/* MotionCoach Trainer — Redesign v3 */
/* Mobile-first responsive coaching lesson experience */

html {
  min-height: 100%;
  background: var(--mc-bg);
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--mc-bg);
}

.trainer-app-webview {
  --trainer-app-safe-top: min(env(safe-area-inset-top), 44px);
  --trainer-app-safe-bottom: min(env(safe-area-inset-bottom), 28px);
}

/* ─── Trainer Layout Shell ─── */
.trainer-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.trainer-app-webview .trainer-page {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--mc-bg);
}

.trainer-app-webview .trainer-topbar {
  top: 0;
  padding-top: calc(12px + var(--trainer-app-safe-top, 0px));
}

.trainer-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(11, 15, 21, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--mc-border-soft);
}
.trainer-topbar-title {
  font-family: var(--mc-font-head);
  font-size: 15px;
  font-weight: 600;
  color: var(--mc-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.trainer-topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.trainer-body {
  display: flex;
  flex: 1;
  min-width: 0;
}

/* ─── Left Rail (desktop only) ─── */
.trainer-rail {
  display: none;
  flex-direction: column;
  gap: 12px;
  width: 300px;
  min-width: 300px;
  max-width: 300px;
  padding: 16px;
  position: sticky;
  top: 53px;
  height: calc(100vh - 53px);
  height: calc(100dvh - 53px);
  overflow-y: auto;
  border-right: 1px solid var(--mc-border-soft);
  background: var(--mc-surface-1);
}

/* ─── Main Content ─── */
.trainer-main {
  flex: 1;
  min-width: 0;
  padding: 20px 16px 48px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.trainer-lesson-flow {
  width: 100%;
  max-width: 920px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ─── Upload Panel ─── */
.trainer-upload-card {
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius-l);
  background: var(--mc-surface-1);
  overflow: hidden;
  transition: border-color 0.2s;
}
.trainer-upload-card:focus-within {
  border-color: var(--mc-accent-mute);
}
.trainer-upload-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  transition: background 0.15s;
  user-select: none;
}
.trainer-upload-trigger:hover {
  background: var(--mc-surface-2);
}
.trainer-upload-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.trainer-upload-label {
  flex: 1;
  min-width: 0;
}
.trainer-upload-label strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--mc-text);
}
.trainer-upload-label span {
  display: block;
  font-size: 12px;
  color: var(--mc-text-3);
  margin-top: 2px;
}
.trainer-upload-chevron {
  color: var(--mc-text-3);
  font-size: 14px;
  transition: transform 0.2s;
}
.trainer-upload-card[open] .trainer-upload-chevron {
  transform: rotate(180deg);
}
.trainer-upload-body {
  padding: 0 16px 16px;
  display: grid;
  gap: 12px;
}
.trainer-upload-body[hidden] {
  display: none;
}

/* upload form fields */
.trainer-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.trainer-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.trainer-field-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--mc-text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.trainer-field input,
.trainer-field select {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 9px 12px;
  background: var(--mc-surface-2);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius-s);
  color: var(--mc-text);
  font: inherit;
  font-size: 14px;
}
.trainer-field input[type="file"] {
  padding: 8px;
  line-height: 1.35;
  white-space: normal;
}
.trainer-field input[type="file"]::file-selector-button {
  min-height: 32px;
  margin-right: 10px;
  padding: 6px 10px;
  border: 0;
  border-radius: 8px;
  background: rgba(255,255,255,0.12);
  color: var(--mc-text);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.trainer-field input:focus,
.trainer-field select:focus {
  outline: none;
  border-color: var(--mc-accent);
  box-shadow: 0 0 0 2px var(--mc-accent-soft);
}
.trainer-file-note {
  color: var(--mc-text-3);
  font-size: 12px;
  margin-top: -4px;
}
.trainer-upload-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--mc-radius);
  background: var(--mc-accent);
  color: var(--mc-text-inv);
  font-family: var(--mc-font-head);
  font-size: 14px;
  font-weight: 650;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.trainer-upload-body .trainer-upload-submit {
  width: 100%;
}
.trainer-upload-submit:hover:not(:disabled) {
  background: var(--mc-accent-h);
}
.trainer-upload-submit:active:not(:disabled) {
  transform: scale(0.97);
}
.trainer-upload-submit:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* status message */
.trainer-status {
  padding: 10px 12px;
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-2);
  color: var(--mc-text-2);
  font-size: 13px;
  line-height: 1.5;
  transition: background 0.2s, color 0.2s;
}
.trainer-status.error {
  background: var(--mc-red-soft);
  color: var(--mc-red);
}
.trainer-status.active {
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
}
#modelStatusBar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--mc-text-3);
}
#modelStatusBar[hidden] {
  display: none;
}

