/* ===================================================
   Case Study — Estilos compartilhados entre todos os
   projetos internos (quantum-vizz, 2p-web-dev, etc.)
   =================================================== */

/* ===================================================
   Hero do Case Study
   =================================================== */
.cs-hero {
  background: var(--clr-dark);
  padding-top: calc(var(--nav-height) + 48px + 24px); /* nav top + nav height + gap */
  padding-bottom: 0;
  overflow: hidden;
}

.cs-hero__inner {
  max-width: 860px;
  margin-inline: auto;
  padding-inline: var(--container-px);
  text-align: center;
  padding-bottom: clamp(40px, 5vw, 64px);
}

.cs-hero__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--fw-regular);
  font-style: italic;
  color: var(--clr-orange);
  text-transform: lowercase;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.cs-hero__title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  line-height: var(--leading-tight);
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.cs-hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.375rem);
  font-weight: var(--fw-regular);
  color: rgba(230, 230, 230, 0.80);
  line-height: var(--leading-normal);
  max-width: 640px;
  margin-inline: auto;
}

.cs-hero__image {
  width: 100%;
  margin-top: clamp(40px, 5vw, 64px);
}

.cs-hero__image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 600px;
  object-position: top;
}

/* ===================================================
   Seção: Desafio + Perfil do Projeto
   =================================================== */
.cs-challenge {
  padding-block: var(--section-py);
}

.cs-challenge__grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: clamp(40px, 5vw, 80px);
  align-items: start;
}

.cs-challenge__label {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.cs-challenge__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: var(--fw-light);
  color: var(--clr-text-dark);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.cs-challenge__text {
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
}

.cs-challenge__text:last-child {
  margin-bottom: 0;
}

/* Sidebar — Perfil do projeto */
.cs-meta-card {
  background: var(--clr-dark);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  color: var(--clr-light);
  position: sticky;
  top: calc(var(--nav-height) + 48px);
}

.cs-meta-item {
  padding-block: var(--space-5);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}

.cs-meta-item:first-child { padding-top: 0; }
.cs-meta-item:last-child  { border-bottom: none; padding-bottom: 0; }

.cs-meta-item__label {
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  color: var(--clr-orange);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: var(--space-1);
}

.cs-meta-item__value {
  font-size: var(--text-sm);
  font-weight: var(--fw-regular);
  color: var(--clr-light);
  line-height: var(--leading-normal);
}

.cs-meta-item--result .cs-meta-item__value {
  font-size: var(--text-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-orange);
}

/* ===================================================
   Seção: Pergunta de Negócio / Contexto central
   =================================================== */
.cs-context {
  background: var(--clr-dark);
  padding-block: var(--section-py);
}

.cs-context__question {
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: var(--fw-light);
  color: var(--clr-white);
  line-height: var(--leading-normal);
  max-width: 800px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: clamp(48px, 6vw, 80px);
  padding-inline: var(--container-px);
}

.cs-context__question strong {
  font-weight: var(--fw-semibold);
  color: var(--clr-orange);
}

.cs-gargalos {
  max-width: 800px;
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.cs-gargalos__title {
  font-size: var(--text-lg);
  font-weight: var(--fw-semibold);
  color: var(--clr-light);
  margin-bottom: var(--space-8);
}

.cs-gargalos__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  list-style: none;
}

.cs-gargalos__item {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
}

.cs-gargalos__num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--clr-orange);
  color: var(--clr-dark);
  font-size: 0.875rem;
  font-weight: var(--fw-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.cs-gargalos__text {
  font-size: var(--text-base);
  color: rgba(230, 230, 230, 0.80);
  line-height: var(--leading-normal);
  flex: 1;
}

/* ===================================================
   Seção: Processo
   =================================================== */
.cs-process {
  padding-block: var(--section-py);
}

.cs-process__intro {
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-4);
}

.cs-steps {
  display: flex;
  flex-direction: column;
  gap: clamp(64px, 8vw, 120px);
  margin-top: clamp(48px, 6vw, 80px);
}

.cs-step {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.cs-step--reverse {
  direction: rtl;
}

