/* 
UNIFIED COMPONENTS SYSTEM
Phase 3a CSS Consolidation: components-unified.css + paginator-styles.css → components.css
Consolidates buttons, cards, pagination, and toast notifications
Design Token-based with CSS Variables for consistency
Created: Phase 2C CSS Architecture Consolidation
Updated: 2025-10-14 - Phase 3b Toast System Added
*/

/* ==========================================================================
   TOAST NOTIFICATION SYSTEM
   Centralized toast/alert system for utilities.js
   ========================================================================== */

.toast-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  min-width: 300px;
  max-width: 500px;
  padding: 1rem 1.5rem;
  background: white;
  border-radius: var(--border-radius-md, 8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10000;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
  border-left: 4px solid;
}

.toast-notification.toast-visible {
  opacity: 1;
  transform: translateX(0);
}

.toast-notification.toast-hidden {
  opacity: 0;
  transform: translateX(100%);
}

.toast-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--gray-800, #1f2937);
}

.toast-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gray-500, #6b7280);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.toast-close:hover {
  background: var(--gray-100, #f3f4f6);
  color: var(--gray-700, #374151);
}

/* Toast Type Variants */
.toast-success {
  border-left-color: var(--success-600, #16a34a);
  background: var(--success-50, #f0fdf4);
}

.toast-success .toast-icon {
  color: var(--success-600, #16a34a);
}

.toast-error {
  border-left-color: var(--danger-600, #dc2626);
  background: var(--danger-50, #fef2f2);
}

.toast-error .toast-icon {
  color: var(--danger-600, #dc2626);
}

.toast-warning {
  border-left-color: var(--warning-600, #d97706);
  background: var(--warning-50, #fffbeb);
}

.toast-warning .toast-icon {
  color: var(--warning-600, #d97706);
}

.toast-info {
  border-left-color: var(--primary-600, #2563eb);
  background: var(--primary-50, #eff6ff);
}

.toast-info .toast-icon {
  color: var(--primary-600, #2563eb);
}

/* Mobile Responsive - Standardized to Bootstrap 5 sm breakpoint (576px) */
@media (max-width: 576px) {
  .toast-notification {
    right: 10px;
    left: 10px;
    min-width: auto;
    max-width: none;
  }
}

/* ==========================================================================
   UNIFIED FILTER COMPONENT
   Replaces: .challenge-filter and .community-filter
   ========================================================================== */

.unified-filter {
  background: var(--white);
  border: 2px solid var(--primary-400);
  border-radius: var(--rounded-lg);
  padding: 2.5rem;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
  position: sticky;
  top: 2rem;
  transition: all 0.3s ease;
}

.unified-filter:hover {
  border-color: var(--primary-500);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.25);
  transform: translateY(-2px);
}

.unified-filter__label {
  display: block;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.unified-filter__input {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--rounded-md);
  font-size: 1rem;
  transition: all 0.2s ease;
  font-family: var(--font-body);
  font-weight: 500;
}

.unified-filter__input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 4px var(--primary-100);
}

.unified-filter__input::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

.unified-filter__results-count {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--primary-700);
  font-weight: 600;
}

/* ==========================================================================
   UNIFIED BUTTON SYSTEM
   Replaces: style.css, friends.css, communities.css, challenge-sharing.css
   ========================================================================== */

/* === BASE BUTTON STYLES === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs, 0.25rem);
  padding: var(--space-sm, 0.5rem) var(--space-lg, 1.5rem);
  border-radius: var(--border-radius-md, 8px);
  font-weight: 600;
  font-size: var(--font-size-base, 1rem);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.5;
  white-space: nowrap;
  user-select: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.btn:focus {
  outline: 2px solid var(--primary-500, #3b82f6);
  outline-offset: 2px;
}

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

/* === COLOR VARIANTS === */
.btn--primary,
.btn-primary {
  background: linear-gradient(135deg, var(--primary-600, #2563eb) 0%, var(--primary-700, #1d4ed8) 100%);
  color: var(--white, #ffffff);
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0,0,0,0.1));
}

.btn--primary:hover,
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-700, #1d4ed8) 0%, var(--primary-800, #1e40af) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1));
  color: var(--white, #ffffff);
}

.btn--secondary,
.btn-secondary {
  background: var(--white, #ffffff);
  color: var(--gray-700, #374151);
  border-color: var(--gray-300, #d1d5db);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.05));
}

