:root {
  --hc-accent: #000;
  --hc-dim: #777;
}

body { background: #fff; }
header { background: #fff; }

/* ── TL;DR ── */
.hc-tldr {
  padding-block: var(--space-xl);
  padding-inline: 8%;
  text-align: center;
}

.hc-body {
  font-size: 1.03rem;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: -0.01em;
  margin-block-end: 0;
  color: var(--text-main);
}

.hc-body + .hc-body {
  margin-block-start: var(--space-lg);
}

.hc-reel-wrap {
  margin-block-start: var(--space-xl);
  position: relative;
}

.hc-video-inner {
  inline-size: 80%;
  margin-inline: auto;
  position: relative;
}

.hc-video-inner video,
.hc-video-inner img {
  inline-size: 100%;
  display: block;
  border-radius: var(--radius);
}

.hc-reel-wrap {
  overflow: hidden;
  border-radius: var(--radius);
  margin-block-start: var(--space-xl);
}

.hc-cover-video {
  inline-size: 100%;
  display: block;
  scale: 1.1;
}

.hc-cover-native {
  inline-size: auto;
  block-size: auto;
  max-inline-size: 100%;
  scale: 1;
}

.hc-media-placeholder {
  inline-size: 80%;
  margin-inline: auto;
  aspect-ratio: 16 / 9;
  background: #f0f0f0;
  border-radius: var(--radius);
}

.hc-ext-link {
  display: inline-block;
  margin-block-start: var(--space-xl);
  font-family: var(--font);
  font-size: 1.03rem;
  font-weight: 500;
  color: var(--text-main);
  text-decoration: none;
}

.hc-ext-link:hover { text-decoration: underline; }

/* ── Layout ── */
.case-layout {
  display: grid;
  grid-template-columns: 1fr minmax(0, 75rem) 1fr;
  align-items: start;
}

.case-study {
  grid-column: 2;
  padding-inline: var(--space-xl);
}

/* ── Sidebar ── */
.case-sidebar {
  position: fixed;
  inset-block-end: calc(var(--space-lg) + var(--space-xs));
  inset-inline-start: var(--space-lg);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.025rem;
}

.sidebar-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-block: var(--space-sm);
  padding-inline-start: var(--space-lg);
  padding-inline-end: var(--space-md);
  background: #fff;
  max-inline-size: 12rem;
  position: relative;
  overflow: hidden;
  max-block-size: 0;
  padding-block: 0;
  opacity: 0;
  transition: max-block-size 0.35s ease, opacity 0.3s ease, padding-block 0.3s ease;
}

.sidebar-box::before {
  content: '';
  position: absolute;
  inset-inline-start: var(--space-sm);
  inset-block-start: var(--space-sm);
  inset-block-end: var(--space-sm);
  inline-size: 2px;
  background: var(--hc-accent);
  pointer-events: none;
}

.case-sidebar.open .sidebar-box {
  max-block-size: 20rem;
  padding-block: var(--space-sm);
  opacity: 1;
}

.sidebar-close {
  position: absolute;
  inset-block-start: var(--space-xs);
  inset-inline-end: var(--space-xs);
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 1rem;
  color: var(--text-main);
  cursor: pointer;
  line-height: 1;
  padding: 0;
}

.sidebar-item {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-xs);
}

.sidebar-label {
  font-size: var(--text-sm);
  color: var(--hc-accent);
  line-height: 1.2;
}

.sidebar-value {
  font-size: var(--text-sm);
  color: var(--text-main);
  line-height: 1.2;
}

/* ── Nav ── */
.hc-nav {
  position: fixed;
  inset-block-end: var(--space-lg);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-xs);
  background: #fff;
  padding-block: var(--space-xs);
  padding-inline: var(--space-sm);
  z-index: 20;
}

.hc-nav-btn {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: var(--text-sm);
  color: var(--text-main);
  cursor: pointer;
  padding-block: var(--space-xs);
  padding-inline: var(--space-md);
}

.hc-nav-btn.active { color: var(--hc-accent); }

.hc-nav-next-btn {
  white-space: nowrap;
  color: var(--hc-accent);
}

.sidebar-toggle {
  color: var(--text-main);
  padding-inline-start: 0;
}

.case-sidebar.open .sidebar-toggle { color: var(--hc-accent); }

/* ── Tools panel ── */
.tools-panel {
  position: fixed;
  inset-block-end: calc(var(--space-lg) + var(--space-xs));
  inset-inline-end: var(--space-lg);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.025rem;
}

.tools-box {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-block: var(--space-sm);
  padding-inline-start: var(--space-md);
  padding-inline-end: var(--space-lg);
  background: #fff;
  inline-size: 12rem;
  position: relative;
  overflow: hidden;
  max-block-size: 0;
  padding-block: 0;
  opacity: 0;
  transition: max-block-size 0.35s ease, opacity 0.3s ease, padding-block 0.3s ease;
}

.tools-box::before {
  content: '';
  position: absolute;
  inset-inline-end: var(--space-sm);
  inset-block-start: var(--space-sm);
  inset-block-end: var(--space-sm);
  inline-size: 2px;
  background: var(--hc-accent);
  pointer-events: none;
}

.tools-box .sidebar-close {
  inset-inline-end: auto;
  inset-inline-start: var(--space-xs);
  font-size: var(--text-sm);
}

.tools-box .sidebar-item {
  display: block;
  text-align: end;
}

.tools-panel.open .tools-box {
  max-block-size: 20rem;
  padding-block: var(--space-sm);
  opacity: 1;
}

.tools-btn { padding-inline-end: 0; }
.tools-panel.open .tools-btn { color: var(--hc-accent); }

#soundToggle,
#fullscreenToggle {
  position: absolute;
  inset-block-start: var(--space-md);
  background: #fff;
  border: none;
  font-family: var(--font);
  font-size: var(--text-sm);
  color: var(--text-main);
  cursor: pointer;
  padding-block: var(--space-xs);
  padding-inline: var(--space-md);
  border-radius: 0;
}

#soundToggle { inset-inline-end: var(--space-md); }
#fullscreenToggle { inset-inline-end: calc(var(--space-md) + 6rem); }

/* ── case study sections ── */
.hc-section {
  padding-block: var(--space-xl);
  padding-inline: 8%;
}

.hc-subheading {
  font-size: clamp(1.75rem, 3.5vw, 3.5rem);
  font-weight: 500;
  font-family: 'Instrument Sans', sans-serif;
  letter-spacing: -0.05em;
  color: var(--hc-accent);
  margin-block-end: var(--space-lg);
}