/* ==========================================================================
   UI COMPONENTS
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  font-family: var(--font-family-heading);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--color-primary-900);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.25);
}

.btn-primary:hover {
  color: var(--color-primary-900);
  box-shadow: 0 6px 20px rgba(0, 255, 200, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-400);
  border: 1px solid var(--color-accent-400);
}

.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.btn-glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-neutral-100);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Cards */
.card {
  background-color: var(--color-primary-800);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  border: 1px solid var(--color-neutral-800);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .card {
    padding: 24px;
  }
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-600);
}

.card:hover::before {
  opacity: 1;
}

.card-glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.1);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-accent {
  background-color: rgba(0, 212, 255, 0.1);
  color: var(--color-accent-400);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  color: var(--color-neutral-300);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.form-control {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-neutral-800);
  border-radius: var(--radius-md);
  color: var(--color-neutral-100);
  transition: all var(--transition-normal);
}

.form-control:focus {
  border-color: var(--color-accent-400);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.form-control::placeholder {
  color: var(--color-neutral-600);
}

/* Touch Feedback (Active State) */
.btn:active { transform: scale(0.96) !important; transition: transform 0.1s; }
.card:active { transform: scale(0.98) !important; transition: transform 0.1s; }