/* ==========================================================================
   Augustus Consultoria — Components
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: background-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-gold {
  background: var(--c-gold);
  color: var(--c-black);
}
.btn-gold:hover { background: var(--c-gold-light); }

.btn-outline-dark {
  border-color: var(--c-black);
  color: var(--c-black);
}
.btn-outline-dark:hover { background: var(--c-black); color: var(--c-white); }

.btn-outline-light {
  border-color: var(--c-gold);
  color: var(--c-offwhite);
}
.btn-outline-light:hover { background: var(--c-gold); color: var(--c-black); }

.btn-ghost {
  padding-inline: 0;
  color: var(--c-gold);
  text-transform: none;
  letter-spacing: 0.01em;
  font-weight: 600;
  border-bottom: 1px solid var(--c-gold);
  border-radius: 0;
}
.btn-ghost:hover { color: var(--c-gold-light); border-color: var(--c-gold-light); }

.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* --------------------------------------------------------------------------
   Header / Nav
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--c-black-pure);
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-med) var(--ease),
              height var(--dur-med) var(--ease),
              border-color var(--dur-med) var(--ease);
}

.site-header.is-transparent {
  background: linear-gradient(to bottom, rgba(0,0,0,0.55), rgba(0,0,0,0));
}

.site-header.is-scrolled {
  height: 72px;
  background: var(--c-black-pure);
  border-bottom-color: rgba(200,164,91,0.25);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
}

.brand img {
  height: 34px;
  width: auto;
}

@media (min-width: 768px) {
  .brand img { height: 40px; }
}

.nav-desktop {
  display: none;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }
}

.nav-desktop a {
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--c-offwhite);
  position: relative;
  padding-block: 0.4rem;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease);
}

.nav-desktop a:hover::after,
.nav-desktop a.is-active::after { transform: scaleX(1); }

.nav-desktop a.is-active { color: var(--c-gold-light); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-actions .btn { display: none; }

@media (min-width: 1024px) {
  .header-actions .btn { display: inline-flex; }
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
}

.nav-toggle span {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--c-offwhite);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-mobile {
  position: fixed;
  inset: 0;
  top: var(--header-h);
  background: var(--c-black-pure);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease), visibility var(--dur-med);
  z-index: 99;
  overflow-y: auto;
}

.nav-mobile.is-open {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.nav-mobile .container {
  padding-block: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-mobile a {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--c-offwhite);
  padding-block: 0.3rem;
  display: inline-block;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: var(--space-sm);
}

.nav-mobile a.is-active { color: var(--c-gold-light); }

.nav-mobile .btn { align-self: flex-start; margin-top: var(--space-sm); }

@media (min-width: 1024px) {
  .nav-mobile { display: none; }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  color: var(--c-white);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(5,5,5,0.35) 0%, rgba(5,5,5,0.55) 55%, rgba(5,5,5,0.94) 100%);
}

.hero__content {
  padding-block: var(--space-2xl) var(--space-xl);
  max-width: 760px;
}

.hero__content h1 { color: var(--c-white); margin-top: var(--space-sm); }

.hero__content p.lead {
  color: var(--c-text-gray);
  margin-top: var(--space-md);
  max-width: 56ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* Page (interior) header banner, replaces hero on inner pages */
.page-banner {
  position: relative;
  padding-block: calc(var(--header-h) + var(--space-xl)) var(--space-xl);
  background: var(--c-black);
  color: var(--c-white);
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(200,164,91,0.14), transparent 60%);
}

.page-banner .container { position: relative; }
.page-banner h1 { color: var(--c-white); margin-top: var(--space-sm); }
.page-banner p.lead { color: var(--c-text-gray); margin-top: var(--space-sm); max-width: 60ch; }

.breadcrumb {
  display: flex;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--c-text-gray);
  margin-top: var(--space-md);
}
.breadcrumb a { color: var(--c-gold-light); }
.breadcrumb a:hover { text-decoration: underline; }

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--c-white);
  border: 1px solid rgba(37,40,45,0.09);
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.card:hover { border-color: var(--c-gold); transform: translateY(-3px); }

.card__index {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--c-gold);
  margin-bottom: var(--space-sm);
}

.card h3 { margin-top: var(--space-xs); }
.card p { margin-top: var(--space-xs); color: var(--text-muted); }

.card--dark {
  background: var(--c-graphite);
  border-color: rgba(200,164,91,0.18);
  color: var(--text-on-dark-muted);
}
.card--dark h3 { color: var(--c-white); }
.card--dark:hover { border-color: var(--c-gold); }

