/* 
 * CORE MH BUTTONS SYSTEM
 * Estilos para botones y elementos interactivos
 * Compatible con Bootstrap 5.3
 */

/* ===== BUTTON BASE ===== */
.btn,
.core-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  font-family: var(--font-family);
  line-height: var(--leading-normal);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  border-radius: var(--radius-base);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  min-height: 44px; /* Accessibility - touch target */
}

.btn:focus,
.core-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.2);
}

.btn:disabled,
.core-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  transform: none !important;
  box-shadow: none !important;
}

/* ===== PRIMARY BUTTON ===== */
.btn-primary,
.core-btn-primary {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
}

.btn-primary:hover,
.core-btn-primary:hover {
  background: var(--color-burgundy);
  border-color: var(--color-burgundy);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active,
.core-btn-primary:active {
  background: #7a1827;
  border-color: #7a1827;
  transform: translateY(0);
}

.btn-primary:focus,
.core-btn-primary:focus {
  background: var(--color-navy);
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.25);
}

/* ===== SECONDARY BUTTON ===== */
.btn-secondary,
.core-btn-secondary {
  background: var(--color-white);
  border-color: var(--border-default);
  color: var(--text-primary);
}

.btn-secondary:hover,
.core-btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active,
.core-btn-secondary:active {
  background: var(--border-light);
  transform: translateY(0);
}

.btn-secondary:focus,
.core-btn-secondary:focus {
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.15);
}

/* ===== OUTLINE BUTTON ===== */
.btn-outline-primary,
.core-btn-outline {
  background: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn-outline-primary:hover,
.core-btn-outline:hover {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-outline-primary:active,
.core-btn-outline:active {
  background: #05204a;
  border-color: #05204a;
  transform: translateY(0);
}

/* ===== DANGER/ERROR BUTTON ===== */
.btn-danger,
.core-btn-danger {
  background: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-white);
}

.btn-danger:hover,
.core-btn-danger:hover {
  background: #7a1827;
  border-color: #7a1827;
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-danger:active,
.core-btn-danger:active {
  background: #6b1623;
  transform: translateY(0);
}

.btn-danger:focus,
.core-btn-danger:focus {
  box-shadow: 0 0 0 3px rgba(154, 29, 49, 0.25);
}

/* ===== SUCCESS BUTTON ===== */
.btn-success,
.core-btn-success {
  background: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-white);
}

.btn-success:hover,
.core-btn-success:hover {
  background: #16a34a;
  border-color: #16a34a;
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-success:active,
.core-btn-success:active {
  background: #15803d;
  transform: translateY(0);
}

.btn-success:focus,
.core-btn-success:focus {
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
}

/* ===== GHOST/LINK BUTTON ===== */
.btn-link,
.core-btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-navy);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
}

.btn-link:hover,
.core-btn-ghost:hover {
  background: rgba(7, 41, 91, 0.05);
  color: var(--color-burgundy);
  text-decoration: underline;
  transform: none;
}

.btn-link:active,
.core-btn-ghost:active {
  background: rgba(7, 41, 91, 0.1);
  transform: none;
}

.btn-link:focus,
.core-btn-ghost:focus {
  background: transparent;
  color: var(--color-navy);
  box-shadow: 0 0 0 2px rgba(7, 41, 91, 0.15);
}

/* ===== BUTTON SIZES ===== */
.btn-sm,
.core-btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  min-height: 36px;
}

.btn-lg,
.core-btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  border-radius: var(--radius-md);
  min-height: 52px;
}

.btn-xl,
.core-btn-xl {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
  min-height: 60px;
}

/* ===== BUTTON STATES ===== */
.core-btn-loading {
  color: transparent;
  pointer-events: none;
  position: relative;
}

.core-btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin-left: -10px;
  margin-top: -10px;
  border: 2px solid currentColor;
  border-top: 2px solid transparent;
  border-radius: var(--radius-full);
  animation: core-spin 1s linear infinite;
}

.core-btn-loading.core-btn-sm::after {
  width: 16px;
  height: 16px;
  margin-left: -8px;
  margin-top: -8px;
}

.core-btn-loading.core-btn-lg::after {
  width: 24px;
  height: 24px;
  margin-left: -12px;
  margin-top: -12px;
}

