/* ============================================
   SAMPLE DELIVERABLES
   Shared by the pages in /samples: one example of what each package
   delivers, shown on a fictional product. Builds on the case study
   layout (.case-content, .case-header, .case-section) in styles.css.
   ============================================ */

:root {
  --sev-high: #f59e0b;
  --sev-med: #a78bfa;
  --sev-low: #2dd4bf;
}

[data-theme="light"] {
  --sev-high: #b45309;
  --sev-med: #6d28d9;
  --sev-low: #0f766e;
}

.sample-page .case-content {
  padding-top: 7rem;
}

.sample-notice {
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  border: 1px dashed var(--border-accent);
  border-radius: var(--radius-md);
  background: var(--surface-accent);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray-light);
}

.sample-notice strong {
  color: var(--white-bright);
  font-weight: 500;
}

.sample-lead {
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--white-bright) !important;
  margin-bottom: 1rem;
}

.case-section p + p {
  margin-top: 1rem;
}

.case-section h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.3;
  font-weight: 600;
  color: var(--white-bright);
  margin: 2rem 0 0.5rem;
}

/* ---- Product screenshot ---- */
.sample-shot {
  margin: 1.75rem 0 0;
}

.sample-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.6);
}

.sample-shot figcaption {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--gray-light);
}

/* ---- Lists ---- */
.sample-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sample-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray-light);
}

.sample-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple);
}

.sample-list strong {
  color: var(--white);
  font-weight: 500;
}

/* ---- Chips ---- */
.sample-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  color: var(--gray-light);
  white-space: nowrap;
}

.sample-chip::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.sample-chip--plain::before { display: none; }
.sample-chip--high { color: var(--sev-high); }
.sample-chip--med { color: var(--sev-med); }
.sample-chip--low { color: var(--sev-low); }

.sample-chip--win {
  color: #fff;
  background: var(--purple);
  border-color: var(--purple);
}

.sample-chip--win::before { display: none; }

/* ---- Stat tiles ---- */
.sample-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.sample-stat {
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.35rem;
}

.sample-stat-num {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white-bright);
}

.sample-stat-label {
  margin-top: 0.45rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--gray-light);
}

.sample-stat-was {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-light);
}

.sample-delta {
  color: var(--sev-low);
}

/* ---- Friction map ---- */
.friction-map {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.friction-stage {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1rem 0.85rem;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
}

.friction-stage[data-level="high"] {
  border-color: rgba(245, 158, 11, 0.35);
}

.friction-step {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--gray-light);
}

.friction-name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white-bright);
  line-height: 1.25;
}

.friction-meter {
  display: flex;
  gap: 3px;
}

.friction-meter span {
  flex: 1;
  height: 5px;
  border-radius: 3px;
  background: var(--border-medium);
}

.friction-stage[data-level="low"] .friction-meter span:nth-child(1) { background: var(--sev-low); }
.friction-stage[data-level="med"] .friction-meter span:nth-child(-n+2) { background: var(--sev-med); }
.friction-stage[data-level="high"] .friction-meter span { background: var(--sev-high); }

.friction-note {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--gray-light);
}

.sample-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* ---- Finding cards ---- */
.finding {
  margin-top: 1.25rem;
  padding: 1.5rem 1.75rem;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

.finding-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.finding-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--purple);
  margin-right: 0.25rem;
}

.finding-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--white-bright);
  margin-bottom: 1.1rem;
}

.finding-rows {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.75rem 1.25rem;
  margin: 0;
}

.finding-rows dt {
  padding-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-light);
}

.finding-rows dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--white);
}

.finding-rows a {
  color: var(--purple);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- Priority matrix ---- */
.matrix-wrap {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: 1fr auto;
  gap: 0.6rem;
  margin-top: 1.75rem;
}

.matrix-axis {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gray-light);
}

.matrix-axis--y {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-align: center;
}