/* --------------------------------------------------------------------------
   Methodology / steps
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  gap: var(--space-lg);
  counter-reset: step;
}

@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}

.step {
  position: relative;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(200,164,91,0.35);
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -0.85em;
  left: 0;
  background: var(--bg-page);
  padding-right: 0.6rem;
  font-family: var(--font-serif);
  color: var(--c-gold);
  font-size: 1.1rem;
}

.bg-dark .step,
.bg-dark-alt .step { border-top-color: rgba(200,164,91,0.35); }
.bg-dark .step::before,
.bg-dark-alt .step::before { background: transparent; }

.step h3 { margin-top: var(--space-xs); font-size: 1.15rem; }
.step p { margin-top: var(--space-xs); font-size: 0.95rem; }

/* --------------------------------------------------------------------------
   Tag / category pill
   -------------------------------------------------------------------------- */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold);
  border: 1px solid var(--c-gold);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-lg);
}

.filter-btn {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  border: 1px solid rgba(37,40,45,0.18);
  border-radius: 999px;
  color: var(--text-body);
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.filter-btn:hover { border-color: var(--c-gold); }

.filter-btn.is-active {
  background: var(--c-black);
  border-color: var(--c-black);
  color: var(--c-white);
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.field label {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-body);
}

.on-dark .field label { color: var(--c-offwhite); }

.field input,
.field textarea,
.field select {
  background: var(--c-white);
  border: 1px solid rgba(37,40,45,0.25);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  font-size: 1rem;
  color: var(--text-body);
  transition: border-color var(--dur-fast) var(--ease);
}

.field textarea { resize: vertical; min-height: 140px; }

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--c-gold);
}

.field.has-error input,
.field.has-error textarea,
.field.has-error select {
  border-color: #B3403A;
}

.field__error {
  font-size: 0.82rem;
  color: #B3403A;
  min-height: 1.1em;
}

.field__hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-status {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  display: none;
}

.form-status.is-visible { display: block; }
.form-status.is-success { background: rgba(200,164,91,0.14); border: 1px solid var(--c-gold); }
.form-status.is-error { background: rgba(179,64,58,0.1); border: 1px solid #B3403A; }

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
}
.checkbox-field input { margin-top: 0.3rem; width: 16px; height: 16px; }
.checkbox-field label { font-weight: 400; text-transform: none; font-size: 0.9rem; letter-spacing: normal; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--c-black-pure);
  color: var(--c-text-gray);
  padding-block: var(--space-xl) var(--space-lg);
}

.footer-grid {
  display: grid;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}

.footer-brand img { height: 34px; margin-bottom: var(--space-sm); }
.footer-brand p { font-size: 0.9rem; max-width: 32ch; }

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-white);
  margin-bottom: var(--space-sm);
}

.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a, .footer-col address { font-size: 0.9rem; font-style: normal; }
.footer-col a:hover { color: var(--c-gold-light); }

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  font-size: 0.82rem;
}

@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
}

.footer-bottom a:hover { color: var(--c-gold-light); }

/* --------------------------------------------------------------------------
   Back to top
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  right: var(--space-md);
  bottom: var(--space-md);
  z-index: 80;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-black);
  color: var(--c-gold);
  border: 1px solid var(--c-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), visibility var(--dur-fast);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Reveal animation
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* --------------------------------------------------------------------------
   Share buttons
   -------------------------------------------------------------------------- */
.share-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border: 1px solid rgba(37,40,45,0.2);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.share-btn:hover { border-color: var(--c-gold); color: var(--c-gold); }

/* --------------------------------------------------------------------------
   Pagination (blog)
   -------------------------------------------------------------------------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--space-lg);
}
.pagination button {
  min-width: 40px;
  height: 40px;
  border: 1px solid rgba(37,40,45,0.18);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}
.pagination button.is-active { background: var(--c-black); color: var(--c-white); border-color: var(--c-black); }
.pagination button:hover:not(.is-active) { border-color: var(--c-gold); }

/* --------------------------------------------------------------------------
   Search field (blog)
   -------------------------------------------------------------------------- */
.search-field {
  position: relative;
  max-width: 420px;
  margin-bottom: var(--space-md);
}
.search-field input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.6rem;
  border: 1px solid rgba(37,40,45,0.25);
  border-radius: 999px;
  background: var(--c-white);
}
.search-field input:focus { border-color: var(--c-gold); }
.search-field svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
}