/* ============================================================
   STAYRATE — case-studies.css
   Editorial two-column magazine layout.
   Inherits all tokens from style.css.

   Structure:
     1.  Page Intro
     2.  Full-width Divider
     3.  Case Study Section (.cs-study)
     4.  Two-Column Grid (.cs-study-inner)
     5.  Left Column — index, title, image, story, Airbnb btn
     6.  Right Column — tags, charts, big stats, second img, CTA
     7.  Before/After Bar Charts
     8.  Big Stat Callouts
     9.  Airbnb Button
    10.  Active Nav State
    11.  Responsive
============================================================ */


/* ============================================================
   1. PAGE INTRO
   Left-aligned editorial opener — title left, sub right
============================================================ */
.cs-intro {
  background-color: var(--color-white);
  padding: var(--space-16) 0 var(--space-12);
}

.cs-intro-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.cs-intro-title {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-black);
  line-height: var(--lh-tight);
  max-width: 700px;
  margin: 0;
}

.cs-intro-sub {
  font-size: var(--fs-md);
  color: var(--color-gray-muted);
  line-height: var(--lh-relaxed);
  max-width: 540px;
}


/* ============================================================
   2. FULL-WIDTH DIVIDER
   Heavy rule between each case study — like a magazine spread
============================================================ */
.cs-divider {
  width: 100%;
  height: 2px;
  background: var(--color-black);
}


/* ============================================================
   3. CASE STUDY SECTION
============================================================ */
.cs-study {
  background-color: var(--color-white);
  padding: var(--space-16) 0;
}

/* Alternating light background for even studies */
.cs-study:nth-child(even) {
  background-color: var(--color-off-white);
}


/* ============================================================
   4. TWO-COLUMN GRID
   Mobile: single column stack
   Desktop: ~40% left / ~60% right
============================================================ */
.cs-study-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}


/* ============================================================
   5. LEFT COLUMN
============================================================ */
.cs-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
}

/* Large editorial case number — sits above the title */
.cs-index {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: var(--fw-extrabold);
  color: var(--color-black);
  opacity: 0.07;
  line-height: 1;
  display: block;
  letter-spacing: -0.04em;
  margin-bottom: calc(-1 * var(--space-10)); /* overlap title below it */
  user-select: none;
}

/* Property title — large, expressive */
.cs-title {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-black);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0;
  position: relative; /* sits on top of the faded index number */
  z-index: 1;
}

/* Hero image — full width, square-ish crop */
.cs-hero-img-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.cs-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s ease;
}

.cs-hero-img-wrap:hover .cs-hero-img {
  transform: scale(1.03);
}

/* Story text block */
.cs-story-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cs-story {
  font-size: var(--fs-sm);
  color: var(--color-gray-muted);
  line-height: var(--lh-relaxed);
  margin: 0;
}


/* ============================================================
   6. RIGHT COLUMN
============================================================ */
.cs-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* Property tags */
.cs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.cs-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  font-family: var(--font-heading);
  color: var(--color-gray-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Second (smaller) property image in right column */
.cs-second-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-lg);
  position: relative;
}

.cs-second-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.7s ease;
}

.cs-second-img-wrap:hover .cs-second-img {
  transform: scale(1.03);
}

/* ── Slideshow ── */
.cs-slideshow {
  cursor: pointer;
}

/* Disable the generic hover-scale on slideshow containers */
.cs-slideshow:hover .cs-second-img {
  transform: none;
}

/* All slides stacked; use a single <div> height anchor via padding trick */
.cs-slideshow .cs-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.7s ease;
  z-index: 0;
}

/* First slide is the height anchor — stays in normal flow */
.cs-slideshow .cs-slide:first-child {
  position: relative;
  opacity: 0; /* hidden by default; JS adds --active to show it */
}

.cs-slideshow .cs-slide--active {
  opacity: 1;
  z-index: 1;
}

/* Dot navigation */
.cs-slideshow-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.cs-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.7);
  transition: background 0.3s ease, transform 0.3s ease;
  display: block;
}

.cs-dot--active {
  background: #ffffff;
  transform: scale(1.25);
}

/* ── Big stat count-up — flash-in effect ── */
.cs-big-num[data-countup] {
  display: inline-block;
}

.cs-big-num.countup-animating {
  animation: numPop 0.3s ease-out both;
}

@keyframes numPop {
  0%   { transform: scale(0.92); opacity: 0.4; }
  60%  { transform: scale(1.06); }
  100% { transform: scale(1);    opacity: 1;   }
}

/* CTA block at the bottom of right column */
.cs-cta-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-border);
}

.cs-cta-text {
  font-size: var(--fs-sm);
  color: var(--color-gray-muted);
  font-style: italic;
}


/* ============================================================
   7. BEFORE / AFTER BAR CHARTS
============================================================ */
.cs-metrics-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-off-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-border);
}

/* Legend */
.cs-chart-legend {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-gray-border);
  margin-bottom: var(--space-1);
}

