/* ==================================================================
   EDUARDO MITELMAN — APPROACH (/about/)
   Built from DESIGN.md: EB Garamond, single weight, high-contrast
   black/white panels that invert per section, flat + hard-edged
   (0 radius, no shadow). Header chrome matches the archive (Inter).
   ================================================================== */

/* ---------- Tokens (from DESIGN.md) ---------- */
:root {
  --black:        #000000;
  --white:        #ffffff;
  --neutral:      #999999;
  --accent-blue:  #0000fe;
  --accent-red:   #ff4f23;
  --aux-dark:     #7d7d7d;   /* Apple system grey — aux on dark panels */
  --blend-ink:    #DFDEDC;   /* header/cursor difference tint (matches archive) */

  --serif: "EB Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --lh: 1.375;
  --tracking: -0.01em;

  /* spacing scale (12 / 24 / 48 / 128) */
  --pad-sm: 12px;
  --pad-md: 24px;
  --pad-lg: 48px;
  --pad-xl: 128px;
  --gap:    12px;

  --header-h: 120px;
  --maxw: 1200px;

  /* easings (DESIGN.md Penner set) */
  --ease-out-expo:    cubic-bezier(0.19, 1, 0.22, 1);
  --ease-inout-quint: cubic-bezier(0.86, 0, 0.07, 1);

  --t-med:  300ms;
  --t-slow: 500ms;
  --t-cine: 900ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scrollbar-width: thin;
}

body {
  background: var(--white);
  color: var(--black);
  font: 400 16px/var(--lh) var(--serif);
  letter-spacing: var(--tracking);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: var(--black); color: var(--white); }

:focus-visible { outline: 1px solid currentColor; outline-offset: 0.3rem; }

@media (hover: hover) and (pointer: fine) {
  body, a { cursor: none; }
}

/* ==================================================================
   HEADER — fixed, difference-blended so it reads on any panel
   ================================================================== */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-md) 0 32px;
  mix-blend-mode: difference;
  color: var(--blend-ink);
}

.logo {
  font: 500 13px/1 var(--sans);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav { display: flex; gap: 32px; }

.nav a {
  position: relative;
  font: 400 12px/1 var(--sans);
  letter-spacing: 0.08em;
  padding: 4px 0;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-slow) var(--ease-out-expo);
}
.nav a:hover::after,
.nav a.is-active::after { transform: scaleX(1); transform-origin: left; }

.header-back {
  display: none;
  font: 400 12px/1 var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* entrance for header items */
.logo, .nav a, .header-back {
  opacity: 0;
  transform: translate3d(0, -12px, 0);
  transition: opacity var(--t-cine) var(--ease-out-expo) var(--d, 0ms),
              transform var(--t-cine) var(--ease-out-expo) var(--d, 0ms);
}
.is-loaded .logo,
.is-loaded .nav a,
.is-loaded .header-back { opacity: 1; transform: none; }

/* ==================================================================
   PANELS — full-height inverting sections
   ================================================================== */
.panel {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: calc(var(--header-h) + var(--pad-lg)) var(--pad-lg) var(--pad-xl);
}
.panel--light { background: var(--white); color: var(--black); }
.panel--dark  { background: var(--black); color: var(--white); }

.panel-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
}

/* ---------- Hero ---------- */
.eyebrow {
  font: 500 13px/1 var(--sans);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neutral);
  margin-bottom: var(--pad-md);
}

.hero-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(40px, 8vw, 88px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  max-width: 16ch;
}

.hero-lede {
  margin-top: var(--pad-lg);
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: var(--lh);
  max-width: 52ch;
  color: var(--aux-dark);
}

/* ---------- Method blocks ---------- */
.method-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--pad-lg);
  align-items: start;
}

.method-rail { display: flex; flex-direction: column; gap: var(--pad-md); }

.counter {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
  color: var(--neutral);
}
.panel--dark .counter { color: var(--aux-dark); }

.method-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(30px, 3.6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.method-body {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.5;
  max-width: 46ch;
}
.method-body p + p { margin-top: var(--pad-md); }

/* ---------- Closing CTA ---------- */
.cta-inner { text-align: center; }

.cta-link {
  position: relative;
  display: inline-block;
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(36px, 7vw, 80px);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.cta-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0.08em;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-cine) var(--ease-out-expo);
}
.cta-link:hover::after { transform: scaleX(1); transform-origin: left; }

/* ==================================================================
   FOOTER — matches the archive
   ================================================================== */
.footer {
  background: var(--white);
  color: var(--black);
  border-top: 1px solid rgba(0, 0, 0, 0.14);
  padding: 12rem 3.2rem 2.4rem;
}

.footer-statement {
  max-width: 72rem;
  margin: 0 auto 9.6rem;
  text-align: center;
  font: italic 400 clamp(24px, 4vw, 40px)/1.3 var(--serif);
  letter-spacing: -0.01em;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 2.4rem;
  align-items: end;
  padding-top: 2.4rem;
  border-top: 1px solid rgba(0, 0, 0, 0.14);
}

.footer-list { display: flex; flex-direction: column; gap: 0.8rem; }

.footer-list a {
  position: relative;
  display: inline-block;
  width: fit-content;
  font: 400 12px/1.6 var(--sans);
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.56);
  transition: color var(--t-med) ease;
}
.footer-list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-slow) var(--ease-out-expo);
}
.footer-list a:hover { color: var(--black); }
.footer-list a:hover::after { transform: scaleX(1); transform-origin: left; }

.footer-copy {
  font: 400 11px/1.6 var(--sans);
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.56);
  text-align: right;
}

/* ==================================================================
   VEIL (page transition) + CURSOR
   ================================================================== */
.veil {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #F9F8F6;
  transform: translate3d(0, 101%, 0);
  pointer-events: none;
}
.veil.is-in {
  transform: translate3d(0, 0, 0);
  transition: transform var(--t-cine) var(--ease-inout-quint);
}

.cursor {
  position: fixed;
  left: 0; top: 0;
  z-index: 9999;
  width: 12px; height: 12px;
  border-radius: 100%;
  background: var(--blend-ink);
  mix-blend-mode: difference;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-med) ease;
  will-change: transform;
}
.is-loaded .cursor { opacity: 1; }

@media (hover: none), (pointer: coarse) {
  .cursor { display: none; }
}

/* ==================================================================
   SCROLL REVEAL
   ================================================================== */
.reveal {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity var(--t-cine) var(--ease-out-expo) var(--d, 0ms),
              transform var(--t-cine) var(--ease-out-expo) var(--d, 0ms);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ==================================================================
   RESPONSIVE — single mental breakpoint, mobile chrome swap
   ================================================================== */
@media (max-width: 743px) {
  .header { padding: 0 20px; height: 88px; }
  .nav { display: none; }
  .header-back { display: inline-block; }

  .panel { padding: calc(88px + var(--pad-lg)) var(--pad-md) var(--pad-xl); }

  .method-inner { grid-template-columns: 1fr; gap: var(--pad-md); }
  .method-rail { gap: var(--pad-sm); }

  .footer { padding: 8rem 2rem 2.4rem; }
  .footer-statement { margin-bottom: 6.4rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-copy { grid-column: 1 / -1; text-align: left; }
}

/* ==================================================================
   REDUCED MOTION
   ================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  body, a { cursor: auto; }
  .cursor { display: none; }
}