.btn--secondary:hover,
.btn-secondary:hover {
  background: var(--gray-50, #f9fafb);
  border-color: var(--gray-400, #9ca3af);
  color: var(--gray-800, #1f2937);
  transform: translateY(-1px);
}

.btn--success,
.btn-success {
  background: linear-gradient(135deg, var(--success-600, #16a34a) 0%, var(--success-700, #15803d) 100%);
  color: var(--white, #ffffff);
}

.btn--success:hover,
.btn-success:hover {
  background: linear-gradient(135deg, var(--success-700, #15803d) 0%, var(--success-800, #166534) 100%);
  color: var(--white, #ffffff);
  transform: translateY(-2px);
}

.btn--warning,
.btn-warning {
  background: linear-gradient(135deg, var(--warning-500, #f59e0b) 0%, var(--warning-600, #d97706) 100%);
  color: var(--white, #ffffff);
}

.btn--warning:hover,
.btn-warning:hover {
  background: linear-gradient(135deg, var(--warning-600, #d97706) 0%, var(--warning-700, #b45309) 100%);
  color: var(--white, #ffffff);
  transform: translateY(-2px);
}

.btn--danger,
.btn-danger {
  background: linear-gradient(135deg, var(--error-600, #dc2626) 0%, var(--error-700, #b91c1c) 100%);
  color: var(--white, #ffffff);
}

.btn--danger:hover,
.btn-danger:hover {
  background: linear-gradient(135deg, var(--error-700, #b91c1c) 0%, var(--error-800, #991b1b) 100%);
  color: var(--white, #ffffff);
  transform: translateY(-2px);
}

/* === OUTLINE VARIANTS === */
.btn--outline,
.btn-outline {
  background: transparent;
  color: var(--primary-600, #2563eb);
  border-color: var(--primary-600, #2563eb);
}

.btn--outline:hover,
.btn-outline:hover {
  background: var(--primary-600, #2563eb);
  color: var(--white, #ffffff);
}

.btn-outline-primary,
.btn--outline-primary {
  background: transparent;
  color: var(--primary-600, #2563eb);
  border-color: var(--primary-600, #2563eb);
}

.btn-outline-primary:hover,
.btn--outline-primary:hover {
  background: var(--primary-600, #2563eb);
  color: var(--white, #ffffff);
}

.btn-outline-secondary,
.btn--outline-secondary {
  background: transparent;
  color: var(--gray-600, #4b5563);
  border-color: var(--gray-300, #d1d5db);
}

.btn-outline-secondary:hover,
.btn--outline-secondary:hover {
  background: var(--gray-600, #4b5563);
  color: var(--white, #ffffff);
}

.btn-outline-danger,
.btn--outline-danger {
  background: transparent;
  color: var(--danger-600, #dc2626);
  border-color: var(--danger-600, #dc2626);
}

.btn-outline-danger:hover,
.btn--outline-danger:hover {
  background: var(--danger-600, #dc2626);
  color: var(--white, #ffffff);
}

/* === SIZE VARIANTS === */
.btn--sm,
.btn-sm {
  padding: var(--space-xs, 0.25rem) var(--space-md, 1rem);
  font-size: var(--font-size-sm, 0.875rem);
}

.btn--lg,
.btn-lg {
  padding: var(--space-md, 1rem) var(--space-xl, 2rem);
  font-size: var(--font-size-lg, 1.125rem);
}

/* === MODERN VARIANTS === */
.btn-primary-modern {
  background: linear-gradient(135deg, var(--primary-600, #2563eb) 0%, var(--primary-700, #1d4ed8) 100%);
  color: var(--white, #ffffff);
  border: none;
  padding: var(--space-md, 1rem) var(--space-xl, 2rem);
  font-weight: 600;
  box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1));
}

.btn-primary-modern:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl, 0 20px 25px rgba(0,0,0,0.15));
}

.btn-secondary-modern {
  background: var(--white, #ffffff);
  color: var(--gray-700, #374151);
  border: 2px solid var(--gray-200, #e5e7eb);
  padding: var(--space-md, 1rem) var(--space-xl, 2rem);
  font-weight: 600;
}

.btn-secondary-modern:hover {
  border-color: var(--primary-300, #93c5fd);
  color: var(--primary-700, #1d4ed8);
  transform: translateY(-2px);
}

