/* ============================================================
   Aditya Jhalani — portfolio
   Reference lock: cobalt field intro / collage marquee /
   scramble type / black bands / numbered case studies.
   Tokens: cobalt #1533FF (brand + intro field only),
   ink #0A0A0A, paper #FFFFFF, gray #666.
   Type: Space Grotesk (display/body), JetBrains Mono (labels).
   ============================================================ */

:root {
  --blue: #1533ff;
  --blue-deep: #0f24c4;
  --ink: #0a0a0a;
  --paper: #ffffff;
  --gray: #666666;
  --gray-light: #999999;
  --line: rgba(10, 10, 10, 0.12);
  --font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
  --pad: clamp(20px, 5vw, 80px);
}

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

html { scroll-behavior: smooth; }

/* Content stays readable without JavaScript. JS opts into motion/reveal states. */
html.js .reveal {
  opacity: 0;
  transform: translateY(28px);
}

html:not(.js) .intro { display: none; }

[id] { scroll-margin-top: 84px; }

:where(a, button) {
  -webkit-tap-highlight-color: rgba(21, 51, 255, 0.18);
}

:where(a, button):focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--blue); color: var(--paper); }

img { display: block; max-width: 100%; }

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

/* ---------- intro cobalt field ---------- */

.intro {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  transition: transform 0.9s cubic-bezier(0.76, 0, 0.24, 1);
}

html.js .intro { display: flex; }

.intro.done { transform: translateY(-101%); }

.intro-mark {
  width: 84px;
  height: 84px;
  border: 3px solid var(--paper);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  color: var(--paper);
  letter-spacing: 0.05em;
  animation: mark-spin 1.6s cubic-bezier(0.76, 0, 0.24, 1) 0.2s both;
}

@keyframes mark-spin {
  from { transform: rotate(-90deg) scale(0.6); opacity: 0; }
  to   { transform: rotate(0deg) scale(1); opacity: 1; }
}

.intro-name {
  font-family: var(--font-mono);
  font-size: clamp(14px, 2vw, 18px);
  letter-spacing: 0.35em;
  color: var(--paper);
  text-transform: uppercase;
}

.intro-tick {
  position: absolute;
  bottom: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.6);
}

/* ---------- nav ---------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.nav-brand .mark {
  width: 26px;
  height: 26px;
  background: var(--blue);
  color: var(--paper);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.nav-links { display: flex; align-items: center; gap: 10px; }

.btn {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 11px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s, color 0.2s;
  text-transform: uppercase;
}

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

.btn.ghost {
  background: transparent;
  color: var(--ink);
}

.btn.ghost:hover { background: var(--ink); color: var(--paper); }

.btn.blue { background: var(--blue); border-color: var(--blue); }
.btn.blue:hover { background: var(--ink); border-color: var(--ink); }

.nav-contact {
  width: 40px;
  height: 40px;
  background: var(--blue);
  color: var(--paper);
  border: none;
  display: grid;
  place-items: center;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

.nav-contact:hover { background: var(--ink); }

/* ---------- collage marquee (photos) ---------- */

.collage {
  padding-top: 76px;
  background: var(--paper);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.marquee {
  display: flex;
  gap: 14px;
  width: max-content;
  padding: 7px 0;
}

.marquee.rtl { animation: scroll-l 42s linear infinite; }
.marquee.ltr { animation: scroll-r 48s linear infinite; }

.motion-toggle {
  position: absolute;
  right: var(--pad);
  top: 88px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 8px 10px;
  cursor: pointer;
}

.motion-toggle:hover,
.motion-toggle[aria-pressed="true"] {
  color: var(--paper);
  background: var(--ink);
}

.collage { position: relative; }

.marquee > [aria-hidden="true"] { user-select: none; }

.noscript-photo { display: block; }
html.js .noscript-photo { display: none; }
.noscript-photo img { width: 100%; height: auto; aspect-ratio: 1182 / 664; object-fit: cover; }
.noscript-photo span { display: block; padding: 8px 12px; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--gray); }

.motion-paused .marquee { animation-play-state: paused; }

@keyframes scroll-l { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes scroll-r { from { transform: translateX(-50%); } to { transform: translateX(0); } }

.photo-tile {
  width: 360px;
  height: 240px;
  aspect-ratio: 3 / 2;
  flex: none;
  position: relative;
  overflow: hidden;
  background: #ececea;
  border: 1px solid var(--line);
}

.photo-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.photo-tile:hover img { transform: scale(1.04); filter: saturate(1.05); }

.photo-tile .cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  background: linear-gradient(transparent, rgba(10, 10, 10, 0.72));
  z-index: 2;
}

