/* ========================================
   CASE STUDY PAGE
   ======================================== */

:root {
  --transition-luxury: 800ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --section-pad: clamp(48px, 6vw, 72px);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   CASE HEADER
   ======================================== */
.case-header {
  padding: clamp(48px, 6vw, 80px) 0 var(--space-10);
  position: relative;
  overflow: hidden;
}
.case-header::before {
  content: '';
  position: absolute; top: -40%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(137, 0, 255, 0.04) 0%, transparent 70%);
  pointer-events: none;
}
.case-header__breadcrumb {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--fs-xs); color: var(--color-gray-400); margin-bottom: var(--space-6);
}
.case-header__breadcrumb a {
  color: var(--color-gray-400); transition: color var(--transition-fast);
}
.case-header__breadcrumb a:hover { color: var(--color-secondary); }
.case-header__back {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--fs-sm); font-weight: var(--fw-medium);
  color: var(--color-secondary); margin-bottom: var(--space-8);
  transition: gap var(--transition-fast);
}
.case-header__back:hover { gap: var(--space-3); }
.case-header__back .material-symbols-rounded { font-size: 18px; }
.case-header__top {
  display: flex; align-items: center; gap: var(--space-4);
  flex-wrap: wrap; margin-bottom: var(--space-6);
}
.case-header__category {
  display: inline-flex; align-items: center;
  font-size: 0.7rem; font-weight: var(--fw-semibold);
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  background: rgba(0, 160, 100, 0.08); color: #00885E;
}
.case-header__badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 0.65rem; font-weight: var(--fw-semibold);
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 5px 12px; border-radius: var(--radius-full);
  background: rgba(137, 0, 255, 0.08); color: var(--color-secondary);
}
.case-header__badge .material-symbols-rounded { font-size: 14px; }
.case-header__date {
  font-size: var(--fs-xs); color: var(--color-gray-400);
  display: flex; align-items: center; gap: var(--space-2);
}
.case-header__date .material-symbols-rounded { font-size: 16px; }
.case-header__title {
  font-size: clamp(2rem, 1.4rem + 3vw, 3.2rem);
  font-weight: var(--fw-extrabold); line-height: 1.1;
  color: var(--color-primary); max-width: 860px;
  margin-bottom: var(--space-4); letter-spacing: -0.03em;
}
.case-header__subtitle {
  font-size: var(--fs-lg); font-weight: var(--fw-light);
  color: var(--color-gray-500); line-height: var(--lh-relaxed); max-width: 640px;
}

/* ========================================
   HERO IMAGE
   ======================================== */
.case-hero-image { padding: 0 0 var(--space-16); }
.case-hero-image__inner {
  border-radius: 20px; overflow: hidden; position: relative;
  box-shadow: 0 24px 80px rgba(18, 0, 31, 0.12);
}
.case-hero-image__inner img {
  width: 100%; height: auto; display: block;
  aspect-ratio: 16 / 9; object-fit: cover;
}
.case-hero-image__overlay {
  position: absolute; bottom: 0; left: 0; right: 0; height: 40%;
  background: linear-gradient(to top, rgba(18, 0, 31, 0.3), transparent);
  pointer-events: none;
}

/* ========================================
   KPI SECTION
   ======================================== */
.case-kpis { padding: 0 0 var(--section-pad); }
.case-kpis__grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4);
}
.case-kpi {
  text-align: center; padding: var(--space-8) var(--space-4);
  background: var(--color-white); border: 1px solid var(--color-gray-100);
  border-radius: 16px; transition: all var(--transition-luxury);
}
.case-kpi:hover {
  border-color: rgba(137, 0, 255, 0.12);
  box-shadow: 0 12px 40px rgba(18, 0, 31, 0.06);
  transform: translateY(-3px);
}
.case-kpi__value {
  font-family: var(--font-primary);
  font-size: clamp(1.6rem, 1rem + 2vw, 2.4rem);
  font-weight: var(--fw-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.1; margin-bottom: var(--space-2);
}
.case-kpi__label {
  font-size: var(--fs-xs); font-weight: var(--fw-light);
  color: var(--color-gray-500); line-height: var(--lh-normal);
}
.case-kpi--highlight {
  background: var(--color-primary); border-color: var(--color-primary);
}
.case-kpi--highlight .case-kpi__value {
  background: linear-gradient(135deg, #D6BFFF, #FFFFFF);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.case-kpi--highlight .case-kpi__label { color: var(--color-gray-400); }
.case-kpi--highlight:hover { border-color: var(--color-secondary); }

/* ========================================
   CONTENT SECTIONS
   ======================================== */
.case-section { padding: var(--section-pad) 0; }
.case-section--alt { background: var(--color-gray-50); }
.case-section__header { max-width: 720px; margin-bottom: var(--space-12); }
.case-section__label {
  font-size: var(--fs-xs); font-weight: var(--fw-semibold);
  color: var(--color-secondary); text-transform: uppercase;
  letter-spacing: 0.1em; margin-bottom: var(--space-6);
}
.case-section__title {
  font-size: var(--fs-3xl); font-weight: var(--fw-bold);
  color: var(--color-primary); line-height: var(--lh-tight); letter-spacing: -0.02em;
}

