/* =========================================================
   SCROLL PROGRESS BAR
   ========================================================= */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2.5px;
  width: 0%;
  background: var(--color-gold);
  z-index: 200;
  transition: width 80ms linear;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: clamp(0.8em, 1.5vw, 0.95em) clamp(1.3em, 3vw, 1.7em);
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  position: relative;
  will-change: transform;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.btn:hover { transform: translateY(-3px) scale(1.02); }
.btn:active { transform: translateY(-1px) scale(1); }

.btn--primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { box-shadow: var(--shadow-lg); }

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--text-primary);
}
.btn--secondary:hover { background: var(--text-primary); color: var(--surface-page); }

.btn--whatsapp {
  background: var(--surface-card);
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}
.btn--whatsapp:hover { border-color: var(--color-gold); color: var(--color-gold-dark); }

.btn--small { padding: 0.6em 1.1em; font-size: 0.85rem; }
.btn--large { padding: 1.15em 2.3em; font-size: 1.02rem; }

.icon-wa { flex-shrink: 0; }

/* =========================================================
   STICKY NAVIGATION — shrinks height/padding on scroll
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.nav-bar {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(0.7rem, 2vw, 0.95rem) var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: padding var(--dur-fast) var(--ease-out);
}
.site-header.is-scrolled .nav-bar { padding-block: 0.55rem; }

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.nav-logo__text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.nav-logo__text em { color: var(--color-gold-dark); font-style: normal; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  position: relative;
  padding: 0.2em 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1.5px;
  background: var(--color-gold);
  transition: width var(--dur-fast) var(--ease-out);
}
.nav-links a:hover::after,
.nav-links a.is-active::after { width: 100%; }
.nav-links a.is-active { color: var(--color-gold-dark); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  color: var(--text-primary);
  transition: border-color var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--color-gold); transform: rotate(14deg); }
.theme-toggle svg { display: block; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.4rem;
}
.nav-toggle span {
  width: 22px; height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--dur-fast) ease, opacity var(--dur-fast) ease;
}

/* =========================================================
   CARDS — subtle glass effect, soft shadow instead of flat border
   ========================================================= */
.glass-card {
  background: var(--surface-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.glass-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* =========================================================
   FORM FIELDS + VALIDATION STATES
   ========================================================= */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}
.field-input {
  width: 100%;
  padding: 0.75em 0.9em;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: border-color var(--dur-fast) ease;
}
.field-input:focus { border-color: var(--color-gold); outline: none; }
.field-input[aria-invalid="true"] { border-color: #C0392B; }
.field-error {
  font-size: 0.78rem;
  color: #C0392B;
  min-height: 1em;
}
textarea.field-input { resize: vertical; min-height: 90px; }

.lead-form {
  margin-top: 1.6rem;
  padding: clamp(1rem, 3vw, 1.3rem);
  background: var(--surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  max-width: 560px;
}
.lead-form__label {
  margin: 0 0 0.8rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}
.lead-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.6rem;
  align-items: start;
}
.lead-form__submit { padding: 0.75em 1.3em; white-space: nowrap; height: 42px; }

.qualify-form {
  margin-top: 2rem;
  padding: clamp(1.4rem, 4vw, 2.2rem);
  background: var(--surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-align: left;
  max-width: 640px;
  margin-inline: auto;
}
.qualify-form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.2rem;
}
.qualify-form__grid .field--full { grid-column: 1 / -1; }

/* =========================================================
   FAQ
   ========================================================= */
.faq__list {
  max-width: 760px;
  border-top: 1px solid var(--border-color);
}
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.4rem 2.2rem 1.4rem 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text-primary);
  position: relative;
  transition: color var(--dur-fast) ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 1.3rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-gold);
  transition: transform var(--dur-fast) var(--ease-out);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--color-gold-dark); }
.faq-item__body { padding: 0 2.2rem 1.6rem 0; max-width: 62ch; }
.faq-item__body p { margin: 0; font-size: 0.96rem; }

/* =========================================================
   MOBILE STICKY CTA BAR + FLOATING WHATSAPP BUTTON
   ========================================================= */
.mobile-cta-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 95;
  gap: 0.6rem;
  padding: 0.7rem var(--gutter);
  padding-bottom: calc(0.7rem + env(safe-area-inset-bottom));
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}
.mobile-cta-bar .btn { flex: 1; }

.fab-whatsapp {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-black);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out),
              transform var(--dur-med) var(--ease-out),
              background var(--dur-fast) ease;
  z-index: 90;
}
.fab-whatsapp.is-visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.fab-whatsapp:hover { background: #000; }

@media (max-width: 720px) {
  .mobile-cta-bar { display: flex; }
  .fab-whatsapp { display: none; }
  body { padding-bottom: 4.2rem; }
}