/* Consumer Coach - Button Components - 2026 */

/* ===========================================
   BASE BUTTON
   =========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  transition: all var(--duration-200) var(--ease-out);
  position: relative;
  overflow: hidden;
}

/* Focus state */
.btn:focus-visible {
  outline: 3px solid var(--color-primary-300);
  outline-offset: 3px;
}

/* Disabled state */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===========================================
   BUTTON VARIANTS
   =========================================== */

/* Primary Button - Gradient Green */
.btn-primary {
  background: var(--bg-gradient);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-secondary-600) 100%);
  box-shadow: var(--shadow-green);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  box-shadow: 0 0 0 4px rgba(5, 150, 105, 0.3);
}

/* Secondary Button - Teal */
.btn-secondary {
  background: var(--secondary);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  box-shadow: var(--shadow-teal);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

/* Outline Light (for dark backgrounds) */
.btn-outline-light {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 1);
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-primary-50);
}

/* White Button */
.btn-white {
  background: var(--color-surface);
  color: var(--primary);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.btn-white:hover {
  background: var(--color-gray-50);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-white:active {
  transform: translateY(0);
}

/* Dark Button */
.btn-dark {
  background: var(--dark);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn-dark:hover {
  background: var(--color-primary-800);
}

/* Success Button */
.btn-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-2px);
}

/* Danger Button */
.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: transparent;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
}

/* Warning Button */
.btn-warning {
  background: var(--color-warning);
  color: var(--color-gray-900);
  border-color: transparent;
}

.btn-warning:hover {
  background: #d97706;
  transform: translateY(-2px);
}

/* ===========================================
   BUTTON SIZES
   =========================================== */

.btn-xs {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
}

.btn-md {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

/* ===========================================
   BUTTON SHAPES
   =========================================== */

.btn-square {
  width: 40px;
  height: 40px;
  padding: 0;
}

.btn-circle {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-pill {
  border-radius: var(--radius-full);
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

/* ===========================================
   BUTTON WITH ICON
   =========================================== */

.btn i,
.btn svg {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

.btn-icon-left i:first-child,
.btn-icon-left svg:first-child {
  margin-right: var(--space-2);
}

.btn-icon-right i:last-child,
.btn-icon-right svg:last-child {
  margin-left: var(--space-2);
}

.btn-icon-only {
  width: 40px;
  height: 40px;
  padding: 0;
}

.btn-icon-only.btn-sm {
  width: 32px;
  height: 32px;
}

.btn-icon-only.btn-lg {
  width: 48px;
  height: 48px;
}

/* ===========================================
   BUTTON STATES
   =========================================== */

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ===========================================
   BUTTON GROUPS
   =========================================== */

.btn-group {
  display: inline-flex;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.btn-group .btn {
  border-radius: 0;
  margin-left: -2px;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  margin-left: 0;
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.btn-group-vertical {
  display: inline-flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.btn-group-vertical .btn {
  border-radius: 0;
  margin-top: -2px;
}

.btn-group-vertical .btn:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin-top: 0;
}

.btn-group-vertical .btn:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ===========================================
   RIPPLE EFFECT (2026 Modern)
   =========================================== */

.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-ripple::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s var(--ease-out), height 0.6s var(--ease-out);
}

.btn-ripple:hover::before {
  width: 300px;
  height: 300px;
}

.btn-ripple:active::before {
  background: rgba(255, 255, 255, 0.4);
}

/* ===========================================
   GRADIENT BUTTONS (2026 Modern)
   =========================================== */

.btn-gradient {
  background: var(--bg-gradient);
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
  color: var(--color-text-inverse);
  border: none;
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Shimmer Effect */
.btn-shimmer {
  position: relative;
  overflow: hidden;
}

.btn-shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s ease;
}

.btn-shimmer:hover::after {
  left: 100%;
}

/* ===========================================
   FLOATING ACTION BUTTON (FAB)
   =========================================== */

.fab {
  position: fixed;
  bottom: calc(var(--space-8) + var(--safe-area-bottom));
  right: var(--space-6);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--bg-gradient);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-fixed);
  transition: transform var(--duration-200) var(--ease-bounce),
              box-shadow var(--duration-200) var(--ease-out);
}

.fab:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.fab:active {
  transform: scale(0.95);
}

.fab.sm {
  width: 40px;
  height: 40px;
}

.fab.lg {
  width: 64px;
  height: 64px;
}

/* FAB Extended */
.fab-extended {
  width: auto;
  padding: 0 var(--space-6);
  gap: var(--space-2);
}

.fab-extended span {
  font-weight: var(--font-medium);
}

/* ===========================================
   PRINT STYLES
   =========================================== */

@media print {
  .btn {
    background: transparent !important;
    border: 1px solid var(--border-color) !important;
    color: var(--color-text) !important;
    box-shadow: none !important;
  }
}