/* ============================================================
   Jodie Downey — Case Studies
   Editorial dark theme: off-black, warm greys, restrained gold.
   ============================================================ */

:root {
  --bg: #100f0d;
  --bg-raised: #161410;
  --bg-raised-2: #1c1a15;
  --line: rgba(214, 205, 186, 0.13);
  --line-strong: rgba(214, 205, 186, 0.24);

  --ink: #f1ede4;
  --ink-dim: #cec7b8;
  --ink-mute: #8d8577;
  --ink-faint: #5c5648;

  --gold: #b6905c;
  --gold-bright: #d8b378;
  --gold-dim: #8a6f49;
  --gold-wash: rgba(182, 144, 92, 0.1);

  --serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", serif;
  --sans: "Manrope", "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 15% 0%, rgba(182, 144, 92, 0.07), transparent 60%),
    radial-gradient(ellipse 50% 50% at 100% 100%, rgba(182, 144, 92, 0.05), transparent 60%);
}

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

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 64px);
  position: relative;
  z-index: 1;
}

.eyebrow {
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--gold-dim);
  margin-right: 10px;
  vertical-align: middle;
}

::selection {
  background: var(--gold-dim);
  color: #100f0d;
}

/* ---------------- Nav ---------------- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: linear-gradient(180deg, rgba(16, 15, 13, 0.92), rgba(16, 15, 13, 0));
  backdrop-filter: blur(6px);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 22px;
  padding-bottom: 22px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--serif);
  font-size: 19px;
  color: var(--ink);
}

.brand small {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 600;
}

.brand .mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gold-bright);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  font-size: 13.5px;
  color: var(--ink-dim);
}

.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color 0.25s var(--ease);
}

.nav-links a:hover {
  color: var(--gold-bright);
}

.nav-links a.button {
  color: var(--bg);
  background: var(--gold);
  padding: 8px 16px;
  border-radius: 100px;
  font-weight: 600;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.nav-links a.button:hover {
  background: var(--gold-bright);
  transform: translateY(-1px);
}

.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-dim);
  font-size: 13.5px;
  transition: color 0.25s var(--ease), gap 0.25s var(--ease);
}

.nav-back:hover {
  color: var(--gold-bright);
  gap: 12px;
}

/* ---------------- Reveal ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1.is-visible { transition-delay: 0.1s; }
.reveal-delay-2.is-visible { transition-delay: 0.2s; }
.reveal-delay-3.is-visible { transition-delay: 0.32s; }
.reveal-delay-4.is-visible { transition-delay: 0.44s; }

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all 0.3s var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-gold {
  background: var(--gold);
  color: #100f0d;
}

.btn-gold:hover {
  background: var(--gold-bright);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px -12px rgba(182, 144, 92, 0.55);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--gold-dim);
  color: var(--gold-bright);
  transform: translateY(-2px);
}

/* ---------------- Footer ---------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  position: relative;
  z-index: 1;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.footer-note {
  color: var(--ink-mute);
  font-size: 13.5px;
}

.footer-links {
  display: flex;
  gap: 26px;
  font-size: 13.5px;
  color: var(--ink-dim);
}

.footer-links a {
  transition: color 0.25s var(--ease);
}

.footer-links a:hover {
  color: var(--gold-bright);
}

/* ---------------- Icon strokes ---------------- */

.icon-line {
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-dot {
  fill: var(--gold);
}

.icon-faint {
  stroke: var(--ink-faint);
}

/* ============================================================
   Home page
   ============================================================ */

.hero {
  padding: 200px 0 120px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(32px, 6vw, 90px);
  align-items: end;
}

.hero h1 {
  font-size: clamp(42px, 6.4vw, 78px);
  line-height: 1.03;
}

.hero h1 em {
  font-style: italic;
  color: var(--gold-bright);
}

.hero-intro {
  padding-bottom: 8px;
}

.hero-intro p {
  color: var(--ink-dim);
  font-size: 17px;
  max-width: 40ch;
}

.hero-intro p + p {
  margin-top: 14px;
}

.hero-meta {
  display: flex;
  gap: 34px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero-meta div span {
  display: block;
}

