/* ============================================================
   BIG SESSIONS — brutalist coaching site
   Palette  : black · red · grey · off-white
   Type     : Anton (display) · IBM Plex Sans (body) · IBM Plex Mono (data)
   ============================================================ */

:root {
  --black:        #0A0A0A;
  --black-2:      #141414;
  --grey-1:       #1A1A1A;
  --grey-2:       #2A2A2A;
  --grey-3:       #4A4A4A;
  --grey-4:       #7A7A7A;
  --white:        #F2F2F2;
  --white-pure:   #FFFFFF;
  --red:          #E50914;
  --red-deep:     #B00710;

  --rule:         1px solid var(--white);
  --rule-thick:   2px solid var(--white);
  --rule-red:     2px solid var(--red);

  --font-display: 'Anton', 'Arial Narrow', sans-serif;
  --font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  --pad-x:        clamp(1.25rem, 4vw, 4.5rem);
  --pad-y:        clamp(2.5rem, 6vw, 6rem);

  --measure:      62ch;
}

* { box-sizing: border-box; }
*::selection { background: var(--red); color: var(--white-pure); }

html, body {
  margin: 0;
  padding: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  max-width: 100%;
}

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

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

/* ============================================================
   NAV
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 0.9rem var(--pad-x);
  background: var(--black);
  border-bottom: var(--rule);
}

.nav__mark { display: inline-flex; align-items: baseline; gap: 0.35rem; }
.mark__big {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.02em;
  color: var(--red);
  line-height: 1;
}
.mark__sessions {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1;
}

.nav__links {
  justify-self: center;
  display: flex;
  gap: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
}
.nav__links a {
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms, color 120ms;
}
.nav__links a:hover { color: var(--red); border-bottom-color: var(--red); }

.nav__ig {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--white);
}
.nav__ig:hover { background: var(--white); color: var(--black); }

/* ============================================================
   SLAB SHELL
   ============================================================ */

.slab {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--pad-y) + 4rem) var(--pad-x) var(--pad-y);
  border-bottom: var(--rule);
  display: flex;
  flex-direction: column;
}

.slab__meta {
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--grey-4);
  margin-bottom: 2.5rem;
}
.meta__num { color: var(--red); }
.meta__label { color: var(--white); }

.slab__h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 9vw, 8rem);
  line-height: 0.88;
  letter-spacing: -0.005em;
  margin: 0 0 1.5rem;
  text-transform: uppercase;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.1rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 2px solid var(--white);
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: background 140ms, color 140ms, border-color 140ms, transform 140ms;
}
.btn--primary {
  background: var(--red);
  border-color: var(--red);
  color: var(--white-pure);
}
.btn--primary:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn--ghost:hover {
  background: var(--white);
  color: var(--black);
}
.btn--xl {
  padding: 1.5rem 2.4rem;
  font-size: 0.92rem;
  letter-spacing: 0.22em;
}

/* ============================================================
   01 · HERO
   ============================================================ */

.hero { background: var(--black); }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: stretch;
  flex: 1;
  min-width: 0;
}

.hero__copy { min-width: 0; }

.hero__h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(4.5rem, 14.5vw, 13.5rem);
  line-height: 0.82;
  letter-spacing: -0.015em;
  margin: 0 0 2rem;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
}
.hero__h1 span:last-child { color: var(--red); }

.hero__sub {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.45;
  max-width: 48ch;
  margin: 0 0 2.5rem;
  color: var(--white);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero__ticker {
  position: relative;
  overflow: hidden;
  border-top: var(--rule);
  border-bottom: var(--rule);
  padding: 0.7rem 0;
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--grey-4);
}
.hero__ticker__track {
  display: inline-flex;
  white-space: nowrap;
  width: max-content;
  will-change: transform;
}
.hero__ticker__track span { flex-shrink: 0; padding: 0 0.75rem; }
.hero__ticker__track span:nth-child(even) { color: var(--red); }
@media (prefers-reduced-motion: no-preference) {
  .hero__ticker__track {
    animation: ticker-slide 32s linear infinite;
  }
  @keyframes ticker-slide {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
  }
}

.hero__photo {
  position: relative;
  margin: 0;
  border: 2px solid var(--white);
  overflow: hidden;
  background: var(--grey-1);
}
.hero__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(108%) brightness(0.95);
  transition: filter 600ms;
}
.hero__photo:hover img { filter: grayscale(0%) contrast(105%); }
.hero__photo figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  background: var(--black);
  border-top: var(--rule);
  color: var(--white);
}

/* ============================================================
   02 · PROOF
   ============================================================ */

.proof { background: var(--black-2); }

.proof__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: stretch;
  flex: 1;
  min-height: 0;
  min-width: 0;
  margin-top: 0.5rem;
}

.proof__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: 1fr;
  border: var(--rule);
  min-height: 0;
}
.proof__stats .stat--big { grid-row: span 2; }

.stat {
  padding: 1.5rem 1.75rem;
  border-bottom: var(--rule);
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  min-height: 0;
}
.stat:last-child { border-bottom: none; }