.btn-tertiary-modern {
  background: transparent;
  color: var(--gray-600, #4b5563);
  border: 2px solid var(--gray-300, #d1d5db);
  padding: var(--space-md, 1rem) var(--space-xl, 2rem);
  font-weight: 600;
}

.btn-tertiary-modern:hover {
  background: var(--gray-50, #f9fafb);
  border-color: var(--gray-400, #9ca3af);
  transform: translateY(-1px);
}

/* === SPECIAL BUTTONS === */
.btn-copy-inline {
  background: var(--primary-600, #2563eb);
  color: var(--white, #ffffff);
  border: none;
  padding: var(--space-sm, 0.5rem) var(--space-lg, 1.5rem);
  font-weight: 500;
  white-space: nowrap;
}

.btn-copy-inline:hover {
  background: var(--primary-700, #1d4ed8);
}

.btn-copy-inline.copied {
  background: var(--success-500, #22c55e);
  animation: pulse 0.6s ease-out;
}

/* === ICON-ONLY BUTTONS === */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

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

/* === BUTTON GROUPS === */
.btn-group {
  display: inline-flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-group--vertical {
  flex-direction: column;
  align-items: stretch;
}

/* ==========================================================================
   UNIFIED CARD SYSTEM
   Replaces: .challenge-box, .trust-card, .feature-card, .detail-card, etc.
   ========================================================================== */

/* === BASE CARD STYLES === */
.card {
  background: var(--white, #ffffff);
  border-radius: var(--border-radius-lg, 12px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1));
  padding: var(--space-lg, 1.5rem);
  margin-bottom: var(--space-md, 1rem);
  transition: all 0.2s ease;
  border: 1px solid var(--gray-200, #e5e7eb);
  position: relative;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0,0,0,0.1));
  transform: translateY(-2px);
  border-color: var(--gray-300, #d1d5db);
}

.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1));
  transform: translateY(-3px);
}

/* === SIZE VARIANTS === */
.card--sm {
  padding: var(--space-md, 1rem);
  border-radius: var(--border-radius-md, 8px);
}

.card--lg {
  padding: var(--space-xl, 2rem);
  border-radius: var(--border-radius-xl, 16px);
}

.card--xl {
  padding: 3rem;
  border-radius: var(--border-radius-xl, 16px);
}

/* === COLOR VARIANTS === */
.card--primary {
  border-left: 4px solid var(--primary-500, #3b82f6);
  background: linear-gradient(135deg, var(--white, #ffffff) 0%, var(--primary-50, #eff6ff) 100%);
}

.card--success {
  border-left: 4px solid var(--success-500, #22c55e);
  background: linear-gradient(135deg, var(--white, #ffffff) 0%, var(--success-50, #f0fdf4) 100%);
}

.card--warning {
  border-left: 4px solid var(--warning-500, #f59e0b);
  background: linear-gradient(135deg, var(--white, #ffffff) 0%, var(--warning-50, #fffbeb) 100%);
}

.card--danger {
  border-left: 4px solid var(--error-500, #ef4444);
  background: linear-gradient(135deg, var(--white, #ffffff) 0%, var(--error-50, #fef2f2) 100%);
}

/* === CARD COMPONENTS === */
.card-header {
  margin: calc(var(--space-lg, 1.5rem) * -1) calc(var(--space-lg, 1.5rem) * -1) var(--space-lg, 1.5rem);
  padding: var(--space-lg, 1.5rem);
  background: var(--gray-50, #f9fafb);
  border-bottom: 1px solid var(--gray-200, #e5e7eb);
  border-radius: var(--border-radius-lg, 12px) var(--border-radius-lg, 12px) 0 0;
}

.card-body {
  /* Inherits card padding */
}

.card-footer {
  margin: var(--space-lg, 1.5rem) calc(var(--space-lg, 1.5rem) * -1) calc(var(--space-lg, 1.5rem) * -1);
  padding: var(--space-lg, 1.5rem);
  background: var(--gray-50, #f9fafb);
  border-top: 1px solid var(--gray-200, #e5e7eb);
  border-radius: 0 0 var(--border-radius-lg, 12px) var(--border-radius-lg, 12px);
}

.card-title {
  margin: 0 0 var(--space-md, 1rem) 0;
  font-size: var(--font-size-xl, 1.25rem);
  font-weight: 700;
  color: var(--gray-900, #111827);
}

