.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-accent {
  background: var(--accent);
  color: white;
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.btn-whatsapp {
  background: #25d366;
  color: white;
}

.btn-whatsapp:hover {
  background: #1da851;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 24px;
}

.card-title {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--text);
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: var(--primary-soft);
  color: var(--primary);
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.badge-success {
  background: #e8f5e9;
  color: var(--success);
}

.badge-warning {
  background: #fff3e0;
  color: var(--warning);
}

.badge-danger {
  background: #fce4ec;
  color: var(--danger);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-error {
  color: var(--danger);
  font-size: 0.8rem;
  margin-top: 4px;
  display: none;
}

.form-error.visible {
  display: block;
}

.alert {
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.9rem;
  display: none;
}

.alert.visible {
  display: block;
}

.alert-success {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
}

.alert-error {
  background: #fce4ec;
  color: #c62828;
  border: 1px solid #ef9a9a;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-secondary); }

/* Spinner */
.btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 96px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s;
  cursor: pointer;
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* Testimonials */
.testimonials {
  background: linear-gradient(135deg, var(--primary-soft) 0%, var(--bg) 100%);
}

.testimonials-grid {
  display: flex;
  gap: 24px;
}

.testimonial-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border-light);
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.testimonial-stars {
  color: #f5a623;
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-text::before {
  content: '"';
  font-size: 2rem;
  color: var(--primary);
  font-family: var(--font-heading);
  line-height: 0;
  vertical-align: -0.4em;
  margin-right: 4px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
  flex-shrink: 0;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}

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

/* FAQ */
.faq {
  background: var(--bg-alt);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s;
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  text-align: left;
  background: none;
  transition: color 0.2s;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform 0.3s;
}

.faq-item.open .faq-question svg {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}