/* ============================================================
   SARAH A. ISKANDER
   Grounded futurism. Two-tone charcoal / cool grey. Switzer + Geist Mono.
   ============================================================ */

:root {
  /* dark surfaces */
  --char:      oklch(0.205 0.006 250);
  --char-2:    oklch(0.255 0.008 250);
  --char-line: oklch(0.34 0.008 250);
  /* light surfaces */
  --mist:      oklch(0.915 0.003 250);
  --mist-2:    oklch(0.955 0.002 250);
  --mist-line: oklch(0.80 0.006 250);
  /* ink */
  --ink:       oklch(0.235 0.01 255);
  --ink-dim:   oklch(0.47 0.008 255);
  --paper:     oklch(0.965 0.003 250);
  --paper-dim: oklch(0.74 0.006 250);
  /* restrained signal */
  --signal:    oklch(0.76 0.12 64);

  /* per-panel theme vars (set by .panel--*) */
  --bg: var(--char);
  --fg: var(--paper);
  --fg-dim: var(--paper-dim);
  --line: var(--char-line);
  --chip-bg: oklch(0.20 0.006 250 / 0.78);

  --shell: min(1240px, 90vw);
  --gut: clamp(1.25rem, 4vw, 3.5rem);

  --f-sans: "Switzer", system-ui, -apple-system, sans-serif;
  --f-mono: "Geist Mono", ui-monospace, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 5.5rem; }

body {
  background: var(--char);
  color: var(--paper);
  font-family: var(--f-sans);
  font-size: clamp(1rem, 0.96rem + 0.22vw, 1.125rem);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--paper); }

/* ---------- type devices ---------- */
.mono {
  font-family: var(--f-mono);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.7rem;
}
.eyebrow {
  font-family: var(--f-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: clamp(0.66rem, 0.6rem + 0.2vw, 0.74rem);
  color: var(--fg-dim);
}
.sec-head {
  max-width: 40rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}
.sec-head .eyebrow { margin-bottom: clamp(1rem, 2vw, 1.6rem); }
.sec-title {
  font-weight: 600;
  font-size: clamp(1.55rem, 1rem + 2.8vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

/* ============================================================
   PANELS (two-tone)
   ============================================================ */
.panel {
  position: relative;
  padding-block: clamp(4.5rem, 10vh, 8.5rem);
}
.panel > * { width: var(--shell); margin-inline: auto; }
.panel--dark {
  --bg: var(--char); --fg: var(--paper); --fg-dim: var(--paper-dim);
  --line: var(--char-line); --chip-bg: oklch(0.18 0.006 250 / 0.80);
  background: var(--char); color: var(--paper);
}
.panel--light {
  --bg: var(--mist); --fg: var(--ink); --fg-dim: var(--ink-dim);
  --line: var(--mist-line); --chip-bg: oklch(0.20 0.006 250 / 0.82);
  background: var(--mist); color: var(--ink);
}
/* soft depth on dark panels (no flat black) */
.panel--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 80% at 50% -10%, oklch(0.30 0.012 255 / 0.55), transparent 60%);
}
.panel--dark > * { position: relative; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.75em 1.4em;
  border-radius: 100px;
  transition: transform 0.4s var(--ease), background 0.3s, color 0.3s, border-color 0.3s;
}
.btn span { transition: transform 0.4s var(--ease); }
.btn:hover span { transform: translate(2px, 2px); }
.btn--ghost {
  border: 1px solid var(--line);
  color: var(--fg);
}
.btn--ghost:hover { border-color: var(--fg); }
.btn--solid {
  background: var(--paper);
  color: var(--char);
  font-size: clamp(0.95rem, 0.9rem + 0.4vw, 1.15rem);
  padding: 0.85em 1.6em;
}
.btn--solid:hover { transform: translateY(-2px); }

