/* PFOS Components — UI Building Blocks */

/* ═══════════════════════════════════════════
   Cards
   ═══════════════════════════════════════════ */
.card {
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--neu-flat);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-sm { padding: var(--space-md); }
.card-flush { padding: 0; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}
.card-title {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
}
.card-subtitle {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2xs);
}

/* Stat Card (Dashboard) */
.stat-card {
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--neu-flat);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.stat-card--income::before { background: linear-gradient(90deg, var(--color-income), var(--color-accent-secondary-light)); }
.stat-card--expense::before { background: linear-gradient(90deg, var(--color-expense), var(--color-accent-tertiary)); }
.stat-card--net::before { background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-primary-light)); }
.stat-card--gold::before { background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-gold-light)); }

.stat-label {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-xs);
}
.stat-value {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--color-text-primary);
  line-height: var(--lh-tight);
}
.stat-change {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-top: var(--space-xs);
}
.stat-change--up { color: var(--color-income); background: var(--color-income-bg); }
.stat-change--down { color: var(--color-expense); background: var(--color-expense-bg); }

/* ═══════════════════════════════════════════
   Buttons
   ═══════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:disabled:active { transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-primary-dark));
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(124, 156, 191, 0.3);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(124, 156, 191, 0.4); transform: translateY(-1px); }

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

.btn-outline {
  background: transparent;
  color: var(--color-accent-primary);
  border: 1.5px solid var(--color-accent-primary);
}
.btn-outline:hover { background: rgba(124, 156, 191, 0.08); }

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

.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
}

.btn-income { background: var(--color-income); color: var(--color-text-inverse); }
.btn-expense { background: var(--color-expense); color: var(--color-text-inverse); }

.btn-sm { padding: 6px 12px; font-size: var(--fs-sm); border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 28px; font-size: var(--fs-md); border-radius: var(--radius-lg); }
.btn-full { width: 100%; }
.btn-icon { padding: 10px; border-radius: var(--radius-md); }
.btn-icon-sm { padding: 6px; border-radius: var(--radius-sm); }

/* FAB (Floating Action Button) */
.fab {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 16px);
  right: 50%;
  transform: translateX(50%);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-primary-dark));
  color: var(--color-text-inverse);
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(124, 156, 191, 0.4);
  z-index: var(--z-sticky);
  transition: all var(--duration-normal) var(--ease-spring);
}
.fab:hover { transform: translateX(50%) scale(1.1); box-shadow: 0 6px 24px rgba(124, 156, 191, 0.5); }
.fab:active { transform: translateX(50%) scale(0.95); }

/* ═══════════════════════════════════════════
   Form Controls
   ═══════════════════════════════════════════ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.form-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-tertiary);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--fs-md);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--ease-out);
}
.form-input:focus {
  border-color: var(--color-accent-primary);
  background: var(--color-bg-secondary);
  box-shadow: 0 0 0 3px rgba(124, 156, 191, 0.15);
}
.form-input::placeholder { color: var(--color-text-muted); }

.form-input-lg {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  text-align: center;
  padding: 16px;
}

.form-select {
  width: 100%;
  padding: 12px 16px;
  padding-right: 40px;
  background: var(--color-bg-tertiary);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  color: var(--color-text-primary);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23636E72' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}
.form-select:focus {
  border-color: var(--color-accent-primary);
  background-color: var(--color-bg-secondary);
  box-shadow: 0 0 0 3px rgba(124, 156, 191, 0.15);
}

/* Toggle / Segmented Control */
.segmented {
  display: flex;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
}
.segmented-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  text-align: center;
  transition: all var(--duration-fast) var(--ease-out);
}
.segmented-btn.active {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-weight: var(--fw-semibold);
  box-shadow: var(--shadow-sm);
}
.segmented-btn:hover:not(.active) { color: var(--color-text-primary); }

/* ═══════════════════════════════════════════
   Badge / Chip
   ═══════════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
}
.badge-income { background: var(--color-income-bg); color: var(--color-income); }
.badge-expense { background: var(--color-expense-bg); color: var(--color-expense); }
.badge-transfer { background: var(--color-transfer-bg); color: var(--color-transfer); }
.badge-gold { background: rgba(212, 168, 85, 0.15); color: var(--color-accent-gold); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }

/* Wealth Badge */
.wealth-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(212, 168, 85, 0.08), rgba(212, 168, 85, 0.02));
  border: 1px solid rgba(212, 168, 85, 0.2);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}
.wealth-badge:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(212, 168, 85, 0.15); }

.wealth-badge-icon { font-size: 2rem; line-height: 1; }
.wealth-badge-title {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-accent-gold);
}
.wealth-badge-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

/* ═══════════════════════════════════════════
   Transaction Item
   ═══════════════════════════════════════════ */
.tx-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-out);
  cursor: pointer;
}
.tx-item:hover { background: var(--color-bg-tertiary); }
.tx-item + .tx-item { border-top: 1px solid var(--color-divider); }

