/* ============================================================
   COMPONENTS.CSS - Reusable UI Components
   ============================================================ */

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 8px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
  user-select: none;
}

.btn:hover {
  background: var(--border);
  border-color: var(--border-hi);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: var(--accent);
  color: #fff;
}

.btn.primary:hover {
  opacity: 0.88;
}

.btn.success {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--green);
  color: var(--green);
}

.btn.success:hover {
  background: rgba(16, 185, 129, 0.25);
}

.btn.danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--red);
  color: var(--red);
}

.btn.danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn.warning {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--yellow);
  color: var(--yellow);
}

.btn.warning:hover {
  background: rgba(245, 158, 11, 0.25);
}

.btn.info {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.btn.info:hover {
  background: rgba(99, 102, 241, 0.25);
}

.btn.small {
  padding: 4px 8px;
  font-size: 12px;
}

.btn.large {
  padding: 12px 24px;
  font-size: 14px;
}

.btn.block {
  width: 100%;
}

.btn.busy {
  opacity: 0.6;
  pointer-events: none;
}

.btn.icon-only {
  padding: 8px;
  width: 36px;
  height: 36px;
}

/* ========== CARDS ========== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--border-hi);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card.flat {
  border: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card.elevated {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.card-subtitle {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
  margin-top: 4px;
}

.card-body {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.card-footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}

.card-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

/* ========== BADGES ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 4px 12px;
  background: var(--surface2);
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  white-space: nowrap;
}

.badge.primary {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent);
}

.badge.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
}

.badge.danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
}

.badge.warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--yellow);
}

.badge.info {
  background: rgba(99, 102, 241, 0.15);
  color: var(--blue);
}

.badge.outline {
  background: transparent;
  border: 1px solid var(--border);
}

/* ========== STAT CARDS ========== */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
}

.stat-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: var(--spacing-xs);
  word-break: break-word;
}

.stat-value.success {
  color: var(--green);
}

.stat-value.danger {
  color: var(--red);
}

.stat-value.warning {
  color: var(--yellow);
}

.stat-value.info {
  color: var(--accent);
}

.stat-delta {
  font-size: 11px;
  color: var(--muted);
}

.stat-delta.positive {
  color: var(--green);
}

.stat-delta.negative {
  color: var(--red);
}

/* ========== TOGGLE PILL (Kill Switch) ========== */
.toggle-pill {
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: rgba(100, 116, 139, 0.3);
  border: 1px solid rgba(100, 116, 139, 0.5);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  flex-shrink: 0;
}

.toggle-pill::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  top: 2px;
  left: 2px;
  transition: all var(--transition-base);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-pill.on {
  background: var(--green);
  border-color: var(--green);
}

.toggle-pill.on::after {
  left: 22px;
}

.toggle-pill.danger {
  background: var(--red);
  border-color: var(--red);
}

.toggle-pill.danger::after {
  left: 22px;
}

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

/* ========== SELECT / DROPDOWN ========== */
.select-wrapper {
  position: relative;
  display: inline-block;
}

select {
  appearance: none;
  padding-right: 28px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

/* ========== EMPTY STATE ========== */
.empty {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--muted);
}

.empty-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--spacing-sm);
}

.empty-text {
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
}

/* ========== ALERT / MESSAGE ========== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--border);
  margin-bottom: var(--spacing-md);
  background: var(--surface);
}

.alert.success {
  border-left-color: var(--green);
  background: rgba(16, 185, 129, 0.05);
  color: var(--green);
}

.alert.danger {
  border-left-color: var(--red);
  background: rgba(239, 68, 68, 0.05);
  color: var(--red);
}

.alert.warning {
  border-left-color: var(--yellow);
  background: rgba(245, 158, 11, 0.05);
  color: var(--yellow);
}

.alert.info {
  border-left-color: var(--accent);
  background: rgba(99, 102, 241, 0.05);
  color: var(--accent);
}

.alert-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.alert-message {
  font-size: 13px;
}

/* ========== PROGRESS BAR ========== */
.progress {
  background: var(--surface2);
  border-radius: 10px;
  height: 8px;
  overflow: hidden;
  margin: var(--spacing-sm) 0;
}

.progress-bar {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  height: 100%;
  transition: width var(--transition-base);
  border-radius: 10px;
}

.progress.success .progress-bar {
  background: var(--green);
}

.progress.danger .progress-bar {
  background: var(--red);
}

.progress.warning .progress-bar {
  background: var(--yellow);
}

/* ========== LIST ITEMS ========== */
.list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.list-item:hover {
  border-color: var(--border-hi);
  background: var(--surface2);
}

.list-item-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.list-item-content {
  flex: 1;
}

.list-item-title {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.list-item-subtitle {
  font-size: 12px;
  color: var(--muted);
}

.list-item-action {
  flex-shrink: 0;
}

/* ========== SPINNER / LOADING ========== */
.spinner {
  display: inline-block;
  animation: spin 1s linear infinite;
}

/* ========== DIVIDER ========== */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--spacing-md) 0;
}

.divider.vertical {
  width: 1px;
  height: auto;
  margin: 0 var(--spacing-md);
}

/* ========== EXECUTION MODE BANNER ========== */
.mode-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  z-index: 100;
}

.mode-banner.autonomous {
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.15), rgba(245, 158, 11, 0.15));
  color: var(--red);
  border-bottom: 2px solid var(--red);
}

.mode-banner.autonomous .mode-dot {
  width: 8px;
  height: 8px;
  background: var(--red);
  border-radius: 50%;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

.mode-banner.validated {
  background: rgba(245, 158, 11, 0.1);
  color: var(--yellow);
  border-bottom: 2px solid var(--yellow);
}

.mode-banner.disabled {
  background: rgba(100, 116, 139, 0.1);
  color: var(--muted);
  border-bottom: 2px solid var(--border);
}

.mode-banner .mode-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.mode-banner.autonomous .mode-badge {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid var(--red);
}

.mode-banner.validated .mode-badge {
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid var(--yellow);
}

.mode-banner.disabled .mode-badge {
  background: rgba(100, 116, 139, 0.2);
  border: 1px solid var(--muted);
}

.mode-banner .mode-stats {
  margin-left: var(--spacing-md);
  font-size: 12px;
  font-weight: 400;
  opacity: 0.8;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}