/* ─── History Panel ─── */
.trainer-history {
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-l);
  background: var(--mc-surface-1);
  overflow: hidden;
}
.trainer-history-current {
  padding: 14px;
  border-bottom: 1px solid var(--mc-border-soft);
  cursor: pointer;
  transition: background 0.15s;
}
.trainer-history-current:hover {
  background: var(--mc-surface-2);
}
.trainer-history-current-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--mc-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.trainer-history-current-meta {
  font-size: 12px;
  color: var(--mc-text-3);
  margin-top: 3px;
}
.trainer-history-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  color: var(--mc-text-3);
  font-size: 13px;
  font-weight: 600;
}
.trainer-history-toggle:hover {
  color: var(--mc-text-2);
}
.trainer-history-list {
  display: none;
  padding: 8px;
  max-height: 280px;
  overflow-y: auto;
}
.trainer-history-list.open {
  display: grid;
  gap: 4px;
}
.trainer-history-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--mc-radius-s);
  cursor: pointer;
  transition: background 0.12s;
}
.trainer-history-item:hover {
  background: var(--mc-surface-2);
}
.trainer-history-item.active {
  background: var(--mc-accent-soft);
  border: 1px solid var(--mc-accent-mute);
}
.trainer-history-item-body {
  flex: 1;
  min-width: 0;
}
.trainer-history-item-title {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.trainer-history-item-sub {
  font-size: 11px;
  color: var(--mc-text-3);
  margin-top: 2px;
}
.trainer-history-progress {
  margin-top: 4px;
  color: var(--mc-amber);
  font-size: 11px;
  font-weight: 750;
}
.trainer-history-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.trainer-history-dot.completed { background: var(--mc-accent); }
.trainer-history-dot.processing { background: var(--mc-amber); animation: mc-pulse 1.5s ease-in-out infinite; }
.trainer-history-dot.failed { background: var(--mc-red); }

/* ─── Lesson Hero ─── */
.lesson-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0 14px;
  border-bottom: 1px solid var(--mc-border-soft);
}
.lesson-overview-main {
  display: grid;
  gap: 8px;
}
.lesson-overview-status {
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 12px;
  font-weight: 800;
}
.lesson-overview h2 {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: 0;
  color: var(--mc-text);
}
.lesson-overview p {
  max-width: 760px;
  margin: 0;
  color: var(--mc-text-2);
  font-size: 16px;
  line-height: 1.55;
}
.lesson-overview-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.lesson-overview-stats span {
  min-height: 58px;
  display: grid;
  align-content: center;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--mc-border-soft);
  border-radius: 8px;
  background: rgba(255,255,255,0.025);
  color: var(--mc-text-3);
  font-size: 12px;
  font-weight: 700;
}
.lesson-overview-stats strong {
  color: var(--mc-text);
  font-size: 22px;
  line-height: 1;
}
.lesson-overview-coverage {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.lesson-overview-coverage span {
  padding: 5px 9px;
  border: 1px solid var(--mc-border-soft);
  border-radius: 999px;
  background: rgba(255,255,255,0.035);
  color: var(--mc-text-2);
  font-size: 12px;
  font-weight: 650;
}
.lesson-hero {
  padding: 16px 0 4px;
}
.lesson-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 12px;
  font-weight: 700;
}
.lesson-hero-title {
  margin: 10px 0 0;
  font-family: var(--mc-font-head);
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--mc-text);
}
.lesson-hero-summary {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mc-text-2);
  max-width: 720px;
}
.lesson-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.lesson-hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--mc-border-soft);
  color: var(--mc-text-2);
  font-size: 11px;
  font-weight: 600;
}