.matrix-axis--x {
  grid-column: 2;
  text-align: center;
}

.matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 6px;
  min-height: 21rem;
}

.matrix-cell {
  position: relative;
  padding: 1rem 1.1rem;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
}

.matrix-cell--win {
  background: var(--surface-accent);
  border-color: var(--border-accent);
}

.matrix-cell-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-light);
}

.matrix-cell-hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--gray-light);
  opacity: 0.8;
}

.matrix-dot {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--purple);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ---- Columns (roadmap, monthly update) ---- */
.sample-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.sample-columns--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sample-col {
  padding: 1.35rem 1.4rem;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

.sample-col--accent {
  background: var(--surface-accent);
  border-color: var(--border-accent);
}

.sample-col-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--purple);
}

.sample-col-when {
  margin-top: 0.3rem;
  font-size: 0.8rem;
  color: var(--gray-light);
}

.sample-col .sample-list {
  margin-top: 1rem;
}

.sample-col .sample-list li {
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ---- Spec tables ---- */
.spec-table {
  width: 100%;
  margin-top: 1.5rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.spec-table th {
  padding: 0 0.85rem 0.75rem 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-light);
  border-bottom: 1px solid var(--border-medium);
}

.spec-table td {
  padding: 0.85rem 0.85rem 0.85rem 0;
  vertical-align: top;
  line-height: 1.55;
  color: var(--white);
  border-bottom: 1px solid var(--border-default);
}

.spec-table td:first-child {
  font-weight: 500;
  color: var(--white-bright);
  white-space: nowrap;
}

/* ---- Acceptance criteria ---- */
.ac {
  margin-top: 0.85rem;
  padding: 1rem 1.25rem;
  background: var(--surface-card);
  border-left: 2px solid var(--purple);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.ac-id {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--purple);
}

.case-section .ac p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--white);
}

.ac-kw {
  font-family: var(--font-mono);
  font-size: 0.78em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--purple);
}

/* ---- Flow ---- */
.flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 1.75rem;
}

.flow-box {
  width: 100%;
  max-width: 26rem;
  padding: 0.9rem 1.1rem;
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--white);
  background: var(--surface-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
}

.flow-box--question {
  border-style: dashed;
  border-color: var(--border-accent);
  background: var(--surface-accent);
}

.flow-box strong {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--white-bright);
}

.flow-arrow {
  position: relative;
  width: 1px;
  height: 1.75rem;
  background: var(--border-strong);
}

.flow-arrow::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  transform: translateX(-50%) rotate(45deg);
}

.flow-branches {
  display: grid;
  grid-template-columns: repeat(var(--branches, 2), minmax(0, 1fr));
  gap: 0.75rem;
  width: 100%;
}

.flow-branches .flow-box {
  max-width: none;
  text-align: left;
}

.flow-branch-label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--purple);
}

/* ---- Prototype ---- */
.proto {
  margin-top: 1.75rem;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  overflow: hidden;
}

.proto-chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-default);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--gray-light);
}

.proto-chrome i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-strong);
}

.proto-chrome span {
  margin-left: 0.6rem;
}

.proto-states {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-default);
  background: var(--surface-accent);
}

.proto-states-label {
  margin-right: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-light);
}

.proto-state {
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-light);
  background: none;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.proto-state:hover {
  color: var(--white-bright);
  border-color: var(--border-accent-hover);
}

.proto-state[aria-pressed="true"] {
  color: #fff;
  background: var(--purple);
  border-color: var(--purple);
}

.proto-body {
  padding: 1.5rem 1.5rem 1.75rem;
}

.proto-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem 1rem;
}

.proto-ref {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--gray-light);
}

.proto-title {
  margin-top: 0.3rem;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  line-height: 1.25;
  font-weight: 600;
  color: var(--white-bright);
}

.proto-sub {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: var(--gray-light);
}

.proto-status {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
  color: var(--sev-med);
}

