/* LearnOptima — Generation Agent Modal (theme-aware, responsive) */

.gen-agent-overlay {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  background: rgba(2, 6, 23, 0.55);
  backdrop-filter: blur(4px);
}

.gen-agent-overlay.is-open {
  display: flex !important;
  opacity: 1 !important;
  visibility: visible !important;
}

/* If legacy templates still attach .modal-overlay, undo its hidden state */
.gen-agent-overlay.modal-overlay.is-open {
  opacity: 1 !important;
  visibility: visible !important;
}

.gen-agent-modal {
  width: min(100%, 520px);
  max-height: min(92vh, 640px);
  display: flex;
  flex-direction: column;
  background: var(--bg-card, #fff);
  color: var(--text-primary, #0f172a);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 1rem;
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.18);
  overflow: hidden;
}

.gen-agent-header {
  flex-shrink: 0;
  padding: 1rem 1.125rem 0.75rem;
  border-bottom: 1px solid var(--border-color, #e2e8f0);
  background: var(--bg-secondary, #f8fafc);
}

.gen-agent-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.gen-agent-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary, #0f172a);
}

.gen-agent-subtitle {
  margin: 0.35rem 0 0;
  font-size: 0.8125rem;
  color: var(--text-secondary, #64748b);
  line-height: 1.45;
}

.gen-agent-close {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 0.5rem;
  background: var(--bg-card, #fff);
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.gen-agent-close:hover {
  color: var(--text-primary, #0f172a);
  border-color: var(--accent-primary, #2563eb);
}

.gen-agent-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.gen-agent-nav-btn {
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--bg-card, #fff);
  color: var(--text-primary, #0f172a);
  border-radius: 0.5rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
  min-width: 2rem;
}

.gen-agent-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.gen-agent-nav-label {
  font-size: 0.8125rem;
  font-weight: 600;
  min-width: 5.5rem;
  text-align: center;
}

.gen-agent-progress-wrap {
  margin-top: 0.75rem;
}

.gen-agent-progress-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--border-color, #e2e8f0);
  overflow: hidden;
}

.gen-agent-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--gradient-primary, linear-gradient(90deg, #2563eb, #dc2626));
  transition: width 0.4s ease;
}

.gen-agent-progress-text {
  margin: 0.5rem 0 0;
  font-size: 0.75rem;
  color: var(--text-secondary, #64748b);
}

.gen-agent-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 0.875rem 1rem 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color, #cbd5e1) transparent;
}

.gen-agent-body::-webkit-scrollbar {
  width: 6px;
}

.gen-agent-body::-webkit-scrollbar-thumb {
  background: var(--border-color, #cbd5e1);
  border-radius: 3px;
}

.gen-agent-log {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.gen-agent-event {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.625rem;
  align-items: start;
  padding: 0.625rem 0.75rem;
  border-radius: 0.625rem;
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--bg-secondary, #f8fafc);
  animation: genAgentFadeIn 0.25s ease;
}

.gen-agent-event.is-active {
  border-color: var(--accent-primary, #2563eb);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-primary, #2563eb) 25%, transparent);
}

.gen-agent-event.is-success {
  border-color: color-mix(in srgb, var(--success-500, #22c55e) 40%, var(--border-color, #e2e8f0));
}

.gen-agent-event.is-error {
  border-color: color-mix(in srgb, var(--error-500, #ef4444) 45%, var(--border-color, #e2e8f0));
}

.gen-agent-event.is-retry {
  border-color: color-mix(in srgb, var(--warning-500, #f59e0b) 50%, var(--border-color, #e2e8f0));
  background: color-mix(in srgb, var(--warning-500, #f59e0b) 6%, var(--bg-secondary, #f8fafc));
}

.gen-agent-event-body {
  min-width: 0;
}

.gen-agent-event-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.gen-agent-phase {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-primary, #2563eb);
}

.gen-agent-event.is-error .gen-agent-phase { color: var(--error-500, #ef4444); }
.gen-agent-event.is-success .gen-agent-phase { color: var(--success-500, #22c55e); }
.gen-agent-event.is-retry .gen-agent-phase { color: var(--warning-600, #d97706); }

.gen-agent-time {
  font-size: 0.625rem;
  color: var(--text-muted, #94a3b8);
  font-variant-numeric: tabular-nums;
}

.gen-agent-detail,
.gen-agent-topic {
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--text-secondary, #64748b);
}

.gen-agent-topic i,
.gen-agent-detail i {
  margin-right: 0.25rem;
  opacity: 0.75;
}

.gen-agent-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.35rem;
}

.gen-agent-chip {
  font-size: 0.625rem;
  padding: 0.125rem 0.4rem;
  border-radius: 999px;
  background: var(--bg-card, #fff);
  border: 1px solid var(--border-color, #e2e8f0);
  color: var(--text-secondary, #64748b);
}

.gen-agent-items-wrap {
  margin-top: 0.45rem;
}

.gen-agent-items-wrap summary {
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary, #0f172a);
  list-style: none;
}

.gen-agent-items-wrap summary::-webkit-details-marker {
  display: none;
}

.gen-agent-items-wrap summary::before {
  content: '\25B6';
  display: inline-block;
  margin-right: 0.4rem;
  font-size: 0.6rem;
  color: var(--text-muted, #94a3b8);
}

