/*
 * WWin Design System — Components
 * Estilos base de componentes reutilizáveis.
 * Todos os valores referenciam tokens.css.
 */

/* =========================================================
 * BOTÕES
 * ========================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  cursor: pointer;
  border: 1px solid transparent;
  outline: none;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0px);
}

.btn:focus-visible {
  outline: 2px solid var(--color-border-strong);
  outline-offset: 3px;
}

/* Botão Primário — gradiente institucional */
.btn-primary {
  background: var(--linear-1);
  color: var(--color-white);
  border-color: transparent;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  box-shadow: var(--shadow-medium);
  color: var(--color-white);
}

/* Botão Secundário — azul sólido */
.btn-secondary {
  background: var(--color-blue-brand);
  color: var(--color-white);
  border-color: var(--color-blue-brand);
}

.btn-secondary:hover {
  background: var(--color-navy-700);
  border-color: var(--color-navy-700);
  color: var(--color-white);
}

/* Botão Light — branco com texto escuro */
.btn-light {
  background: var(--color-white);
  color: var(--color-navy-900);
  border-color: var(--color-white);
  box-shadow: var(--shadow-soft);
}

.btn-light:hover {
  background: var(--color-gray-100);
  color: var(--color-navy-950);
}

/* Botão Outline — contorno translúcido para fundos escuros */
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.32);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}

/* Botão Dark — navy sólido */
.btn-dark {
  background: var(--color-navy-900);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn-dark:hover {
  background: var(--color-navy-800);
  border-color: rgba(255, 255, 255, 0.24);
}

/* Botão Ghost — sutil */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
}

/* Botão Navy (legado) */
.btn-navy {
  background: var(--color-navy-800);
  color: var(--color-white);
  border-color: var(--color-color-border);
}

.btn-navy:hover {
  background: var(--color-navy-600);
  border-color: var(--color-blue-300);
}

/* Tamanhos */
.btn-sm {
  min-height: 38px;
  padding: 9px 18px;
  font-size: var(--text-xs);
}

.btn-lg {
  min-height: 56px;
  padding: 18px 36px;
  font-size: 0.95rem;
}

/* Mobile: btn-lg permite quebra de linha para não transbordar o container */
@media (max-width: 639px) {
  .btn-lg {
    white-space: normal;
    text-align: center;
  }
}

/* =========================================================
 * CARDS
 * ========================================================= */

.card {
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 36px);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-3px);
}

/* Card padrão — escuro (compatibilidade com seções navy) */
.card:not([class*="card-"]):not(.card--metric):not(.card--featured) {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  box-shadow: none;
}

.card:not([class*="card-"]):not(.card--metric):not(.card--featured):hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-soft);
}

/* Card Light — para seções brancas/claras */
.card-light {
  background: var(--bg-white);
  color: var(--text-primary);
  border: 1px solid rgba(2, 8, 23, 0.08);
  box-shadow: var(--shadow-soft);
}

.card-light:hover {
  box-shadow: var(--shadow-medium);
}

/* Card Dark — premium escuro */
.card-dark {
  background: rgba(2, 8, 23, 0.92);
  color: var(--text-inverse);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-dark:hover {
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow-soft);
}

/* Card Gradient — degradê institucional */
.card-gradient {
  background: var(--linear-1);
  color: var(--text-inverse);
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.card-gradient:hover {
  box-shadow: var(--shadow-medium);
}

/* Card Glass — efeito vidro para fundos escuros */
.card-glass {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text-inverse);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.22);
}

/* Card Metric — número em destaque */
.card-metric {
  text-align: center;
  background: linear-gradient(135deg, var(--color-navy-800), var(--color-navy-700));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Card Feature — título + texto + ícone */
.card-feature {
  background: var(--bg-white);
  color: var(--text-primary);
  border: 1px solid rgba(2, 8, 23, 0.07);
  box-shadow: var(--shadow-soft);
}

.card-feature:hover {
  box-shadow: var(--shadow-medium);
  border-color: rgba(2, 8, 23, 0.12);
}

