/**
 * Reusable UI Component Primitives
 * Built for high touch-reliability, zero layout shifts, and mobile performance.
 */

/* ==========================================================================
   1. Button Foundation (Min 44px touch target)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--button-height-default);
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              opacity var(--duration-fast) var(--ease-standard);
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:active:not(:disabled) {
  transform: scale(0.97);
}

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

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-fg);
  box-shadow: 0 2px 8px var(--color-primary-glow);
}

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

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-pressed);
}

.btn-secondary {
  background-color: var(--color-secondary-bg);
  color: var(--color-secondary-fg);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-border-strong);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--color-surface-elevated);
}

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

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

.btn-ghost:active:not(:disabled) {
  background-color: var(--color-surface-muted);
}

.btn-danger {
  background-color: var(--color-error);
  color: #ffffff;
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
}

.btn-danger:active:not(:disabled) {
  background-color: #b91c1c;
}

/* Button Sizes */
.btn-sm {
  min-height: var(--button-height-sm);
  padding: 0 var(--space-3);
  font-size: var(--font-size-body-small);
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* Button Disabled State */
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

/* Button Loading State (Zero Layout Shift) */
.btn.is-loading {
  cursor: wait;
  pointer-events: none;
}

.btn.is-loading .btn-text {
  visibility: hidden;
  opacity: 0;
}

.btn.is-loading .btn-spinner {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   2. IconButton Foundation
   ========================================================================== */

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}

.icon-btn:hover:not(:disabled) {
  background-color: var(--color-surface-muted);
  color: var(--color-text-primary);
}

.icon-btn:active:not(:disabled) {
  transform: scale(0.92);
  background-color: var(--color-surface-elevated);
}

.icon-btn-bordered {
  border-color: var(--color-border);
  background-color: var(--color-surface);
}

/* ==========================================================================
   3. Form & Input Foundation
   ========================================================================== */

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  width: 100%;
}

.form-label {
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.input-container {
  display: flex;
  align-items: center;
  min-height: var(--input-height);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-4);
  gap: var(--space-2);
  transition: border-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.input-container:focus-within {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background-color: var(--color-surface-muted);
}

.input-container.has-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.input-container.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-bg-secondary);
}

.form-input {
  width: 100%;
  color: var(--color-text-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
}

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

.input-prefix,
.input-suffix {
  color: var(--color-text-muted);
  font-size: var(--font-size-body-small);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  user-select: none;
}

.field-helper {
  font-size: var(--font-size-caption);
  color: var(--color-text-muted);
  line-height: var(--line-height-caption);
  margin-top: 2px;
}

.field-error {
  font-size: var(--font-size-caption);
  color: var(--color-error-fg);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}

/* ==========================================================================
   4. AmountInput Visual Foundation (Financial Clear Display)
   ========================================================================== */

.amount-input-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.amount-input-card:focus-within {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.amount-input-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.amount-input-currency {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
}

.amount-input-field {
  width: 100%;
  font-size: var(--font-size-amount-large);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  font-variant-numeric: tabular-nums lining-nums;
  letter-spacing: -0.02em;
}

.amount-input-field::placeholder {
  color: var(--color-text-muted);
  opacity: 0.5;
}

/* Quick Select Amount Chips */
.amount-chips {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: 2px;
  -webkit-overflow-scrolling: touch;
}

.amount-chip {
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: background-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.amount-chip:active {
  transform: scale(0.95);
}

.amount-chip:hover {
  background-color: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

/* ==========================================================================
   5. Card Foundation
   ========================================================================== */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-interactive {
  transition: transform var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}

.card-interactive:active {
  transform: scale(0.985);
  background-color: var(--color-surface-muted);
}

/* Wallet Balance Card (Visual Hero of Home Experience) */
.card-wallet {
  background: linear-gradient(145deg, #162030 0%, #101724 100%);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.card-wallet::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

/* Action Quick Card (e.g. Play, Deposit, Withdraw) */
.card-action {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  transition: background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.card-action:active {
  background-color: var(--color-surface-muted);
  border-color: var(--color-border-strong);
}

/* List Item Card (Transactions / History) */
.card-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

/* ==========================================================================
   6. Status Badges (Strict: Verified, Pending, Rejected only)
   Color is NEVER the sole indicator: uses icon + label + color
   ========================================================================== */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
  white-space: nowrap;
  user-select: none;
}

.status-badge .badge-icon {
  width: 12px;
  height: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Verified */
.status-badge.badge-verified {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-fg);
}

/* Pending (Player-facing representation for pending or review) */
.status-badge.badge-pending {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-fg);
}

/* Rejected */
.status-badge.badge-rejected {
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-fg);
}

/* ==========================================================================
   7. Dividers
   ========================================================================== */

.divider {
  height: 1px;
  background-color: var(--color-border);
  width: 100%;
  margin: var(--space-2) 0;
}

.divider-labeled {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--font-size-caption);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: var(--space-3) 0;
}

.divider-labeled::before,
.divider-labeled::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}

/* ==========================================================================
   8. Loading Indicator & Skeletons
   ========================================================================== */

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

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

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-muted) 0%,
    var(--color-surface-elevated) 50%,
    var(--color-surface-muted) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.6s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

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

/* ==========================================================================
   9. Empty State
   ========================================================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  gap: var(--space-3);
  color: var(--color-text-secondary);
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-surface-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.empty-state-title {
  font-size: var(--font-size-subtitle);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.empty-state-desc {
  font-size: var(--font-size-body-small);
  color: var(--color-text-secondary);
  max-width: 280px;
}

/* ==========================================================================
   10. Inline Alert Component
   ========================================================================== */

.inline-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-body-small);
  line-height: var(--line-height-body-small);
}

.inline-alert-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
}

.inline-alert-content {
  flex: 1;
}

.inline-alert-info {
  background-color: var(--color-info-bg);
  border: 1px solid var(--color-info-border);
  color: var(--color-info-fg);
}

.inline-alert-success {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-fg);
}

.inline-alert-warning {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-fg);
}

.inline-alert-error {
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-fg);
}

/* ==========================================================================
   11. Modal / BottomSheet Foundation
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-backdrop);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.bottom-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-modal);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-5) + var(--safe-area-bottom));
  max-width: var(--max-content-width);
  margin-left: auto;
  margin-right: auto;
  transform: translateY(100%);
  transition: transform var(--duration-normal) var(--ease-decelerate);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bottom-sheet.is-open {
  transform: translateY(0);
}

.bottom-sheet-handle {
  width: 36px;
  height: 4px;
  background-color: var(--color-border-strong);
  border-radius: var(--radius-full);
  margin: 0 auto;
  cursor: grab;
}

.bottom-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bottom-sheet-title {
  font-size: var(--font-size-title);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}