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(3rem, 8vh, 6rem);
}

.contact .kicker { border-color: var(--hairline-paper); }

.contact-lede {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  color: var(--paper-dim);
  margin-bottom: 1.5rem;
}

.contact-mail {
  display: block;
  width: fit-content;
  font-size: clamp(2rem, 7.5vw, 6.5rem);
  font-weight: 800;
  font-stretch: 70%;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1;
  color: inherit;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: border-color 0.3s ease;
}
.contact-mail:hover { border-color: var(--ink); }

.contact-links {
  display: flex;
  gap: 2.5rem;
  margin-top: clamp(3rem, 8vh, 5rem);
}
.contact-links a {
  color: var(--paper-dim);
  text-decoration: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  transition: color 0.25s ease;
}
.contact-links a:hover { color: var(--ink); }

/* ---------- footer (stays paper, continuous with contact) ---------- */

.site-foot {
  background: var(--paper);
  color: var(--paper-dim);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem var(--gutter);
  border-top: 1px solid var(--hairline-paper);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* ---------- scroll parallax ----------
   JS drives the `translate` property so it composes with the
   transform-based reveal and hover effects. */

[data-px] { will-change: translate; }

/* ---------- reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(1.4rem);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .mock { transition: none; }
  .pop-eq i, .pop-progress i, .term-cursor { animation: none; }
  .hero-video { display: none; }
  .rv-bars i { transform: scaleY(var(--v)); transition: none; }
  #term-qr, .term-ok { opacity: 1; transition: none; }
}

/* ---------- small screens ---------- */

@media (max-width: 860px) {
  .feature {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .feature--flip .feature-info { order: 1; }
  .feature--flip .mock { order: 2; }
  .mock { box-shadow: 8px 8px 0 rgba(242, 239, 233, 0.22); }
  .mock:hover { box-shadow: 12px 12px 0 rgba(242, 239, 233, 0.32); }
}

@media (max-width: 720px) {
  .hero { padding-top: 22vh; }

  .about-cols { grid-template-columns: 1fr; margin-left: 0; }

  .about-body { grid-template-columns: 1fr; }
  .about-viz {
    grid-column: 1;
    grid-row: 2;
    justify-self: start;
    margin-top: 3rem;
    width: 100%;
  }
  .about-cols { grid-row: 3; }

  .site-foot { flex-direction: column; gap: 0.3rem; }
}