/* ─── Action Navigation ─── */
.lesson-action-nav {
  position: sticky;
  top: 53px;
  z-index: 50;
  padding: 10px 0 12px;
  background: rgba(11, 15, 21, 0.92);
  backdrop-filter: blur(10px);
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  border-bottom: 1px solid var(--mc-border-soft);
}
.lesson-action-nav-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--mc-text-3);
  font-size: 12px;
  font-weight: 800;
}
.lesson-action-nav-head strong {
  color: var(--mc-accent);
  font-size: 13px;
}
.lesson-action-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}
.lesson-action-tabs::-webkit-scrollbar {
  display: none;
}
.lesson-action-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px 8px 8px;
  border-radius: 8px;
  border: 1px solid var(--mc-border);
  background: var(--mc-surface-2);
  color: var(--mc-text-2);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.lesson-action-tab:hover {
  border-color: var(--mc-text-3);
  color: var(--mc-text);
}
.lesson-action-tab.active {
  background: linear-gradient(135deg, rgba(34,201,151,0.18), rgba(83,155,245,0.08));
  border-color: rgba(34,201,151,0.42);
  color: var(--mc-accent);
}
.lesson-action-rank {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.06);
  color: var(--mc-text-2);
  font-size: 12px;
  font-weight: 900;
}
.lesson-action-tab.active .lesson-action-rank {
  background: var(--mc-accent);
  color: var(--mc-text-inv);
}
.lesson-action-name {
  color: inherit;
}
.lesson-action-tab em {
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(34,201,151,0.16);
  color: var(--mc-accent);
  font-style: normal;
  font-size: 11px;
  font-weight: 850;
}
.lesson-action-tab small {
  font-size: 11px;
  color: var(--mc-text-3);
  font-weight: 500;
}
.lesson-action-reason {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lesson-action-tab.active small {
  color: var(--mc-accent);
  opacity: 0.7;
}

/* ─── Diagnosis Cards ─── */
.lesson-diagnosis-section {
  display: grid;
  gap: 20px;
}
.lesson-action-panel {
  display: none;
}
.lesson-action-panel.active {
  display: block;
}
.lesson-diagnosis-header {
  font-family: var(--mc-font-head);
  font-size: 17px;
  font-weight: 600;
  color: var(--mc-text);
}
.lesson-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.lesson-panel-head.compact {
  margin-top: -2px;
}
.lesson-panel-eyebrow {
  color: var(--mc-text-3);
  font-size: 12px;
  font-weight: 700;
}
.lesson-panel-summary {
  color: var(--mc-text-2);
  line-height: 1.45;
  margin: 0 0 12px;
  max-width: 820px;
}
.lesson-panel-priority-reason {
  width: fit-content;
  margin: 0 0 12px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--mc-accent-mute);
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 12px;
  font-weight: 750;
}
.lesson-panel-meta {
  margin-bottom: 16px;
}
.lesson-panel-empty {
  padding: 18px;
  color: var(--mc-text-2);
}
.lesson-session-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 8px;
}
.lesson-session-meta span {
  color: var(--mc-text-3);
  font-size: 12px;
}

.diagnosis-card {
  border: 1px solid var(--mc-border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.025), transparent),
    var(--mc-surface-1);
  overflow: hidden;
  transition: border-color 0.2s;
}
.diagnosis-card:hover {
  border-color: rgba(148, 163, 184, 0.24);
}
.diagnosis-card-head {
  padding: 14px 16px 10px;
  display: grid;
  gap: 7px;
}
.diagnosis-card-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.diagnosis-card-index {
  display: inline-flex;
  width: fit-content;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255,255,255,0.045);
  color: var(--mc-text-2);
  font-size: 12px;
  font-weight: 800;
}
.diagnosis-card-phase {
  display: inline-flex;
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 12px;
  font-weight: 700;
}
.diagnosis-card-title {
  font-family: var(--mc-font-head);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--mc-text);
}
.diagnosis-card-evidence-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mc-text-2);
  margin: 0;
  max-width: 72ch;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.diagnosis-card-pending-evidence {
  width: fit-content;
  margin: 0;
  padding: 6px 9px;
  border-radius: 999px;
  border: 1px dashed var(--mc-border);
  color: var(--mc-text-3);
  font-size: 12px;
}

