/* Waleed Khan Agency — shared styles (v3)
   Pure greyscale. Serif headlines, sans body. Each pillar owns one shade. */

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --paper: #f4f4f2;
  --soft: #5a5a56;
  --line: #d6d6d2;

  --strategy: #ffffff;
  --design: #c8c8c8;
  --marketing: #8c8c8c;
  --technology: #3a3a3a;

  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-body: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;

  --gutter: clamp(1.25rem, 5vw, 3rem);
  --max: 76rem;
  --header: 4.25rem;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--black);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 0.2em; }
p { margin: 0; }
:focus-visible { outline: 3px solid #8c8c8c; outline-offset: 3px; }
[id] { scroll-margin-top: var(--header); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 0.75rem; top: -4rem; z-index: 100;
  background: var(--white); color: var(--black); padding: 0.6rem 1rem; border-radius: 0.5rem;
}
.skip-link:focus { top: 0.75rem; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: clamp(2.5rem, 6vw, 4.75rem); }
h2 em, h1 em { font-style: italic; color: var(--marketing); }
h3 { font-size: 2rem; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--marketing);
  margin-bottom: 1.25rem;
}

.section-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 10, 0.96);
  backdrop-filter: blur(10px);
  color: var(--white);
  height: var(--header);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.site-header .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.wordmark { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; font-weight: 600; font-size: 1.05rem; white-space: nowrap; }
.dots { display: inline-flex; gap: 4px; }
.dots i { width: 8px; height: 8px; border-radius: 50%; display: block; }
.dots i:nth-child(1) { background: #ffffff; }
.dots i:nth-child(2) { background: #d0d0d0; }
.dots i:nth-child(3) { background: #a0a0a0; }
.dots i:nth-child(4) { background: #777777; }

.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav a { text-decoration: none; font-size: 0.98rem; }
.nav a:not(.button):hover { text-decoration: underline; }

/* ---------- buttons ---------- */
.button {
  display: inline-block;
  background: var(--white); color: var(--black);
  border: 1.5px solid var(--white);
  border-radius: 999px;
  padding: 0.85rem 1.6rem;
  font-weight: 600; font-size: 1rem; text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.nav .button { padding: 0.6rem 1.25rem; font-weight: 500; }
.button:hover { background: #d0d0d0; border-color: #d0d0d0; }
.button.outline { background: transparent; color: var(--white); }
.button.outline:hover { background: var(--white); color: var(--black); }
.button.dark { background: var(--black); color: var(--white); border-color: var(--black); }
.button.dark:hover { background: var(--soft); border-color: var(--soft); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(ellipse at 75% 35%, #1d1d1d 0%, var(--black) 60%);
  color: var(--white);
  overflow: hidden;
  padding-block: clamp(3rem, 7vw, 6rem) clamp(3.5rem, 7vw, 6rem);
  min-height: min(44rem, calc(100svh - var(--header)));
  display: flex; align-items: center;
}
.hero .wrap { position: relative; z-index: 2; }
.hero .eyebrow { color: #a0a0a0; }
.hero h1 { font-size: clamp(3.4rem, 9.5vw, 8.25rem); line-height: 0.93; letter-spacing: -0.02em; }
.hero h1 span { display: block; }
.hero .l1 { color: #ffffff; }
.hero .l2 { color: #d0d0d0; }
.hero .l3 { color: #a0a0a0; }
.hero .l4 { color: #777777; }
.hero .lead { margin-top: clamp(1.5rem, 3vw, 2.25rem); max-width: 30rem; color: #cfcfcb; font-size: 1.15rem; }
.hero .actions { margin-top: 1.75rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* floating glass shapes */
.stage {
  position: absolute; z-index: 1; inset: 0 0 0 38%;
  perspective: 1100px;
  pointer-events: none;
}
.fl { position: absolute; display: block; }
.gem {
  display: block; position: relative;
  width: var(--s); height: var(--s);
  transform-style: preserve-3d;
  transform: rotateX(-28deg) rotateY(30deg) rotateZ(14deg);
}
.gem i {
  position: absolute; inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.42);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.02) 60%, rgba(255, 255, 255, 0.1));
  box-shadow: inset 0 0 24px rgba(255, 255, 255, 0.06);
}
.gem i:nth-child(1) { transform: translateZ(calc(var(--s) / 2)); }
.gem i:nth-child(2) { transform: rotateY(180deg) translateZ(calc(var(--s) / 2)); }
.gem i:nth-child(3) { transform: rotateY(90deg) translateZ(calc(var(--s) / 2)); }
.gem i:nth-child(4) { transform: rotateY(-90deg) translateZ(calc(var(--s) / 2)); }
.gem i:nth-child(5) { transform: rotateX(90deg) translateZ(calc(var(--s) / 2)); }
.gem i:nth-child(6) { transform: rotateX(-90deg) translateZ(calc(var(--s) / 2)); }

