/*!
 * Cool Digital API Tools - 2025 Component System
 * Modern, accessible components following 2025 design trends
 * Features: Bold styling, warm colors, micro-interactions, accessibility-first
 */

/* ================================
   BUTTON COMPONENTS
   ================================ */

/* Base button styles extending foundation */
.btn {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast) var(--transition-ease);
  min-height: 44px; /* Accessibility - minimum touch target */
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none !important;
}

.btn:not(:disabled):hover {
  transform: translateY(-2px);
}

.btn:not(:disabled):active {
  transform: translateY(0);
}

/* Primary button - main actions */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-6), var(--color-primary-7));
  color: var(--color-surface-primary);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  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 var(--transition-medium) var(--transition-ease);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-7), var(--color-primary-8));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-primary:active {
  background: linear-gradient(135deg, var(--color-primary-8), var(--color-primary-9));
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary:focus-visible {
  box-shadow: var(--shadow-focus);
}

/* Secondary button - supporting actions */
.btn-secondary {
  background: var(--color-surface-secondary);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
  font-weight: var(--font-weight-medium);
}

.btn-secondary:hover {
  background: var(--color-surface-tertiary);
  border-color: var(--color-primary-6);
  color: var(--color-primary-7);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
  background: var(--color-surface-primary);
  border-color: var(--color-primary-7);
}

/* Accent button - call-to-action */
.btn-accent {
  background: linear-gradient(135deg, var(--color-accent-6), var(--color-accent-7));
  color: var(--color-surface-primary);
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.btn-accent:hover {
  background: linear-gradient(135deg, var(--color-accent-7), var(--color-accent-8));
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

/* Ghost button - subtle actions */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid transparent;
  font-weight: var(--font-weight-medium);
}

.btn-ghost:hover {
  background: var(--color-hover-overlay);
  color: var(--color-primary-6);
  border-color: var(--color-border-light);
}

/* Destructive button */
.btn-destructive {
  background: linear-gradient(135deg, var(--error-500), var(--error-600));
  color: white;
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-sm);
}

.btn-destructive:hover {
  background: linear-gradient(135deg, var(--error-600), var(--error-700));
  box-shadow: var(--shadow-md);
}

/* Button sizes */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn-xl {
  padding: var(--space-5) var(--space-8);
  font-size: var(--font-size-xl);
  min-height: 60px;
}

/* Button with icon */
.btn-with-icon {
  gap: var(--space-2);
}

.btn-with-icon .icon {
  width: 1.2em;
  height: 1.2em;
  transition: transform var(--transition-fast) var(--transition-ease);
}

.btn-with-icon:hover .icon {
  transform: scale(1.1);
}

/* Loading state */
.btn-loading {
  position: relative;
  color: transparent;
  cursor: wait;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  color: var(--color-surface-primary);
}

/* ================================
   CARD COMPONENTS
   ================================ */

/* Base card */
.card {
  background: var(--color-surface-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium) var(--transition-ease);
  overflow: hidden;
  padding: var(--space-6);
  border: 1px solid var(--color-border-light);
  position: relative;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Card variants */
.card-elevated {
  box-shadow: var(--shadow-lg);
  border: none;
}

.card-flat {
  box-shadow: none;
  border: 1px solid var(--color-border);
}

.card-outlined {
  border: 2px solid var(--color-primary-3);
  box-shadow: none;
}

/* Interactive cards */
.card-interactive {
  cursor: pointer;
  transition: all var(--transition-medium) var(--transition-ease);
}

.card-interactive:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--color-primary-5);
}

.card-interactive:active {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Card header */
.card-header {
  padding: var(--space-6) var(--space-6) var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4) calc(-1 * var(--space-6));
  background: var(--color-surface-secondary);
}

.card-header h1,
.card-header h2,
.card-header h3,
.card-header h4 {
  margin-bottom: var(--space-2);
}

.card-header p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

/* Card content */
.card-content {
  flex: 1;
}

/* Card footer */
.card-footer {
  padding: var(--space-4) var(--space-6) var(--space-6) var(--space-6);
  margin: var(--space-4) calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) calc(-1 * var(--space-6));
  border-top: 1px solid var(--color-border-light);
  background: var(--color-surface-secondary);
  display: flex;
  gap: var(--space-3);
  align-items: center;
  justify-content: flex-end;
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
  }
}

/* Status cards */
.card-success {
  border-left: 4px solid var(--color-success);
  background: var(--color-success-bg);
}

