/* ============================================================
   components.css — Buttons, Forms, Badges, Toast, Modal,
                    Cards, Tables, Pagination, Spinner, etc.
   Modern Dark Fintech / Hardware-Crafted UI
   ============================================================ */

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all var(--transition);
  user-select: none;
  text-decoration: none;
  position: relative;
  letter-spacing: -0.01em;
}

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

.btn-primary {
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  border-color: #2563eb;
  color: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22), 0 2px 6px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover:not(:disabled):not(.loading) {
  background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 100%);
  border-color: #3b82f6;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 4px 12px rgba(37, 99, 235, 0.45);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled):not(.loading) {
  transform: translateY(0);
  background: #1d4ed8;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 1px 2px rgba(0, 0, 0, 0.25);
}

.btn-secondary:hover:not(:disabled):not(.loading) {
  background: var(--color-surface-3);
  border-color: var(--color-border-light);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled):not(.loading) {
  transform: translateY(0);
}

.btn-danger {
  background: linear-gradient(180deg, #ef4444 0%, #dc2626 100%);
  border-color: #dc2626;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 2px 6px rgba(220, 38, 38, 0.3);
}

.btn-danger:hover:not(:disabled):not(.loading) {
  background: linear-gradient(180deg, #f87171 0%, #ef4444 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 4px 12px rgba(220, 38, 38, 0.4);
  transform: translateY(-1px);
}

.btn-success {
  background: linear-gradient(180deg, #10b981 0%, #059669 100%);
  border-color: #059669;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 2px 6px rgba(16, 185, 129, 0.3);
}

.btn-success:hover:not(:disabled):not(.loading) {
  background: linear-gradient(180deg, #34d399 0%, #10b981 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 4px 12px rgba(16, 185, 129, 0.4);
  transform: translateY(-1px);
}

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

.btn-ghost:hover:not(:disabled):not(.loading) {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-sm {
  height: 30px;
  padding: 0 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
  gap: 4px;
}

.btn-xs {
  height: 24px;
  padding: 0 8px;
  font-size: 11px;
  border-radius: var(--radius-xs);
  gap: 4px;
}

.btn-full {
  width: 100%;
}

.btn[disabled],
.btn.loading {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(20%);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-icon svg {
  width: 15px;
  height: 15px;
}

.btn-sm .btn-icon svg {
  width: 13px;
  height: 13px;
}

/* ----- Toggle Button (show/hide password) ----- */
.toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.toggle-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-light);
  background: var(--color-surface-3);
}

.toggle-btn svg {
  width: 14px;
  height: 14px;
}

/* ----- Forms ----- */
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.form-label .req {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-control {
  width: 100%;
  background: rgba(14, 18, 27, 0.85);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0 12px;
  font-size: var(--font-size-base);
  height: 38px;
  transition: all var(--transition);
  font-family: var(--font-sans);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4);
}

.form-control::placeholder {
  color: var(--color-text-subtle);
  font-size: 13px;
}

.form-control:focus {
  border-color: var(--color-primary);
  background: rgba(18, 23, 35, 0.95);
  box-shadow: 0 0 0 3px var(--color-primary-glow), inset 0 1px 2px rgba(0, 0, 0, 0.3);
  outline: none;
}

.form-control[readonly] {
  opacity: 0.8;
  cursor: default;
  background: rgba(255, 255, 255, 0.02);
}

.form-control:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: rgba(0, 0, 0, 0.2);
}

textarea.form-control {
  height: auto;
  min-height: 80px;
  resize: vertical;
  padding: 10px 12px;
  line-height: 1.5;
}

.form-select {
  width: 100%;
  background-color: rgba(14, 18, 27, 0.85);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0 32px 0 12px;
  font-size: var(--font-size-base);
  height: 38px;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4);
}

.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow), inset 0 1px 2px rgba(0, 0, 0, 0.3);
  outline: none;
}

.form-select option {
  background: #111520;
  color: var(--color-text);
  padding: 8px;
}

.form-error {
  font-size: 12px;
  color: var(--color-danger);
  margin-top: 4px;
  display: none;
}

.form-group.has-error .form-error {
  display: block;
}

.form-group.has-error .form-control,
.form-group.has-error .form-select {
  border-color: var(--color-danger);
}

.form-group.has-error .form-control:focus,
.form-group.has-error .form-select:focus {
  box-shadow: 0 0 0 3px var(--color-danger-glow);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 5px;
  line-height: 1.4;
}

.input-group {
  display: flex;
  gap: 6px;
  align-items: center;
}

.input-group .form-control {
  flex: 1;
}

.input-group-btn {
  flex-shrink: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-section-title {
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.form-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-lg) 0;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* ----- Badges with Micro-dots ----- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.badge-success {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}
.badge-success::before {
  box-shadow: 0 0 6px rgba(52, 211, 153, 0.6);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.25);
}
.badge-warning::before {
  box-shadow: 0 0 6px rgba(251, 191, 36, 0.6);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}
.badge-danger::before {
  box-shadow: 0 0 6px rgba(248, 113, 113, 0.6);
}

