/**
 * FUNDR Component Library
 * Reusable UI components with consistent styling
 */

/* ============================================================
 * BUTTONS
 * ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-interactive-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-interactive-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-interactive-primary-hover);
  border-color: var(--color-interactive-primary-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  background-color: var(--color-interactive-primary-active);
  border-color: var(--color-interactive-primary-active);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border-color: var(--color-border-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

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

.btn-danger {
  background-color: var(--danger-500);
  color: var(--color-text-inverse);
  border-color: var(--danger-500);
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
  background-color: var(--danger-600);
  border-color: var(--danger-600);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-success {
  background-color: var(--success-500);
  color: var(--color-text-inverse);
  border-color: var(--success-500);
  box-shadow: var(--shadow-sm);
}

.btn-success:hover {
  background-color: var(--success-600);
  border-color: var(--success-600);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Button Sizes */
.btn-xs {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn-xl {
  padding: var(--spacing-xl) var(--spacing-3xl);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

/* Button States */
.btn-loading {
  color: transparent;
}

.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: btn-loading-spin 1s linear infinite;
}

@keyframes btn-loading-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ============================================================
 * CARDS
 * ============================================================ */

.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.card-header {
  padding: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-primary);
}

.card-body {
  padding: var(--spacing-2xl);
}

.card-footer {
  padding: var(--spacing-2xl);
  border-top: 1px solid var(--color-border-primary);
  background-color: var(--color-bg-tertiary);
}

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

.card-interactive {
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.card-success {
  border-color: var(--success-500);
  background: linear-gradient(to right, var(--success-50), var(--color-bg-secondary));
}

.card-danger {
  border-color: var(--danger-500);
  background: linear-gradient(to right, var(--danger-50), var(--color-bg-secondary));
}

.card-warning {
  border-color: var(--warning-500);
  background: linear-gradient(to right, var(--warning-50), var(--color-bg-secondary));
}

/* ============================================================
 * FORMS
 * ============================================================ */

.form-group {
  margin-bottom: var(--spacing-2xl);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form-label.required::after {
  content: ' *';
  color: var(--danger-500);
}

.form-input {
  display: block;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--text-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  appearance: none;
}

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

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--brand-primary-100);
}

.form-input:disabled {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Input States */
.form-input.is-valid {
  border-color: var(--success-500);
}

.form-input.is-invalid {
  border-color: var(--danger-500);
}

.form-input.is-invalid:focus {
  box-shadow: 0 0 0 3px var(--danger-100);
}

/* Form Textarea */
.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* Form Select */
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-md) center;
  background-repeat: no-repeat;
  background-size: 16px 12px;
  padding-right: var(--spacing-4xl);
}

/* Form Checkbox & Radio */
.form-checkbox,
.form-radio {
  width: 18px;
  height: 18px;
  color: var(--color-interactive-primary);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-sm);
  margin-right: var(--spacing-md);
}

.form-radio {
  border-radius: 50%;
}

.form-checkbox:checked,
.form-radio:checked {
  background-color: var(--color-interactive-primary);
  border-color: var(--color-interactive-primary);
}

/* Form Help Text */
.form-help {
  margin-top: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.form-error {
  margin-top: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--danger-600);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-success {
  margin-top: var(--spacing-sm);
  font-size: var(--text-sm);
  color: var(--success-600);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ============================================================
 * NAVIGATION
 * ============================================================ */

.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-lg);
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  text-decoration: none;
}

.nav-link.is-active {
  color: var(--color-interactive-primary);
  background-color: var(--brand-primary-50);
}

/* Top Navigation */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-2xl);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-primary);
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  backdrop-filter: blur(8px);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.topbar-brand:hover {
  text-decoration: none;
  color: var(--color-interactive-primary);
}