.photo-tile.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(10,10,10,0.03) 14px 28px),
    #f4f4f2;
  border: 1px dashed rgba(10, 10, 10, 0.28);
}

.photo-tile.empty .cap {
  position: static;
  background: none;
  color: var(--gray);
  text-align: center;
  line-height: 1.9;
}

.photo-tile.empty .plus {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--blue);
}


.tile {
  width: 360px;
  height: 232px;
  flex: none;
  background: var(--ink);
  color: var(--paper);
  overflow: hidden;
  position: relative;
  font-family: var(--font-mono);
}

.tile.light { background: #f2f2f0; color: var(--ink); border: 1px solid var(--line); }
.tile.cobalt { background: var(--blue); }

.tile-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
}

.tile.light .tile-head { border-color: var(--line); }

.tile-head .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: 0.5; }

.tile-body {
  padding: 14px;
  font-size: 11.5px;
  line-height: 1.75;
  white-space: pre;
  overflow: hidden;
}

.tile-body .c { color: #7d8cff; }
.tile.light .tile-body .c { color: var(--blue); }
.tile-body .g { opacity: 0.45; }

.tile-big {
  position: absolute;
  bottom: 6px;
  right: 12px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 54px;
  letter-spacing: -0.04em;
  opacity: 0.14;
  pointer-events: none;
}

.tile canvas { position: absolute; inset: 36px 0 0 0; width: 100%; height: calc(100% - 36px); }

/* Learning approach diagram: same cobalt, type and rules as the original site. */
.project-media.learning-media { background: var(--blue); color: var(--paper); aspect-ratio: auto; }
.learning-score { width: 100%; padding: 82px clamp(24px, 5vw, 72px) 44px; }
.learning-heading { font-size: clamp(34px, 4vw, 60px); font-weight: 500; line-height: 1.08; letter-spacing: -0.035em; margin-bottom: 36px; }
.learning-score ol { list-style: none; padding: 0; margin: 0; }
.learning-score li { display: flex; gap: 22px; padding: 19px 0; border-top: 1px solid rgba(255,255,255,.35); font-size: 24px; }
.learning-score li > span { padding-top: 6px; font: 12px var(--font-mono); }
.learning-score small { display: block; font-size: 14px; line-height: 1.5; margin-top: 5px; }
.learning-foot { font: 11px/1.7 var(--font-mono); letter-spacing: .08em; margin-top: 30px; }

/* ---------- hero ---------- */

.hero {
  padding: clamp(56px, 9vw, 120px) var(--pad) clamp(40px, 6vw, 80px);
}

.hero h1 {
  font-size: clamp(30px, 4.4vw, 56px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 22ch;
  text-wrap: balance;
}

.hero h1 .blue { color: var(--blue); }

.hero-sub {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}

/* ---------- status strip ---------- */

.strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.strip-item {
  flex: 1 1 200px;
  padding: 22px var(--pad);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
}

.strip-item:last-child { border-right: none; }

.strip-item .k {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-light);
  display: block;
  margin-bottom: 6px;
}

.strip-item .v { font-size: 13px; letter-spacing: 0.04em; }
.strip-item .v.blue { color: var(--blue); }

/* ---------- about (black band) ---------- */

.about {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(64px, 9vw, 120px) var(--pad);
}

.about .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 28px;
}

.about p {
  font-size: clamp(18px, 2.1vw, 26px);
  line-height: 1.55;
  font-weight: 400;
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.92);
}

.about p + p { margin-top: 1.2em; }

.about .hl { color: #8b9aff; }

/* ---------- projects ---------- */

.projects-head {
  padding: clamp(64px, 8vw, 110px) var(--pad) clamp(28px, 4vw, 48px);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.projects-head h2 {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.projects-head .count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--gray);
}

.project {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  padding: clamp(40px, 6vw, 90px) var(--pad);
  border-top: 1px solid var(--line);
  align-items: start;
}

.project-media {
  position: sticky;
  top: 96px;
  background: var(--ink);
  aspect-ratio: 4 / 3;
  overflow: hidden;
  color: var(--paper);
}

.project-media .media-inner {
  position: absolute;
  inset: 0;
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
}

.project-media canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.project-media .media-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 2;
}

.project-info .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--blue);
  display: block;
  margin-bottom: 14px;
}

.project-info h3 {
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.project-info .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  display: block;
  margin-bottom: 22px;
}

.project-info .desc {
  font-size: 17px;
  line-height: 1.65;
  color: var(--gray);
  max-width: 52ch;
  margin-bottom: 26px;
}

