/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  transition: background-color var(--dur-fast) var(--ease-soft),
    color var(--dur-fast) var(--ease-soft),
    border-color var(--dur-fast) var(--ease-soft),
    transform var(--dur-fast) var(--ease-soft);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-text-primary);
  color: var(--color-surface);
}

.btn-primary:hover {
  background: var(--color-text-secondary);
}

.btn-outline {
  border: 1.5px solid var(--color-text-primary);
  color: var(--color-text-primary);
}

.btn-outline:hover {
  background: var(--color-text-primary);
  color: var(--color-surface);
}

/* Tarjetas de servicio */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: transform var(--dur-fast) var(--ease-soft),
    box-shadow var(--dur-fast) var(--ease-soft);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -24px rgba(41, 39, 37, 0.25);
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  margin-bottom: var(--space-sm);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Formulario de contacto */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-sm);
}

.form-row label {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.form-row input {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 0.98rem;
  transition: border-color var(--dur-fast) var(--ease-soft);
}

.form-row input:focus {
  border-color: var(--color-text-secondary);
  outline: none;
}

.form-row input:invalid:not(:placeholder-shown) {
  border-color: var(--color-accent);
}

/* Botón volver arriba */
.back-to-top {
  position: fixed;
  right: var(--space-md);
  bottom: var(--space-md);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.9);
  transition: opacity var(--dur-fast) var(--ease-soft),
    transform var(--dur-fast) var(--ease-soft);
  z-index: 400;
}

.back-to-top img {
  width: 100%;
  height: 100%;
}

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

.back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
}

.phone-field {
  display: flex;
  gap: 0.6rem;
}

.phone-field input {
  flex: 1;
  min-width: 0;
}

.country-select {
  position: relative;
  flex: 0 0 auto;
}

.country-select-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 100%;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.7rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-soft);
}

.country-select-toggle:hover,
.country-select-toggle:focus-visible {
  border-color: var(--color-text-secondary);
  outline: none;
}

.country-select.is-open .country-select-toggle {
  border-color: var(--color-text-secondary);
}

.country-select.is-open .country-select-toggle svg {
  transform: rotate(180deg);
}

.country-select-toggle svg {
  color: var(--color-text-muted);
  transition: transform var(--dur-fast) var(--ease-soft);
}

.country-flag {
  width: 22px;
  height: 16px;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink: 0;
}

.country-select-list {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  z-index: 30;
  width: 220px;
  max-height: 260px;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 40px -20px rgba(41, 39, 37, 0.35);
  padding: 0.4rem;
}

.country-select-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.6rem;
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-soft);
}

.country-select-list li:hover,
.country-select-list li[aria-selected="true"] {
  background: var(--color-accent-soft);
}

.country-select-list li img {
  width: 22px;
  height: 16px;
  object-fit: cover;
  border-radius: 2px;
  flex-shrink: 0;
}

.country-select-list li span {
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.form-error {
  min-height: 1.1em;
  font-size: 0.8rem;
  color: #c0554f;
}

.form-submit {
  width: 100%;
  margin-top: var(--space-xs);
}

.form-feedback {
  margin-top: var(--space-sm);
  font-size: 0.92rem;
  font-weight: 500;
}

.form-feedback.is-success {
  color: var(--color-text-secondary);
}

.form-feedback.is-error {
  color: #c0554f;
}