/* ──────────────────────────────────────────────────────────────
   QUACKTORY · CASE STUDY 06 · 2026
   Source: output/crits/pinterest_53198839343857598.md
   Direction: editorial / restraint / size ladder
   Palette tokens derived directly from the crit (light neutral
   gray #E5E5E5, near-black #0A0A0A, single accent in the hero
   photograph only — chrome stays monochrome outside the media).
   ────────────────────────────────────────────────────────────── */

:root {
  --bg: #E5E5E5;
  --fg: #0A0A0A;
  --ink: #0A0A0A;
  --muted: #6B6B6B;
  --rule: rgba(10, 10, 10, 0.18);
  --card: #FFFFFF;
  --shadow: 0 30px 60px rgba(10, 10, 10, 0.12);
  --radius: 36px;
  --font-display: "Archivo Black", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

ol,
ul {
  list-style: none;
}

/* ── utility ─────────────────────────────────────────────────── */
.section {
  min-height: 100vh;
  padding: clamp(48px, 8vw, 120px) clamp(24px, 6vw, 96px);
  display: grid;
  align-content: center;
}

.kicker {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink);
}

.kicker--left {
  display: block;
  margin-bottom: 18px;
}

/* ── masthead (translates crit's 3-col header with thin rules) ── */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(16px, 4vw, 64px);
  padding: 18px clamp(24px, 6vw, 96px);
  background: rgba(229, 229, 229, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  border-top: 1px solid var(--rule);
}

.masthead__col {
  display: flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
}

.masthead__col--left {
  justify-content: flex-start;
}

.masthead__col--center {
  justify-content: center;
}

.masthead__col--right {
  justify-content: flex-end;
  color: var(--muted);
}

.wordmark {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ── hero ────────────────────────────────────────────────────── */
.hero {
  gap: clamp(16px, 3vw, 32px);
}

.hero__rule {
  height: 1px;
  background: var(--rule);
  margin-bottom: 6px;
}

.hero__meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.tag {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--ink);
}

.tag--filled {
  background: var(--ink);
  color: var(--bg);
}

.tag--outline {
  background: transparent;
  color: var(--ink);
}

.hero__headline {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(64px, 12vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  margin: clamp(8px, 1.5vw, 16px) 0 clamp(20px, 3vw, 36px);
  max-width: 14ch;
}

.hero__subline {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  max-width: 56ch;
  margin-bottom: clamp(28px, 4vw, 56px);
}

/* ── hero frame (translates crit's horizontal rounded image card) */
.hero__frame {
  position: relative;
  width: min(100%, 1280px);
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

/* spec cards (translate Nike's "stats" + "music player" overlays) */
.spec-card {
  position: absolute;
  background: var(--card);
  color: var(--ink);
  border-radius: 14px;
  padding: 14px 16px;
  min-width: 200px;
  box-shadow: 0 16px 40px rgba(10, 10, 10, 0.18);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.spec-card--left {
  left: clamp(20px, 4%, 56px);
  top: clamp(20px, 6%, 64px);
}

.spec-card--right {
  right: clamp(20px, 4%, 56px);
  bottom: clamp(20px, 6%, 64px);
}

.spec-card__row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.spec-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--ink);
}

.spec-card__dot--filled {
  background: var(--ink);
}

.spec-card__label {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.spec-card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric__k {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.metric__v {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.spec-card__quote {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
}

.spec-card__controls {
  display: flex;
  gap: 6px;
}

.ctrl {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 900;
}

.ctrl--accent {
  background: var(--ink);
  color: #fff;
}

/* ── case study block (two-column: UI mockup + copy) ─────────── */
.case {
  padding-top: clamp(48px, 6vw, 96px);
  padding-bottom: clamp(48px, 6vw, 96px);
}

.case__grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  width: 100%;
}

.case__mockup {
  display: flex;
  justify-content: center;
}

.mockup-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.mockup-card__bar {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(10, 10, 10, 0.08);
}

.mockup-card__bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(10, 10, 10, 0.2);
}

.mockup-card__body {
  padding: 22px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mockup-card__label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
}

.mockup-list {
  display: grid;
  gap: 12px;
}

.mockup-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 0;
  border-top: 1px solid rgba(10, 10, 10, 0.08);
}

.mockup-list li b {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.mockup-list li span {
  color: var(--muted);
  font-family: var(--font-display);
}

/* tabs (translate OS / ABOUT → EDITION / SIZE GUIDE) */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

.tab {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.tab--outline {
  background: transparent;
  color: var(--ink);
}

.tab--filled {
  background: var(--ink);
  color: var(--bg);
}

.tab.is-active {
  background: var(--ink);
  color: var(--bg);
}

.tab.is-active.tab--outline {
  background: var(--ink);
  color: var(--bg);
}

.tab-panel {
  display: none;
}

.tab-panel.is-visible {
  display: block;
}

.lede {
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: -0.005em;
  text-transform: uppercase;
  line-height: 1.25;
  margin-bottom: 18px;
  max-width: 38ch;
}