.project-context-photo {
  margin: 0 0 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #f2f2f0;
}

.project-context-photo img {
  width: 100%;
  aspect-ratio: 1182 / 664;
  object-fit: cover;
}

.project-context-photo figcaption {
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.stack span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 7px 12px;
  border: 1px solid var(--line);
  color: var(--ink);
}

/* ---------- case study pages ---------- */

.case-hero {
  background: var(--blue);
  color: var(--paper);
  padding: 150px var(--pad) clamp(48px, 7vw, 90px);
}

.case-hero .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.25em;
  display: block;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.7);
}

.case-hero h1 {
  font-size: clamp(44px, 7vw, 92px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.02;
}

.case-hero .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.75);
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
}

.case-meta .strip-item { border-right: 1px solid var(--line); }

.case-body {
  max-width: 900px;
  padding: clamp(48px, 7vw, 90px) var(--pad);
}

.case-body section + section { margin-top: clamp(44px, 6vw, 72px); }

.case-body h2 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 18px;
}

.case-body p {
  font-size: 17.5px;
  line-height: 1.7;
  color: #333;
}

.case-body p + p { margin-top: 1em; }

.case-body ul {
  list-style: none;
  margin-top: 8px;
}

.case-body li {
  font-size: 16.5px;
  line-height: 1.65;
  color: #333;
  padding: 12px 0 12px 26px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.case-body li::before {
  content: ">";
  font-family: var(--font-mono);
  color: var(--blue);
  position: absolute;
  left: 0;
}

.media-slot {
  margin: clamp(40px, 6vw, 64px) 0 0;
  background: #f2f2f0;
  border: 1px dashed rgba(10, 10, 10, 0.25);
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
}

.media-slot .note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
  max-width: 46ch;
  line-height: 1.8;
}

.case-next {
  border-top: 1px solid var(--line);
  padding: clamp(48px, 7vw, 80px) var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.case-next .hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-light);
}

.case-next a.big {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: color 0.2s;
}

.case-next a.big:hover { color: var(--blue); }

/* ---------- recent work / beyond the code ---------- */

.recent-work { border-top: 1px solid var(--line); }

.recent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
}

.recent-card {
  padding: clamp(32px, 4.5vw, 56px) var(--pad);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.recent-card:last-child { border-right: none; }

.recent-card h3 {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.recent-card p {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--gray);
  max-width: 52ch;
}

.text-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.offstage { border-top: 1px solid var(--line); }

.off-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
}

.off-card {
  padding: clamp(32px, 4.5vw, 56px) var(--pad);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.off-grid .off-card:nth-child(2n) { border-right: none; }

.off-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--blue);
  display: block;
  margin-bottom: 14px;
}

.off-card h3 {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.off-card p {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--gray);
  max-width: 48ch;
}

/* ---------- audio players (case study) ---------- */

.audio-list { display: grid; gap: 14px; }

.audio-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  flex-wrap: wrap;
}

.audio-row .meta { flex: 1 1 200px; }

.audio-row .t {
  font-weight: 600;
  font-size: 16px;
  display: block;
}

.audio-row .s {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-light);
}

.audio-row audio { flex: 2 1 320px; height: 40px; width: 100%; }

.audio-note {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--gray);
  line-height: 1.8;
}

/* ---------- footer ---------- */

footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(56px, 8vw, 96px) var(--pad) 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-id { display: flex; flex-direction: column; gap: 16px; }

.footer-id .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
}

.footer-id .brand .mark {
  width: 24px;
  height: 24px;
  background: var(--blue);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

.footer-id p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-light);
  max-width: 34ch;
}

.footer-col .head {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  padding: 6px 0;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s, transform 0.2s;
}

.footer-col a:hover { color: #8b9aff; transform: translateX(4px); }

.footer-base {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.4);
}

/* ---------- reveal ---------- */

.reveal {
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

html.js .reveal.in,
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .project { grid-template-columns: 1fr; }
  .project-media { position: relative; top: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .tile, .photo-tile { width: 280px; height: 190px; }
  .off-grid { grid-template-columns: 1fr; }
  .off-card { border-right: none !important; }
  .recent-grid { grid-template-columns: 1fr; }
  .recent-card { border-right: none; }
  .nav-links .btn.ghost { display: none; }
}

/* ---------- reduced motion ---------- */

@media (max-width: 400px) {
  .nav-links .btn { white-space: nowrap; padding-inline: 10px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee.rtl, .marquee.ltr { animation: none; }
  .collage { overflow-x: auto; overflow-y: hidden; }
  .reveal,
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .intro,
  html.js .intro { display: none; }
  .intro-mark { animation: none; }
}