/* ========================================
   CONCEPT PILLARS
   ======================================== */
.pillars__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6);
}
.pillar-card {
  padding: var(--space-8); background: var(--color-white);
  border: 1px solid var(--color-gray-100); border-radius: 20px;
  transition: all var(--transition-luxury); position: relative; overflow: hidden;
}
.pillar-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-primary); opacity: 0; transition: opacity var(--transition-luxury);
}
.pillar-card:hover {
  border-color: rgba(137, 0, 255, 0.1);
  box-shadow: 0 16px 48px rgba(18, 0, 31, 0.06);
  transform: translateY(-4px);
}
.pillar-card:hover::before { opacity: 1; }
.pillar-card__icon {
  width: 48px; height: 48px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(137, 0, 255, 0.08), rgba(240, 0, 185, 0.06));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-5); color: var(--color-secondary);
}
.pillar-card__icon .material-symbols-rounded { font-size: 22px; }
.pillar-card__title {
  font-size: var(--fs-lg); font-weight: var(--fw-bold);
  color: var(--color-primary); margin-bottom: var(--space-3); line-height: var(--lh-snug);
}
.pillar-card__desc {
  font-size: var(--fs-sm); font-weight: var(--fw-light);
  color: var(--color-gray-500); line-height: var(--lh-relaxed);
}

/* ========================================
   MOMENTS FORTS
   ======================================== */
.moments__list {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6);
}
.moment-card {
  display: flex; align-items: flex-start; gap: var(--space-5);
  padding: var(--space-6) var(--space-8); background: var(--color-white);
  border: 1px solid var(--color-gray-100); border-radius: 16px;
  transition: all var(--transition-luxury);
}
.moment-card:hover {
  border-color: rgba(137, 0, 255, 0.1);
  box-shadow: 0 8px 32px rgba(18, 0, 31, 0.05);
  transform: translateY(-2px);
}
.moment-card__icon {
  width: 44px; height: 44px; min-width: 44px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(137, 0, 255, 0.08), rgba(240, 0, 185, 0.06));
  display: flex; align-items: center; justify-content: center; color: var(--color-secondary);
}
.moment-card__icon .material-symbols-rounded { font-size: 20px; }
.moment-card__title {
  font-size: var(--fs-base); font-weight: var(--fw-semibold);
  color: var(--color-primary); margin-bottom: var(--space-1); line-height: var(--lh-snug);
}
.moment-card__desc {
  font-size: var(--fs-sm); font-weight: var(--fw-light);
  color: var(--color-gray-500); line-height: var(--lh-relaxed);
}
.moment-card--gifts {
  grid-column: 1 / -1; background: var(--color-primary); border-color: var(--color-primary);
}
.moment-card--gifts:hover {
  border-color: var(--color-secondary);
  box-shadow: 0 12px 40px rgba(18, 0, 31, 0.15);
}
.moment-card--gifts .moment-card__icon { background: rgba(255, 255, 255, 0.1); color: #D6BFFF; }
.moment-card--gifts .moment-card__title { color: var(--color-white); }
.moment-card--gifts .moment-card__desc { color: var(--color-gray-400); }

/* ========================================
   WHY COLLABORATION
   ======================================== */
.collab__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6);
}
.collab-card {
  padding: var(--space-6); background: var(--color-gray-50);
  border: 1px solid var(--color-gray-100); border-radius: 16px;
  transition: all var(--transition-luxury);
}
.collab-card:hover {
  background: var(--color-white); border-color: rgba(137, 0, 255, 0.1);
  box-shadow: 0 12px 40px rgba(18, 0, 31, 0.06); transform: translateY(-3px);
}
.collab-card__number {
  font-size: var(--fs-xs); font-weight: var(--fw-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: var(--space-3);
}
.collab-card__title {
  font-size: var(--fs-base); font-weight: var(--fw-bold);
  color: var(--color-primary); margin-bottom: var(--space-2); line-height: var(--lh-snug);
}
.collab-card__desc {
  font-size: var(--fs-sm); font-weight: var(--fw-light);
  color: var(--color-gray-500); line-height: var(--lh-relaxed);
}

/* ========================================
   TESTIMONIAL
   ======================================== */
.case-testimonial { padding: var(--section-pad) 0; background: var(--color-gray-50); }
.case-testimonial__inner { max-width: 800px; margin: 0 auto; text-align: center; }
.case-testimonial__mark {
  font-family: var(--font-primary); font-size: 4rem; line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: var(--space-6);
}
.case-testimonial__text {
  font-size: var(--fs-xl); font-weight: var(--fw-light);
  color: var(--color-gray-700); line-height: 1.7;
  font-style: italic; margin-bottom: var(--space-8);
}
.case-testimonial__divider {
  width: 60px; height: 2px; background: var(--gradient-primary);
  margin: 0 auto var(--space-6);
}
.case-testimonial__author {
  font-size: var(--fs-base); font-weight: var(--fw-semibold); color: var(--color-primary);
}
.case-testimonial__role {
  font-size: var(--fs-sm); font-weight: var(--fw-light);
  color: var(--color-gray-400); margin-top: var(--space-1);
}