.g-big  { --s: clamp(11rem, 26vw, 22rem); left: 22%; top: 18%; }
.g-core { --s: clamp(4.5rem, 10vw, 8.5rem); left: calc(22% + clamp(3.2rem, 8vw, 6.8rem)); top: calc(18% + clamp(3.2rem, 8vw, 6.8rem)); }
.g-core .gem i { background: linear-gradient(135deg, rgba(255,255,255,.55), rgba(255,255,255,.1)); }
.g-a { --s: clamp(2.2rem, 4vw, 3.6rem); left: 4%;  top: 12%; opacity: 0.8; }
.g-b { --s: clamp(1.6rem, 3vw, 2.6rem); left: 80%; top: 14%; opacity: 0.7; }
.g-c { --s: clamp(2.6rem, 5vw, 4.4rem); left: 76%; top: 66%; opacity: 0.85; }
.g-d { --s: clamp(1.4rem, 2.6vw, 2.2rem); left: 10%; top: 78%; opacity: 0.6; }

@media (prefers-reduced-motion: no-preference) {
  .gem { animation: spin 28s linear infinite; }
  .g-core .gem { animation-duration: 18s; animation-direction: reverse; }
  .g-a .gem { animation-duration: 16s; }
  .g-b .gem { animation-duration: 22s; animation-direction: reverse; }
  .g-c .gem { animation-duration: 20s; }
  .g-d .gem { animation-duration: 14s; animation-direction: reverse; }
  .fl { animation: bob 9s ease-in-out infinite; }
  .g-core { animation-duration: 7s; }
  .g-a { animation-duration: 11s; }
  .g-b { animation-duration: 8s; animation-delay: -3s; }
  .g-c { animation-duration: 12s; animation-delay: -5s; }
  .g-d { animation-duration: 10s; animation-delay: -2s; }
  .hero h1 span { animation: rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .hero .l2 { animation-delay: 0.12s; }
  .hero .l3 { animation-delay: 0.24s; }
  .hero .l4 { animation-delay: 0.36s; }
  .reveal { opacity: 0; transform: translateY(1.5rem); transition: opacity 0.8s ease, transform 0.8s ease; }
  .reveal.in { opacity: 1; transform: none; }
}
@keyframes spin {
  from { transform: rotateX(-28deg) rotateY(0deg) rotateZ(14deg); }
  to   { transform: rotateX(-28deg) rotateY(360deg) rotateZ(14deg); }
}
@keyframes bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 -1.1rem; } }
@keyframes rise { from { opacity: 0; transform: translateY(1.2rem); } to { opacity: 1; transform: none; } }

/* ---------- works slider ---------- */
.works { background: var(--black); color: var(--white); padding-block: clamp(3.5rem, 7vw, 6rem); overflow: hidden; }
.works .eyebrow { color: #a0a0a0; }
.slider { overflow: hidden; }
.track { display: flex; width: max-content; padding-left: var(--gutter); }
.slider.is-animated .track { padding-left: 0; }

@media (prefers-reduced-motion: no-preference) {
  .slider.is-animated .track { animation: drift 60s linear infinite; }
  .slider.is-animated:hover .track { animation-play-state: paused; }
}
@keyframes drift { to { transform: translateX(-50%); } }

.card {
  flex: none;
  width: clamp(14rem, 22vw, 19rem);
  margin-right: clamp(0.75rem, 1.6vw, 1.25rem);
  border-radius: 0.4rem;
  overflow: hidden;
  background: var(--c);
  color: var(--on);
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: flex; flex-direction: column;
}
.card .art { width: 100%; aspect-ratio: 4 / 4.6; padding: 1.5rem; }
.card figcaption {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  padding: 0.9rem 1.1rem 1.1rem;
  font-weight: 600; font-size: 0.98rem;
}
.card .pill {
  border: 1.5px solid currentColor; border-radius: 999px;
  padding: 0.1rem 0.6rem; font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; order: 2;
}

.c-strategy  { --c: var(--strategy);  --on: var(--black); }
.c-design    { --c: var(--design);    --on: var(--black); }
.c-marketing { --c: var(--marketing); --on: var(--black); }
.c-technology{ --c: var(--technology);--on: var(--white); }

/* ---------- generic sections ---------- */
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section.light { background: var(--paper); }
.section.white { background: var(--white); }
.section.black { background: var(--black); color: var(--white); }
.section.black .eyebrow { color: #a0a0a0; }