.card-warning {
  border-left: 4px solid var(--color-warning);
  background: var(--color-warning-bg);
}

.card-error {
  border-left: 4px solid var(--color-error);
  background: var(--color-error-bg);
}

.card-info {
  border-left: 4px solid var(--color-info);
  background: var(--color-info-bg);
}

/* ================================
   FORM COMPONENTS
   ================================ */

/* Form layout */
.form-group {
  margin-bottom: var(--space-4);
}

.form-group-inline {
  display: flex;
  gap: var(--space-3);
  align-items: end;
}

/* Label styles */
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-heading);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.form-label.required::after {
  content: ' *';
  color: var(--color-error);
}

/* Input enhancements */
.form-input,
.form-textarea,
.form-select {
  font-family: var(--font-primary);
  position: relative;
  background: var(--color-surface-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  transition: all var(--transition-fast) var(--transition-ease);
  font-size: var(--font-size-base);
  line-height: var(--line-height-comfortable);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary-6);
  box-shadow: var(--shadow-focus);
  outline: none;
  background: var(--color-surface-secondary);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--color-primary-4);
}

/* Input states */
.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.form-input.success,
.form-textarea.success,
.form-select.success {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}

/* Input sizes */
.form-input-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
}

.form-input-lg {
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-lg);
}

/* Help text */
.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-comfortable);
}

.form-help.error {
  color: var(--color-error);
}

.form-help.success {
  color: var(--color-success);
}

/* Checkbox and radio */
.form-checkbox,
.form-radio {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
}

.form-checkbox input,
.form-radio input {
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary-6);
}

/* Switch component */
.form-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-switch-slider {
  position: relative;
  width: 48px;
  height: 24px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast) var(--transition-ease);
}

.form-switch-slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  left: 2px;
  top: 2px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast) var(--transition-ease);
  box-shadow: var(--shadow-sm);
}

.form-switch input:checked + .form-switch-slider {
  background: var(--color-primary-6);
}

.form-switch input:checked + .form-switch-slider::before {
  transform: translateX(24px);
}

.form-switch input:focus + .form-switch-slider {
  box-shadow: var(--shadow-focus);
}

/* ================================
   ALERT COMPONENTS
   ================================ */

.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-success {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--color-warning);
}

.alert-error {
  background: var(--color-error-bg);
  border-color: var(--color-error-border);
  color: var(--color-error);
}

.alert-info {
  background: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--color-info);
}

.alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.alert-message {
  margin: 0;
}

/* Dismissible alerts */
.alert-dismissible {
  position: relative;
  padding-right: var(--space-10);
}

.alert-dismiss {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: none;
  border: none;
  color: currentColor;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast) var(--transition-ease);
}

.alert-dismiss:hover {
  opacity: 1;
}

/* ================================
   BADGE COMPONENTS
   ================================ */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  border-radius: var(--radius-full);
  white-space: nowrap;
  line-height: 1;
}

.badge-primary {
  background: var(--color-primary-6);
  color: var(--color-surface-primary);
}

.badge-secondary {
  background: var(--color-surface-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.badge-success {
  background: var(--color-success);
  color: white;
}

.badge-warning {
  background: var(--color-warning);
  color: white;
}

.badge-error {
  background: var(--color-error);
  color: white;
}

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

/* ================================
   TOOLTIP COMPONENT
   ================================ */

.tooltip-container {
  position: relative;
  display: inline-block;
}

.tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-neutral-9);
  color: var(--color-surface-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast) var(--transition-ease);
  z-index: var(--z-index-tooltip);
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--color-neutral-9);
}

.tooltip-container:hover .tooltip,
.tooltip-container:focus-within .tooltip {
  opacity: 1;
}

/* ================================
   PROGRESS COMPONENTS
   ================================ */

.progress {
  width: 100%;
  height: 8px;
  background: var(--color-surface-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-6), var(--color-primary-5));
  border-radius: var(--radius-full);
  transition: width var(--transition-medium) var(--transition-ease);
  position: relative;
  overflow: hidden;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Large progress bar */
.progress-lg {
  height: 12px;
}

/* Progress with label */
.progress-labeled {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.progress-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  min-width: 3rem;
  text-align: right;
}

/* ================================
   LOADING COMPONENTS
   ================================ */

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top: 2px solid var(--color-primary-6);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-secondary), var(--color-surface-tertiary), var(--color-surface-secondary));
  background-size: 200% 100%;
  animation: pulse 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-button {
  height: 44px;
  width: 120px;
  border-radius: var(--radius-md);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}