/* ============================================================
   LAUNCH
   ============================================================ */
.launch {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--char);
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: clamp(1.4rem, 3.5vw, 2.6rem);
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
.launch::before {
  content: "";
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(110% 70% at 50% 40%, oklch(0.30 0.012 255 / 0.5), transparent 60%);
}
.launch.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.launch__top {
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.66rem;
  color: var(--paper-dim);
  position: relative;
}
.launch__stage { display: grid; place-items: center; position: relative; }
.launch__word {
  font-weight: 600;
  font-size: clamp(2.4rem, 9vw, 7rem);
  letter-spacing: -0.02em;
  color: var(--paper);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
}
.launch__name {
  position: absolute;
  font-weight: 600;
  font-size: clamp(2.4rem, 9vw, 7rem);
  letter-spacing: -0.02em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s var(--ease), transform 0.7s var(--ease);
}
.launch__name span { color: var(--paper-dim); }
.launch.is-name .launch__word { opacity: 0; }
.launch.is-name .launch__name { opacity: 1; transform: none; }
.launch__bar { height: 1px; background: var(--char-line); position: relative; overflow: hidden; }
.launch__bar i { position: absolute; inset: 0 100% 0 0; background: var(--paper); transition: inset 0.1s linear; }

/* ============================================================
   HUD
   ============================================================ */
.hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(0.8rem, 1.6vw, 1.15rem) var(--gut);
  background: oklch(0.205 0.006 250 / 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(1 0 0 / 0.06);
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.hud.is-on { opacity: 1; transform: none; }
/* mobile idle auto-hide: JS toggles this only at <=900px */
.hud.hud--hidden { opacity: 0; transform: translateY(-100%); pointer-events: none; }
.hud__id {
  display: flex; align-items: center; gap: 0.6em;
  font-weight: 600; font-size: 0.85rem; letter-spacing: -0.01em;
  color: var(--paper);
}
.hud__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 var(--signal);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 oklch(0.76 0.12 64 / 0.55); }
  70% { box-shadow: 0 0 0 6px oklch(0.76 0.12 64 / 0); }
  100% { box-shadow: 0 0 0 0 oklch(0.76 0.12 64 / 0); }
}
.hud__nav {
  display: flex;
  gap: clamp(1.2rem, 2.6vw, 2.4rem);
  font-size: 0.85rem;
}
.hud__nav a { color: var(--paper-dim); transition: color 0.25s; }
.hud__nav a:hover { color: var(--paper); }
.hud__cta {
  font-family: var(--f-mono); text-transform: uppercase;
  letter-spacing: 0.12em; font-size: 0.68rem; color: var(--paper);
}
.hud__sys {
  font-family: var(--f-mono); text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 0.66rem; color: var(--paper-dim);
}

/* ============================================================
   MEDIA + reveal (clean clip wipe + develop-in grade)
   ============================================================ */
.media { position: relative; overflow: hidden; background: var(--char-2); }
.media img {
  width: 100%; height: 100%; object-fit: cover;
  clip-path: inset(0 0 100% 0);
  transform: scale(1.07);
  filter: saturate(0.55) brightness(0.82) contrast(1.05);
  transition: clip-path 1.1s var(--ease), transform 1.5s var(--ease), filter 1.3s var(--ease);
}
.media.in img { clip-path: inset(0 0 0 0); transform: scale(1); filter: none; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* image label chip (Palantir-style) */
.chip {
  position: absolute;
  top: 14px; left: 14px;
  max-width: min(72%, 22rem);
  background: var(--chip-bg);
  backdrop-filter: blur(6px);
  border: 1px solid oklch(1 0 0 / 0.1);
  padding: 0.7rem 0.9rem;
  display: flex; flex-direction: column; gap: 0.25rem;
  color: var(--paper);
}
.chip__ey { font-family: var(--f-mono); text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.6rem; color: var(--paper-dim); }
.chip__t { font-weight: 500; font-size: 0.92rem; line-height: 1.25; letter-spacing: -0.01em; }
/* hero pod caption: sit at the bottom so it never covers her (centered) face */
.hero__media .chip { top: auto; bottom: 14px; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding-top: clamp(7rem, 16vh, 11rem); }
.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.hero__text .eyebrow { margin-bottom: clamp(1.4rem, 3vw, 2rem); }
.hero__name {
  font-weight: 600;
  font-size: clamp(3rem, 1rem + 8vw, 7rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  margin-bottom: clamp(1.5rem, 3vw, 2.2rem);
}
.hero__thesis {
  font-size: clamp(1.15rem, 1rem + 0.9vw, 1.6rem);
  line-height: 1.4;
  color: var(--paper-dim);
  max-width: 28ch;
  margin-bottom: clamp(2rem, 4vw, 2.8rem);
}
.hero__media { aspect-ratio: 4 / 3; }
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: clamp(1.6rem, 3vw, 2.4rem);
  border-top: 1px solid var(--line);
}
.hero__stats div { display: flex; flex-direction: column; gap: 0.4rem; }
.hero__stats b {
  font-weight: 600;
  font-size: clamp(1.7rem, 1.2rem + 1.8vw, 2.8rem);
  letter-spacing: -0.02em;
  line-height: 1;
}
.hero__stats span {
  font-family: var(--f-mono); text-transform: uppercase;
  letter-spacing: 0.1em; font-size: 0.62rem; color: var(--paper-dim);
}

