/**
 * Component Classes - Wheelie Frontend
 *
 * Reusable component patterns aligned with iOS app design system.
 * These classes provide consistent UI components across all pages.
 */

/* ========================================
   CARD COMPONENTS
   Notion-inspired cards matching iOS design
   ======================================== */

.card {
  background-color: var(--card-background);
  border: var(--border-thin) solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-interactive {
  cursor: pointer;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: var(--border-thin) solid var(--border-color);
}

.card-title {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
}

.card-body {
  color: var(--text-primary);
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: var(--border-thin) solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Stats card variant */
.stat-card {
  background-color: var(--card-background);
  border: var(--border-thin) solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
}

.stat-card-label {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-xs);
}

.stat-card-value {
  font-size: var(--font-size-card-value);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  line-height: var(--line-height-tight);
}

.stat-card-change {
  font-size: var(--font-size-caption);
  margin-top: var(--spacing-xs);
}

/* ========================================
   BADGE COMPONENTS
   Status indicators and labels
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  white-space: nowrap;
}

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

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

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

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

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

.badge-neutral {
  background-color: var(--background-secondary);
  color: var(--text-primary);
  border: var(--border-thin) solid var(--border-color);
}

/* Option type badges */
.badge-put {
  background: linear-gradient(135deg, var(--color-profit), var(--emerald-400));
  color: white;
}

.badge-call {
  background: linear-gradient(135deg, var(--color-info), var(--blue-400));
  color: white;
}

/* ========================================
   BUTTON COMPONENTS
   Primary, secondary, and variant buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-system);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary button (brand green) */
.btn-primary {
  background-color: var(--color-primary-green);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px color-mix(in srgb, var(--color-primary-green) 30%, transparent);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: none;
}

/* Secondary button */
.btn-secondary {
  background-color: var(--background-secondary);
  color: var(--text-primary);
  border: var(--border-thin) solid var(--border-color);
}

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

/* Danger button */
.btn-danger {
  background-color: var(--color-loss);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  opacity: 0.9;
}

/* Ghost button (transparent) */
.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
  border: var(--border-thin) solid var(--border-color);
}

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

/* Icon button */
.btn-icon {
  padding: var(--spacing-sm);
  width: 36px;
  height: 36px;
}

/* Button sizes */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-caption);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-body);
}

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

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-body);
  font-family: var(--font-family-system);
  color: var(--text-primary);
  background-color: var(--background-primary);
  border: var(--border-thin) solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-green);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary-green) 10%, transparent);
}

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

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  display: block;
  font-size: var(--font-size-caption);
  color: var(--color-loss);
  margin-top: var(--spacing-xs);
}

.form-help {
  display: block;
  font-size: var(--font-size-caption);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ========================================
   TABLE COMPONENTS
   ======================================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--border-color);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-body);
}

.table thead {
  background-color: var(--background-secondary);
  border-bottom: var(--border-medium) solid var(--border-color);
}

.table th {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.table td {
  padding: var(--spacing-md);
  border-bottom: var(--border-thin) solid var(--border-color);
  color: var(--text-primary);
}

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

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

.table-sortable th {
  cursor: pointer;
  user-select: none;
}

.table-sortable th:hover {
  color: var(--text-primary);
}

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

.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: var(--border-thick) solid;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border-left-color: var(--color-profit);
  color: var(--color-profit);
}

.alert-error {
  background-color: rgba(220, 38, 38, 0.1);
  border-left-color: var(--color-loss);
  color: var(--color-loss);
}

.alert-warning {
  background-color: rgba(217, 119, 6, 0.1);
  border-left-color: var(--color-warning);
  color: var(--color-warning);
}

.alert-info {
  background-color: rgba(37, 99, 235, 0.1);
  border-left-color: var(--color-info);
  color: var(--color-info);
}

.alert-icon {
  flex-shrink: 0;
  width: var(--icon-md);
  height: var(--icon-md);
}

.alert-content {
  flex: 1;
}

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

.alert-message {
  font-size: var(--font-size-body);
  opacity: 0.9;
}

/* ========================================
   LOADING & SKELETON COMPONENTS
   ======================================== */

.spinner {
  display: inline-block;
  width: var(--icon-md);
  height: var(--icon-md);
  border: 2px solid var(--border-color);
  border-top-color: var(--color-primary-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--background-secondary) 0%,
    var(--border-color) 50%,
    var(--background-secondary) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

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

/* ========================================
   MODAL COMPONENTS
   ======================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-backdrop.active {
  opacity: 1;
}

.modal {
  background-color: var(--card-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal-backdrop.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: var(--border-thin) solid var(--border-color);
}

.modal-title {
  font-size: var(--font-size-card-value);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-card-value);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.modal-close:hover {
  background-color: var(--background-secondary);
}

.modal-body {
  margin-bottom: var(--spacing-md);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: var(--border-thin) solid var(--border-color);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }

.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

.transition { transition: all 0.2s ease; }

/* ========================================
   USAGE EXAMPLES
   ======================================== */

/*
  Card:
  <div class="card">
    <div class="card-header">
      <h3 class="card-title">Title</h3>
    </div>
    <div class="card-body">Content</div>
  </div>

  Stats Card:
  <div class="stat-card">
    <div class="stat-card-label">Open Positions</div>
    <div class="stat-card-value">12</div>
  </div>

  Badge:
  <span class="badge badge-profit">+12.5%</span>
  <span class="badge badge-put">PUT</span>

  Button:
  <button class="btn btn-primary">Save</button>
  <button class="btn btn-secondary">Cancel</button>

  Form:
  <div class="form-group">
    <label class="form-label">Symbol</label>
    <input class="form-input" type="text" />
  </div>

  Table:
  <div class="table-container">
    <table class="table">
      <thead><tr><th>Symbol</th></tr></thead>
      <tbody><tr><td>AAPL</td></tr></tbody>
    </table>
  </div>

  Alert:
  <div class="alert alert-success">
    <div class="alert-content">Success message</div>
  </div>
*/