.body {
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  max-width: 56ch;
}

/* ── ladder / timeline ───────────────────────────────────────── */
.ladder {
  gap: clamp(24px, 4vw, 48px);
}

.ladder__head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: clamp(16px, 3vw, 32px);
}

.ladder__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.ladder__track {
  position: relative;
  display: grid;
  grid-template-columns: auto repeat(5, 1fr) auto;
  align-items: end;
  gap: clamp(8px, 1.5vw, 24px);
  padding: clamp(20px, 3vw, 36px) 0 clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--rule);
}

.ladder__edge {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: start;
  padding-top: 8px;
  white-space: nowrap;
}

.ladder__edge--right {
  text-align: right;
}

.node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  transition: transform 0.3s var(--ease);
}

.node img {
  width: 100%;
  max-width: 180px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 12px;
  transition: transform 0.4s var(--ease);
}

.node:hover img,
.node:focus-visible img {
  transform: translateY(-8px) scale(1.03);
}

.node__label {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.node__size {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

/* per-node under-glow on hover (translates crit's "per-object under-glow") */
.node::after {
  content: "";
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 4px;
  background: var(--ink);
  border-radius: 2px;
  transition: width 0.3s var(--ease);
}

.node:hover::after,
.node:focus-visible::after {
  width: 60%;
}

.ladder__rail {
  position: relative;
  height: 2px;
  background: rgba(10, 10, 10, 0.12);
  border-radius: 2px;
  overflow: hidden;
}

.ladder__rail-fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--ink) 0%, var(--ink) var(--fill, 0%), transparent var(--fill, 0%));
  transition: background 0.6s var(--ease);
}

/* ── CTA ─────────────────────────────────────────────────────── */
.cta {
  min-height: 60vh;
  padding-bottom: clamp(48px, 8vw, 120px);
}

.cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: end;
  border-top: 1px solid var(--rule);
  padding-top: clamp(28px, 4vw, 48px);
}

.cta__button {
  display: inline-flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.015em;
  text-transform: uppercase;
  padding: 18px 28px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
  align-self: end;
  justify-self: start;
  width: fit-content;
}

.cta__button:hover,
.cta__button:focus-visible {
  background: var(--ink);
  color: var(--bg);
  transform: translateY(-2px);
}

.cta__button-arrow {
  font-size: 0.8em;
}

.cta__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.cta__meta-line b {
  color: var(--ink);
  font-weight: 700;
}

/* ── modal ───────────────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: clamp(16px, 4vw, 48px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.modal.is-open {
  pointer-events: auto;
  opacity: 1;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.55);
  backdrop-filter: blur(6px);
}

.modal__panel {
  position: relative;
  width: min(100%, 920px);
  background: var(--card);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 48px);
  box-shadow: 0 40px 80px rgba(10, 10, 10, 0.35);
  transform: translateY(20px) scale(0.98);
  transition: transform 0.35s var(--ease);
}

.modal.is-open .modal__panel {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--ink);
  font-size: 20px;
  line-height: 1;
  font-weight: 900;
}

.modal__close:hover,
.modal__close:focus-visible {
  background: var(--ink);
  color: var(--bg);
}

.modal__bar {
  height: 4px;
  width: 64px;
  background: var(--ink);
  border-radius: 2px;
  margin-bottom: 24px;
}

.modal__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.modal__image-wrap {
  background: var(--bg);
  border-radius: 18px;
  padding: 16px;
}

.modal__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.modal__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal__size {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted);
}

.modal__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.015em;
  text-transform: uppercase;
  line-height: 0.95;
}

.modal__copy {
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.55;
  color: var(--ink);
}

.modal__price {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 8px;
}

/* ── scroll fade-in ──────────────────────────────────────────── */
[data-fade] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-fade].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── responsive ──────────────────────────────────────────────── */
@media (max-width: 960px) {
  .case__grid {
    grid-template-columns: 1fr;
  }
  .ladder__track {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .ladder__edge {
    grid-column: span 2;
    padding-top: 0;
  }
  .cta__grid {
    grid-template-columns: 1fr;
  }
  .modal__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .masthead {
    grid-template-columns: 1fr;
    gap: 8px;
    text-align: center;
  }
  .masthead__col {
    justify-content: center;
  }
  .spec-card {
    min-width: 0;
    width: calc(50% - 16px);
    padding: 10px 12px;
  }
  .spec-card__metrics {
    grid-template-columns: 1fr 1fr;
  }
  .ladder__track {
    grid-template-columns: 1fr;
  }
  .ladder__edge {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}