/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-secondary);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  transform: translateX(-100%);
  transition: transform var(--transition);
}
.btn:hover::before { transform: translateX(0); }

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 20px var(--shadow-color);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--shadow-color);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-hover);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  transform: translateY(-2px);
}

.btn-gold {
  background: var(--gradient-3);
  color: #fff;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.25);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
}

.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-md { padding: 12px 28px; font-size: 0.9rem; }
.btn-lg { padding: 14px 36px; font-size: 0.95rem; }
.btn-block { width: 100%; justify-content: center; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
}

.card-hover:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--shadow-color);
}

/* ============================================================
   TAGS
   ============================================================ */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: border-color var(--transition);
  width: 100%;
}
.form-input:focus { border-color: var(--accent); }
.form-textarea { resize: vertical; min-height: 110px; }

/* ============================================================
   LOGO
   ============================================================ */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-1);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 1rem;
  font-weight: 900;
}

.logo-text { letter-spacing: -0.5px; }

.logo-accent {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============================================================
   WHATSAPP FLOATING BUTTON
   ============================================================ */
.whatsapp-btn {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 99;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
  transition: all var(--transition-bounce);
  animation: whatsappPulse 2s ease-in-out infinite;
}
.whatsapp-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}

@keyframes whatsappPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3); }
  50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.5); }
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 98;
  width: 44px;
  height: 44px;
  background: var(--gradient-1);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 16px var(--shadow-color);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow-color);
}