/* ============================================================
   PROFILE
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.about__portrait { aspect-ratio: 4 / 5; }
.about__portrait img { object-position: 50% 10%; }
.about__body p { max-width: 60ch; color: var(--fg-dim); margin-bottom: 1.2rem; }
.about__body p:last-of-type { margin-bottom: 0; }
.about__facts {
  display: flex; flex-wrap: wrap; gap: clamp(1.5rem, 4vw, 3rem);
  margin-top: clamp(2rem, 4vw, 2.8rem);
  padding-top: clamp(1.5rem, 3vw, 2rem);
  border-top: 1px solid var(--line);
}
.about__facts dt {
  font-family: var(--f-mono); text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 0.6rem; color: var(--fg-dim);
  margin-bottom: 0.4rem;
}
.about__facts dd { font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; }

/* ============================================================
   IMPACT
   ============================================================ */
.reel { aspect-ratio: auto; background: none; overflow: visible; margin-bottom: clamp(3rem, 6vw, 5rem); }
.reel__frame {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  background: var(--char-2); border: 1px solid var(--line);
}
.reel__frame video { width: 100%; height: 100%; object-fit: cover; }
.reel__play {
  position: absolute; inset: 0; margin: auto;
  width: clamp(62px, 8vw, 88px); height: clamp(62px, 8vw, 88px);
  border-radius: 50%; border: 1px solid oklch(1 0 0 / 0.5);
  background: oklch(0.18 0.006 250 / 0.45); backdrop-filter: blur(6px);
  color: var(--paper); font-size: clamp(1.1rem, 2vw, 1.6rem);
  display: grid; place-items: center; padding-left: 0.18em; cursor: pointer;
  transition: transform 0.4s var(--ease), background 0.3s, color 0.3s;
}
.reel__play:hover { transform: scale(1.07); background: var(--paper); color: var(--char); }
.reel.is-playing .reel__play { opacity: 0; pointer-events: none; }
.reel__tag {
  position: absolute; top: 12px; right: 14px;
  font-family: var(--f-mono); text-transform: uppercase;
  letter-spacing: 0.16em; font-size: 0.6rem; color: var(--paper);
  display: flex; align-items: center; gap: 0.4em;
}
.reel__tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); }
.reel figcaption { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1rem; color: var(--fg-dim); font-size: 0.9rem; }

.caps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.caps li { background: var(--char); padding: clamp(1.5rem, 3vw, 2.3rem); transition: background 0.35s var(--ease); }
.caps li:hover { background: var(--char-2); }
.caps__n { color: var(--fg-dim); display: block; margin-bottom: 1.2rem; }
.caps h3 { font-weight: 600; font-size: clamp(1.1rem, 1rem + 0.5vw, 1.4rem); letter-spacing: -0.015em; margin-bottom: 0.55rem; }
.caps p { color: var(--paper-dim); font-size: 0.92rem; }

/* ============================================================
   GALLERY
   ============================================================ */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(0.6rem, 1.4vw, 1rem);
}
.shot { grid-column: span 2; aspect-ratio: 4 / 5; }
.shot--banner { grid-column: 1 / -1; aspect-ratio: 24 / 7; }
.shot--wide { grid-column: 1 / -1; aspect-ratio: 16 / 9; }
.shot img { transition: clip-path 1.1s var(--ease), transform 0.8s var(--ease), filter 1.3s var(--ease); }
.shot:hover img { transform: scale(1.03); }
/* keep captions clear of faces on portrait tiles */
.shot:not(.shot--banner) .chip { top: auto; bottom: 14px; }

