/* ============================================================
   components.css — UI component styles
   FinDom Financial Management App
   ============================================================ */

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    opacity var(--transition-fast),
    box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

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

/* Primary */
.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.btn-primary:active:not(:disabled) {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
}

/* Secondary */
.btn-secondary {
  background-color: var(--color-surface-2);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-3);
  border-color: var(--color-text-secondary);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--color-surface-1);
}

/* Danger */
.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  border-color: #dc2626;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}

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

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

.btn-ghost:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-text-primary);
}

.btn-ghost:active:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Icon button (44×44 square) */
.btn-icon {
  width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

/* Size modifiers */
.btn-sm {
  min-height: 36px;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn-lg {
  min-height: 52px;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
}

.btn-full {
  width: 100%;
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label,
label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
}

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

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="search"],
input[type="tel"],
input[type="url"],
select,
textarea {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder,
input[type="search"]::placeholder,
input[type="tel"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="password"]:hover,
input[type="number"]:hover,
input[type="date"]:hover,
input[type="search"]:hover,
input[type="tel"]:hover,
input[type="url"]:hover,
select:hover,
textarea:hover {
  border-color: var(--color-text-secondary);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  background-color: var(--color-surface-3);
}

input:disabled,
select:disabled,
textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--color-surface-1);
}

/* Select arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

select option {
  background-color: var(--color-surface-2);
  color: var(--color-text-primary);
}

/* Date input calendar icon */
input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
  cursor: pointer;
}

textarea {
  min-height: 96px;
  resize: vertical;
  line-height: var(--line-height-normal);
}

/* Validation states */
.form-group.is-invalid input,
.form-group.is-invalid select,
.form-group.is-invalid textarea,
input.is-invalid,
select.is-invalid,
textarea.is-invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-group.is-valid input,
.form-group.is-valid select,
.form-group.is-valid textarea,
input.is-valid,
select.is-valid,
textarea.is-valid {
  border-color: var(--color-success);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: calc(var(--space-1) * -1);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: calc(var(--space-1) * -1);
}

/* Input with prefix/suffix */
.input-group {
  display: flex;
  align-items: stretch;
}

.input-group input {
  flex: 1;
  border-radius: 0;
}

.input-group input:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group input:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-prefix,
.input-suffix {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-surface-3);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.input-prefix {
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-suffix {
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
  width: 18px;
  height: 18px;
  min-height: unset;
  accent-color: var(--color-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.checkbox-group,
.radio-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.checkbox-group label,
.radio-group label {
  color: var(--color-text-primary);
  cursor: pointer;
  margin: 0;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.card-header h2,
.card-header h3,
.card-header h4 {
  margin: 0;
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  background-color: rgba(0, 0, 0, 0.1);
}

/* Interactive card */
.card-interactive {
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card-interactive:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.card-interactive:active {
  transform: scale(0.995);
}

/* ── Badges / Pills ─────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
  line-height: 1.4;
}

.badge-success {
  background-color: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.badge-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-neutral {
  background-color: rgba(148, 163, 184, 0.12);
  color: var(--color-text-secondary);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.badge-accent {
  background-color: rgba(59, 130, 246, 0.15);
  color: var(--color-accent);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

/* ── Status Dots ────────────────────────────────────────────── */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.status-green  { background-color: var(--color-success); }
.status-yellow { background-color: var(--color-warning); }
.status-red    { background-color: var(--color-danger); }
.status-blue   { background-color: var(--color-accent); }
.status-gray   { background-color: var(--color-text-secondary); }

/* Pulsing variant */
.status-dot.pulse {
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ── Dividers ───────────────────────────────────────────────── */
.divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin: var(--space-4) 0;
}

.divider-vertical {
  width: 1px;
  height: auto;
  align-self: stretch;
  background-color: var(--color-border);
  margin: 0 var(--space-4);
}

.separator {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
}

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

/* ── Amount Display ─────────────────────────────────────────── */
.amount-positive {
  color: var(--color-income);
  font-weight: var(--font-weight-semibold);
}

.amount-negative {
  color: var(--color-expense);
  font-weight: var(--font-weight-semibold);
}

.amount-neutral {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.amount-large {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
}

.amount-medium {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

/* ── Pocket Color Accents ───────────────────────────────────── */
.pocket-business {
  --pocket-color: var(--color-pocket-business);
  border-left: 3px solid var(--color-pocket-business);
}

.pocket-egor {
  --pocket-color: var(--color-pocket-egor);
  border-left: 3px solid var(--color-pocket-egor);
}

.pocket-nastya {
  --pocket-color: var(--color-pocket-nastya);
  border-left: 3px solid var(--color-pocket-nastya);
}

/* Pocket dot indicator */
.pocket-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.pocket-dot-business { background-color: var(--color-pocket-business); }
.pocket-dot-egor     { background-color: var(--color-pocket-egor); }
.pocket-dot-nastya   { background-color: var(--color-pocket-nastya); }

/* Pocket badge variants */
.badge-pocket-business {
  background-color: rgba(59, 130, 246, 0.15);
  color: var(--color-pocket-business);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.badge-pocket-egor {
  background-color: rgba(168, 85, 247, 0.15);
  color: var(--color-pocket-egor);
  border: 1px solid rgba(168, 85, 247, 0.25);
}

.badge-pocket-nastya {
  background-color: rgba(236, 72, 153, 0.15);
  color: var(--color-pocket-nastya);
  border: 1px solid rgba(236, 72, 153, 0.25);
}

/* ── Toast Notifications ────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
  max-width: 360px;
  width: calc(100vw - var(--space-8));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  pointer-events: all;
  animation: toast-in var(--transition-normal) forwards;
}

.toast.toast-out {
  animation: toast-out var(--transition-normal) forwards;
}

.toast-success { border-left: 3px solid var(--color-success); }
.toast-danger  { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }
.toast-info    { border-left: 3px solid var(--color-accent); }

.toast-message {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
}

.toast-close {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  background: none;
  border: none;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(100%); }
}

/* ── Modal ──────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay);
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: backdrop-in var(--transition-fast) forwards;
}

.modal-backdrop.hidden {
  display: none;
}

.modal {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modal-in var(--transition-normal) forwards;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2,
.modal-header h3 {
  font-size: var(--font-size-lg);
  margin: 0;
}

.modal-close {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  background: none;
  border: none;
}

.modal-close:hover {
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
}

@keyframes backdrop-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.95) translateY(-8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ── Table ──────────────────────────────────────────────────── */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

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

th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

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

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.03);
}

/* ── Empty State ────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  font-size: 2.5rem;
  line-height: 1;
  opacity: 0.4;
}

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

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

/* ── Spinner ────────────────────────────────────────────────── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-top-color: currentColor;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

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

/* ── List Items ─────────────────────────────────────────────── */
.list-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.list-item:last-child {
  border-bottom: none;
}

.list-item:hover {
  background-color: rgba(255, 255, 255, 0.03);
}

.list-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  background-color: var(--color-surface-3);
}

.list-item-content {
  flex: 1;
  min-width: 0;
}

.list-item-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.list-item-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.list-item-value {
  text-align: right;
  flex-shrink: 0;
}

/* ── Stats / Summary Cards ──────────────────────────────────── */
.stat-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.stat-change {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.stat-change.positive { color: var(--color-income); }
.stat-change.negative { color: var(--color-expense); }