.badge-muted {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.badge-muted::before {
  background: var(--color-text-subtle);
}

.badge-info {
  background: rgba(99, 102, 241, 0.12);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.25);
}
.badge-info::before {
  box-shadow: 0 0 6px rgba(129, 140, 248, 0.6);
}

.badge-primary {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.25);
}
.badge-primary::before {
  box-shadow: 0 0 6px rgba(96, 165, 250, 0.6);
}

/* ----- Toast Stack ----- */
.toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  z-index: 9999;
  max-width: 380px;
  width: calc(100% - 48px);
  pointer-events: none;
}

.toast {
  background: rgba(17, 21, 32, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
  position: relative;
  animation: toastSlideIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: all;
}

@keyframes toastSlideIn {
  from {
    transform: translateY(12px) scale(0.96);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

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

.toast-inner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
}

.toast-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast-icon svg {
  width: 16px;
  height: 16px;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error   .toast-icon { color: var(--color-danger); }
.toast-warning .toast-icon { color: var(--color-warning); }
.toast-info    .toast-icon { color: var(--color-primary); }

.toast-msg {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.45;
}

.toast-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 14px;
  flex-shrink: 0;
  transition: all var(--transition);
}

.toast-close:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: currentColor;
  opacity: 0.5;
  animation: toastShrink 4s linear forwards;
}

.toast-success .toast-progress { color: var(--color-success); }
.toast-error   .toast-progress { color: var(--color-danger); }
.toast-warning .toast-progress { color: var(--color-warning); }
.toast-info    .toast-progress { color: var(--color-primary); }

@keyframes toastShrink {
  from { width: 100%; }
  to   { width: 0; }
}

/* ----- Modal ----- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 5, 8, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), visibility var(--transition);
  padding: var(--spacing-md);
  cursor: pointer;
}

.modal-overlay.show {
  display: flex !important;
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.modal {
  cursor: default;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  width: min(500px, calc(100% - 32px));
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: scale(0.96) translateY(8px);
  transition: transform var(--transition);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-lg {
  width: min(660px, calc(100% - 32px));
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: -0.015em;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 18px;
  transition: all var(--transition);
  flex-shrink: 0;
}

.modal-close svg {
  pointer-events: none;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.modal-body {
  overflow-y: auto;
  padding: 22px;
  flex: 1;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: 14px 22px;
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.15);
}

/* ----- Spinner ----- */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spinnerSpin 0.55s linear infinite;
  flex-shrink: 0;
}

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

/* ----- Empty State ----- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
}

.empty-state-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-subtle);
}

.empty-state-icon svg {
  width: 24px;
  height: 24px;
}

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

.empty-state-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 320px;
  line-height: 1.5;
}

/* ----- Cards ----- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--color-border-light);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  gap: var(--spacing-sm);
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: -0.015em;
}

.card-body {
  padding: 20px;
}

.card-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.15);
}

/* ----- Metric Cards (Dashboard Stats) ----- */
.metric-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

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

.metric-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-primary);
  border: 1px solid rgba(59, 130, 246, 0.2);
  flex-shrink: 0;
}

.metric-icon svg {
  width: 20px;
  height: 20px;
}

.metric-icon.success {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.2);
}

.metric-icon.warning {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.metric-icon.danger {
  background: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.metric-icon.info {
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-info);
  border-color: rgba(99, 102, 241, 0.2);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  letter-spacing: -0.01em;
}

.metric-value {
  font-size: 26px;
  font-weight: var(--font-weight-bold);
  color: #fff;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-feature-settings: 'tnum' on, 'lnum' on;
}

.metric-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
  line-height: 1.4;
}

/* ----- Tables ----- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.table th {
  text-align: left;
  padding: 12px 14px;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}

.table td {
  padding: 12px 14px;
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
  color: var(--color-text);
}

.table tbody tr {
  transition: background var(--transition);
}

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

.table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.025);
}

.table-empty {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.table-actions {
  white-space: nowrap;
}

/* ----- Pagination ----- */
.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.page-btn:hover:not(:disabled) {
  background: var(--color-surface-3);
  color: #fff;
  border-color: var(--color-border-light);
}

.page-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ----- Copy Field ----- */
.copy-field {
  display: flex;
  gap: 8px;
  align-items: center;
}

.copy-input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12.5px;
}

/* ----- Filters ----- */
.filters {
  margin-bottom: var(--spacing-lg);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  align-items: flex-end;
}

.filter-row .form-group {
  margin-bottom: 0;
  min-width: 150px;
}

/* ----- Tag ----- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  white-space: nowrap;
}