.topbar-nav {
  display: none;
}

@media (min-width: 768px) {
  .topbar-nav {
    display: flex;
  }
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Sidebar Navigation */
.sidebar {
  width: 280px;
  background-color: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border-primary);
  height: 100vh;
  position: fixed;
  top: 0;
  left: -280px;
  transition: left var(--transition-normal);
  z-index: var(--z-index-fixed);
  overflow-y: auto;
}

.sidebar.is-open {
  left: 0;
}

@media (min-width: 1024px) {
  .sidebar {
    position: static;
    left: 0;
    height: calc(100vh - 73px); /* Adjust based on topbar height */
  }
}

.sidebar-header {
  padding: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-primary);
}

.sidebar-nav {
  padding: var(--spacing-lg);
}

.sidebar-nav .nav-list {
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-nav .nav-link {
  width: 100%;
  justify-content: flex-start;
  padding: var(--spacing-md) var(--spacing-lg);
}

/* ============================================================
 * DATA DISPLAY
 * ============================================================ */

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table th,
.table td {
  padding: var(--spacing-lg) var(--spacing-2xl);
  text-align: left;
  border-bottom: 1px solid var(--color-border-primary);
}

.table th {
  background-color: var(--color-bg-tertiary);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

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

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

/* Responsive Table */
@media (max-width: 768px) {
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .table-responsive .table {
    min-width: 600px;
  }
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--brand-primary-100);
  color: var(--brand-primary-700);
}

.badge-success {
  background-color: var(--success-100);
  color: var(--success-700);
}

.badge-danger {
  background-color: var(--danger-100);
  color: var(--danger-700);
}

.badge-warning {
  background-color: var(--warning-100);
  color: var(--warning-700);
}

.badge-info {
  background-color: var(--info-100);
  color: var(--info-700);
}

.badge-gray {
  background-color: var(--gray-100);
  color: var(--gray-700);
}

/* Trading-specific badges */
.badge-long {
  background-color: var(--success-100);
  color: var(--success-700);
}

.badge-short {
  background-color: var(--danger-100);
  color: var(--danger-700);
}

.badge-profit {
  background-color: var(--success-100);
  color: var(--success-700);
}

.badge-loss {
  background-color: var(--danger-100);
  color: var(--danger-700);
}

/* ============================================================
 * FEEDBACK COMPONENTS
 * ============================================================ */

/* Alerts */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  margin-bottom: var(--spacing-2xl);
}

.alert-success {
  background-color: var(--success-50);
  border-color: var(--success-200);
  color: var(--success-800);
}

.alert-danger {
  background-color: var(--danger-50);
  border-color: var(--danger-200);
  color: var(--danger-800);
}

.alert-warning {
  background-color: var(--warning-50);
  border-color: var(--warning-200);
  color: var(--warning-800);
}

.alert-info {
  background-color: var(--info-50);
  border-color: var(--info-200);
  color: var(--info-800);
}

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

.alert-description {
  font-size: var(--text-sm);
  line-height: var(--line-height-relaxed);
}

/* Loading States */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border-primary);
  border-top: 2px solid var(--color-interactive-primary);
  border-radius: 50%;
  animation: loading-spin 1s linear infinite;
}

@keyframes loading-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

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

.loading-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

/* Progress Bars */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-interactive-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-bar.is-success {
  background-color: var(--success-500);
}

.progress-bar.is-danger {
  background-color: var(--danger-500);
}

.progress-bar.is-warning {
  background-color: var(--warning-500);
}

/* ============================================================
 * LAYOUT COMPONENTS
 * ============================================================ */

/* Main Layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  flex: none;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.app-content {
  flex: 1;
  padding: var(--spacing-3xl);
  background-color: var(--color-bg-primary);
  overflow-y: auto;
}

@media (max-width: 1024px) {
  .app-content {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }
}

/* Page Headers */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-primary);
}

.page-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.page-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin: var(--spacing-sm) 0 0 0;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 768px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-lg);
  }
  
  .page-actions {
    width: 100%;
    justify-content: flex-start;
  }
  
  .btn {
    flex: 1;
  }
}