/**
 * BYD Shares and Stocks - Component Styles
 * 
 * Reusable UI components: buttons, cards, forms, badges, etc.
 */

/* ============================================
   1. BUTTONS
   ============================================ */

/* Base button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-primary);
  font-size: var(--text-body);
  font-weight: var(--weight-medium);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}

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

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

.btn-primary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.btn-primary:active {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(0);
}

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

.btn-secondary:hover {
  background-color: rgba(var(--color-primary-rgb), 0.1);
  transform: translateY(-2px);
}

.btn-secondary:active {
  background-color: rgba(var(--color-primary-rgb), 0.15);
  transform: translateY(0);
}

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

.btn-dark:hover {
  background-color: #333333;
  border-color: #333333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .btn-dark {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-medium);
}

[data-theme="dark"] .btn-dark:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-dark);
}

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

.btn-light:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border-medium);
  transform: translateY(-2px);
}

/* Ghost Button - No border */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: transparent;
}

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

/* Button Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-body-sm);
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-body-lg);
  border-radius: var(--radius-xl);
}

/* Full Width Button */
.btn-full {
  width: 100%;
}

/* Icon Button */
.btn-icon {
  padding: var(--space-3);
  width: 44px;
  height: 44px;
}

.btn-icon.btn-sm {
  padding: var(--space-2);
  width: 36px;
  height: 36px;
}

.btn-icon.btn-lg {
  padding: var(--space-4);
  width: 56px;
  height: 56px;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

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

.btn.is-loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

.btn-primary.is-loading::after {
  border-color: var(--color-text-primary);
  border-right-color: transparent;
}

/* Button Group */
.btn-group {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ============================================
   2. CARDS
   ============================================ */

/* Base Card */
.card {
  position: relative;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition-normal);
}

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

.card-body {
  padding: var(--card-padding);
}

.card-body-lg {
  padding: var(--card-padding-lg);
}

/* Bordered Card (no shadow) */
.card-bordered {
  box-shadow: none;
  border: 1px solid var(--color-border-light);
}

.card-bordered:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-gold);
}

/* Feature Card */
.feature-card {
  padding: var(--card-padding-lg);
  text-align: center;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  transition: var(--transition-normal);
}

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

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  background-color: rgba(var(--color-accent-soft-blue-rgb), 0.1);
  border-radius: var(--radius-xl);
  color: var(--color-primary);
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
  transform: scale(1.1);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: var(--text-h5);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.feature-description {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* Stat Card */
.stat-card {
  text-align: center;
  padding: var(--space-6);
}

.stat-value {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--text-display-2);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}

/* Price Card */
.price-card {
  position: relative;
  padding: var(--card-padding-lg);
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border-light);
  text-align: center;
  transition: var(--transition-normal);
}

.price-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-gold);
}

.price-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
}

.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-4);
  background: var(--gradient-gold);
  color: var(--color-text-primary);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
}

.price-name {
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.price-description {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.price-amount {
  margin-bottom: var(--space-6);
}

.price-currency {
  font-size: var(--text-h4);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  vertical-align: top;
}

.price-value {
  font-family: var(--font-primary);
  font-size: var(--text-display-2);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.price-period {
  font-size: var(--text-body);
  color: var(--color-text-muted);
}

.price-features {
  text-align: left;
  margin-bottom: var(--space-6);
}

.price-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.price-feature:last-child {
  border-bottom: none;
}

.price-feature svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* Team Card */
.team-card {
  text-align: center;
  padding: var(--card-padding);
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  transition: var(--transition-normal);
}

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

.team-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  overflow: hidden;
  background-color: var(--color-bg-tertiary);
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-name {
  font-size: var(--text-h5);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.team-role {
  font-size: var(--text-body-sm);
  color: var(--color-primary);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-3);
}

.team-bio {
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

/* ============================================
   3. FORMS
   ============================================ */

/* Form Group */
.form-group {
  margin-bottom: var(--space-5);
}

.form-group:last-child {
  margin-bottom: 0;
}

/* Label */
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
}

.form-label .required {
  color: var(--color-error);
  margin-left: var(--space-1);
}

/* Input */
.form-input {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

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

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

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

/* Textarea */
.form-textarea {
  display: block;
  width: 100%;
  min-height: 120px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  resize: vertical;
  transition: var(--transition-fast);
}

.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

/* Select */
.form-select-wrapper {
  position: relative;
}

.form-select {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  font-size: var(--text-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  appearance: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

.form-select-wrapper::after {
  content: '';
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--color-text-muted);
  pointer-events: none;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.form-check-input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-check-label {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  cursor: pointer;
}

/* Error State */
.form-input.is-error,
.form-textarea.is-error,
.form-select.is-error {
  border-color: var(--color-error);
}

.form-input.is-error:focus,
.form-textarea.is-error:focus,
.form-select.is-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-body-sm);
  color: var(--color-error);
}

/* Form Hint */
.form-hint {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-body-sm);
  color: var(--color-text-muted);
}

/* Form Row (for inline fields) */
.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   4. BADGES & TAGS
   ============================================ */

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.badge-primary {
  background-color: rgba(var(--color-accent-soft-blue-rgb), 0.15);
  color: var(--color-primary);
}

.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);
}

/* Tag */
.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-body-sm);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

/* ============================================
   5. ALERTS
   ============================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
}

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

.alert-content {
  flex: 1;
}

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

.alert-message {
  font-size: var(--text-body-sm);
  margin-bottom: 0;
}

.alert-close {
  flex-shrink: 0;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.5;
  transition: var(--transition-fast);
}

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

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

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

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

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

/* ============================================
   6. TABLES
   ============================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.table th {
  font-weight: var(--weight-semibold);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover {
  background-color: var(--color-bg-secondary);
}

/* ============================================
   7. TOOLTIPS (CSS only)
   ============================================ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-caption);
  color: var(--color-text-inverse);
  background-color: var(--color-text-primary);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   8. SPINNERS
   ============================================ */
.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

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

/* ============================================
   9. SKELETON LOADING
   ============================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 16px;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton-circle {
  border-radius: var(--radius-full);
}

.skeleton-rect {
  border-radius: var(--radius-lg);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */
.scroll-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-text-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-normal);
  z-index: var(--z-tooltip);
  box-shadow: var(--shadow-lg);
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top svg {
  width: 24px;
  height: 24px;
}

/* Dark theme - Gold button */
[data-theme="dark"] .scroll-top {
  background-color: var(--color-primary);
  color: var(--color-text-primary);
}

[data-theme="dark"] .scroll-top:hover {
  background-color: var(--color-primary-light);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .scroll-top {
    bottom: var(--space-6);
    right: var(--space-4);
    width: 44px;
    height: 44px;
  }
}