/* ==========================================================================
   main.css — Estilos do site Diga Inova
   Metodologia: BEM (block__element--modifier)
   Abordagem: mobile-first (breakpoints em 48rem e 64rem)
   ==========================================================================

   Índice:
   1. Base
   2. Utilitários (container, skip-link, títulos de seção)
   3. Botões (.button)
   4. Header (.header, .nav, .lang-switcher)
   5. Hero (.hero)
   6. Seções e cards (.section, .feature-card, .service-card)
   7. Portfólio (.portfolio-grid, .product-card)
   8. Sobre (.about, .values)
   9. Contato (.contact, .form)
   10. CTA (.cta)
   11. Footer (.footer)
   ========================================================================== */

/* ==========================================================================
   1. Base
   ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  /* Textura sutil de "grade" tecnológica no fundo */
  background-image:
    radial-gradient(circle at 20% 0%, rgba(91, 140, 255, 0.08), transparent 40%),
    radial-gradient(circle at 80% 100%, rgba(34, 211, 238, 0.06), transparent 40%);
  background-attachment: fixed;
}

/* Foco visível e consistente para navegação por teclado */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ==========================================================================
   2. Utilitários
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Link "pular para o conteúdo" — visível apenas ao receber foco */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: var(--font-semibold);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Texto disponível apenas para leitores de tela */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Cabeçalho padrão de cada seção */
.section-header {
  max-width: 42rem;
  margin-bottom: var(--space-6);
}

.section-header--center {
  margin-inline: auto;
  text-align: center;
}

.section-header__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-header__title {
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  font-weight: var(--font-bold);
}

.section-header__description {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .section-header__title {
    font-size: var(--text-3xl);
  }
}

/* ==========================================================================
   3. Botões
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.button:active {
  transform: scale(0.98);
}

.button--primary {
  background-image: var(--gradient-brand);
  color: var(--color-text-inverse);
}

.button--primary:hover {
  box-shadow: 0 6px 20px rgba(91, 140, 255, 0.4);
}

.button--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}

.button--ghost:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface);
}

.button--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* ==========================================================================
   4. Header
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background-color: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 100%;
}

/* Logotipo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  letter-spacing: -0.01em;
}

.brand__logo {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
}

.brand__highlight {
  background-image: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Navegação principal */
.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.nav__toggle:hover {
  background-color: var(--color-surface);
}

/* Alterna os ícones de hambúrguer/fechar conforme o estado do menu */
.nav__toggle-icon--close {
  display: none;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon--open {
  display: none;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon--close {
  display: block;
}

/* Menu mobile: painel abaixo do header, escondido por padrão */
.nav__list {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  display: none;
  flex-direction: column;
  padding: var(--space-4);
  gap: var(--space-1);
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.nav__list--open {
  display: flex;
}

.nav__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.nav__link--active {
  color: var(--color-text);
  background-color: var(--color-surface);
}

/* Seletor de idioma */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.lang-switcher:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.lang-switcher__icon {
  width: 1rem;
  height: 1rem;
}

/* Navegação desktop: menu inline, sem botão hambúrguer */
@media (min-width: 48rem) {
  .nav__toggle {
    display: none;
  }

  .nav__list {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0;
    gap: var(--space-1);
    background: none;
    border: none;
    box-shadow: none;
  }

  .nav__link {
    padding: var(--space-2) var(--space-3);
  }
}

/* ==========================================================================
   5. Hero
   ========================================================================== */

.hero {
  padding-block: var(--space-8) var(--space-7);
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
}

.hero__title {
  max-width: 46rem;
  margin-inline: auto;
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  font-weight: var(--font-bold);
  letter-spacing: -0.02em;
}

.hero__title-highlight {
  background-image: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__description {
  max-width: 38rem;
  margin: var(--space-5) auto 0;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

@media (min-width: 48rem) {
  .hero {
    padding-block: var(--space-9) var(--space-8);
  }