.gen-agent-items-wrap[open] summary::before {
  content: '\25BC';
}

.gen-agent-items {
  margin: 0.4rem 0 0;
  padding-left: 1rem;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--text-secondary, #64748b);
  max-height: 16rem;
  overflow-y: auto;
}

.gen-agent-items li {
  margin-bottom: 0.15rem;
}

.gen-agent-items .gen-agent-more {
  list-style: none;
  margin-left: -1rem;
  font-style: italic;
  color: var(--text-muted, #94a3b8);
}

.gen-agent-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary, #64748b);
}

.gen-agent-empty i {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--accent-primary, #2563eb);
  opacity: 0.7;
}

.gen-agent-empty p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.gen-agent-modal {
  width: min(100%, 560px);
  max-height: min(92vh, 680px);
}

.gen-agent-icon {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  background: var(--bg-card, #fff);
  border: 1px solid var(--border-color, #e2e8f0);
  color: var(--accent-primary, #2563eb);
}

.gen-agent-event.is-active .gen-agent-icon {
  color: var(--accent-primary, #2563eb);
}

.gen-agent-event.is-success .gen-agent-icon {
  color: var(--success-500, #22c55e);
}

.gen-agent-event:not(.is-active) .fa-spin {
  animation: none;
}

.gen-agent-event.is-error .gen-agent-icon {
  color: var(--error-500, #ef4444);
}

.gen-agent-msg {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-primary, #0f172a);
}

.gen-agent-meta {
  margin: 0.25rem 0 0;
  font-size: 0.6875rem;
  color: var(--text-muted, #94a3b8);
}

.gen-agent-footer {
  flex-shrink: 0;
  padding: 0.625rem 1rem;
  border-top: 1px solid var(--border-color, #e2e8f0);
  font-size: 0.6875rem;
  color: var(--text-muted, #94a3b8);
  background: var(--bg-secondary, #f8fafc);
}

@keyframes genAgentFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.gen-agent-day-strip {
  margin-top: 0.625rem;
  padding-top: 0.625rem;
  border-top: 1px solid var(--border-subtle, rgba(148, 163, 184, 0.2));
}

.gen-agent-day-strip-label {
  font-size: 0.75rem;
  color: var(--text-muted, #94a3b8);
  margin-bottom: 0.5rem;
}

.gen-agent-day-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  max-height: 4.5rem;
  overflow-y: auto;
}

.gen-agent-day-pill {
  min-width: 1.75rem;
  height: 1.75rem;
  padding: 0 0.35rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-subtle, rgba(148, 163, 184, 0.35));
  background: var(--bg-secondary, rgba(15, 23, 42, 0.4));
  color: var(--text-secondary, #cbd5e1);
  font-size: 0.6875rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.gen-agent-day-pill.is-ready {
  border-color: rgba(34, 197, 94, 0.45);
  background: rgba(34, 197, 94, 0.12);
  color: #86efac;
}

.gen-agent-day-pill.is-active {
  border-color: rgba(59, 130, 246, 0.65);
  background: rgba(59, 130, 246, 0.18);
  color: #93c5fd;
  animation: genAgentDayPulse 1.4s ease-in-out infinite;
}

.gen-agent-day-pill.is-pending {
  opacity: 0.55;
  cursor: not-allowed;
}

.gen-agent-day-pill:disabled {
  cursor: not-allowed;
}

.gen-agent-day-pill.is-selected {
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.35);
}

.gen-agent-day-more {
  align-self: center;
  font-size: 0.6875rem;
  color: var(--text-muted, #94a3b8);
  padding: 0 0.25rem;
}

@keyframes genAgentDayPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

/* Responsive — user breakpoints */
@media (max-width: 600px) {
  .gen-agent-overlay { padding: 0.5rem; }
  .gen-agent-modal { max-height: 94vh; border-radius: 0.875rem; }
  .gen-agent-header { padding: 0.875rem 0.875rem 0.625rem; }
  .gen-agent-title { font-size: 1rem; }
  .gen-agent-body { padding: 0.75rem 0.875rem 0.875rem; }
}

@media (max-width: 480px) {
  .gen-agent-modal { width: 100%; border-radius: 0.75rem; }
  .gen-agent-subtitle { font-size: 0.75rem; }
}

@media (max-width: 430px) {
  .gen-agent-header-top { align-items: center; }
  .gen-agent-nav-label { min-width: 4.75rem; font-size: 0.75rem; }
}

@media (max-width: 400px) {
  .gen-agent-event { padding: 0.5rem 0.625rem; gap: 0.5rem; }
  .gen-agent-msg { font-size: 0.78125rem; }
}

@media (max-width: 380px) {
  .gen-agent-title { font-size: 0.9375rem; }
  .gen-agent-close { width: 1.75rem; height: 1.75rem; }
}

@media (max-width: 340px) {
  .gen-agent-overlay { padding: 0.35rem; }
  .gen-agent-header { padding: 0.75rem 0.75rem 0.5rem; }
  .gen-agent-body { padding: 0.625rem 0.75rem 0.75rem; }
  .gen-agent-footer { padding: 0.5rem 0.75rem; }
}