/* ── Model estimation progress overlay ────────────────────────────
   Usage:  var p = ModelProgress.start({ title: 'Estimating…', phases: [...] });
   See:    shared/js/model_progress.js

   Layering note — established MktPraxis z-index ladder:
     admin nav 1000-1200 · Professor Mode / codegen 10000 · dialog 98000
     badge notification 98500 · toast 99000 · engagement guard 99998
   This overlay sits at 97900: above Professor Mode, below dialogs & toasts.
   ──────────────────────────────────────────────────────────────── */

.model-progress {
  --mp-backdrop: rgba(15, 23, 42, 0.72);
  --mp-card-bg: #ffffff;
  --mp-accent: #2563eb;
  --mp-track: #e5e7eb;
  --mp-text: var(--app-text, #1f2a37);
  --mp-muted: #6b7280;
  --mp-done: #17915e;

  position: fixed;
  inset: 0;
  background: var(--mp-backdrop);
  z-index: 97900;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.model-progress[aria-hidden="false"] {
  display: flex;
}

body.model-progress-open {
  overflow: hidden;
}

/* ── Card ─────────────────────────────────────────────────────── */

.model-progress__card {
  background: var(--mp-card-bg);
  border-radius: 12px;
  padding: 2.25rem 2.5rem;
  width: min(500px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  outline: none;
}

/* ── Spinner ──────────────────────────────────────────────────── */

.model-progress__spinner {
  width: 60px;
  height: 60px;
  border: 6px solid #f3f3f3;
  border-top-color: var(--mp-accent);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  animation: model-progress-spin 1s linear infinite;
}

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

/* ── Text ─────────────────────────────────────────────────────── */

.model-progress__title {
  margin: 0 0 0.75rem;
  color: var(--mp-text);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
}

.model-progress__status {
  margin: 0.5rem 0;
  color: #374151;
  font-size: 1rem;
  font-weight: 600;
  min-height: 1.2em;
}

.model-progress__sublabel {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: var(--mp-muted);
  min-height: 1em;
}

.model-progress__sublabel:empty {
  display: none;
}

.model-progress__detail {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: #777;
  line-height: 1.5;
}

.model-progress__detail:empty {
  display: none;
}

.model-progress__eta,
.model-progress__elapsed {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--mp-muted);
}

.model-progress__eta:empty,
.model-progress__elapsed:empty {
  display: none;
}

/* ── Progress bar ─────────────────────────────────────────────── */

.model-progress__bar {
  margin-top: 0.75rem;
  height: 10px;
  background: var(--mp-track);
  border-radius: 5px;
  overflow: hidden;
}

.model-progress__bar[hidden] {
  display: none;
}

.model-progress__bar-fill {
  height: 100%;
  width: 0;
  background: var(--mp-accent);
  border-radius: 5px;
  transition: width 0.15s ease;
}

.model-progress__bar--indeterminate .model-progress__bar-fill {
  width: 40%;
  transition: none;
  animation: model-progress-slide 1.3s ease-in-out infinite;
}

@keyframes model-progress-slide {
  0%   { transform: translateX(-110%); }
  100% { transform: translateX(260%); }
}

/* ── Phase checklist ──────────────────────────────────────────── */

.model-progress__phases {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  text-align: left;
  display: inline-block;
}

.model-progress__phases:empty {
  display: none;
}

.model-progress__phase {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.22rem 0;
  font-size: 0.9rem;
  color: #9aa4b2;
  transition: color 0.2s ease;
}

.model-progress__phase-marker {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #d6dfea;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  line-height: 1;
  color: transparent;
}

.model-progress__phase.is-active {
  color: var(--mp-text);
  font-weight: 600;
}

.model-progress__phase.is-active .model-progress__phase-marker {
  border-color: var(--mp-accent);
  border-top-color: transparent;
  animation: model-progress-spin 0.9s linear infinite;
}

.model-progress__phase.is-done {
  color: var(--mp-muted);
}

.model-progress__phase.is-done .model-progress__phase-marker {
  background: var(--mp-done);
  border-color: var(--mp-done);
  color: #fff;
}

/* ── Stats row ────────────────────────────────────────────────── */

.model-progress__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-around;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
  font-size: 0.9rem;
  color: #666;
}

.model-progress__stats:empty {
  display: none;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.model-progress__stat strong {
  color: var(--mp-accent);
  font-size: 1.1rem;
  margin-left: 0.35rem;
}

/* ── Cancel ───────────────────────────────────────────────────── */

.model-progress__actions {
  margin-top: 1.5rem;
}

.model-progress__actions[hidden] {
  display: none;
}

.model-progress__cancel {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.5rem 1.4rem;
  border-radius: 6px;
  border: 1.5px solid var(--app-border, #d6dfea);
  background: #fff;
  color: #4b5563;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.model-progress__cancel:hover:not(:disabled) {
  background: #f7f9fc;
  border-color: #9aa4b2;
}

.model-progress__cancel:disabled {
  opacity: 0.6;
  cursor: default;
}

.model-progress__cancel:focus-visible {
  outline: 3px solid var(--mp-accent);
  outline-offset: 2px;
}

/* ── Narrow viewports ─────────────────────────────────────────── */

@media (max-width: 480px) {
  .model-progress__card {
    padding: 1.75rem 1.25rem;
  }

  .model-progress__title {
    font-size: 1.25rem;
  }

  .model-progress__stats {
    justify-content: flex-start;
  }
}

/* ── Reduced motion ───────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .model-progress__spinner,
  .model-progress__phase.is-active .model-progress__phase-marker {
    animation: none;
    border-top-color: var(--mp-accent);
  }

  .model-progress__bar-fill {
    transition: none;
  }

  .model-progress__bar--indeterminate .model-progress__bar-fill {
    width: 100%;
    animation: none;
    opacity: 0.55;
  }
}