/* capabilities */
.caps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.25rem, 2.5vw, 2.25rem); }
.cap { border-top: 1px solid var(--black); padding-top: 1.5rem; }
.swatch { display: block; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 1px solid var(--black); margin-bottom: 1.5rem; }
.s-strategy { background: var(--strategy); }
.s-design { background: var(--design); }
.s-marketing { background: var(--marketing); }
.s-technology { background: var(--technology); }
.cap h3 { font-size: 2.4rem; margin-bottom: 0.75rem; }
.cap > p { color: var(--soft); margin-bottom: 1.5rem; max-width: 22ch; }
.cap ul { list-style: none; margin: 0; padding: 0; }
.cap li { padding: 0.65rem 0; border-top: 1px solid var(--line); font-size: 0.98rem; }
.small-tag {
  display: inline-block; margin-left: 0.4rem;
  border: 1.5px solid var(--black); border-radius: 999px;
  padding: 0 0.6rem; font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.small-tag:hover { background: var(--black); color: var(--white); }

/* why */
.together { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 3rem); margin: 0; }
.together > div { border-top: 1px solid var(--black); padding-top: 1.25rem; }
.together dt { font-family: var(--font-display); font-size: 1.9rem; line-height: 1.05; margin-bottom: 0.75rem; }
.together dd { margin: 0; color: var(--soft); }

/* process */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: clamp(1rem, 2vw, 1.75rem); counter-reset: step; }
.steps li { counter-increment: step; border-top: 3px solid var(--k, #fff); padding-top: 1rem; }
.steps li::before {
  content: counter(step);
  display: block; font-family: var(--font-display); font-size: 3.5rem; line-height: 1; color: var(--k, #fff); margin-bottom: 0.75rem;
}
.steps li:nth-child(1) { --k: #777777; }
.steps li:nth-child(2) { --k: #a0a0a0; }
.steps li:nth-child(3) { --k: #d0d0d0; }
.steps li:nth-child(4) { --k: #eeeeee; }
.steps li:nth-child(5) { --k: #ffffff; }
.steps h3 { font-size: 1.7rem; margin-bottom: 0.4rem; }
.steps p { color: #bdbdb8; font-size: 0.98rem; line-height: 1.5; }

/* contact */
.contact h2 { font-size: clamp(3rem, 9vw, 7.5rem); line-height: 0.95; max-width: 12ch; }
.contact .email {
  display: inline-block; margin-top: 2rem;
  font-family: var(--font-display); font-size: clamp(1.3rem, 6vw, 3.25rem); overflow-wrap: anywhere;
  text-decoration-thickness: 2px;
}
.contact .note { margin-top: 1.25rem; max-width: 36ch; color: var(--soft); }
.contact .actions { margin-top: 1.75rem; }

/* ---------- Khan Labs page ---------- */
.page-hero { background: var(--black); color: var(--white); padding-block: clamp(4rem, 10vw, 8rem); }
.page-hero h1 { font-size: clamp(4rem, 13vw, 10rem); line-height: 0.92; color: var(--white); }
.page-hero .lead { margin-top: 1.5rem; font-size: clamp(1.15rem, 2.2vw, 1.4rem); color: #cfcfcb; max-width: 40ch; }

.apps { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.app { border: 1.5px solid var(--black); border-radius: 0.5rem; padding: 1.5rem; background: var(--white); }
.app.placeholder { border-style: dashed; background: transparent; }
.app .tag {
  display: inline-block; margin-bottom: 1rem;
  border: 1.5px solid var(--black); border-radius: 999px;
  padding: 0 0.6rem; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
}
.app h3 { margin-bottom: 0.5rem; }
.app p { color: var(--soft); }
.support { max-width: 52ch; }
.support h2 { margin-bottom: 1rem; }
.support p + p { margin-top: 0.75rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--black); color: #bdbdb8; padding-block: 2.5rem; font-size: 0.95rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; }
.site-footer nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-footer a { color: inherit; }

/* ---------- responsive ---------- */
@media (max-width: 62rem) {
  .caps { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .stage { inset: 0 0 0 30%; opacity: 0.8; }
}
@media (max-width: 46rem) {
  .nav a:not(.button) { display: none; }
  .wordmark { font-size: 1rem; }
  .nav .button { padding: 0.5rem 0.95rem; font-size: 0.95rem; }
  .caps, .together, .steps { grid-template-columns: 1fr; }
  .hero { min-height: 0; align-items: flex-start; }
  .stage { inset: 0; opacity: 0.45; }
  .g-big { left: 38%; top: 30%; }
  .g-core { left: calc(38% + 3.2rem); top: calc(30% + 3.2rem); }
}
@media (max-width: 30rem) {
  .wordmark .dots { display: none; }
}