.diagnosis-card-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 0 16px 16px;
}
.diagnosis-proof {
  border: 1px solid var(--mc-border-soft);
  border-radius: 8px;
  background: rgba(7, 11, 18, 0.45);
  padding: 12px;
  display: grid;
  gap: 10px;
  align-self: start;
}
.diagnosis-proof-label {
  font-size: 12px;
  font-weight: 650;
  color: var(--mc-text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.diagnosis-proof video,
.diagnosis-proof img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--mc-border-soft);
  background: #000;
}
.lesson-frame-player {
  display: grid;
  gap: 8px;
}
.lesson-frame-player img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--mc-border-soft);
  background: #000;
}
.lesson-frame-controls {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
}
.lesson-frame-controls button {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--mc-border-soft);
  border-radius: 8px;
  background: var(--mc-surface-2);
  color: var(--mc-text);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.lesson-frame-controls input {
  width: 100%;
  min-width: 0;
  accent-color: var(--mc-accent);
}
.lesson-frame-controls span {
  min-width: 44px;
  text-align: right;
  color: var(--mc-text-3);
  font-size: 11px;
}
.diagnosis-frame-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(86px, 1fr));
  gap: 6px;
  margin-top: 8px;
}
.diagnosis-frame-details {
  margin-top: 8px;
}
.diagnosis-frame-details summary {
  width: fit-content;
  cursor: pointer;
  padding: 6px 10px;
  border: 1px solid var(--mc-border-soft);
  border-radius: 999px;
  color: var(--mc-text-2);
  font-size: 12px;
  background: var(--mc-surface-2);
  list-style: none;
}
.diagnosis-frame-details summary::-webkit-details-marker {
  display: none;
}
.diagnosis-frame-strip figure {
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--mc-border-soft);
  background: #000;
}
.diagnosis-frame-strip img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 0;
  border-radius: 0;
  max-height: none;
}
.diagnosis-frame-strip figcaption {
  padding: 3px 5px;
  font-size: 10px;
  color: var(--mc-text-3);
  text-align: center;
}

/* Teaching proof section inside diagnosis card */
.diagnosis-teaching {
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 8px;
  background: rgba(14, 165, 233, 0.04);
  padding: 12px;
  display: grid;
  gap: 10px;
  align-self: start;
}
.diagnosis-teaching-label {
  font-size: 12px;
  font-weight: 650;
  color: var(--mc-blue);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.diagnosis-teaching video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid rgba(14, 165, 233, 0.15);
  background: #000;
}
.lesson-range-video {
  display: grid;
  gap: 8px;
}
.lesson-range-video-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.lesson-range-video-controls button {
  min-height: 34px;
  padding: 8px 13px;
  border-radius: 999px;
  border: 1px solid var(--mc-accent-mute);
  background: var(--mc-accent);
  color: #03130e;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}
.lesson-range-video-controls span {
  color: var(--mc-text-3);
  font-size: 12px;
}
.diagnosis-teaching-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--mc-text);
  line-height: 1.35;
}
.diagnosis-teaching-summary {
  margin: 0;
  color: var(--mc-text-2);
  font-size: 13px;
  line-height: 1.45;
}
.lesson-coach-switch {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}
.lesson-coach-button,
.lesson-coach-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  border-radius: 8px;
  border: 1px solid var(--mc-border-soft);
  background: var(--mc-surface-1);
  color: var(--mc-text-2);
  padding: 6px 10px;
}
.lesson-coach-button {
  cursor: pointer;
  flex: 0 0 auto;
  max-width: min(320px, 78vw);
}
.lesson-coach-button.active {
  border-color: rgba(14, 165, 233, 0.52);
  background: rgba(14, 165, 233, 0.1);
  color: var(--mc-text);
}
.lesson-coach-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 12px;
  font-weight: 800;
}
.lesson-coach-text {
  display: grid;
  gap: 1px;
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  min-width: 0;
}
.lesson-coach-text span,
.lesson-coach-text small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lesson-coach-text small {
  color: var(--mc-text-3);
  font-size: 10px;
  font-weight: 600;
}
.lesson-coach-panel {
  display: none;
  gap: 10px;
}
.lesson-coach-panel.active {
  display: grid;
}
.lesson-coach-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.lesson-full-video-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border-radius: 8px;
  border: 1px solid var(--mc-border-soft);
  background: var(--mc-surface-2);
  color: var(--mc-text);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
.lesson-full-video-link:hover {
  border-color: rgba(14, 165, 233, 0.42);
  color: var(--mc-blue);
}
.diagnosis-clip-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.diagnosis-clip-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--mc-surface-2);
  border: 1px solid var(--mc-border-soft);
  color: var(--mc-text-2);
  font-size: 11px;
  font-weight: 650;
}
.diagnosis-teaching-meta {
  font-size: 12px;
  color: var(--mc-text-3);
}
.diagnosis-teaching-meta a {
  color: var(--mc-accent);
}

