/* ============================================================
   FORM STATES — drgersonneto.com
   Estados de erro + sucesso premium para forms de aquisição.
   Usado por: corporativo, mentoria, palestras.
   Paleta V3 Clinical High-Fidelity · S076 · 2026-05-15
   ============================================================ */

/* ---------- ESTADO DE ERRO (inline abaixo do form) ---------- */

.form-state--error {
  display: none;
  align-items: flex-start;
  gap: 12px;
  margin-top: 20px;
  padding: 16px 20px;
  background: rgba(220, 38, 38, 0.05);
  border-left: 3px solid #DC2626;
  border-radius: 4px;
  font-family: var(--f-sans, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink, #0F172A);
  animation: form-state-fade-in 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

.form-state--error.visible {
  display: flex;
}

.form-state--error svg {
  flex-shrink: 0;
  margin-top: 2px;
}

/* Variante dark (para usar dentro de sections com fundo escuro) */
.section--dark .form-state--error,
.block-dark .form-state--error {
  background: rgba(220, 38, 38, 0.10);
  color: #F1F5F9;
  border-left-color: #F87171;
}

/* ---------- ESTADO DE SUCESSO (substitui o form após envio) ---------- */

.form-state--success {
  display: block;
  text-align: center;
  padding: 64px 32px 56px;
  background: #FFFFFF;
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 6px;
  font-family: var(--f-sans, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.form-state--success::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, #2563EB 50%, transparent 100%);
  opacity: 0.6;
}

.form-state--success[hidden] {
  display: none;
}

.form-state__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: 24px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.06);
}

.form-state__title {
  font-family: var(--f-display, Georgia, 'Times New Roman', serif);
  font-size: clamp(24px, 2.2vw, 32px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink, #0F172A);
  margin: 0 0 16px;
}

.form-state__title em {
  font-style: italic;
  color: #2563EB;
}

.form-state--success .form-state__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-mid, #475569);
  font-weight: 300;
  max-width: 460px;
  margin: 0 auto 24px;
}

.form-state__meta {
  font-family: var(--f-mono, ui-monospace, 'SF Mono', Menlo, monospace);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim, #94A3B8);
  margin: 0;
}

.form-state__meta a {
  color: inherit;
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
  text-decoration: none;
  transition: color 200ms ease, border-color 200ms ease;
}

.form-state__meta a:hover {
  color: #2563EB;
  border-bottom-color: #2563EB;
}

/* ---------- VARIANTE DARK SUCCESS ---------- */
.section--dark .form-state--success,
.block-dark .form-state--success {
  background: rgba(15, 23, 42, 0.4);
  border-color: rgba(241, 245, 249, 0.08);
  backdrop-filter: blur(8px);
}

.section--dark .form-state__title,
.block-dark .form-state__title {
  color: #F1F5F9;
}

.section--dark .form-state__title em,
.block-dark .form-state__title em {
  color: #60A5FA;
}

.section--dark .form-state__icon,
.block-dark .form-state__icon {
  background: rgba(96, 165, 250, 0.08);
}

.section--dark .form-state--success .form-state__text,
.block-dark .form-state--success .form-state__text {
  color: #94A3B8;
}

.section--dark .form-state__meta,
.block-dark .form-state__meta {
  color: #64748B;
}

/* ---------- LOADING STATE DO BOTÃO ---------- */

button[type="submit"][data-loading="true"] {
  position: relative;
  color: transparent !important;
  pointer-events: none;
  opacity: 0.85;
}

button[type="submit"][data-loading="true"]::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  opacity: 0.85;
  color: #FFFFFF;
  animation: form-spinner 720ms linear infinite;
}

.section--dark button[type="submit"][data-loading="true"]::after,
.block-dark button[type="submit"][data-loading="true"]::after {
  color: #0F172A;
}

@keyframes form-spinner {
  to { transform: rotate(360deg); }
}

@keyframes form-state-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .form-state--success,
  .form-state--error,
  button[type="submit"][data-loading="true"]::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ---------- MOBILE ---------- */
@media (max-width: 600px) {
  .form-state--success {
    padding: 48px 20px 40px;
  }
  .form-state__icon {
    width: 56px;
    height: 56px;
    margin-bottom: 18px;
  }
  .form-state__icon svg {
    width: 28px;
    height: 28px;
  }
}