/* Bryma — Case Study (concept pages) chrome */

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-60);
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  transition: color .2s, border-color .2s;
}
.cs-back:hover { color: var(--navy); border-color: var(--navy); }
.cs-back svg { transition: transform .2s; }
.cs-back:hover svg { transform: translateX(-3px); }

/* HERO */
.cs-hero {
  padding: 56px 0 24px;
  background: linear-gradient(180deg, var(--bg-alt), transparent);
}
.cs-hero-head {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
  margin-top: 40px;
}
@media (max-width: 920px) { .cs-hero-head { grid-template-columns: 1fr; align-items: start; } }
.cs-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 5.5vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 500;
  color: var(--navy);
  margin-top: 20px;
  text-wrap: balance;
}
.cs-hero h1 em {
  font-style: normal;
  background: linear-gradient(180deg, transparent 65%, rgba(87,74,226,.2) 65%);
  padding: 0 4px;
}
.cs-hero .lead {
  margin-top: 0;
  font-size: clamp(17px, 1.4vw, 19px);
}

.cs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--violet);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.cs-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--violet);
}

.cs-meta {
  margin-top: 48px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 820px) { .cs-meta { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .cs-meta { grid-template-columns: 1fr; } }
.cs-meta-item {
  padding: 24px 24px 24px 0;
  border-right: 1px solid var(--line);
}
.cs-meta-item:last-child { border-right: 0; padding-right: 0; }
.cs-meta-item:not(:first-child) { padding-left: 24px; }
@media (max-width: 820px) {
  .cs-meta-item:nth-child(2n) { border-right: 0; }
  .cs-meta-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .cs-meta-item:nth-child(3) { padding-left: 0; }
}
@media (max-width: 480px) {
  .cs-meta-item { border-right: 0; padding-left: 0; padding-right: 0; }
}
.cs-meta-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-40);
}
.cs-meta-value {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--navy);
  font-weight: 500;
  margin-top: 6px;
  letter-spacing: -0.01em;
}

.cs-hero-poster {
  margin-top: 56px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}

/* SECTIONS */
.cs-section { padding: 96px 0; border-top: 1px solid var(--line); }
.cs-section.alt { background: var(--bg-alt); }
.cs-section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: end;
  margin-bottom: 56px;
}
@media (max-width: 820px) { .cs-section-head { grid-template-columns: 1fr; align-items: start; gap: 16px; } }
.cs-section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.028em;
  font-weight: 500;
  color: var(--navy);
  margin-top: 16px;
  text-wrap: balance;
}
.cs-section-head .lead { max-width: 50ch; }

/* BRIEF (3 cards) */
.cs-brief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
@media (max-width: 820px) { .cs-brief-grid { grid-template-columns: 1fr; } }
.cs-brief-card {
  background: #fff;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 220px;
}
.cs-brief-card .cb-label {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--violet);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}
.cs-brief-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.cs-brief-card p {
  font-size: 14px;
  color: var(--ink-60);
  line-height: 1.55;
}

/* DIRECTION ARTISTIQUE */
.cs-da {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
}
@media (max-width: 900px) { .cs-da { grid-template-columns: 1fr; } }

.cs-da-block {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.cs-da-block-label {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-40);
  font-weight: 500;
}
.cs-da-block h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-top: 12px;
}

.cs-palette {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.cs-swatch {
  border-radius: 10px;
  aspect-ratio: 1 / 1.1;
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(0,0,0,.06);
}
.cs-swatch-name { font-family: var(--font-display); font-size: 13px; font-weight: 500; letter-spacing: -0.005em; }
.cs-swatch-code { font-family: var(--font-body); font-size: 11px; font-weight: 500; opacity: .7; letter-spacing: 0.04em; }

.cs-type-row {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.cs-type-row + .cs-type-row { margin-top: 16px; padding-top: 16px; }
.cs-type-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-40);
  margin-bottom: 6px;
}
.cs-type-sample { font-size: 22px; color: var(--navy); line-height: 1.1; }
.cs-type-meta { font-size: 12px; color: var(--ink-60); margin-top: 6px; }

/* CAPTURES (fictional site sections shown with commentary) */
.cs-capture {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
  margin-top: 40px;
}
@media (max-width: 980px) { .cs-capture { grid-template-columns: 1fr; } }

.cs-capture-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.cs-capture-label .num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--violet);
  background: var(--violet-soft);
  padding: 4px 10px;
  border-radius: 999px;
}
.cs-capture-label .title {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.005em;
}
.cs-capture-label .sub {
  font-size: 12px;
  color: var(--ink-40);
  margin-left: auto;
}

.cs-capture-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  background: #fff;
}

.cs-commentary {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: sticky;
  top: 100px;
}
.cs-commentary .cm-tag {
  font-size: 11px;
  color: var(--violet);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}
.cs-commentary h4 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-top: 12px;
  line-height: 1.2;
}
.cs-commentary p {
  font-size: 14px;
  color: var(--ink-60);
  line-height: 1.6;
  margin-top: 14px;
}
.cs-commentary p + p { margin-top: 10px; }
.cs-commentary strong { color: var(--navy); font-weight: 500; }
.cs-commentary ul { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.cs-commentary ul li {
  font-size: 13px;
  color: var(--ink-60);
  display: flex;
  gap: 10px;
  align-items: start;
  line-height: 1.5;
}
.cs-commentary ul li::before {
  content: "—";
  color: var(--violet);
  font-weight: 600;
  flex-shrink: 0;
}

/* DESIGN CHOICES */
.cs-choices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 820px) { .cs-choices { grid-template-columns: 1fr; } }
.cs-choice {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.cs-choice .ch-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--violet);
  letter-spacing: 0.08em;
}
.cs-choice h4 {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.15;
}
.cs-choice p {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--ink-60);
  line-height: 1.6;
}

/* TAKEAWAY */
.cs-takeaway {
  background: var(--navy);
  color: #fff;
  padding: 56px 48px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.cs-takeaway::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 30%, rgba(87,74,226,.35), transparent 50%);
  pointer-events: none;
}
.cs-takeaway > * { position: relative; }
.cs-takeaway .cs-eyebrow { color: #d4cef9; }
.cs-takeaway .cs-eyebrow::before { background: var(--violet); }
.cs-takeaway h2 {
  margin-top: 16px;
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 500;
}
.cs-takeaway p {
  margin-top: 20px;
  color: rgba(255,255,255,.75);
  font-size: 16px;
  line-height: 1.6;
  max-width: 60ch;
}

/* RELATED concepts */
.cs-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 720px) { .cs-related-grid { grid-template-columns: 1fr; } }
.cs-related-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color .2s, transform .2s;
  min-height: 180px;
}
.cs-related-card:hover { border-color: var(--navy); transform: translateY(-2px); }
.cs-related-card .crc-idx {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-40);
}
.cs-related-card h4 {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--navy);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-top: auto;
}
.cs-related-card .crc-sub {
  font-size: 13px;
  color: var(--ink-60);
}
.cs-related-card .crc-arrow {
  margin-top: 8px;
  font-size: 13px;
  color: var(--violet);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s;
}
.cs-related-card:hover .crc-arrow { gap: 10px; }