.card-subtitle {
  margin: 0 0 var(--space-sm, 0.5rem) 0;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--gray-600, #4b5563);
  font-weight: 500;
}

.card-text {
  margin: 0 0 var(--space-md, 1rem) 0;
  color: var(--gray-700, #374151);
  line-height: 1.6;
}

.card-text:last-child {
  margin-bottom: 0;
}

/* === LEGACY ALIASES === */
/* .challenge-box removed - no longer used after dashboard refactoring */

.trust-card {
  background: var(--white, #ffffff);
  border-radius: var(--border-radius-lg, 12px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1));
  padding: var(--space-lg, 1.5rem);
  margin-bottom: var(--space-md, 1rem);
  transition: all 0.2s ease;
  border: 1px solid var(--gray-200, #e5e7eb);
  border-left: 4px solid var(--success-500, #22c55e);
}

.feature-card {
  background: var(--white, #ffffff);
  border-radius: var(--border-radius-lg, 12px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1));
  padding: var(--space-lg, 1.5rem);
  margin-bottom: var(--space-md, 1rem);
  transition: all 0.2s ease;
  border: 1px solid var(--gray-200, #e5e7eb);
  cursor: pointer;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg, 0 10px 15px rgba(0,0,0,0.1));
  transform: translateY(-3px);
}

.detail-card {
  background: var(--white, #ffffff);
  border-radius: var(--border-radius-xl, 16px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.1));
  padding: var(--space-xl, 2rem);
  margin-bottom: var(--space-md, 1rem);
  transition: all 0.2s ease;
  border: 1px solid var(--gray-200, #e5e7eb);
}

/* ==========================================================================
   PAGINATOR SYSTEM
   Unified pagination styles across the platform
   ========================================================================== */

/* === PAGINATOR SECTION === */
.paginator-section {
  margin: 1.5rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--gray-200);
}

.paginator-info {
  text-align: center;
  margin-bottom: 1rem;
}

.paginator-counter {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(108, 117, 125, 0.1);
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--gray-500);
  border: 1px solid rgba(108, 117, 125, 0.2);
  font-style: italic;
}

.paginator-actions {
  text-align: center;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* === PAGINATOR BUTTON STYLES === */
.paginator-btn {
  min-width: 200px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.paginator-btn span {
  font-size: 1em;
  line-height: 1;
}

.paginator-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* === HIDDEN CONTENT === */
.hidden-comments,
.hidden-entries {
  margin-top: 1rem;
  border-top: 2px solid var(--gray-100);
  padding-top: 1rem;
  animation: slideDown 0.3s ease-out;
}

/* === PAGINATOR ANIMATIONS === */
@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    max-height: 1000px;
    transform: translateY(0);
  }
}

/* === LOADING STATES === */
.paginator-btn.loading {
  position: relative;
  color: transparent;
}

.paginator-btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* === SUCCESS STATE === */
.paginator-section.all-visible .paginator-counter {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success-600);
  border-color: rgba(34, 197, 94, 0.2);
}

.paginator-section.all-visible .paginator-counter::before {
  content: "✅ ";
}

/* ==========================================================================
   RESPONSIVE DESIGN - Bootstrap 5 md breakpoint (768px)
   Using CSS variables from variables.css: --breakpoint-md: 768px
   ========================================================================== */

@media (max-width: 768px) {
  .card {
    padding: var(--space-md, 1rem);
    margin-bottom: var(--space-sm, 0.5rem);
  }
  
  .card--lg {
    padding: var(--space-lg, 1.5rem);
  }
  
  .card--xl {
    padding: var(--space-xl, 2rem);
  }
  
  .btn {
    padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
  }
  
  .btn--lg {
    padding: var(--space-md, 1rem) var(--space-lg, 1.5rem);
    font-size: var(--font-size-base, 1rem);
  }
  
  .paginator-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .paginator-btn {
    width: 100%;
    max-width: 300px;
    min-width: auto;
  }
  
  .paginator-section {
    margin: 1rem 0;
    padding: 0.75rem 0;
  }
  
  .unified-filter {
    padding: 1.5rem;
    position: static;
  }
  
  .unified-filter__input {
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
  }
  
  .unified-filter__label {
    font-size: 1rem;
  }
}