/* ============================================
   CASE STUDIES PAGE
   assets/css/case-studies.css
   ============================================ */

/* ---- HERO ---- */
.ev-cs-hero {
  padding-top: 140px;
  padding-bottom: 40px;
  background: var(--color-white);
}

.ev-cs-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--fw-bold);
  color: var(--color-black);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: var(--space-3) 0 var(--space-4);
}
.ev-cs-hero__title .accent { color: var(--color-primary); }

.ev-cs-hero__subtext {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-muted);
  line-height: var(--lh-relaxed);
  max-width: 520px;
  margin: 0 0 var(--space-6);
}

/* ---- FILTER TABS ---- */
.ev-cs-filters {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-bottom: var(--space-6);
}

.ev-cs-filter {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-body);
  background: #F0F4F8;
  border: 1.5px solid var(--color-border);
  border-radius: 100px;
  padding: 6px 16px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.ev-cs-filter:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.ev-cs-filter--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white) !important;
}

/* ---- ACCORDION LIST ---- */
.ev-cs-list {
  padding-block: 40px 80px;
  background: #F8F9FA;
}

.ev-cs-accordion {
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  gap: 20px;    
}

.ev-cs-item {
  transition: all 0.2s ease;
  background-color: #ffffff;
}
.ev-cs-item:last-child { border-bottom: none; }

/* Hidden by filter */
.ev-cs-item--hidden { display: none; }

/* ---- ITEM HEADER ---- */
.ev-cs-item__header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--color-white);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
}
.ev-cs-item__header:hover { background: rgba(42, 109, 244, 0.12); }
.ev-cs-item__header[aria-expanded="true"] { background: #ffffff;}

.ev-cs-item__header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  flex: 1;
}

.ev-cs-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.68rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 4px;
  white-space: nowrap;
  /* First tag: blue bg */
  background: hsla(220,90%,56%,0.12);
  color: #0060F1;
}
.ev-cs-tag:nth-child(2) {
  background: hsla(0,0%,50%,0.08);
  color: var(--color-muted);
}

.ev-cs-item__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--color-black);
  line-height: 1.4;
}

.ev-cs-item__chevron {
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.ev-cs-item__header[aria-expanded="true"] .ev-cs-item__chevron {
  transform: rotate(180deg);
}

/* ---- ITEM BODY ---- */
.ev-cs-item__body {
  padding: 0 var(--space-6) var(--space-8);
  background: var(--color-white);
}
.ev-cs-item__body[hidden] { display: none; }

/* Stats row */
.ev-cs-stats {
  display: flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-5);
  margin-top: 20px;
  gap: 20px;
}

.ev-cs-stat {
  flex: 1;
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  background: var(--color-off-white);
  text-align: center;
}
.ev-cs-stat:last-child { border-right: none; }

.ev-cs-stat__num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: -0.02em;
}
.ev-cs-stat__lbl {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-muted);
  line-height: 1.4;
}

/* Image */
.ev-cs-image {
  margin-bottom: var(--space-6);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.ev-cs-image img {
  width: 100%;
  object-fit: cover;
  display: block;
}

/* Content 2-col */
.ev-cs-content {
  display: block;
}

.ev-cs-content__left,
.ev-cs-content__right {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.ev-cs-block__label {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 var(--space-3);
}

.ev-cs-block__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-body);
  line-height: var(--lh-relaxed);
}
.ev-cs-block__text p { margin: 0 0 var(--space-2); }
.ev-cs-block__text p:last-child { margin-bottom: 0; }

/* Deliverables */
.ev-cs-deliverables {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.ev-cs-deliverables li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-body);
  line-height: 1.5;
}
.ev-cs-deliverables li::before {
  content: '•';
  color: var(--color-primary);
  font-size: 1rem;
  line-height: 1.4;
  flex-shrink: 0;
}

/* Outcome box */
.ev-cs-outcome {
  background: #fff5f5;
  border: 1.5px solid rgba(192,0,0,0.25);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.ev-cs-outcome__label {
  font-family: var(--font-body);
    font-size: var(--text-base);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 var(--space-3);
}
.ev-cs-outcome__text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-body);
  line-height: var(--lh-relaxed);
  margin: 0;
}

/* Empty state */
.ev-cs-empty {
  text-align: center;
  padding: var(--space-16);
  color: var(--color-muted);
  font-size: var(--text-base);
}

/* ---- CTA DARK ---- */
.ev-cs-cta {
  background: #0D0D1F;
  padding-block: 72px;
  position: relative;
  overflow: hidden;
}
.ev-cs-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(10,10,30,0.95) 0%, rgba(10,10,30,0.70) 55%, rgba(10,10,30,0.15) 100%);
  z-index: 0;
}
.ev-cs-cta__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.ev-cs-cta__content { display: flex; flex-direction: column; gap: var(--space-5); }
.ev-cs-cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: var(--fw-bold);
  color: var(--color-white);
  line-height: 1.15;
  margin: 0;
}
.ev-cs-cta__subtext {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: rgba(255,255,255,0.60);
  line-height: var(--lh-relaxed);
  margin: 0;
}
.ev-cs-cta__btns { display: flex; gap: var(--space-6); flex-wrap: wrap; }
.ev-cs-cta__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  transition: gap 0.2s ease, color 0.15s ease;
}
.ev-cs-cta__link:hover { gap: var(--space-3); color: var(--color-white); }
.ev-cs-cta__link svg { transition: transform 0.2s ease; }
.ev-cs-cta__link:hover svg { transform: translateX(3px); }
.ev-cs-cta__visual { display: flex; justify-content: flex-end; align-items: center; }
.ev-cs-cta__img { max-width: 100%; max-height: 280px; object-fit: cover; border-radius: var(--radius-lg); }
.ev-cs-cta__placeholder { width: 100%; height: 240px;  border-radius: var(--radius-lg); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .ev-cs-cta__inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .ev-cs-cta__visual { justify-content: flex-start; }
}
@media (max-width: 768px) {
  .ev-cs-content { grid-template-columns: 1fr; gap: var(--space-5); }
  .ev-cs-stats { flex-direction: column; }
  .ev-cs-stat { border-right: none; border-bottom: 1px solid var(--color-border); }
  .ev-cs-stat:last-child { border-bottom: none; }
  .ev-cs-image img { height: 200px; }
  .ev-cs-cta { padding-block: var(--space-16); }
  img.ev-cs-cta__img {
    display: none;
}
}