/* ============================================================
   Bizspaces — Case Study Page Styles (PREMIUM)
   ============================================================ */

/* Hero variant */
.hero--case .hero__bg {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-soft) 50%, #004D4D 100%);
  opacity: 1;
}
.hero--case .hero__eyebrow { color: var(--brand-accent-light); }
.hero--case .hero__title-line { color: var(--brand-neutral-0); }
.hero--case .tldr p { color: var(--brand-neutral-100); }
.hero--case .hero__lead { color: var(--brand-neutral-300); }
.hero--case .hero__meta-item { color: var(--brand-neutral-300); }
.hero--case .hero__meta-item strong { color: var(--brand-accent-light); }

/* ============================================================
   CASE STUDY ARTICLES
   ============================================================ */
.case-study {
  margin-bottom: var(--sp-9);
  padding-bottom: var(--sp-9);
  border-bottom: 1px solid var(--brand-line);
}
.case-study:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.case-study__header { margin-bottom: var(--sp-4); }
.case-study__badge {
  display: inline-block;
  font: var(--bz-overline);
  color: var(--brand-accent);
  background: var(--brand-accent-tint);
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-full);
  margin-bottom: var(--sp-2);
}
.case-study__title { font: var(--bz-h3); color: var(--brand-primary); margin: 0 0 var(--sp-1); }
.case-study__meta { font: var(--bz-body); color: var(--brand-neutral-500); margin: 0; }

/* Visuals grid */
.case-study__visuals {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-bottom: var(--sp-5);
}
@media (min-width: 768px) {
  .case-study__visuals { grid-template-columns: 1fr 1fr; }
}
.case-study__visuals--beforeafter { grid-template-columns: 1fr; }
.case-study__visuals--beforeafter .case-img--wide { grid-column: 1 / -1; }

.case-img {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
  background: var(--brand-neutral-100);
  position: relative;
}
.case-img img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}
.case-img:hover img { transform: scale(1.015); }

/* Premium caption */
.case-img__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-3) var(--sp-4);
  background: linear-gradient(180deg, transparent 0%, rgba(3,3,4,0.85) 100%);
  color: var(--brand-neutral-0);
  font: var(--bz-small);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.case-img:hover .case-img__caption,
.case-img:focus-within .case-img__caption {
  opacity: 1;
  transform: translateY(0);
}
.case-img__caption strong { display: block; font: var(--bz-overline); color: var(--brand-accent-light); margin-bottom: 0.25rem; letter-spacing: 0.08em; text-transform: uppercase; }

/* Metrics */
.case-study__metrics {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  margin-bottom: var(--sp-4);
  position: relative;
  overflow: hidden;
}
.case-study__metrics::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-accent), var(--brand-accent-light));
}
.case-study__metrics-title {
  font: var(--bz-h3);
  color: #fff;
  margin: 0 0 var(--sp-4);
  text-align: center;
  position: relative;
}
.case-study__metrics-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: var(--brand-accent);
  margin: var(--sp-2) auto 0;
  border-radius: 1px;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
}
@media (min-width: 768px) { .metrics-grid { grid-template-columns: repeat(4, 1fr); } }
.metric {
  text-align: center;
  padding: var(--sp-4);
  background: rgba(255,255,255,0.04);
  border-radius: var(--r-md);
  border: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.metric:hover { box-shadow: 0 0 20px rgba(0,109,109,0.15); border-color: var(--brand-accent); }
.metric dt {
  font: var(--bz-overline);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--sp-1);
  letter-spacing: 0.05em;
}
.metric dd { margin: 0; font: var(--bz-body); color: #fff; }
.metric__before {
  color: var(--brand-neutral-400);
  text-decoration: line-through;
  margin-right: var(--sp-2);
  font-weight: 400;
}
.metric__after {
  font-weight: 700;
  color: var(--brand-accent);
  font-size: 1.125rem;
}

/* Tech tags */
.case-study__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  justify-content: center;
}
.tech-tag {
  font: var(--bz-small);
  color: var(--brand-neutral-700);
  background: var(--brand-neutral-100);
  border: 1px solid var(--brand-line);
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-full);
  transition: all 0.15s ease;
}
.tech-tag:hover { border-color: var(--brand-accent); color: var(--brand-accent); background: var(--brand-accent-tint); }

/* ============================================================
   TRUST SIGNALS — Preuves de terrain
   ============================================================ */
.section--trust {
  background: var(--brand-primary);
  color: var(--brand-neutral-0);
}
.section--trust .eyebrow { color: var(--brand-accent-light); }
.section--trust .section-title { color: var(--brand-neutral-0); }
.section--trust .section-lead { color: var(--brand-neutral-300); }

.trust-signals {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-7);
  margin-top: var(--sp-6);
}
@media (min-width: 900px) {
  .trust-signals { grid-template-columns: 1fr 1fr; align-items: start; }
}

