/* Component Styles for Merchant Aid Design System */

/* ==========================================================================
   1. Base Resets & Layout Utilities
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ==========================================================================
   2. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
}

h1 { font-size: var(--fs-4xl); margin-bottom: var(--space-md); }
h2 { font-size: var(--fs-3xl); margin-bottom: var(--space-md); }
h3 { font-size: var(--fs-2xl); margin-bottom: var(--space-xs); }
h4 { font-size: var(--fs-xl); margin-bottom: var(--space-xs); }

p {
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-md);
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: var(--fw-medium);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--brand-secondary);
}

.text-mono {
  font-family: SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.9em;
}

/* ==========================================================================
   3. Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  user-select: none;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: var(--fs-md);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--fs-xs);
  border-radius: var(--radius-sm);
}

/* Primary Button */
.btn-primary {
  background-color: var(--brand-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--brand-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--brand-secondary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--brand-secondary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-outline:hover:not(:disabled) {
  background-color: var(--brand-primary-light);
  transform: translateY(-1px);
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Disabled State */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none !important;
  transform: none !important;
}

/* Loading state spinner */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: calc(50% - 8px);
  left: calc(50% - 8px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: currentColor;
  animation: spin 0.8s linear infinite;
}

.btn-outline.btn-loading::after,
.btn-ghost.btn-loading::after {
  border: 2px solid rgba(var(--brand-primary-rgb), 0.2);
  border-top-color: var(--brand-primary);
}

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

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

.form-label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xs);
}

.form-input {
  width: 100%;
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:hover {
  border-color: var(--border-color-hover);
}

.form-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(var(--brand-primary-rgb), 0.15);
}

.form-input:disabled {
  background-color: var(--bg-secondary);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

/* Custom Checkbox */
.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: var(--space-lg);
  cursor: pointer;
  user-select: none;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 1px;
  left: 0;
  height: 18px;
  width: 18px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.checkbox-container:hover input ~ .checkmark {
  border-color: var(--border-color-hover);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.checkmark::after {
  content: "";
  position: absolute;
  display: none;
  left: 6px;
  top: 2px;
  width: 4px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-container input:checked ~ .checkmark::after {
  display: block;
}

/* Custom Switch Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: .4s;
  border-radius: var(--radius-full);
}

.slider::before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border-radius: 50%;
}

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

.switch input:checked + .slider::before {
  transform: translateX(20px);
  background-color: #ffffff;
}

/* ==========================================================================
   5. Cards & Containers
   ========================================================================== */
.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color-hover);
}

/* Glassmorphism Card */
.card-glass {
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
}

.card-title {
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.card-meta {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

/* ==========================================================================
   6. Badges & Tags
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  line-height: var(--lh-none);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-success { background-color: var(--color-success-light); color: var(--color-success); }
.badge-warning { background-color: var(--color-warning-light); color: var(--color-warning); }
.badge-error { background-color: var(--color-error-light); color: var(--color-error); }
.badge-info { background-color: var(--color-info-light); color: var(--color-info); }
.badge-primary { background-color: var(--brand-primary-light); color: var(--brand-primary); }

/* ==========================================================================
   7. Navigation
   ========================================================================== */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.tab-btn {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  background: none;
  border: none;
  padding: var(--space-xs) 0;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--brand-primary);
  font-weight: var(--fw-semibold);
}

.tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--brand-primary);
  border-radius: var(--radius-full);
}

/* ==========================================================================
   8. Feedback (Alerts, Modals, Toasts)
   ========================================================================== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: 1rem;
  border-radius: var(--radius-md);
  border-left: 4px solid transparent;
  margin-bottom: var(--space-md);
}

.alert-success { background-color: var(--color-success-light); border-left-color: var(--color-success); color: var(--text-primary); }
.alert-warning { background-color: var(--color-warning-light); border-left-color: var(--color-warning); color: var(--text-primary); }
.alert-error { background-color: var(--color-error-light); border-left-color: var(--color-error); color: var(--text-primary); }
.alert-info { background-color: var(--color-info-light); border-left-color: var(--color-info); color: var(--text-primary); }

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-xl);
  transform: translateY(24px);
  transition: transform var(--transition-spring), background-color var(--transition-normal);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--fs-2xl);
  cursor: pointer;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  line-height: var(--lh-none);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  margin-bottom: var(--space-lg);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
}

/* Toast container and toasts */
#toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  z-index: 1050;
  pointer-events: none;
}

.toast {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--brand-primary);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1.25rem;
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  pointer-events: auto;
  transform: translateX(120%);
  transition: transform var(--transition-spring), opacity var(--transition-normal);
  opacity: 0;
}

.toast.active {
  transform: translateX(0);
  opacity: 1;
}

.toast.toast-success { border-left-color: var(--color-success); }
.toast.toast-error { border-left-color: var(--color-error); }