/* Momentum — case study page styles (shared) */

.mg-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: color-mix(in srgb, var(--m-bg) 80%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--m-hairline);
}
.mg-nav__logo {
  display: inline-flex;
  align-items: center;
  height: 1.6rem;
  line-height: 0;
}
.mg-nav__logo img { height: 100%; width: auto; display: block; }
.mg-nav__logo .logo--paper { display: none; }
.mg-nav__back {
  font-family: var(--font-mono); font-size: 0.85rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.mg-nav__back svg { width: 14px; height: 14px; }

/* Hero */
.cs-hero {
  padding-top: 9rem;
  padding-bottom: 3.5rem;
}
.cs-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--m-accent);
  margin-bottom: 1.75rem;
}
.cs-hero__client {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.9;
  font-size: clamp(3.25rem, 10vw, 9rem);
  text-transform: lowercase;
  margin: 0 0 1.5rem;
}
.cs-hero__deck {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-size: clamp(1.5rem, 3vw, 2.75rem);
  max-width: 22ch;
  margin: 0;
  text-wrap: balance;
}
.cs-hero__deck .accent { color: var(--m-accent); }

/* Feature band — phone + stats, mirrors the slide */
.cs-feature {
  padding: clamp(3rem, 6vw, 5.5rem) 0;
  border-top: 1px solid var(--m-hairline);
}
.cs-feature__grid {
  display: grid;
  grid-template-columns: 0.85fr 1px 1.15fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
}
.cs-feature__phone {
  display: flex;
  justify-content: center;
}
.cs-feature__phone img {
  width: 100%;
  max-width: 360px;
  height: auto;
  display: block;
}
.cs-feature__rule {
  width: 1px;
  align-self: stretch;
  background: var(--m-ink);
  opacity: 0.85;
}
.cs-feature__stats {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.cs-stat__num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.75rem, 6vw, 5rem);
  letter-spacing: -0.035em;
  line-height: 0.92;
  margin-bottom: 0.35rem;
}
.cs-stat__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.6;
  line-height: 1.4;
}
.cs-stat--electric .cs-stat__num { color: var(--m-electric); }
.cs-stat--relevance .cs-stat__num { color: var(--m-relevance); }
.cs-stat--ink .cs-stat__num { color: var(--m-ink); }
.cs-stat--fire .cs-stat__num { color: var(--m-fire); }

@media (max-width: 760px) {
  .cs-feature__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .cs-feature__rule { display: none; }
  .cs-feature__phone img { max-width: 260px; }
}

/* Body — challenge / solution / results */
.cs-body {
  padding: 0;
}
.cs-body__inner {
  padding: clamp(3.5rem, 7vw, 6.5rem) 0;
}
/* Coloured themes — full-bleed flat colour, no outlines */
.cs-body {
  --cs-fg: var(--m-ink);
  --cs-accent: var(--m-electric);
  --cs-rule: rgba(26,27,37,0.16);
  --cs-label: rgba(26,27,37,0.6);
}
.cs-body[data-theme="electric"] {
  background: var(--m-electric);
  --cs-fg: var(--m-paper);
  --cs-accent: var(--m-pink);
  --cs-rule: rgba(232,232,232,0.22);
  --cs-label: rgba(232,232,232,0.7);
}
.cs-body[data-theme="ink"] {
  background: var(--m-ink);
  --cs-fg: var(--m-paper);
  --cs-accent: var(--m-mindaro);
  --cs-rule: rgba(232,232,232,0.18);
  --cs-label: rgba(232,232,232,0.7);
}
.cs-body[data-theme="relevance"] {
  background: var(--m-relevance);
  --cs-fg: var(--m-ink);
  --cs-accent: var(--m-electric);
  --cs-rule: rgba(26,27,37,0.2);
  --cs-label: rgba(26,27,37,0.62);
}
.cs-body[data-theme="fire"] {
  background: var(--m-fire);
  --cs-fg: var(--m-paper);
  --cs-accent: var(--m-ink);
  --cs-rule: rgba(255,255,255,0.28);
  --cs-label: rgba(255,255,255,0.78);
}
.cs-body { color: var(--cs-fg); }
.cs-row {
  display: grid;
  grid-template-columns: 1fr 2.4fr;
  gap: clamp(1.5rem, 5vw, 5rem);
  padding: clamp(2rem, 4vw, 3.5rem) 0;
  border-top: 1px solid var(--cs-rule);
}
.cs-row:first-child { border-top: 0; padding-top: 0; }
.cs-row__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cs-label);
  padding-top: 0.4rem;
}
.cs-row__body h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 2.4vw, 2.4rem);
  text-transform: lowercase;
  line-height: 1.05;
  margin: 0 0 1.25rem;
}
.cs-row__body h2 .accent { color: var(--cs-accent); }
.cs-row__body p {
  font-size: clamp(1.05rem, 1.3vw, 1.3rem);
  line-height: 1.55;
  margin: 0;
  max-width: 58ch;
  opacity: 0.86;
}

@media (max-width: 760px) {
  .cs-row { grid-template-columns: 1fr; gap: 0.75rem; }
}

/* Next case */
.cs-next {
  border-top: 1px solid var(--m-hairline);
  padding: var(--section-y) 0;
}
.cs-next__head {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 1.5rem;
}
.cs-next__link {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--m-hairline);
  border-bottom: 1px solid var(--m-hairline);
  transition: padding var(--t-base) var(--ease);
}
.cs-next__link:hover { opacity: 1; padding-left: 1rem; }
.cs-next__sector {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 0.75rem;
}
.cs-next__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 4.5rem);
  letter-spacing: -0.03em;
  text-transform: lowercase;
  line-height: 1;
}
.cs-next__arrow {
  width: clamp(3.5rem, 6vw, 5rem);
  height: clamp(3.5rem, 6vw, 5rem);
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid currentColor;
  flex-shrink: 0;
  transition: all var(--t-base) var(--ease);
}
.cs-next__arrow svg { width: 1.3rem; height: 1.3rem; transition: transform var(--t-base) var(--ease); }
.cs-next__link:hover .cs-next__arrow { background: var(--m-accent); border-color: var(--m-accent); color: var(--m-paper); }
.cs-next__link:hover .cs-next__arrow svg { transform: translateX(0.3rem); }

/* Footer */
.mg-footer {
  background: var(--m-ink); color: var(--m-paper);
  padding: 4rem 0 2rem;
}
.mg-footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid rgba(232,232,232,0.12);
}
.mg-footer__logo { display: block; }
.mg-footer__logo img { width: clamp(280px, 60vw, 720px); height: auto; display: block; }
.mg-footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 1rem;
  opacity: 0.55; font-weight: 400;
}
.mg-footer__col ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 0.5rem;
  font-size: 0.95rem;
}
.mg-footer__bottom {
  display: flex; justify-content: space-between;
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.5;
  gap: 1rem; flex-wrap: wrap;
}
@media (max-width: 800px) {
  .mg-footer__top { grid-template-columns: 1fr 1fr; }
}