.stat__num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.5vw, 5.5rem);
  line-height: 0.85;
  letter-spacing: -0.01em;
  color: var(--white);
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
}
.stat--big .stat__num {
  font-size: clamp(4.5rem, 9vw, 9rem);
  color: var(--red);
}
.stat__unit {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--grey-4);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.15vw, 1.2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.3;
}
.stat--big .stat__label {
  font-size: clamp(1.05rem, 1.35vw, 1.4rem);
}

.proof__photo {
  margin: 0;
  border: 2px solid var(--white);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.proof__photo img {
  width: 100%;
  height: 100%;
  flex: 1;
  object-fit: cover;
  min-height: 420px;
  /* deliberate exception: stays in color */
}
.proof__photo figcaption {
  background: var(--red);
  color: var(--white-pure);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  padding: 0.55rem 0.8rem;
}

/* ============================================================
   03 · METHOD
   ============================================================ */

.method { background: var(--white); color: var(--black); }
.method .meta__num { color: var(--red); }
.method .meta__label { color: var(--black); }
.method .slab__h2 { color: var(--black); }

.method__h2 { font-size: clamp(4rem, 13vw, 12rem); }

.method__lede {
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  max-width: 52ch;
  margin: 0 0 3.5rem;
  color: var(--black);
}

.method__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 2px solid var(--black);
}
.method__steps li {
  border-right: 2px solid var(--black);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.method__steps li:last-child { border-right: none; }

.step__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  color: var(--red);
}
.method__steps h3 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 0.9;
  margin: 0 0 0.5rem;
  color: var(--black);
  text-transform: uppercase;
}
.method__steps p {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--grey-2);
  margin: 0;
}

/* ============================================================
   04 · TRANSFORMATIONS
   ============================================================ */

.transformations { background: var(--black); }
.transformations__lede {
  max-width: 58ch;
  margin: 0 0 3rem;
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: var(--grey-4);
}

.trans-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid var(--white);
}
.trans-grid li {
  position: relative;
  border-right: 1px solid var(--white);
  border-bottom: 1px solid var(--white);
  aspect-ratio: 1 / 1;
  overflow: hidden;
}
.trans-grid li:nth-child(3n) { border-right: none; }
.trans-grid li:nth-last-child(-n+3) { border-bottom: none; }
.trans-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(112%);
  transition: filter 350ms, transform 600ms;
}
.trans-grid li:hover img { filter: none; transform: scale(1.02); }
.trans__label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  padding: 0.5rem 0.8rem;
  border-top: 1px solid var(--white);
}

.trans__footnote {
  margin: 1.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--grey-3);
  letter-spacing: 0.1em;
}

/* ============================================================
   05 · 1:1 PROGRAMME
   ============================================================ */

.oneone { background: var(--grey-1); }

.oneone__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  margin-bottom: 3rem;
}
.oneone__pitch {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  max-width: 48ch;
  color: var(--white);
}

.oneone__lists {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.list-block {
  border: 2px solid var(--white);
  padding: 1.5rem;
  background: var(--black);
}
.list-block h3 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0 0 1rem;
  color: var(--white);
}
.list-block--neg { border-color: var(--red); }
.list-block--neg h3 { color: var(--red); }
.list-block ul { list-style: none; padding: 0; margin: 0; }
.list-block li {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--white);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--grey-2);
  position: relative;
  padding-left: 1.25rem;
}
.list-block li:last-child { border-bottom: none; }
.list-block li::before {
  content: '+';
  position: absolute;
  left: 0;
  top: 0.55rem;
  color: var(--red);
  font-family: var(--font-mono);
}
.list-block--neg li::before { content: '−'; color: var(--red); }

.oneone__cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding-top: 2rem;
  border-top: 2px solid var(--white);
}
.cta__price {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1;
  color: var(--red);
  letter-spacing: 0.01em;
}
.cta__sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--grey-4);
  max-width: 30ch;
}

/* ============================================================
   06 · PROGRAMME (PDF cover + sales)
   ============================================================ */

.programme { background: var(--white); color: var(--black); }
.programme .meta__num { color: var(--red); }
.programme .meta__label { color: var(--black); }
.programme .slab__h2 { color: var(--black); }

.programme__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.programme__mock {
  position: relative;
  padding: 0;
}
.cover {
  background: var(--black);
  color: var(--white);
  aspect-ratio: 4 / 5.4;
  padding: 2.25rem 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border: 2px solid var(--black);
  box-shadow: 1.2rem 1.2rem 0 var(--red);
  position: relative;
  overflow: hidden;
}
.cover::before {
  content: 'EDITION 01';
  position: absolute;
  top: 1.5rem;
  right: 1.8rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--grey-4);
}
.cover__small {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--grey-4);
  margin-bottom: 0.5rem;
}
.cover__big {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 0.9;
  letter-spacing: -0.005em;
}
.cover__big--red { color: var(--red); }
.cover__rule {
  display: block;
  width: 3rem;
  height: 4px;
  background: var(--red);
  margin: 1.2rem 0 0.8rem;
}
.cover__by, .cover__edition {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--grey-4);
}
.cover__edition { margin-top: 0.2rem; color: var(--grey-3); }

