/**
 * Planète Jeunesse v2 - Buttons Component
 * Styles pour tous les boutons
 */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-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-md);
  transition: all var(--transition-fast);
}

.btn:hover {
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

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

/* Primary */
.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

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

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

.btn--secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
}

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

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

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

.btn--ghost:hover {
  background-color: var(--color-bg-secondary);
}

/* Light */
.btn--light {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.btn--light:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-bg-tertiary);
}

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

.btn--dark:hover {
  background-color: var(--color-bg-darker);
  border-color: var(--color-bg-darker);
}

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

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

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

.btn--xs {
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn--sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
}

.btn--xl {
  padding: var(--space-5) var(--space-8);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

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

.btn--rounded {
  border-radius: var(--radius-full);
}

.btn--square {
  border-radius: 0;
}

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

.btn--icon {
  padding: var(--space-2);
  width: 40px;
  height: 40px;
}

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

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

.btn--icon svg {
  width: 20px;
  height: 20px;
}

/* =====================================================
   FULL WIDTH BUTTON
   ===================================================== */

.btn--block {
  display: flex;
  width: 100%;
}

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

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

.btn--icon-left svg,
.btn--icon-left .icon {
  margin-right: var(--space-1);
}

.btn--icon-right svg,
.btn--icon-right .icon {
  margin-left: var(--space-1);
}

/* =====================================================
   BUTTON GROUP
   ===================================================== */

.btn-group {
  display: inline-flex;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.btn-group .btn:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

.btn-group .btn:not(:last-child) {
  border-right-width: 1px;
}

/* =====================================================
   LOADING STATE
   ===================================================== */

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

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

.btn--primary.is-loading::after,
.btn--secondary.is-loading::after,
.btn--dark.is-loading::after {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-text-inverse);
}

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

/* =====================================================
   LINK BUTTON
   ===================================================== */

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0;
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.btn-link svg {
  width: 1em;
  height: 1em;
  transition: transform var(--transition-fast);
}

.btn-link:hover svg {
  transform: translateX(4px);
}

/* btn-link dans la sidebar */
.sidebar .btn-link {
  font-size: var(--font-size-sm);
  margin-top: var(--space-3);
}

/* =====================================================
   SOCIAL BUTTONS
   ===================================================== */

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

.btn-social svg {
  width: 20px;
  height: 20px;
}

.btn-social--facebook {
  background-color: #1877F2;
  border-color: #1877F2;
  color: white;
}

.btn-social--x {
  background-color: #000;
  border-color: #000;
  color: white;
}

.btn-social--youtube {
  background-color: #FF0000;
  border-color: #FF0000;
  color: white;
}

/* =====================================================
   FLOATING ACTION BUTTON
   ===================================================== */

.fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-fixed);
}

.fab svg {
  width: 24px;
  height: 24px;
}

/* Scroll to top */
.fab--scroll-top {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition:
    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s ease,
    background 0.3s ease;
}

.fab--scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  animation: fab-bounce-in 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.fab--scroll-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow:
    0 8px 25px rgba(var(--color-primary-rgb, 59, 130, 246), 0.4),
    0 4px 12px rgba(0, 0, 0, 0.15);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.fab--scroll-top:hover svg {
  animation: fab-arrow-bounce 0.6s ease-in-out infinite;
}

.fab--scroll-top:active {
  transform: translateY(-2px) scale(0.98);
  box-shadow:
    0 4px 15px rgba(var(--color-primary-rgb, 59, 130, 246), 0.3),
    0 2px 6px rgba(0, 0, 0, 0.1);
}

.fab--scroll-top:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.fab--scroll-top svg {
  color: white;
  transition: transform 0.2s ease;
}

/* Animation d'apparition avec rebond */
@keyframes fab-bounce-in {
  0% {
    transform: translateY(20px) scale(0.3);
    opacity: 0;
  }
  50% {
    transform: translateY(-8px) scale(1.05);
  }
  70% {
    transform: translateY(4px) scale(0.95);
  }
  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

/* Animation de la flèche au hover */
@keyframes fab-arrow-bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

/* Effet de pulsation subtil quand visible (optionnel, activé après 2s) */
.fab--scroll-top.is-visible.has-pulse {
  animation: fab-pulse 2s ease-in-out infinite;
  animation-delay: 2s;
}

@keyframes fab-pulse {
  0%, 100% {
    box-shadow: var(--shadow-lg);
  }
  50% {
    box-shadow:
      0 6px 20px rgba(var(--color-primary-rgb, 59, 130, 246), 0.35),
      0 0 0 8px rgba(var(--color-primary-rgb, 59, 130, 246), 0.1);
  }
}