.hero-meta .num {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--gold-bright);
}

.hero-meta .label {
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* Case study index list */

.cs-index {
  padding: 40px 0 140px;
}

.cs-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 48px 0;
  border-top: 1px solid var(--line);
  transition: padding-left 0.4s var(--ease), background 0.4s var(--ease);
}

.cs-index .cs-row:last-child {
  border-bottom: 1px solid var(--line);
}

a.cs-row {
  cursor: pointer;
}

a.cs-row:hover {
  padding-left: 14px;
  background: linear-gradient(90deg, var(--gold-wash), transparent 70%);
}

a.cs-row:hover .cs-title {
  color: var(--gold-bright);
}

a.cs-row:hover .cs-arrow {
  transform: translateX(6px);
  color: var(--gold-bright);
}

.cs-num {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

.cs-title {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 38px);
  transition: color 0.3s var(--ease);
}

.cs-tags {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.cs-tag {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 5px 12px;
}

.cs-arrow {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
  white-space: nowrap;
}

/* ============================================================
   Case study — slide sections
   ============================================================ */

.slide {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 150px 0 96px;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.slide-inner {
  width: 100%;
}

.slide-index {
  position: absolute;
  top: 130px;
  right: clamp(24px, 5vw, 64px);
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}

.slide-index span {
  color: var(--gold-dim);
}

/* Cover slide */

.slide-cover {
  min-height: 100vh;
  padding-top: 170px;
}

.cover-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.cover-tags span {
  font-size: 11.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--gold-bright);
  border: 1px solid var(--gold-dim);
  border-radius: 100px;
  padding: 6px 14px;
}

.slide-cover h1 {
  font-size: clamp(38px, 6.2vw, 74px);
  line-height: 1.05;
  max-width: 16ch;
}

.cover-sub {
  margin-top: 26px;
  color: var(--ink-dim);
  font-size: 19px;
  max-width: 54ch;
}

.cover-byline {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--ink-mute);
}

.cover-byline .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  color: var(--gold-bright);
  font-size: 14px;
}

.cover-byline strong {
  color: var(--ink);
  font-weight: 600;
}

.scroll-cue {
  position: absolute;
  bottom: 48px;
  left: clamp(24px, 5vw, 64px);
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-mute);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scroll-cue .line {
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--gold-dim), transparent);
  animation: cue-drop 2.2s var(--ease) infinite;
}

@keyframes cue-drop {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* Generic content slide layout */

.slide-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.slide-head h2 {
  font-size: clamp(30px, 4vw, 46px);
  margin-top: 18px;
}

.slide-lede {
  color: var(--ink-dim);
  font-size: 17px;
  max-width: 62ch;
  margin-top: 18px;
}

.two-col {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

/* Summary pull quote */

.summary-quote {
  font-family: var(--serif);
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.4;
  color: var(--ink);
  max-width: 30ch;
}

.summary-quote em {
  font-style: italic;
  color: var(--gold-bright);
}

.summary-side {
  border-left: 1px solid var(--line);
  padding-left: 36px;
}

.summary-side p {
  color: var(--ink-dim);
  font-size: 16px;
}

.summary-facts {
  margin-top: 34px;
  display: grid;
  gap: 18px;
}

.summary-fact {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  font-size: 13.5px;
  color: var(--ink-mute);
}

.summary-fact strong {
  color: var(--gold-bright);
  font-family: var(--serif);
  font-size: 15px;
}

/* Problem list */

.problem-list {
  display: grid;
  gap: 0;
}

.problem-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 26px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.problem-list .problem-item:last-child {
  border-bottom: 1px solid var(--line);
}

.problem-icon {
  width: 44px;
  height: 44px;
}

.problem-item h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.problem-item p {
  color: var(--ink-dim);
  font-size: 15.5px;
  max-width: 60ch;
}