.programme__copy p {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  max-width: 52ch;
  color: var(--grey-2);
  margin: 0 0 2rem;
}
.programme__inside {
  list-style: none;
  padding: 0;
  margin: 0 0 2.5rem;
  border-top: 2px solid var(--black);
}
.programme__inside li {
  font-family: var(--font-body);
  font-size: 0.98rem;
  padding: 0.85rem 0 0.85rem 2rem;
  border-bottom: 1px solid var(--black);
  position: relative;
  color: var(--black);
}
.programme__inside li::before {
  content: '→';
  position: absolute;
  left: 0;
  top: 0.85rem;
  color: var(--red);
  font-family: var(--font-mono);
  font-weight: 600;
}

.programme__buy {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.buy__price {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1;
  color: var(--red);
}
.buy__sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--grey-3);
  max-width: 26ch;
}

/* ============================================================
   07 · WORDS
   ============================================================ */

.words { background: var(--black); }
.words__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid var(--white);
}
.words__list li {
  border-right: 1px solid var(--white);
  padding: 2.5rem 2rem;
  position: relative;
}
.words__list li:last-child { border-right: none; }
.words__list blockquote { margin: 0; }
.words__list p {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.2vw, 2.1rem);
  line-height: 1.05;
  font-weight: 400;
  letter-spacing: -0.005em;
  color: var(--white);
  margin: 0 0 2rem;
}
.words__list p::before {
  content: '“';
  display: block;
  font-size: 4rem;
  line-height: 0.5;
  color: var(--red);
  margin-bottom: 1rem;
}
.words__list footer {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--grey-4);
  border-top: 1px solid var(--grey-2);
  padding-top: 1rem;
}
.words__footnote {
  margin: 1.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--grey-3);
  letter-spacing: 0.1em;
}

/* ============================================================
   08 · FOOTER
   ============================================================ */

.footer {
  background: var(--black);
  min-height: auto;
  padding-bottom: var(--pad-y);
  border-bottom: none;
}
.footer__meta { margin-bottom: 4rem; }
.footer__mark {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 4rem;
}
.mark__big--xl, .mark__sessions--xl {
  font-size: clamp(5rem, 18vw, 18rem);
  line-height: 0.82;
  letter-spacing: -0.01em;
}
.mark__big--xl { color: var(--red); }
.mark__sessions--xl { color: var(--white); }

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 2rem;
  border-top: var(--rule);
}
.footer__cols h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--red);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}
.footer__cols a, .footer__cols p {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--white);
  margin: 0 0 0.4rem;
  letter-spacing: 0.04em;
}
.footer__cols a:hover { color: var(--red); }
.footer__legal { margin-top: 0.75rem !important; }
.footer__legal a { display: inline !important; color: var(--grey-4) !important; }
.footer__legal a:hover { color: var(--red) !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 960px) {
  .nav { grid-template-columns: auto 1fr; }
  .nav__links { display: none; }

  .hero__grid { grid-template-columns: 1fr; }
  .hero__photo { aspect-ratio: 3/4; max-height: 70vh; }

  .proof__layout { grid-template-columns: 1fr; }
  .proof__stats .stat--big { grid-row: auto; }
  .proof__photo img { min-height: 320px; }

  .method__steps { grid-template-columns: 1fr; }
  .method__steps li { border-right: none; border-bottom: 2px solid var(--black); }
  .method__steps li:last-child { border-bottom: none; }

  .trans-grid { grid-template-columns: repeat(2, 1fr); }
  .trans-grid li:nth-child(3n) { border-right: 1px solid var(--white); }
  .trans-grid li:nth-child(2n) { border-right: none; }
  .trans-grid li:nth-last-child(-n+3) { border-bottom: 1px solid var(--white); }
  .trans-grid li:nth-last-child(-n+2) { border-bottom: none; }

  .oneone__grid, .programme__grid { grid-template-columns: 1fr; }
  .words__list { grid-template-columns: 1fr; }
  .words__list li { border-right: none; border-bottom: 1px solid var(--white); }
  .words__list li:last-child { border-bottom: none; }

  .footer__cols { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .hero__h1 { font-size: clamp(4rem, 22vw, 7rem); }
  .trans-grid { grid-template-columns: 1fr; }
  .trans-grid li { border-right: none !important; border-bottom: 1px solid var(--white) !important; }
  .trans-grid li:last-child { border-bottom: none !important; }

  .footer__mark { flex-direction: column; gap: 0; }
}

/* ============================================================
   MOTION
   ============================================================ */

@media (prefers-reduced-motion: no-preference) {
  .slab { animation: slab-in 700ms cubic-bezier(0.2, 0.8, 0.2, 1) both; }
  @keyframes slab-in {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .hero__h1 span { animation: drop-in 800ms cubic-bezier(0.2, 0.8, 0.2, 1) both; }
  .hero__h1 span:nth-child(1) { animation-delay: 60ms; }
  .hero__h1 span:nth-child(2) { animation-delay: 180ms; }
  @keyframes drop-in {
    from { opacity: 0; transform: translateY(-30px) skewY(-2deg); }
    to   { opacity: 1; transform: none; }
  }
}