.proto-status[data-tone="warn"] { color: var(--sev-high); }
.proto-status[data-tone="done"] { color: var(--sev-low); }

.proto-banner {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.06);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--white);
}

.proto-banner strong {
  color: var(--white-bright);
  font-weight: 600;
}

.proto-banner[hidden] {
  display: none;
}

.proto-timeline {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.proto-step {
  position: relative;
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0 0.9rem;
  padding-bottom: 1.25rem;
}

.proto-step:last-child {
  padding-bottom: 0;
}

.proto-step::before {
  content: '';
  position: absolute;
  top: 1.5rem;
  bottom: 0.15rem;
  left: calc(0.75rem - 0.5px);
  width: 1px;
  background: var(--border-medium);
}

.proto-step:last-child::before {
  display: none;
}

.proto-dot {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  line-height: 1;
  color: var(--gray-light);
  background: var(--bg);
}

.proto-step[data-status="done"] .proto-dot {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}

.proto-step[data-status="current"] .proto-dot {
  border-color: var(--sev-med);
  box-shadow: 0 0 0 4px rgba(167, 139, 250, 0.15);
}

.proto-step[data-status="overdue"] .proto-dot {
  border-color: var(--sev-high);
  color: var(--sev-high);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
}

.proto-step[data-status="returned"] .proto-dot {
  border-color: var(--sev-high);
  color: var(--sev-high);
}

.proto-step-name {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--white-bright);
}

.proto-step-meta {
  margin-top: 0.15rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--gray-light);
}

.proto-step[data-status="overdue"] .proto-step-meta {
  color: var(--sev-high);
}

.proto-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-default);
}

.proto-btn {
  padding: 0.6rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: #fff;
  background: var(--purple);
  border: 1px solid var(--purple);
  border-radius: var(--radius-full);
  cursor: pointer;
}

.proto-btn--ghost {
  color: var(--white);
  background: none;
  border-color: var(--border-strong);
}

.proto-btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.proto-note {
  font-size: 0.8rem;
  color: var(--gray-light);
}

.proto-toast {
  min-height: 1.2rem;
  font-size: 0.8rem;
  color: var(--sev-low);
}

/* ---- Roadmap (Orbit) ---- */
.roadmap-scroll {
  margin-top: 1.75rem;
  overflow-x: auto;
}

.roadmap {
  display: grid;
  grid-template-columns: 8.5rem repeat(6, minmax(0, 1fr));
  gap: 0.45rem 0.35rem;
  min-width: 40rem;
}

.roadmap-month {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-light);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-medium);
}

.roadmap-lane {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--purple);
}

.roadmap-bar {
  padding: 0.55rem 0.7rem;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--white);
  background: var(--surface-accent);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
}

.roadmap-bar--muted {
  background: var(--surface-card);
  border-color: var(--border-default);
  color: var(--gray-light);
}

/* ---- Guidelines (Orbit) ---- */
.guideline-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}

.guideline {
  padding: 1rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  background: var(--surface-card);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--white);
}

.guideline--do { border-top: 2px solid var(--sev-low); }
.guideline--dont { border-top: 2px solid var(--sev-high); }

.guideline-label {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.guideline--do .guideline-label { color: var(--sev-low); }
.guideline--dont .guideline-label { color: var(--sev-high); }

/* ---- Footer: call to action and the other samples ---- */
/* Takes its look from the featured package card (Ignite) */
.sample-cta {
  margin-top: 3rem;
  text-align: center;
}

.sample-cta-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.2;
  text-wrap: balance;
  font-weight: 600;
  color: var(--white-bright);
}

.sample-cta p {
  margin: 0.6rem auto 0;
  max-width: 30rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--gray-light);
}

.sample-cta .package-cta {
  margin-top: 1.5rem;
}

.sample-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.sample-nav a {
  display: block;
  padding: 1rem 1.15rem;
  text-decoration: none;
  background: var(--surface-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: border-color 0.3s ease;
}