/* Practice steps inside diagnosis card */
.diagnosis-practice {
  border-left: 2px solid var(--mc-accent);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(34, 201, 151, 0.06);
}
.diagnosis-practice-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--mc-accent);
  margin-bottom: 8px;
}
.diagnosis-practice ul {
  margin: 0;
  padding-left: 18px;
}
.diagnosis-practice li {
  margin: 5px 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mc-text);
}
.lesson-proof-placeholder {
  min-height: 170px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--mc-border-soft);
  border-radius: 8px;
  background: rgba(0,0,0,0.16);
  color: var(--mc-text-3);
  font-size: 13px;
}
.lesson-upload-btn {
  width: fit-content;
  min-height: 34px;
  padding: 8px 13px;
  border-radius: 999px;
  border: 1px solid var(--mc-accent-mute);
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}
.lesson-upload-btn:hover {
  border-color: var(--mc-accent);
  background: rgba(34, 201, 151, 0.16);
}

/* Review method at card bottom */
.diagnosis-card-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--mc-border-soft);
  background: rgba(255,255,255,0.015);
}
.diagnosis-review-label {
  font-size: 11px;
  font-weight: 650;
  color: var(--mc-text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 5px;
}
.diagnosis-review-text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--mc-text-2);
}

/* ─── Strengths Section ─── */
.lesson-capture-advice {
  display: grid;
  gap: 10px;
  border: 1px solid rgba(56, 189, 248, 0.28);
  border-radius: var(--mc-radius-l);
  background: rgba(56, 189, 248, 0.08);
  padding: 14px 16px;
}
.lesson-capture-advice h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: #7dd3fc;
}
.lesson-capture-advice-row {
  display: grid;
  gap: 4px;
}
.lesson-capture-advice-row strong {
  font-size: 13px;
  color: var(--mc-text-1);
}
.lesson-capture-advice-row p {
  margin: 0;
  color: var(--mc-text-2);
  font-size: 13px;
  line-height: 1.55;
}

.lesson-strengths {
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-l);
  background: var(--mc-surface-1);
  overflow: hidden;
}
.lesson-strengths-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.lesson-strengths-toggle:hover {
  background: var(--mc-surface-2);
}
.lesson-strengths-toggle h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--mc-text-2);
  margin: 0;
}
.lesson-strengths-toggle .chevron {
  color: var(--mc-text-3);
  transition: transform 0.2s;
}
.lesson-strengths.open .lesson-strengths-toggle .chevron {
  transform: rotate(180deg);
}
.lesson-strengths-body {
  display: none;
  padding: 0 16px 16px;
}
.lesson-strengths.open .lesson-strengths-body {
  display: grid;
  gap: 8px;
}
.strength-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-2);
}
.strength-item-phase {
  font-size: 11px;
  font-weight: 700;
  color: var(--mc-accent);
  white-space: nowrap;
  padding-top: 2px;
}
.strength-item-text {
  font-size: 14px;
  color: var(--mc-text-2);
  line-height: 1.5;
}

/* ─── Full Video Cards ─── */
.lesson-study-section {
  margin-top: 20px;
  border-radius: var(--mc-radius-l);
  background: var(--mc-surface-1);
  border: 1px solid var(--mc-border-soft);
  overflow: hidden;
}
.lesson-study-label {
  padding: 14px 18px 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--mc-text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.lesson-study-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--mc-border-soft);
}
@media (min-width: 768px) {
  .lesson-study-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.lesson-study-card {
  display: flex;
  flex-direction: column;
  background: var(--mc-surface-1);
}
.lesson-study-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
  border: none;
  border-radius: 0;
}
.lesson-study-card-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.lesson-study-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--mc-text);
  line-height: 1.4;
}
.lesson-study-card-meta {
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--mc-text-3);
}
.lesson-study-card-desc {
  margin: 0;
  font-size: 13px;
  color: var(--mc-text-2);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ─── Lesson Step Markers ─── */
.lesson-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}
.lesson-step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--mc-accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  margin-top: 2px;
}
.lesson-step-content {
  flex: 1;
  min-width: 0;
}
.lesson-step-title {
  font-family: var(--mc-font-head);
  font-size: 16px;
  font-weight: 600;
  color: var(--mc-text);
  margin-bottom: 4px;
}
.lesson-step-subtitle {
  font-size: 13px;
  color: var(--mc-text-3);
  line-height: 1.45;
}

