/* ==========================================================================
   Innovative AI Labs — Component styles
   ========================================================================== */

/* ---------- Cards (shared base) ---------- */
.service-card, .industry-card, .tech-card, .case-study-card, .blog-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  height: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  color: var(--color-text);
}
.service-card:hover, .industry-card:hover, .tech-card:hover,
.case-study-card:hover, .blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
  color: var(--color-text);
}

/* Service card */
.service-card__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-light);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}
.service-card__title { font-weight: 700; font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--color-dark); }
.service-card__desc { color: var(--color-muted); font-size: 0.92rem; flex-grow: 1; }
.service-card__link { margin-top: 1.25rem; font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.35rem; }
.service-card__link .icon { width: 16px; height: 16px; }

/* Industry card */
.industry-card__title { font-weight: 700; font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--color-dark); }
.industry-card__desc { color: var(--color-muted); font-size: 0.92rem; flex-grow: 1; }
.industry-card__link { margin-top: 1.25rem; font-weight: 600; font-size: 0.88rem; display: inline-flex; align-items: center; gap: 0.35rem; }

/* Technology card */
.tech-card { align-items: flex-start; padding: 1.25rem 1.5rem; }
.tech-card__category { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-muted); font-weight: 700; }
.tech-card__title { font-weight: 700; font-size: 1.05rem; margin-top: 0.35rem; color: var(--color-dark); }

/* Case study card */
.case-study-card__img { border-radius: var(--radius-sm); margin-bottom: 1.25rem; object-fit: cover; width: 100%; }
.case-study-card__industry { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-primary); font-weight: 700; }
.case-study-card__title { font-weight: 700; font-size: 1.15rem; margin: 0.5rem 0; color: var(--color-dark); }
.case-study-card__summary { color: var(--color-muted); font-size: 0.92rem; flex-grow: 1; }
.case-study-card__link { margin-top: 1.25rem; font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.35rem; }

/* Blog card */
.blog-card { padding: 0; overflow: hidden; }
.blog-card__img { width: 100%; object-fit: cover; aspect-ratio: 5 / 3; }
.blog-card__body { padding: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.blog-card__category { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-primary); font-weight: 700; }
.blog-card__title { font-weight: 700; font-size: 1.05rem; color: var(--color-dark); }
.blog-card__excerpt { color: var(--color-muted); font-size: 0.9rem; }
.blog-card__date { color: var(--color-muted); font-size: 0.8rem; }

/* Empty state (no case studies / posts yet) */
.empty-state {
  text-align: center;
  padding: 3.5rem 2rem;
  background: var(--color-light);
  border-radius: var(--radius-lg);
}
.empty-state__icon { color: var(--color-primary); width: 40px; height: 40px; margin-bottom: 1rem; }
.empty-state__title { font-weight: 700; font-size: 1.25rem; margin-bottom: 0.5rem; }
.empty-state__desc { color: var(--color-muted); max-width: 46ch; margin: 0 auto 1.5rem; }

/* ---------- Testimonial ---------- */
.testimonial-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin: 0;
}
.testimonial-card__quote { font-size: 1.1rem; color: var(--color-dark); margin-bottom: 1.25rem; }
.testimonial-card__author { display: flex; flex-direction: column; gap: 0.15rem; }
.testimonial-card__logo { object-fit: contain; margin-bottom: 0.5rem; }
.testimonial-card__name { font-weight: 700; }
.testimonial-card__role { color: var(--color-muted); font-size: 0.88rem; }

/* ---------- Trust / capability strip ---------- */
.trust-strip { background: var(--color-light); padding: 3rem 0; }
.trust-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.trust-strip__item { display: flex; align-items: flex-start; gap: 0.9rem; }
.trust-strip__icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-sm);
}
.trust-strip__title { font-weight: 700; font-size: 0.95rem; color: var(--color-dark); }
.trust-strip__desc { font-size: 0.85rem; color: var(--color-muted); }

/* ---------- Process timeline ---------- */
.process-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.process-step { position: relative; padding-top: 2.5rem; }
.process-step__number {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.process-step__title { font-weight: 700; margin-bottom: 0.5rem; color: var(--color-dark); }
.process-step__desc { color: var(--color-muted); font-size: 0.92rem; }
.section--dark .process-step__desc { color: #C4D3EC; }
.section--dark .process-step__title { color: #fff; }

/* ---------- Architecture diagram (flow) ---------- */
.flow-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.flow-diagram__node {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  color: #fff;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  text-align: center;
}
.section--light .flow-diagram__node,
.section--muted .flow-diagram__node {
  background: #fff;
  border-color: var(--color-border);
  color: var(--color-dark);
  box-shadow: var(--shadow-sm);
}
.flow-diagram__arrow { color: var(--color-accent); width: 22px; height: 22px; flex-shrink: 0; }

/* ---------- FAQ accordion ---------- */
.accordion-item.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-sm) !important; margin-bottom: 0.85rem; overflow: hidden; }
.faq-item .accordion-button {
  font-weight: 600;
  color: var(--color-dark);
  box-shadow: none;
  padding: 1.15rem 1.4rem;
}
.faq-item .accordion-button:not(.collapsed) { background: var(--color-light); color: var(--color-primary); }
.faq-item .accordion-button:focus { box-shadow: none; }
.faq-item .accordion-body { color: var(--color-muted); padding: 0 1.4rem 1.25rem; }

/* ---------- Forms ---------- */
.form-control, .form-select {
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  padding: 0.7rem 1rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 92, 255, 0.14);
}
.form-label { font-weight: 600; font-size: 0.9rem; color: var(--color-dark); margin-bottom: 0.4rem; }
.form-error { color: #C0362C; font-size: 0.82rem; margin-top: 0.35rem; }
.form-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); padding: 2.5rem; }
.form-success, .form-fail {
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
}
.form-success { background: #E6F7EE; color: #0F7A47; }
.form-fail { background: #FDECEC; color: #B3261E; }

/* ---------- Table of contents (blog articles) ---------- */
.toc-card { background: var(--color-light); border-radius: var(--radius-md); padding: 1.5rem; }
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list__item { margin-bottom: 0.5rem; font-size: 0.9rem; }
.toc-list__item--h3 { padding-left: 1rem; font-size: 0.85rem; }
.toc-list__item a { color: var(--color-text); }
.toc-list__item a:hover { color: var(--color-primary); }

/* ---------- Article body (blog / case study rich content) ---------- */
.article-content h2 { margin-top: 2.5rem; margin-bottom: 1rem; font-size: 1.5rem; }
.article-content h3 { margin-top: 2rem; margin-bottom: 0.75rem; font-size: 1.2rem; }
.article-content p { color: var(--color-text); margin-bottom: 1.25rem; line-height: 1.75; }
.article-content img { border-radius: var(--radius-md); margin: 1.5rem 0; }
.article-content ul, .article-content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
.article-content blockquote { border-left: 3px solid var(--color-primary); padding-left: 1.25rem; color: var(--color-muted); font-style: italic; margin: 1.5rem 0; }
.article-content table { width: 100%; margin-bottom: 1.5rem; }

/* ---------- 404 / error pages ---------- */
.error-page { text-align: center; padding: 6rem 0; }
.error-page__code { font-size: 5rem; font-weight: 800; color: var(--color-primary); line-height: 1; }
.error-page__title { margin: 1rem 0 0.5rem; }
.error-page__desc { color: var(--color-muted); max-width: 46ch; margin: 0 auto 2rem; }