.cs-step--reverse > * {
  direction: ltr;
}

.cs-step__num {
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  color: var(--clr-orange);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  margin-bottom: var(--space-3);
}

.cs-step__title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-dark);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
}

.cs-step__text {
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-3);
}

.cs-step__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.cs-step__list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-normal);
}

.cs-step__list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-orange);
  flex-shrink: 0;
  margin-top: 8px;
}

.cs-step__image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cs-step__image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ===================================================
   Seção: Antes × Depois
   =================================================== */
.cs-comparisons {
  padding-block: var(--section-py);
  background: var(--color-neutral-050);
}

.cs-comparisons .section-title {
  margin-bottom: clamp(40px, 5vw, 64px);
}

.cs-comparison-list {
  display: flex;
  flex-direction: column;
  gap: clamp(64px, 8vw, 100px);
}

.cs-comparison {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.cs-comparison__label {
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.cs-comparison__title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-dark);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.cs-comparison__note {
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-normal);
  max-width: 640px;
}

.cs-comparison__images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.cs-comparison__side {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cs-comparison__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  width: fit-content;
}

.cs-comparison__badge--before {
  background: rgba(1, 7, 29, 0.08);
  color: var(--clr-text-dark);
}

.cs-comparison__badge--after {
  background: var(--clr-orange);
  color: var(--clr-dark);
}

.cs-comparison__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-md);
}

/* ===================================================
   Seção: Resultados
   =================================================== */
.cs-results {
  background: var(--clr-dark);
  padding-block: var(--section-py);
}

.cs-results .section-title {
  color: var(--clr-white);
  margin-bottom: clamp(48px, 6vw, 80px);
}

.cs-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}

.cs-metric {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cs-metric__value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--fw-bold);
  color: var(--clr-orange);
  line-height: 1;
}

.cs-metric__label {
  font-size: var(--text-sm);
  font-weight: var(--fw-regular);
  color: rgba(230, 230, 230, 0.70);
  line-height: var(--leading-normal);
}

/* ===================================================
   Seção: Aprendizados
   =================================================== */
.cs-learnings {
  padding-block: var(--section-py);
}

.cs-learnings .section-title {
  margin-bottom: clamp(40px, 5vw, 64px);
}

.cs-learnings__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  max-width: 800px;
}

.cs-learning {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-6);
  background: rgba(255,255,255,0.60);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(4px);
}

.cs-learning__icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.cs-learning__text {
  font-size: var(--text-base);
  color: var(--clr-text);
  line-height: var(--leading-loose);
}

.cs-medium-link {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--clr-border);
}

.cs-medium-link__anchor {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--clr-orange);
  text-decoration: none;
  transition: gap 0.2s ease, opacity 0.2s ease;
}

.cs-medium-link__anchor:hover {
  gap: 14px;
  opacity: 0.85;
}

/* ===================================================
   Navegação entre projetos
   =================================================== */
.cs-nav {
  padding-block: clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--clr-border);
}

.cs-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.cs-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-decoration: none;
  transition: color var(--transition);
}

.cs-nav__link--prev { align-items: flex-start; }
.cs-nav__link--next { align-items: flex-end; }

.cs-nav__direction {
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.cs-nav__project {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-dark);
  line-height: var(--leading-tight);
  transition: color var(--transition);
}

.cs-nav__link:hover .cs-nav__project {
  color: var(--clr-orange);
}

.cs-nav__back {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.cs-nav__back:hover {
  color: var(--clr-orange);
}

/* ===================================================
   Responsivo
   =================================================== */
@media (max-width: 1024px) {
  .cs-challenge__grid {
    grid-template-columns: 1fr;
  }

  .cs-meta-card {
    position: static;
  }

  .cs-step {
    grid-template-columns: 1fr;
  }

  .cs-step--reverse {
    direction: ltr;
  }
}

@media (max-width: 768px) {
  .cs-comparison__images {
    grid-template-columns: 1fr;
  }

  .cs-nav__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
  }

  .cs-nav__link--next {
    align-items: flex-start;
  }

  .cs-metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .cs-metrics {
    grid-template-columns: 1fr;
  }
}