/* ─── Practice Summary ─── */
.lesson-practice-section {
  border-radius: var(--mc-radius-l);
  padding: 16px 18px;
  background:
    linear-gradient(135deg, rgba(34,201,151,0.08), transparent 60%),
    var(--mc-surface-1);
  border: 1px solid rgba(34, 201, 151, 0.15);
  border-left: 3px solid var(--mc-accent);
}
.lesson-practice-title {
  font-family: var(--mc-font-head);
  font-size: 17px;
  font-weight: 600;
  color: var(--mc-accent);
  margin-bottom: 14px;
}
.lesson-practice-list {
  display: grid;
  gap: 12px;
}
.lesson-practice-item {
  display: grid;
  gap: 4px;
}
.lesson-practice-item strong {
  font-size: 15px;
  color: var(--mc-text);
}
.lesson-practice-item p {
  margin: 0;
  font-size: 14px;
  color: var(--mc-text-2);
  line-height: 1.55;
}

/* ─── Next Check ─── */
.lesson-next-check {
  padding: 14px 16px;
  border-radius: var(--mc-radius);
  border: 1px solid var(--mc-border-soft);
  background: var(--mc-surface-2);
}
.lesson-next-check-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--mc-text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.lesson-next-check-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--mc-text);
}
.lesson-next-check-source {
  margin-top: 8px;
  font-size: 12px;
  color: var(--mc-text-3);
}

/* ─── Waiting / Progress State ─── */
.trainer-waiting {
  display: grid;
  gap: 16px;
  padding: 28px 20px;
  border: 1px solid var(--mc-accent-mute);
  border-radius: var(--mc-radius-xl);
  background:
    radial-gradient(ellipse at 30% -20%, rgba(34,201,151,0.14), transparent 50%),
    var(--mc-surface-1);
  text-align: center;
}
.trainer-waiting-title {
  font-family: var(--mc-font-head);
  font-size: 20px;
  font-weight: 600;
}
.trainer-waiting-desc {
  font-size: 14px;
  color: var(--mc-text-2);
  line-height: 1.55;
}
.trainer-waiting-progress {
  display: grid;
  gap: 8px;
  max-width: 320px;
  margin: 0 auto;
  width: 100%;
}
.trainer-waiting-bar {
  height: 6px;
  border-radius: 99px;
  background: var(--mc-surface-3);
  overflow: hidden;
}
.trainer-waiting-bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mc-accent), #6ee7b7);
  transition: width 0.6s ease;
}
.trainer-waiting-label {
  font-size: 12px;
  color: var(--mc-text-3);
}
.trainer-waiting-steps {
  display: grid;
  gap: 10px;
  max-width: 280px;
  margin: 0 auto;
  text-align: left;
}
.trainer-waiting-diagnostics {
  max-width: 420px;
  margin: 0 auto;
  text-align: left;
}
.trainer-waiting-diagnostics summary {
  cursor: pointer;
  color: var(--mc-text-3);
  font-size: 12px;
}
.trainer-waiting-diagnostics-body {
  display: grid;
  gap: 5px;
  margin-top: 8px;
  color: var(--mc-text-3);
  font-size: 12px;
  line-height: 1.45;
}
.trainer-waiting-step {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--mc-text-3);
  font-size: 13px;
  transition: color 0.2s;
}
.trainer-waiting-step.active {
  color: var(--mc-text);
}
.trainer-waiting-step.done {
  color: var(--mc-accent);
}
.trainer-waiting-step-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  transition: all 0.2s;
}
.trainer-waiting-step.active .trainer-waiting-step-dot {
  border-color: var(--mc-accent);
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  box-shadow: 0 0 0 4px var(--mc-accent-soft);
}
.trainer-waiting-step.done .trainer-waiting-step-dot {
  border-color: var(--mc-accent);
  background: var(--mc-accent);
  color: var(--mc-text-inv);
}