.trust-signal__title {
  font: var(--bz-h3);
  color: var(--brand-neutral-0);
  margin: 0 0 var(--sp-2);
}
.trust-signal__desc {
  font: var(--bz-body);
  color: var(--brand-neutral-400);
  margin: 0 0 var(--sp-4);
  line-height: 1.7;
}

/* Map wrapper */
.map-wrap,
.timeline-wrap {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-lg);
  background: var(--brand-primary-deep);
  border: 1px solid rgba(255,255,255,0.06);
}
.trust-map,
.trust-timeline {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}
.map-wrap:hover .trust-map,
.timeline-wrap:hover .trust-timeline { transform: scale(1.01); }

/* ============================================================
   AUDIT GRATUIT CARD
   ============================================================ */
.section--cta {
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-soft) 100%);
  color: var(--brand-neutral-0);
}
.section--cta .eyebrow { color: var(--brand-accent-light); }
.section--cta .section-title { color: var(--brand-neutral-0); }
.section--cta .section-lead { color: var(--brand-neutral-300); }

.audit-card { max-width: 720px; margin: 0 auto; text-align: left; }
.audit-card__bullets h3 {
  font: var(--bz-h3);
  color: var(--brand-accent-light);
  margin: 0 0 var(--sp-4);
  position: relative;
  padding-bottom: var(--sp-2);
}
.audit-card__bullets h3::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 50px; height: 2px;
  background: var(--brand-accent);
  border-radius: 1px;
}
.audit-card__bullets ul {
  list-style: none;
  padding: 0; margin: 0 0 var(--sp-6);
}
.audit-card__bullets li {
  font: var(--bz-body);
  color: var(--brand-neutral-100);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-2);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--r-md);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  transition: all 0.2s ease;
}
.audit-card__bullets li:hover {
  background: rgba(0,109,109,0.12);
  border-color: var(--brand-accent);
}
.audit-card__bullets li::before {
  content: '';
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid var(--brand-accent);
  background: transparent;
  margin-top: 2px;
  transition: all 0.2s ease;
}
.audit-card__bullets li:hover::before {
  background: var(--brand-accent);
  box-shadow: 0 0 0 4px var(--brand-accent-tint);
}
.audit-card__bullets li strong { color: var(--brand-neutral-0); min-width: 120px; flex-shrink: 0; }
.audit-card__cta { text-align: center; }
.audit-card__alt { margin-top: var(--sp-5); font: var(--bz-body); color: var(--brand-neutral-400); text-align: center; }
.audit-card__alt-link { color: var(--brand-accent-light); text-decoration: underline; text-underline-offset: 2px; transition: color 0.15s ease; }
.audit-card__alt-link:hover { color: var(--brand-neutral-0); }

/* Calendly embed */
.calendly-embed { margin-bottom: var(--sp-4); }

/* ============================================================
   FAQ — Premium accordion
   ============================================================ */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}
@media (min-width: 768px) { .faq-grid { grid-template-columns: repeat(2, 1fr); } }

.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.faq-item:hover {
  box-shadow: 0 0 20px rgba(0,109,109,0.12);
  border-color: var(--brand-accent);
}
.faq-item[open] {
  box-shadow: 0 0 24px rgba(0,109,109,0.18);
  border-color: var(--brand-accent);
  background: rgba(0,109,109,0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--sp-5);
  background: none;
  border: none;
  cursor: pointer;
  font: var(--bz-h3);
  color: #fff;
  text-align: left;
  transition: color 0.15s ease;
}
.faq-question:hover { color: var(--brand-accent-light); }
.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--brand-accent);
  transition: transform 0.25s ease, color 0.15s ease;
  flex-shrink: 0;
  margin-left: var(--sp-3);
}
.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
  color: var(--brand-accent-deep);
}
.faq-answer {
  padding: 0 var(--sp-5) var(--sp-5);
  font: var(--bz-body);
  color: rgba(255,255,255,0.7);
  line-height: 1.75;
  animation: faqSlideDown 0.3s ease;
}
@keyframes faqSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.faq-answer p { margin: 0 0 var(--sp-2); }
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer strong { color: #fff; }
.faq-answer code {
  font: var(--bz-small);
  background: rgba(0,109,109,0.15);
  color: var(--brand-accent-light);
  padding: 0.125rem 0.375rem;
  border-radius: var(--r-sm);
}

/* ============================================================
   GRADIENT TEXT — degrade across headings, numbers, tags
   ============================================================ */
.text-gradient {
  background: linear-gradient(135deg, var(--brand-accent) 0%, var(--brand-accent-light) 40%, var(--brand-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
/* Light variant for dark-background sections */
.text-gradient--light {
  background: linear-gradient(135deg, var(--brand-accent-light) 0%, #00b8b8 40%, var(--brand-accent-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Responsive tweaks */
@media (max-width: 720px) {
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .audit-card__bullets li { flex-direction: column; gap: var(--sp-1); }
  .audit-card__bullets li strong { min-width: auto; }
  .faq-grid { grid-template-columns: 1fr; }
}