@keyframes core-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ===== BUTTON WITH ICONS ===== */
.core-btn-icon {
  padding: var(--space-2);
  min-width: 44px;
  border-radius: var(--radius-base);
}

.core-btn-icon.core-btn-sm {
  padding: var(--space-1);
  min-width: 36px;
  border-radius: var(--radius-sm);
}

.core-btn-icon.core-btn-lg {
  padding: var(--space-3);
  min-width: 52px;
  border-radius: var(--radius-md);
}

.core-btn i,
.btn i {
  font-size: inherit;
}

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

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

.core-btn i:only-child,
.btn i:only-child {
  margin: 0;
}

/* ===== BUTTON GROUPS ===== */
.btn-group,
.core-btn-group {
  position: relative;
  display: inline-flex;
  vertical-align: middle;
}

.btn-group > .btn,
.btn-group > .core-btn,
.core-btn-group > .btn,
.core-btn-group > .core-btn {
  position: relative;
  border-radius: 0;
  margin-left: -2px;
}

.btn-group > .btn:first-child,
.btn-group > .core-btn:first-child,
.core-btn-group > .btn:first-child,
.core-btn-group > .core-btn:first-child {
  margin-left: 0;
  border-top-left-radius: var(--radius-base);
  border-bottom-left-radius: var(--radius-base);
}

.btn-group > .btn:last-child,
.btn-group > .core-btn:last-child,
.core-btn-group > .btn:last-child,
.core-btn-group > .core-btn:last-child {
  border-top-right-radius: var(--radius-base);
  border-bottom-right-radius: var(--radius-base);
}

.btn-group > .btn:hover,
.btn-group > .core-btn:hover,
.core-btn-group > .btn:hover,
.core-btn-group > .core-btn:hover {
  z-index: 1;
}

/* ===== FLOATING ACTION BUTTON ===== */
.core-fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--color-navy);
  color: var(--color-white);
  border: none;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-fixed);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.core-fab:hover {
  background: var(--color-burgundy);
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

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

.core-fab:focus {
  outline: none;
  box-shadow: var(--shadow-lg), 0 0 0 4px rgba(7, 41, 91, 0.2);
}

/* ===== TOGGLE BUTTONS ===== */
.core-toggle-group {
  display: inline-flex;
  background: var(--bg-muted);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
}

.core-toggle {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: none;
  border-radius: var(--radius-base);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.core-toggle:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.05);
}

.core-toggle.active {
  background: var(--color-white);
  color: var(--color-navy);
  box-shadow: var(--shadow-sm);
}

/* ===== DROPDOWN BUTTONS ===== */
.dropdown-toggle::after,
.core-dropdown-toggle::after {
  display: inline-block;
  margin-left: var(--space-2);
  vertical-align: 0.255em;
  content: "";
  border-top: 0.3em solid;
  border-right: 0.3em solid transparent;
  border-bottom: 0;
  border-left: 0.3em solid transparent;
  transition: transform var(--duration-fast) var(--ease-out);
}

.dropdown-toggle[aria-expanded="true"]::after,
.core-dropdown-toggle[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

/* ===== CLOSE BUTTON ===== */
.btn-close,
.core-btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: var(--text-lg);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-base);
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-close:hover,
.core-btn-close:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.btn-close:focus,
.core-btn-close:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(7, 41, 91, 0.15);
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 640px) {
  .core-fab {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 56px;
    height: 56px;
    font-size: var(--text-lg);
  }
  
  .btn,
  .core-btn {
    min-height: 48px; /* Larger touch targets on mobile */
  }
  
  .btn-sm,
  .core-btn-sm {
    min-height: 40px;
  }
  
  .core-btn-group {
    flex-direction: column;
  }
  
  .core-btn-group > .btn,
  .core-btn-group > .core-btn {
    border-radius: 0;
    margin-left: 0;
    margin-top: -2px;
  }
  
  .core-btn-group > .btn:first-child,
  .core-btn-group > .core-btn:first-child {
    margin-top: 0;
    border-top-left-radius: var(--radius-base);
    border-top-right-radius: var(--radius-base);
    border-bottom-left-radius: 0;
  }
  
  .core-btn-group > .btn:last-child,
  .core-btn-group > .core-btn:last-child {
    border-bottom-left-radius: var(--radius-base);
    border-bottom-right-radius: var(--radius-base);
    border-top-right-radius: 0;
  }
}