/* Header e navegação */
.site-header {
  border-bottom: var(--border-width-hairline) solid var(--color-border-inverse);
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 270px;
  color: var(--color-text-inverse);
  text-decoration: none;
  transition: opacity var(--transition-base);
}

.brand:hover {
  opacity: 0.85;
}

.brand__symbol {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: block;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--color-text-inverse);
  white-space: nowrap;
}

.brand__subtitle {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
  white-space: nowrap;
}

@media (max-width: 520px) {
  .brand__subtitle {
    display: none;
  }
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  border: var(--border-width-hairline) solid var(--color-border-inverse);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav a {
  font-family: var(--font-sans);
  color: var(--color-text-inverse-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding-block: var(--space-1);
  border-bottom: var(--border-width-hairline) solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--color-positive);
  border-bottom-color: var(--color-positive);
}

@media (max-width: 760px) {
  .js .nav-toggle {
    display: inline-flex;
  }

  .js .primary-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: var(--space-3);
    padding-block: var(--space-3);
  }

  .js .primary-nav.is-open {
    display: flex;
  }

  .site-header__bar {
    flex-wrap: wrap;
    min-height: 68px;
  }
}

/* Footer — faixa única e compacta */
.site-footer {
  background: var(--color-bg-inverse-deep);
  color: var(--color-text-inverse-muted);
  min-height: 84px;
  display: flex;
  align-items: center;
  margin-top: 0;
}

.site-footer__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.site-footer__symbol {
  width: 30px;
  height: 30px;
  display: block;
}

.site-footer__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-text-inverse);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__nav a {
  font-family: var(--font-sans);
  color: var(--color-text-inverse-muted);
  text-decoration: none;
  font-size: 13px;
}

.site-footer__nav a:hover {
  color: var(--color-text-inverse);
}

.site-footer__meta {
  font-family: var(--font-sans);
  font-size: 12px;
  color: rgba(243, 241, 234, 0.78);
  margin: 0;
}

@media (max-width: 640px) {
  .site-footer {
    min-height: 0;
    padding-block: var(--space-4);
  }

  .site-footer__bar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: var(--border-width-hairline) solid transparent;
  cursor: pointer;
  line-height: 1.2;
  transition: background-color var(--transition-base), border-color var(--transition-base),
    color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary {
  background: var(--color-positive-strong);
  color: var(--color-text-inverse);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-positive-strong);
  filter: brightness(0.92);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(163, 177, 146, 0.14);
  transform: translateY(-1px);
}

.btn-positive {
  background: var(--color-positive-strong);
  color: var(--color-text-inverse);
}

.btn-positive:hover,
.btn-positive:focus-visible {
  background: var(--color-positive-strong);
  filter: brightness(0.92);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  border: var(--border-width-hairline) solid var(--color-border-strong);
  color: var(--color-text-muted);
}

.badge--positive {
  background: var(--color-positive-bg);
  border-color: var(--color-positive-strong);
  color: var(--color-positive-strong);
}

.badge--accent {
  border-color: var(--color-accent);
  color: var(--color-accent-strong);
}

/* Cards */
.card {
  background: var(--color-bg-surface);
  border: var(--border-width-hairline) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-soft);
}

.card--course {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.card--course:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}

.card--course__media {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-inverse);
  overflow: hidden;
  position: relative;
}

.card--course__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 260ms ease;
}

.card--course:hover .card--course__media img {
  transform: scale(1.04);
}

.card--course__body {
  padding: var(--space-5) var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.card--course__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.card--course__body h3 {
  margin-bottom: 0;
}

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

.card--course__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-tight);
}

.card--course__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  padding-top: var(--space-3);
}

.card--course__cta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-accent-strong);
}

.card--course__link {
  text-decoration: none;
  color: inherit;
}

/* Blocos numerados */
.numbered-block {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding-block: var(--space-4);
  border-top: var(--border-width-hairline) solid var(--color-border);
}