/* Modificadores de destaque (legado) */
.card--featured {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-top: 3px solid var(--color-accent);
}

.card--metric {
  text-align: center;
  background: linear-gradient(135deg, var(--color-navy-800), var(--color-navy-700));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Partes do card */
.card-body   { padding: var(--space-6); }
.card-header { padding: var(--space-6) var(--space-6) 0; }
.card-footer {
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: var(--space-4);
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.card-text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  color: var(--color-accent);
  flex-shrink: 0;
}

/* =========================================================
 * FORMULÁRIOS
 * ========================================================= */

.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

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

.form-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

/* form-control / form-input são sinônimos */
.form-control,
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-navy-800);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  appearance: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

/* Variante clara — para seções brancas */
.section-white .form-control,
.section-white .form-input,
.section-white .form-select,
.section-white .form-textarea,
.section-light .form-control,
.section-light .form-input,
.section-light .form-select,
.section-light .form-textarea,
.section-muted .form-control,
.section-muted .form-input,
.section-muted .form-select,
.section-muted .form-textarea {
  background: var(--bg-white);
  color: var(--text-primary);
  border-color: rgba(2, 8, 23, 0.14);
}

.form-control::placeholder,
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-disabled);
}

.form-control:hover,
.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-border-strong);
}

.form-control:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-blue-brand);
  box-shadow: 0 0 0 4px rgba(33, 56, 100, 0.18);
  background: var(--color-navy-700);
}

.section-white .form-control:focus,
.section-white .form-input:focus,
.section-light .form-control:focus,
.section-light .form-input:focus {
  background: var(--bg-white);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--leading-relaxed);
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
}

.form-input--error,
.form-control--error {
  border-color: var(--color-danger);
}

.form-input--error:focus,
.form-control--error:focus {
  box-shadow: 0 0 0 4px rgba(191, 56, 42, 0.15);
}

/* =========================================================
 * BADGES E TAGS
 * ========================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background: var(--color-accent-light);
  color: var(--color-accent);
  border: 1px solid rgba(62, 129, 255, 0.25);
}

.badge-navy {
  background: var(--color-navy-700);
  color: var(--color-blue-200);
  border: 1px solid var(--color-border);
}

.badge-success {
  background: rgba(38, 174, 96, 0.12);
  color: var(--color-success);
  border: 1px solid rgba(38, 174, 96, 0.25);
}

.badge-warning {
  background: rgba(230, 126, 33, 0.12);
  color: var(--color-warning);
  border: 1px solid rgba(230, 126, 33, 0.25);
}

.badge-danger {
  background: rgba(191, 56, 42, 0.12);
  color: var(--color-danger);
  border: 1px solid rgba(191, 56, 42, 0.25);
}

/* =========================================================
 * NAVEGAÇÃO
 * ========================================================= */

.nav {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-4) var(--container-padding);
  background: transparent;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  transition:
    background var(--transition-base),
    backdrop-filter var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.nav--sticky {
  background: rgba(2, 8, 23, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.24);
}

.nav-inner {
  display: flex;
  align-items: center;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  margin-right: auto;
  flex-shrink: 0;
}

.nav-brand img {
  height: 36px;
  width: auto;
}

.nav-brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  letter-spacing: 0.04em;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (min-width: 1280px) {
  .nav-links {
    display: flex;
    margin-inline: 15px; /* espaçamento mínimo entre logo ↔ links ↔ botão */
  }
}

.nav-link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-inverse-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
  border-radius: 1px;
}

.nav-link:hover {
  color: var(--color-white);
}

.nav-link:hover::after,
.nav-link--active::after {
  width: 100%;
}

.nav-link--active {
  color: var(--color-white);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: var(--space-8);
}

/* =========================================================
 * DROPDOWN DE NAVEGAÇÃO — "A empresa"
 * ========================================================= */

.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-inverse-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-dropdown-trigger:hover,
.nav-dropdown--open .nav-dropdown-trigger {
  color: var(--color-white);
}