/* Strategy pillars */

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.pillar {
  background: var(--bg);
  padding: 34px 30px;
  position: relative;
}

.pillar:nth-child(2) {
  background: var(--bg-raised);
}

.pillar-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.pillar .pillar-num {
  font-family: var(--serif);
  color: var(--gold-dim);
  font-size: 14px;
  margin-bottom: 22px;
  display: block;
}

.pillar h3 {
  font-size: 18.5px;
  margin-bottom: 12px;
}

.pillar p {
  color: var(--ink-dim);
  font-size: 15px;
}

.pillar p + p {
  margin-top: 10px;
}

/* Phase timeline */

.phase-list {
  display: grid;
  gap: 0;
}

.phase {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 30px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  position: relative;
}

.phase-list .phase:last-child {
  border-bottom: 1px solid var(--line);
}

.phase-tag {
  font-size: 12px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 4px;
}

.phase-tag strong {
  display: block;
  font-family: var(--serif);
  font-size: 30px;
  color: var(--gold-dim);
  text-transform: none;
  letter-spacing: 0;
  margin-bottom: 6px;
}

.phase h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.phase p {
  color: var(--ink-dim);
  font-size: 15.5px;
  max-width: 66ch;
}

.phase-features {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.phase-features li {
  list-style: none;
  display: flex;
  gap: 12px;
  font-size: 14.5px;
  color: var(--ink-dim);
}

.phase-features li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

/* Impact stats */

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.impact-grid.uneven {
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
}

.stat {
  background: var(--bg);
  padding: 40px 26px;
}

.stat:first-child {
  background: var(--bg-raised);
}

.stat .stat-num {
  font-family: var(--serif);
  font-size: clamp(38px, 4.4vw, 56px);
  color: var(--gold-bright);
  line-height: 1;
}

.stat .stat-num sup {
  font-size: 0.45em;
  top: -0.6em;
}

.stat .stat-label {
  margin-top: 16px;
  font-size: 13.5px;
  color: var(--ink-dim);
  max-width: 22ch;
}

/* Closing / CTA */

.closing-statement {
  font-family: var(--serif);
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.35;
  max-width: 30ch;
  color: var(--ink);
}

.closing-statement em {
  font-style: italic;
  color: var(--gold-bright);
}

.cta-panel {
  border-left: 1px solid var(--line);
  padding-left: 36px;
}

.cta-panel p {
  color: var(--ink-dim);
  font-size: 16px;
  max-width: 44ch;
}

.cta-actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.cta-nextlink {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-mute);
}

.cta-nextlink a {
  color: var(--gold-bright);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 1px;
  transition: border-color 0.25s var(--ease);
}

.cta-nextlink a:hover {
  border-color: var(--gold-bright);
}

/* Progress dots */

.slide-progress {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.slide-progress button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: transparent;
  padding: 0;
  cursor: pointer;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.slide-progress button.is-active {
  background: var(--gold);
  border-color: var(--gold);
  transform: scale(1.3);
}

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .hero-grid,
  .two-col {
    grid-template-columns: 1fr;
  }

  .summary-side {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 30px;
    margin-top: 30px;
  }

  .pillar-grid,
  .impact-grid,
  .impact-grid.uneven {
    grid-template-columns: 1fr;
  }

  .phase {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .cs-row {
    grid-template-columns: 46px 1fr;
  }

  .cs-arrow {
    grid-column: 2;
  }

  .slide-progress {
    display: none;
  }

  .cta-panel {
    border-left: none;
    padding-left: 0;
    margin-top: 30px;
    border-top: 1px solid var(--line);
    padding-top: 30px;
  }
}

@media (max-width: 560px) {
  .slide {
    padding: 120px 0 72px;
  }

  .hero {
    padding: 150px 0 80px;
  }

  .hero-meta {
    gap: 22px;
    flex-wrap: wrap;
  }
}