/* ============================================================
   CASE STUDY — Layout & Typography
   ============================================================ */

.cs-page {
  max-width: 1060px;
  margin-inline: auto;
  padding-inline: var(--page-gutter);
  padding-bottom: var(--space-9);
}

/* Desktop-only line break */
.cs-br-desktop {
  display: block;
}

@media (max-width: 768px) {
  .cs-br-desktop {
    display: none;
  }
}


/* Back link */
.cs-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: var(--space-4) 0;
  transition: color 0.15s;
}

.cs-back:hover {
  color: var(--color-text);
}

.cs-back::before {
  content: "\2190"; /* left arrow */
}


/* Width containers — page wrapper handles max-width */
.cs-narrow,
.cs-wide {
  /* Content fills the page wrapper */
}

/* Full-bleed: breaks out of cs-page max-width */
.cs-full {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding-inline: var(--page-gutter);
}

.cs-full iframe {
  width: 100%;
  height: 80vh;
  border: none;
  background: transparent;
}

.cs-iframe--blueprint {
  height: 100vh;
  background: transparent;
}

.cs-iframe--diagram {
  width: 100vw;
  margin-left: calc(-1 * var(--page-gutter));
  aspect-ratio: 1440 / 1208;
}

.cs-video {
  width: 100%;
  max-width: 660px;
  display: block;
  margin-inline: auto;
  border-radius: 12px;
}


/* ============================================================
   HEADER
   ============================================================ */

.cs-header {
  padding-block: var(--space-7) var(--space-6);
  margin-bottom: var(--space-5);
  text-align: left;
  max-width: 720px;
  margin-inline: auto;
}

.cs-header__logo {
  height: 28px;
  width: auto;
  margin-bottom: var(--space-3);
}

[data-color-scheme='dark'] .cs-header__logo {
  filter: invert(1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme='light']) .cs-header__logo {
    filter: invert(1);
  }
}

.cs-header__eyebrow {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.cs-header__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.cs-header__subtitle {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-6);
}

.cs-header__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.cs-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25em 0.7em;
  font-size: 0.75rem;
  font-weight: 500;
  color: #fff;
  background: var(--color-text);
  border-radius: 99px;
  white-space: nowrap;
}


/* ============================================================
   SECTIONS
   ============================================================ */

.cs-section {
  padding-block: var(--space-8);
}

.cs-section + .cs-section {
  border-top: none;
}


/* ============================================================
   EYEBROW + HEADINGS
   ============================================================ */

.cs-eyebrow {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 720px;
  margin-inline: auto;
}

.cs-h2 {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 720px;
  margin-inline: auto;
}


/* ============================================================
   BODY TEXT
   ============================================================ */

.cs-body {
  max-width: 720px;
  margin-inline: auto;
}

.cs-body p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-5);
}

.cs-body p:last-child {
  margin-bottom: 0;
}


/* ============================================================
   HERO BLOCK — Two-column screenshots + captions
   ============================================================ */

.cs-hero-block {
  margin-bottom: var(--space-7);
}

.cs-hero-block__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: center;
  margin-bottom: var(--space-5);
}

.cs-hero-block__desktop {
  width: 100%;
  border-radius: 12px;
  background: var(--color-surface);
}

.cs-hero-block__phone {
  max-width: 260px;
  border-radius: 12px;
  background: var(--color-surface);
}

.cs-hero-block__captions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.cs-caption__title {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.cs-caption__text {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}


/* ============================================================
   CALLOUT BOX
   ============================================================ */

.cs-callout {
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-bg));
  border-left: 3px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-6);
  max-width: 720px;
  margin-inline: auto;
}

.cs-callout p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-subtle);
  margin: 0;
}


/* ============================================================
   PULL QUOTE
   ============================================================ */

.cs-pull-quote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-6);
  margin-block: var(--space-7);
  max-width: 720px;
  margin-inline: auto;
}

.cs-pull-quote p {
  font-size: 1.25rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--color-text);
  font-weight: 400;
}


/* ============================================================
   WIDE IMAGE / IFRAME
   ============================================================ */

.cs-wide-image {
  margin-block: var(--space-7);
}

.cs-wide-image img {
  width: 100%;
  border-radius: 12px;
  background: var(--color-surface);
}

.cs-wide-iframe {
  margin-block: var(--space-7);
}

.cs-wide-iframe iframe {
  width: 100%;
  height: 90vh;
  border: none;
  border-radius: 0;
  background: transparent;
}


/* ============================================================
   STATS ROW
   ============================================================ */

.cs-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-block: var(--space-7);
}

.cs-stat {
  background: var(--color-surface);
  border-radius: 12px;
  padding: var(--space-5) var(--space-6);
}

.cs-stat__number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.cs-stat__label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}


/* ============================================================
   PROGRESSION STRIP (Before -> After)
   ============================================================ */

.cs-progression {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-5);
  align-items: center;
  margin-block: var(--space-7);
}

.cs-progression__item {
  text-align: center;
}

.cs-progression__item img {
  width: 100%;
  border-radius: 12px;
  background: var(--color-surface);
  margin-bottom: var(--space-3);
}

.cs-progression__label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.cs-progression__arrow {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}


/* ============================================================
   STATUS BADGES
   ============================================================ */

.cs-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2em 0.6em;
  border-radius: 99px;
  white-space: nowrap;
}

.cs-badge--live {
  background: #d3f9d8;
  color: #2b8a3e;
}

.cs-badge--wip {
  background: #d0ebff;
  color: #1971c2;
}

/* Dark mode badge adjustments */
[data-color-scheme='dark'] .cs-badge--live {
  background: #1b4332;
  color: #95d5b2;
}

[data-color-scheme='dark'] .cs-badge--wip {
  background: #1a3a5c;
  color: #a5d8ff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme='light']) .cs-badge--live {
    background: #1b4332;
    color: #95d5b2;
  }
  :root:not([data-color-scheme='light']) .cs-badge--wip {
    background: #1a3a5c;
    color: #a5d8ff;
  }
}


/* ============================================================
   TWO-COLUMN GRID (for status blocks)
   ============================================================ */

.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-block: var(--space-6);
}

.cs-two-col__item {
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border-radius: 12px;
}

.cs-two-col__item .cs-badge {
  margin-bottom: var(--space-3);
}

.cs-two-col__text {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-text-subtle);
}


/* ============================================================
   PLACEHOLDER
   ============================================================ */

.cs-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: 12px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-block: var(--space-7);
}


/* ============================================================
   SPACING UTILITIES
   ============================================================ */

.cs-mb-6 { margin-bottom: var(--space-6); }
.cs-mb-7 { margin-bottom: var(--space-7); }


/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  .cs-hero-block__grid {
    grid-template-columns: 1fr;
  }

  .cs-hero-block__phone {
    max-width: 200px;
    justify-self: center;
  }

  .cs-hero-block__captions {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .cs-stats {
    grid-template-columns: 1fr;
  }

  .cs-progression {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cs-progression__arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .cs-two-col {
    grid-template-columns: 1fr;
  }
}