/* Estilos específicos para transformar-a4.html */

.a4-tool-card {
  max-width: 850px;
  margin: 0 auto 2rem;
  padding: 1.5rem;
  background: var(--card-bg, #ffffff);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.a4-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.a4-label {
  font-weight: 700;
}

.a4-file-input,
.a4-select {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #fff;
  color: #111827;
  font: inherit;
}

.a4-file-input:focus,
.a4-select:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  border-color: #2563eb;
}

.a4-file-info {
  min-height: 1.5rem;
  color: #475569;
  overflow-wrap: anywhere;
}

.a4-options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.a4-notice {
  margin: 1rem 0;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  background: rgba(37, 99, 235, 0.08);
  color: #1e3a8a;
}

.a4-progress-wrap {
  margin-top: 1rem;
}

.a4-progress-track {
  height: 10px;
  margin-bottom: 0.45rem;
  overflow: hidden;
  background: #e2e8f0;
  border-radius: 999px;
}

.a4-progress-bar {
  height: 100%;
  background: #2563eb;
  border-radius: inherit;
  transition: width 0.2s ease;
}

.a4-status {
  min-height: 1.5rem;
  margin-top: 1rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.a4-status--info {
  color: #1d4ed8;
}

.a4-status--success {
  color: #15803d;
}

.a4-status--error {
  color: #b91c1c;
}

#a4Submit:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

@media (max-width: 680px) {
  .a4-tool-card {
    padding: 1rem;
  }

  .a4-options-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  .a4-tool-card {
    background: var(--card-bg, #111827);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .a4-file-input,
  .a4-select {
    background: #0f172a;
    border-color: #475569;
    color: #f8fafc;
  }

  .a4-file-info {
    color: #cbd5e1;
  }

  .a4-notice {
    background: rgba(59, 130, 246, 0.16);
    color: #bfdbfe;
  }
}