.sample-nav a:hover {
  border-color: var(--border-accent-hover);
}

.sample-nav a[aria-current="page"] {
  border-color: var(--border-accent);
  background: var(--surface-accent);
}

.sample-nav-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--purple);
}

.sample-nav-title {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--font-heading);
  line-height: 1.3;
  font-weight: 600;
  color: var(--white-bright);
}

/* ---- Floating inquiry button ---- */
.sample-float-cta {
  position: fixed;
  right: max(2rem, env(safe-area-inset-right, 0px));
  bottom: max(2rem, env(safe-area-inset-bottom, 0px));
  z-index: 100;
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fff;
  background: var(--purple);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 24px rgba(108, 92, 231, 0.35);
  transition: background 0.3s ease, transform 0.3s ease;
}

.sample-float-cta:hover {
  background: var(--purple-deep);
  transform: translateY(-2px);
}

.sample-float-cta:focus-visible {
  outline: 2px solid var(--white-bright);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .sample-float-cta,
  .sample-float-cta:hover {
    transition: none;
    transform: none;
  }
}

/* ---- Small screens ---- */
@media (max-width: 900px) {
  .friction-map { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .sample-page .case-content { padding-top: 6rem; }
  .sample-float-cta {
    right: max(1.25rem, env(safe-area-inset-right, 0px));
    bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
  }
  .friction-map { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .finding { padding: 1.25rem; }
  .finding-rows { grid-template-columns: 1fr; gap: 0.2rem; }
  .finding-rows dd { margin-bottom: 0.65rem; }
  .matrix { min-height: 18rem; }
  .sample-columns,
  .guideline-pair,
  .sample-nav { grid-template-columns: 1fr; }
  .flow-branches { grid-template-columns: 1fr; }
  .proto-body { padding: 1.25rem; }

  /* Tables become stacked rows, labelled from data-label */
  .spec-table thead { display: none; }
  .spec-table tr { display: block; padding: 0.85rem 0; border-bottom: 1px solid var(--border-default); }
  .spec-table td { display: block; padding: 0.2rem 0; border: none; white-space: normal; }
  .spec-table td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--gray-light);
  }
}

/* ---- Print / PDF ---- */
@media print {
  @page {
    size: A4;
    margin: 14mm 12mm;
  }

  html,
  body {
    background: var(--bg) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .grain,
  .case-back,
  .scroll-progress,
  .proto-states,
  .proto-actions,
  .proto-toast,
  .sample-float-cta,
  .sample-cta,
  .sample-nav {
    display: none !important;
  }

  .sample-page .case-content {
    max-width: none;
    padding: 0;
  }

  .case-header {
    margin-bottom: 1.5rem;
  }

  .case-section {
    padding: 1.25rem 0;
  }

  .matrix {
    min-height: 16rem;
  }

  /* The shorter matrix needs the hint on the label's line to keep dots clear */
  .matrix-cell-hint {
    display: inline;
    margin-left: 0.5rem;
  }

  .case-meta-blocks,
  .sample-stats {
    grid-template-columns: 1fr 1fr;
  }

  .screen-only {
    display: none !important;
  }

  /* Tighter prototype so it fits on the page with its intro */
  .proto {
    margin-top: 1.25rem;
  }

  .proto-body {
    padding: 1.25rem 1.5rem;
  }

  .proto-step {
    padding-bottom: 0.9rem;
  }

  .finding,
  .sample-shot,
  .friction-stage,
  .sample-stat,
  .sample-col,
  .matrix-wrap,
  .ac,
  .proto,
  .flow,
  .guideline-pair,
  .spec-table tr,
  .roadmap-scroll {
    break-inside: avoid;
  }

  /* Keep section labels and intros on the same page as what they introduce */
  .case-section .detail-label,
  .case-section .detail-label + p,
  .case-section h4 {
    break-after: avoid;
  }

  .case-section .detail-label + p {
    break-inside: avoid;
  }
}