/* ========================================
   FINAL CTA
   ======================================== */
.case-cta { padding: var(--section-pad) 0; text-align: center; }
.case-cta__inner {
  max-width: 640px; margin: 0 auto;
  padding: var(--space-16) var(--space-8);
  background: var(--color-primary); border-radius: 24px;
  position: relative; overflow: hidden;
}
.case-cta__inner::before {
  content: ''; position: absolute; top: 0; right: 0; bottom: 0; width: 60%;
  background: linear-gradient(135deg, transparent, rgba(137, 0, 255, 0.25));
  pointer-events: none;
}
.case-cta__inner::after {
  content: ''; position: absolute; bottom: -40%; left: -20%;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 0, 185, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.case-cta__title {
  font-size: var(--fs-2xl); font-weight: var(--fw-bold);
  color: var(--color-white); margin-bottom: var(--space-4);
  position: relative; z-index: 1;
}
.case-cta__subtitle {
  font-size: var(--fs-base); font-weight: var(--fw-light);
  color: var(--color-gray-400); margin-bottom: var(--space-8);
  position: relative; z-index: 1;
}
.case-cta .btn { position: relative; z-index: 1; }

/* ========================================
   PORTRAIT HERO (9:16 video + KPIs side-by-side)
   ======================================== */
.case-hero-image--portrait { padding: 0 0 var(--section-pad); }
.case-hero-portrait {
  display: grid; grid-template-columns: 40% 1fr; gap: var(--space-10);
  align-items: center;
}
.case-hero-portrait__media {
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 24px 80px rgba(18, 0, 31, 0.12);
}
.case-hero-portrait__media img {
  width: 100%; height: auto; display: block;
  aspect-ratio: 9 / 16; object-fit: cover;
}
.case-hero-portrait__kpis {
  display: flex; flex-direction: column; gap: var(--space-4);
}
.case-hero-portrait__kpis .case-kpi { text-align: left; }

/* ========================================
   DIVIDER
   ======================================== */
.divider {
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gray-200), transparent);
}
/* Collapse spacing around dividers */
.divider + .case-section,
.divider + .case-section--alt {
  padding-top: clamp(24px, 3vw, 36px);
}
.case-section:has(+ .divider),
.case-kpis:has(+ .divider),
.case-hero-image:has(+ .divider),
.case-hero-image--portrait:has(+ .divider) {
  padding-bottom: clamp(24px, 3vw, 36px);
}
/* Collapse consecutive testimonials */
.case-testimonial + .case-testimonial {
  padding-top: 0;
}
/* Collapse between last section and testimonial */
.case-section + .case-testimonial {
  padding-top: clamp(24px, 3vw, 36px);
}
/* Reduce bottom of section before testimonial */
.case-section:has(+ .case-testimonial) {
  padding-bottom: clamp(24px, 3vw, 36px);
}
/* Reduce gap between last testimonial and CTA */
.case-testimonial + .case-cta {
  padding-top: clamp(24px, 3vw, 36px);
}
/* Reduce bottom of last testimonial before CTA */
.case-testimonial:has(+ .case-cta) {
  padding-bottom: clamp(24px, 3vw, 36px);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .case-kpis__grid { grid-template-columns: repeat(3, 1fr); }
  .pillars__grid { grid-template-columns: repeat(2, 1fr); }
  .collab__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .case-kpis__grid { grid-template-columns: repeat(2, 1fr); }
  .case-kpis__grid .case-kpi:last-child { grid-column: 1 / -1; }
  .pillars__grid { grid-template-columns: 1fr; }
  .moments__list { grid-template-columns: 1fr; }
  .collab__grid { grid-template-columns: 1fr; }
  .case-header__title { font-size: clamp(1.6rem, 1.2rem + 2.5vw, 2.4rem); }
  .case-testimonial__text { font-size: var(--fs-base); }
  .case-hero-portrait { grid-template-columns: 1fr; }
  .case-hero-portrait__media { max-width: 320px; margin: 0 auto; }
  .case-hero-portrait__kpis .case-kpi { text-align: center; }
}

@media (max-width: 480px) {
  .case-kpis__grid { grid-template-columns: 1fr; }
  .case-kpis__grid .case-kpi:last-child { grid-column: auto; }
  .pillar-card { padding: var(--space-6); }
  .moment-card { padding: var(--space-5) var(--space-6); }
  .case-cta__inner { padding: var(--space-10) var(--space-6); }
}