.numbered-block:first-child {
  border-top: none;
  padding-top: 0;
}

.numbered-block__index {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--color-accent-strong);
  border: var(--border-width-hairline) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Cabeçalhos de seção */
.section-heading {
  max-width: 42rem;
  margin-bottom: var(--space-5);
}

.section-heading--tight {
  margin-bottom: var(--space-4);
}

.section-heading__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent-strong);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.section-heading__eyebrow::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: var(--border-width-hairline);
  background: currentColor;
}

/* Mensagens */
.messages {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.message {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-border-strong);
  background: var(--color-bg-surface);
  font-size: 0.9375rem;
}

.message--success {
  background: var(--color-positive-bg);
  border-left-color: var(--color-positive-strong);
  color: var(--color-positive-strong);
}

.message--error {
  background: rgba(196, 90, 74, 0.1);
  border-left-color: #a3453a;
  color: #a3453a;
}

/* Estado vazio */
.empty-state {
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
}

/* Formulários */
.form-panel {
  background: var(--color-bg-surface);
  border: var(--border-width-hairline) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.form-panel .btn {
  width: 100%;
}

.form-panel--compact {
  padding: 0 24px 24px;
  border: none;
  border-top: 0;
  border-radius: 0;
  background: transparent;
}

.form-panel--compact .form-field {
  margin-bottom: var(--space-3);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-field label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(44, 47, 54, 0.78);
}

.form-field input[type="text"],
.form-field input[type="email"] {
  min-height: 44px;
  padding: 10px 14px;
  border: var(--border-width-hairline) solid rgba(44, 47, 54, 0.28);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg-surface);
  color: var(--color-text);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-field input[type="text"]:focus-visible,
.form-field input[type="email"]:focus-visible {
  border-color: var(--color-positive-strong);
}

.form-field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-3);
}

.form-field--checkbox input {
  margin-top: 0.2em;
  accent-color: var(--color-positive-strong);
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
}

.form-field--checkbox label {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  letter-spacing: normal;
  text-transform: none;
  color: rgba(44, 47, 54, 0.78);
}

.form-field__error {
  color: #a3453a;
  font-size: 0.8125rem;
}

.form-field__hint {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

/* FAQ acessível — <details>/<summary> nativos, sem dependência de JS */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: var(--color-bg-surface);
  border: var(--border-width-hairline) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding-inline: var(--space-5);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.faq-item:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-soft);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  list-style: none;
  padding-block: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  color: var(--color-positive-strong);
  font-family: var(--font-mono);
  font-size: 1.125rem;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item[open] summary {
  color: var(--color-positive-strong);
}

.faq-item__answer {
  margin: 0 0 var(--space-4);
  color: var(--color-text-muted);
}

/* Placeholder de mídia — composição arquitetônica abstrata, usada quando não há capa real */
.media-placeholder {
  width: 100%;
  height: 100%;
  min-height: 8rem;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  text-align: center;
  padding: var(--space-4);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, rgba(196, 167, 106, 0.16), transparent 60%),
    linear-gradient(var(--color-border-inverse) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-inverse) 1px, transparent 1px),
    var(--color-bg-inverse);
  background-size: 100% 100%, 28px 28px, 28px 28px, 100% 100%;
}

.media-placeholder::before,
.media-placeholder::after {
  content: "";
  position: absolute;
  width: 1.25rem;
  height: 1.25rem;
  border: var(--border-width-hairline) solid var(--color-border-inverse);
  opacity: 0.6;
}

.media-placeholder::before {
  top: var(--space-3);
  left: var(--space-3);
  border-right: none;
  border-bottom: none;
}

.media-placeholder::after {
  bottom: var(--space-3);
  right: var(--space-3);
  border-left: none;
  border-top: none;
}

.media-placeholder__symbol {
  width: 2.75rem;
  height: 2.75rem;
  opacity: 0.9;
  filter: drop-shadow(0 4px 10px rgba(196, 167, 106, 0.25));
}

.media-placeholder__status {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
}

/* Chips compactos (fatos, métricas) */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.chip {
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: rgba(243, 241, 234, 0.07);
}

.chip__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-inverse-muted);
}

.chip__value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-inverse);
}