.cs-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  font-family: var(--font-heading);
  color: var(--color-gray-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.cs-legend-item::before {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.cs-legend-before::before {
  background: #E8E6DE;
  border: 1.5px solid #C2BFB7;
}

.cs-legend-after::before {
  background: var(--color-accent);
}

/* One metric row */
.cs-chart-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cs-chart-label {
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  color: var(--color-black);
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.cs-chart-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Bar track + value label in a row */
.cs-bar-group {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Bar track */
.cs-bar {
  flex: 1;
  height: 22px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: #ECEAE3;
}

.cs-bar--before {
  background: #ECEAE3;
  border: 1px solid #D5D2CA;
}

.cs-bar--after {
  background: rgba(245, 166, 35, 0.12);
  border: 1px solid rgba(245, 166, 35, 0.25);
}

/* Animated fill — starts at 0, JS sets final width */
.cs-bar-fill {
  height: 100%;
  width: 0;
  border-radius: var(--radius-full);
  transition: width 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

.cs-bar--before .cs-bar-fill {
  background: #FFFFFF;
  border: 1.5px solid #C2BFB7;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.cs-bar--after .cs-bar-fill {
  background: linear-gradient(90deg, #F5A623 0%, #FBBF47 100%);
  box-shadow: 0 2px 8px rgba(245, 166, 35, 0.3);
}

/* Numeric value to the right of bar */
.cs-bar-value {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  white-space: nowrap;
  min-width: 72px;
  text-align: right;
  line-height: 1;
}

.cs-bar-value--before {
  color: var(--color-gray-muted);
}

.cs-bar-value--after {
  color: var(--color-accent);
}


/* ============================================================
   8. BIG STAT CALLOUTS
   Three headline numbers side-by-side, magazine-style
============================================================ */
.cs-big-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  padding: var(--space-5) 0;
  border-top: 2px solid var(--color-black);
  border-bottom: 2px solid var(--color-black);
}

.cs-big-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
}

/* Add a vertical separator between stat items (not after last) */
.cs-big-stat:not(:last-child) {
  border-right: 1px solid var(--color-gray-border);
}

.cs-big-num {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  line-height: 1;
  letter-spacing: -0.03em;
}

.cs-big-label {
  font-size: var(--fs-xs);
  color: var(--color-gray-muted);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: var(--lh-snug);
}


/* ============================================================
   9. AIRBNB BUTTON
   Pill-shaped, Airbnb red, with brand logo
============================================================ */
.btn-airbnb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background-color: #FF385C;
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-decoration: none;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
  align-self: flex-start; /* don't stretch to full width */
  transition: background-color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
  box-shadow: 0 2px 10px rgba(255, 56, 92, 0.3);
}

.btn-airbnb:hover {
  background-color: #E0314F;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 56, 92, 0.4);
}

.btn-airbnb svg {
  flex-shrink: 0;
}


/* ============================================================
   10. ACTIVE NAV LINK STATE
============================================================ */
.nav-link--active {
  color: var(--color-black) !important;
}

.nav-link--active::after {
  width: 100% !important;
}


/* ============================================================
   11. RESPONSIVE
============================================================ */

/* ── Tablet 640px+ ── */
@media (min-width: 640px) {
  .cs-intro-title {
    font-size: var(--fs-4xl);
  }

  .cs-title {
    font-size: var(--fs-5xl);
  }

  .cs-index {
    font-size: 8rem;
  }

  .cs-big-num {
    font-size: var(--fs-4xl);
  }

  /* Intro: side-by-side on tablet */
  .cs-intro-inner {
    flex-direction: row;
    align-items: flex-end;
    gap: var(--space-10);
  }

  .cs-intro-text {
    flex: 1;
  }

  .cs-intro-sub {
    flex: 0 0 300px;
    margin-bottom: var(--space-2);
  }
}

/* ── Desktop 1024px+ ── */
@media (min-width: 1024px) {

  .cs-intro {
    padding: var(--space-20) 0 var(--space-16);
  }

  .cs-intro-title {
    font-size: var(--fs-5xl);
  }

  /* Two-column grid: 40% | 60% */
  .cs-study-inner {
    grid-template-columns: 2fr 3fr;
    gap: var(--space-16);
    align-items: start;
  }

  /* Left col is sticky while right scrolls */
  .cs-left {
    position: sticky;
    top: 88px; /* below fixed header */
  }

  .cs-title {
    font-size: clamp(3rem, 4.5vw, 4.5rem);
  }

  .cs-index {
    font-size: clamp(6rem, 10vw, 10rem);
  }

  .cs-story {
    font-size: var(--fs-base);
  }

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

  .cs-bar {
    height: 26px;
  }

  .cs-big-num {
    font-size: var(--fs-4xl);
  }
}

/* ── Wide 1280px+ ── */
@media (min-width: 1280px) {
  .cs-title {
    font-size: 4.5rem;
  }

  .cs-index {
    font-size: 10rem;
  }
}