  .hero__title {
    font-size: var(--text-4xl);
  }
}

/* ==========================================================================
   6. Seções e cards genéricos
   ========================================================================== */

.section {
  padding-block: var(--space-8);
}

.section--alt {
  background-color: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

/* Grade genérica de cards: 1 coluna → 2 → 3 */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 48rem) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid--two {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Card de destaque (home) e de serviço */
.feature-card,
.service-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.feature-card:hover,
.service-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.feature-card__icon,
.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background-color: rgba(91, 140, 255, 0.12);
  color: var(--color-primary-strong);
}

.feature-card__icon svg,
.service-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.feature-card__title,
.service-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

.feature-card__description,
.service-card__description {
  color: var(--color-text-muted);
}

/* ==========================================================================
   7. Portfólio
   ========================================================================== */

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 48rem) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Card de produto (renderizado via JS a partir de assets/js/portfolio.js) */
.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.product-card:hover,
.product-card:focus-within {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.product-card__media {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.product-card__image {
  width: 100%;
  max-width: 10rem;
  aspect-ratio: 1;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.product-card:hover .product-card__image {
  transform: scale(1.05);
}

.product-card__body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: var(--space-3);
  padding: var(--space-5);
}

.product-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

.product-card__description {
  flex-grow: 1;
  color: var(--color-text-muted);
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.product-card__tag {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  background-color: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: var(--radius-full);
}

.product-card__footer {
  margin-top: var(--space-2);
}

/* Nota exibida quando o link do produto ainda não está disponível */
.product-card__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

/* ==========================================================================
   8. Sobre
   ========================================================================== */

.about {
  display: grid;
  gap: var(--space-6);
}

.about__text p + p {
  margin-top: var(--space-4);
}

.about__text {
  color: var(--color-text-muted);
}

.about__text strong {
  color: var(--color-text);
}

/* Lista de estatísticas/números da empresa */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.stats__item {
  padding: var(--space-5);
  text-align: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.stats__value {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  background-image: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stats__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .about {
    grid-template-columns: 3fr 2fr;
    align-items: start;
  }
}

/* ==========================================================================
   9. Contato
   ========================================================================== */

.contact {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 48rem) {
  .contact {
    grid-template-columns: 2fr 3fr;
    align-items: start;
  }
}

/* Bloco de informações de contato */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-info__icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.2rem;
  color: var(--color-accent);
}

.contact-info__label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

.contact-info__value {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.contact-info__value a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Formulário */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form__label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

.form__input {
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.form__input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Estado inválido: aplicado via JS após validação */
.form__input--invalid {
  border-color: var(--color-error);
}

.form__input--textarea {
  min-height: 8rem;
  resize: vertical;
}

/* Mensagem de erro por campo */
.form__error {
  display: none;
  font-size: var(--text-sm);
  color: var(--color-error);
}

.form__error--visible {
  display: block;
}

/* Feedback global de sucesso/erro após envio */
.form__feedback {
  display: none;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: var(--font-medium);
}

.form__feedback--success {
  display: block;
  background-color: rgba(52, 211, 153, 0.12);
  border: 1px solid var(--color-success);
  color: var(--color-success);
}

/* ==========================================================================
   10. CTA (faixa de chamada para ação)
   ========================================================================== */

.cta {
  padding: var(--space-7) var(--space-5);
  text-align: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-image:
    radial-gradient(circle at 50% 120%, rgba(91, 140, 255, 0.2), transparent 60%);
}

.cta__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
}

.cta__description {
  max-width: 34rem;
  margin: var(--space-3) auto 0;
  color: var(--color-text-muted);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ==========================================================================
   11. Footer
   ========================================================================== */

.footer {
  margin-top: var(--space-8);
  padding-block: var(--space-7) var(--space-5);
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.footer__tagline {
  margin-top: var(--space-3);
  max-width: 20rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__heading {
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (min-width: 48rem) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}