.nav-dropdown-chevron {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.nav-dropdown--open .nav-dropdown-chevron {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 160px;
  list-style: none;
  padding: var(--space-2);
  margin: 0;
  background: rgba(6, 20, 46, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-fast),
    visibility var(--transition-fast),
    transform var(--transition-fast);
  z-index: var(--z-dropdown);
}

.nav-dropdown--open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-inverse-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
}

/* Mobile menu — label de seção e sub-links */
.mobile-menu-section {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  padding: var(--space-4) 0 var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  margin-top: var(--space-2);
  list-style: none;
}

.mobile-menu-link--sub {
  font-size: var(--text-2xl);
  padding-left: var(--space-4);
  color: var(--text-inverse-muted);
}

/* Toggle mobile */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
  margin-left: var(--space-4);
}

@media (min-width: 1280px) {
  .nav-toggle { display: none; }
}

/* Oculta o botão CTA da nav até o breakpoint desktop completo */
@media (max-width: 1279px) {
  .nav-actions .hide-mobile {
    display: none !important;
  }
}

.nav-toggle-bar {
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

/* =========================================================
 * MENU MOBILE
 * ========================================================= */

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-navy-950);
  z-index: var(--z-overlay);
  padding: 100px var(--container-padding) var(--space-8);
  flex-direction: column;
  gap: var(--space-8);
  overflow-y: auto;
}

.mobile-menu--open {
  display: flex;
}

.mobile-menu-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.mobile-menu-link {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: var(--space-5);
}

.mobile-menu-link:hover {
  color: var(--color-accent);
}

/* Botão fechar — canto superior direito do menu mobile */
.mobile-menu-close {
  position: absolute;
  top: clamp(var(--space-4), 2.5vh, var(--space-6));
  right: var(--container-padding);
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-full);
  color: var(--color-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

.mobile-menu-close:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
}

/* =========================================================
 * DIVIDER
 * ========================================================= */

.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-8) 0;
}

.divider--accent {
  background: linear-gradient(90deg, var(--color-accent), transparent);
  height: 2px;
}

/* =========================================================
 * FEATURE ITEM (ícone + título + texto)
 * ========================================================= */

.feature-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.feature-content { flex: 1; }

.feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.feature-text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* =========================================================
 * TESTIMONIAL
 * ========================================================= */

.testimonial {
  padding: var(--space-8);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
}

.testimonial-text {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-name {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
}

.testimonial-role {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* =========================================================
 * ACCORDION
 * ========================================================= */

.accordion-item {
  border-bottom: 1px solid var(--color-border-subtle);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

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

.accordion-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.accordion-item--open .accordion-icon {
  transform: rotate(45deg);
  color: var(--color-accent);
}

.accordion-content {
  display: none;
  padding-bottom: var(--space-6);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  line-height: var(--leading-relaxed);
}

.accordion-item--open .accordion-content { display: block; }

/* =========================================================
 * TOOLTIP
 * ========================================================= */

.tooltip { position: relative; display: inline-block; }

.tooltip-content {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-3);
  background: var(--color-gray-900);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  border-radius: var(--radius-xs);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: var(--z-dropdown);
}

.tooltip:hover .tooltip-content { opacity: 1; }

/* =========================================================
 * SPINNER
 * ========================================================= */

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =========================================================
 * BOTÃO SHINY NAV — borda giratória com brilho azul da marca
 * Uso: adicionar .btn-nav-shiny ao .btn.btn-primary.btn-sm
 * HTML interno: <span>texto</span>
 * ========================================================= */

@property --nav-gradient-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}
@property --nav-gradient-angle-offset {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}
@property --nav-gradient-percent {
  syntax: "<percentage>";
  initial-value: 5%;
  inherits: false;
}
@property --nav-gradient-shine {
  syntax: "<color>";
  initial-value: white;
  inherits: false;
}