.tx-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.tx-icon--income { background: var(--color-income-bg); }
.tx-icon--expense { background: var(--color-expense-bg); }
.tx-icon--transfer { background: var(--color-transfer-bg); }

.tx-info { flex: 1; min-width: 0; }
.tx-category {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--color-text-primary);
}
.tx-note {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tx-amount {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  text-align: right;
  flex-shrink: 0;
}
.tx-amount--income { color: var(--color-income); }
.tx-amount--expense { color: var(--color-expense); }
.tx-amount--transfer { color: var(--color-transfer); }
.tx-date {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-align: right;
  margin-top: 2px;
}

/* ═══════════════════════════════════════════
   Progress Bar
   ═══════════════════════════════════════════ */
.progress {
  width: 100%;
  height: 6px;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-primary-light));
}
.progress-fill--income { background: linear-gradient(90deg, var(--color-income), var(--color-accent-secondary-light)); }
.progress-fill--danger { background: linear-gradient(90deg, var(--color-danger), var(--color-accent-tertiary)); }
.progress-fill--gold { background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-gold-light)); }

.progress-lg { height: 10px; }
.progress-xl { height: 14px; }

/* Progress Ring (for goals) */
.progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.progress-ring svg { transform: rotate(-90deg); }
.progress-ring-text {
  position: absolute;
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-text-primary);
}

/* ═══════════════════════════════════════════
   Modal / Bottom Sheet
   ═══════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-overlay);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal);
}
.modal-overlay.active { opacity: 1; visibility: visible; }

.modal {
  background: var(--glass-bg);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  width: 100%;
  max-width: var(--max-width);
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-lg);
  padding-bottom: calc(var(--space-lg) + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  backdrop-filter: blur(calc(var(--glass-blur) * 1.5));
  -webkit-backdrop-filter: blur(calc(var(--glass-blur) * 1.5));
  border: 1px solid var(--glass-border);
  box-shadow: var(--neu-flat);
  border-bottom: none;
}
.modal-overlay.active .modal { transform: translateY(0); }

.modal-handle {
  width: 36px;
  height: 4px;
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-lg);
}

.modal-title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* Centered modal (for confirmations) */
.modal-center {
  align-items: center;
  padding: var(--space-lg);
}
.modal-center .modal {
  border-radius: var(--radius-xl);
  max-width: 360px;
}

/* ═══════════════════════════════════════════
   Toast / Notification
   ═══════════════════════════════════════════ */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  pointer-events: none;
  max-width: var(--max-width);
  width: calc(100% - var(--space-xl));
}
.toast {
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: toastIn var(--duration-normal) var(--ease-spring);
}
.toast-success { background: var(--color-income); }
.toast-error { background: var(--color-expense); }
.toast-warning { background: var(--color-warning); color: var(--color-text-primary); }

/* ═══════════════════════════════════════════
   Empty State
   ═══════════════════════════════════════════ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
}
.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.6;
}
.empty-state-title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}
.empty-state-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  max-width: 280px;
}

/* ═══════════════════════════════════════════
   Skeleton / Loading
   ═══════════════════════════════════════════ */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-primary) 50%, var(--color-bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-text:last-child { width: 60%; }
.skeleton-circle { border-radius: 50%; }
.skeleton-card { height: 120px; border-radius: var(--radius-lg); }

/* ═══════════════════════════════════════════
   Filter Bar
   ═══════════════════════════════════════════ */
.filter-bar {
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  padding: var(--space-xs) 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }

.filter-chip {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}
.filter-chip:hover { border-color: var(--color-accent-primary); color: var(--color-accent-primary); }
.filter-chip.active {
  background: var(--color-accent-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-accent-primary);
}

/* ═══════════════════════════════════════════
   Account Card
   ═══════════════════════════════════════════ */
.account-card {
  background: var(--glass-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--neu-flat);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}
.account-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

.account-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.account-name {
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
}
.account-type {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  text-transform: capitalize;
}
.account-balance {
  margin-left: auto;
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  text-align: right;
}

/* ═══════════════════════════════════════════
   Search Input
   ═══════════════════════════════════════════ */
.search-input {
  position: relative;
}
.search-input input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  background: var(--color-bg-tertiary);
  border: 1.5px solid transparent;
  border-radius: var(--radius-full);
  font-size: var(--fs-base);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--ease-out);
}
.search-input input:focus {
  border-color: var(--color-accent-primary);
  background: var(--color-bg-secondary);
  box-shadow: 0 0 0 3px rgba(124, 156, 191, 0.15);
}
.search-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ═══════════════════════════════════════════
   Date Group Header
   ═══════════════════════════════════════════ */
.date-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  margin-top: var(--space-sm);
}
.date-group-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-secondary);
}
.date-group-total {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}