/* ============================================================
   TRAJECTORY
   ============================================================ */
.log__list { list-style: none; border-top: 1px solid var(--line); }
.log__item {
  display: grid;
  grid-template-columns: 4rem 13rem 1fr;
  gap: clamp(1rem, 3vw, 3rem);
  padding-block: clamp(1.6rem, 3.5vw, 2.6rem);
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  transition: background 0.4s var(--ease);
}
.log__item:hover { background: oklch(1 0 0 / 0.025); }
.log__phase { font-size: 1rem; color: var(--fg-dim); }
.log__item--now .log__phase { color: var(--char); background: var(--signal); padding: 0.15em 0.4em; border-radius: 4px; }
.log__when { color: var(--fg-dim); }
.log__role { font-weight: 600; font-size: clamp(1.2rem, 1rem + 1vw, 1.85rem); letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 0.55rem; }
.log__desc { color: var(--paper-dim); max-width: 62ch; }

/* ============================================================
   EVIDENCE
   ============================================================ */
.evidence__list { list-style: none; border-top: 1px solid var(--line); max-width: 62rem; }
.evidence__list li {
  display: flex; align-items: baseline; gap: 1.3rem;
  padding-block: clamp(0.9rem, 2vw, 1.25rem);
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  font-size: clamp(1.05rem, 0.9rem + 0.8vw, 1.5rem);
  letter-spacing: -0.02em;
  transition: padding-left 0.4s var(--ease);
}
.evidence__list li:hover { padding-left: 0.7rem; }
.evidence__list .mono { color: var(--fg-dim); font-size: 0.78rem; width: 3ch; flex-shrink: 0; }
.affil { margin-top: clamp(3rem, 6vw, 5rem); }
.affil__label { color: var(--fg-dim); margin-bottom: 1.4rem; }
.affil__logos { display: flex; align-items: center; flex-wrap: wrap; gap: clamp(2rem, 5vw, 3.5rem); }
.affil__logos img {
  height: clamp(26px, 3.5vw, 38px); width: auto; object-fit: contain;
  filter: grayscale(1) brightness(0) opacity(0.5);
  transition: filter 0.3s;
}
.affil__logos img:hover { filter: grayscale(1) brightness(0) opacity(0.9); }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { padding-block: clamp(5rem, 13vh, 10rem); }
.contact .eyebrow { margin-bottom: clamp(1.5rem, 3vw, 2.2rem); }
.contact__head {
  font-weight: 600;
  font-size: clamp(2.8rem, 1rem + 10vw, 8.5rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.contact__links { display: flex; flex-wrap: wrap; align-items: center; gap: clamp(1.5rem, 4vw, 2.5rem); }
.contact__mail {
  font-family: var(--f-mono); font-size: 0.85rem; letter-spacing: 0.04em;
  color: var(--paper-dim); border-bottom: 1px solid var(--char-line); padding-bottom: 0.2em;
  transition: color 0.3s, border-color 0.3s;
}
.contact__mail:hover { color: var(--paper); border-color: var(--paper); }

/* ============================================================
   FOOTER
   ============================================================ */
.foot {
  width: var(--shell); margin-inline: auto;
  border-top: 1px solid var(--char-line);
  padding-block: clamp(2rem, 4vw, 3rem);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.foot .mono { color: var(--paper-dim); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero__media { aspect-ratio: 16 / 10; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
  .about__grid { grid-template-columns: 1fr; }
  .about__portrait { aspect-ratio: 16 / 11; max-width: 24rem; }
  .gallery__grid { grid-template-columns: repeat(2, 1fr); }
  .shot { grid-column: span 1; aspect-ratio: 4 / 5; }
  .shot--banner { grid-column: 1 / -1; aspect-ratio: 16 / 9; }
  .shot--wide { grid-column: 1 / -1; aspect-ratio: 16 / 9; }
  .log__item { grid-template-columns: 3rem 1fr; column-gap: 1.25rem; }
  .log__when { grid-column: 2; margin-bottom: 0.5rem; }
  .log__main { grid-column: 2; }
  .hud { flex-wrap: wrap; }
  .hud__cta { order: 2; }
  .hud__nav {
    order: 3;
    flex-basis: 100%;
    justify-content: center;
    gap: clamp(1.4rem, 7vw, 2.2rem);
    padding-top: 0.7rem;
    border-top: 1px solid oklch(1 0 0 / 0.06);
    font-size: 0.82rem;
  }
}
@media (max-width: 520px) {
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .gallery__grid { grid-template-columns: 1fr; }
  .contact__links { flex-direction: column; align-items: flex-start; }
  .foot { flex-direction: column; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto; }
  .launch { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .media img { clip-path: none !important; transform: none !important; filter: none !important; }
}