.btn-nav-shiny {
  --shiny-bg:        #06142e;                  /* navy-900 */
  --shiny-bg-subtle: rgba(140, 171, 214, 0.18);
  --shiny-highlight: #8cabd6;                  /* blue-300 */
  --shiny-peak:      #c1d6ff;                  /* blue-100 — pico do brilho */

  isolation: isolate;
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
  color: var(--color-white);
  background:
    linear-gradient(var(--shiny-bg), var(--shiny-bg)) padding-box,
    conic-gradient(
      from calc(var(--nav-gradient-angle) - var(--nav-gradient-angle-offset)),
      transparent,
      var(--shiny-highlight) var(--nav-gradient-percent),
      var(--nav-gradient-shine) calc(var(--nav-gradient-percent) * 2),
      var(--shiny-highlight) calc(var(--nav-gradient-percent) * 3),
      transparent calc(var(--nav-gradient-percent) * 4)
    ) border-box;
  box-shadow: inset 0 0 0 1px var(--shiny-bg-subtle);
  transition: 800ms cubic-bezier(0.25, 1, 0.5, 1);
  transition-property: --nav-gradient-angle-offset, --nav-gradient-percent, --nav-gradient-shine, box-shadow, transform;
}

/* Animação giratória contínua do brilho — só roda quando o usuário não pediu
   movimento reduzido, evitando repaint constante do conic-gradient em loop */
@media (prefers-reduced-motion: no-preference) {
  .btn-nav-shiny {
    animation:
      nav-border-spin 3s linear infinite,
      nav-border-spin calc(3s / 0.4) linear reverse paused;
    animation-composition: add;
  }
}

.btn-nav-shiny:hover {
  transform: translateY(-2px);
  --nav-gradient-percent: 20%;
  --nav-gradient-angle-offset: 95deg;
  --nav-gradient-shine: var(--shiny-peak);
  box-shadow:
    inset 0 0 0 1px rgba(140, 171, 214, 0.40),
    0 0 18px rgba(140, 171, 214, 0.18);
}

/* base dos pseudo-elementos */
.btn-nav-shiny::before,
.btn-nav-shiny::after,
.btn-nav-shiny span::before {
  content: "";
  pointer-events: none;
  position: absolute;
  inset-inline-start: 50%;
  inset-block-start: 50%;
  translate: -50% -50%;
  z-index: -1;
}

/* pontilhado girante na borda interior */
.btn-nav-shiny::before {
  --dot: 2px;
  width: calc(100% - 6px);
  height: calc(100% - 6px);
  background:
    radial-gradient(circle at var(--dot) var(--dot), white calc(var(--dot) / 4), transparent 0)
    padding-box;
  background-size: calc(var(--dot) * 2) calc(var(--dot) * 2);
  background-repeat: space;
  mask-image: conic-gradient(
    from calc(var(--nav-gradient-angle) + 45deg),
    black,
    transparent 10% 90%,
    black
  );
  border-radius: inherit;
  opacity: 0.35;
}

/* reflexo giratório interno */
.btn-nav-shiny::after {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(-50deg, transparent, var(--shiny-highlight), transparent);
  mask-image: radial-gradient(circle at bottom, transparent 40%, black);
  opacity: 0.5;
  animation:
    nav-shimmer 3s linear infinite,
    nav-shimmer calc(3s / 0.4) linear reverse paused;
  animation-composition: add;
}

/* texto acima dos pseudo-elementos */
.btn-nav-shiny span {
  position: relative;
  z-index: 1;
}

/* brilho interno que aparece no hover */
.btn-nav-shiny span::before {
  width: 220px;
  height: 70px;
  box-shadow: inset 0 -1ex 2rem 4px var(--shiny-highlight);
  opacity: 0;
  transition: opacity 900ms cubic-bezier(0.25, 1, 0.5, 1);
}

.btn-nav-shiny:hover::before,
.btn-nav-shiny:hover::after {
  animation-play-state: running;
}

.btn-nav-shiny:hover span::before {
  opacity: 0.85;
}

@keyframes nav-border-spin {
  to { --nav-gradient-angle: 360deg; }
}

@keyframes nav-shimmer {
  to { rotate: 360deg; }
}