/* ─── Empty State ─── */
.trainer-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  text-align: center;
  min-height: 300px;
}
.trainer-empty-icon {
  font-size: 40px;
  opacity: 0.4;
}
.trainer-empty-title {
  font-family: var(--mc-font-head);
  font-size: 18px;
  font-weight: 600;
  color: var(--mc-text-2);
}
.trainer-empty-desc {
  font-size: 14px;
  color: var(--mc-text-3);
  max-width: 320px;
  line-height: 1.55;
}
.trainer-mobile-start {
  display: none;
  width: min(100%, 360px);
  gap: 10px;
}
.trainer-mobile-start-btn {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--mc-border);
  border-radius: 8px;
  background: var(--mc-surface-2);
  color: var(--mc-text);
  font: inherit;
  font-size: 15px;
  font-weight: 750;
  cursor: pointer;
}
.trainer-mobile-start-btn.primary {
  border-color: var(--mc-accent-mute);
  background: var(--mc-accent);
  color: var(--mc-text-inv);
}
.trainer-mobile-shooting-tips {
  display: none;
  width: min(100%, 360px);
  margin: 0;
  padding: 0 0 0 18px;
  color: var(--mc-text-3);
  font-size: 12px;
  line-height: 1.45;
  text-align: left;
}

.trainer-failed-session {
  display: grid;
  gap: 12px;
  padding: 22px 18px;
  border: 1px solid var(--mc-red);
  border-radius: var(--mc-radius-l);
  background: var(--mc-red-soft);
}
.trainer-failed-session h2 {
  margin: 0;
  font-family: var(--mc-font-head);
  font-size: 22px;
}
.trainer-failed-session p {
  margin: 0;
  color: var(--mc-text-2);
  line-height: 1.55;
}
.trainer-failed-stage {
  font-weight: 750;
}
.trainer-failed-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.trainer-failed-diagnostics summary {
  cursor: pointer;
  color: var(--mc-text-2);
  font-size: 13px;
  font-weight: 700;
}
.trainer-failed-diagnostics div {
  display: grid;
  gap: 6px;
  margin-top: 8px;
  color: var(--mc-text-3);
  font-size: 12px;
}

/* ─── Feedback buttons ─── */
.rec-feedback {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  align-items: center;
}
.rec-feedback-label {
  color: var(--mc-text-3);
  font-size: 12px;
  font-weight: 750;
}
.rec-feedback-btn {
  padding: 5px 10px;
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-3);
  border: 1px solid var(--mc-border);
  color: var(--mc-text-3);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.rec-feedback-btn:hover {
  color: var(--mc-text-2);
  border-color: var(--mc-text-3);
}
.rec-feedback-btn.saved {
  border-color: var(--mc-accent-mute);
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
}

/* ─── Mobile Upload Sheet ─── */
.trainer-upload-sheet {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  align-items: flex-end;
  justify-content: center;
}
.trainer-upload-sheet.open {
  display: flex;
}
.trainer-upload-sheet-content {
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--mc-surface-1);
  border-radius: var(--mc-radius-xl) var(--mc-radius-xl) 0 0;
  border: 1px solid var(--mc-border);
  border-bottom: none;
  padding: 20px 16px 32px;
  animation: slideUp 0.25s ease;
}
@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.trainer-upload-sheet-handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--mc-surface-3);
  margin: 0 auto 16px;
  border: 0;
  padding: 0;
}

/* ─── Mobile History Bottom Sheet ─── */
.trainer-history-sheet {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  align-items: flex-end;
}
.trainer-history-sheet.open {
  display: flex;
}
.trainer-history-sheet-content {
  width: 100%;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--mc-surface-1);
  border-radius: var(--mc-radius-xl) var(--mc-radius-xl) 0 0;
  border: 1px solid var(--mc-border);
  border-bottom: none;
  padding: 16px;
  animation: slideUp 0.25s ease;
}

.trainer-app-webview .trainer-upload-card form,
.trainer-app-webview .trainer-upload-sheet form {
  display: none;
}
.trainer-app-webview .trainer-upload-body::after {
  content: "请使用 App 上传入口选择视频。";
  display: block;
  padding: 14px;
  border: 1px solid var(--mc-border-soft);
  border-radius: 8px;
  color: var(--mc-text-2);
  background: var(--mc-surface-2);
  font-size: 13px;
}

.trainer-app-webview .trainer-history-sheet-content {
  padding-bottom: calc(16px + var(--trainer-app-safe-bottom, 0px));
}

/* ─── Responsive ─── */

/* Tablet and up */
@media (min-width: 768px) {
  .trainer-topbar {
    display: none;
  }
  .trainer-rail {
    display: flex;
    top: 0;
    height: 100vh;
    height: 100dvh;
  }
  .trainer-main {
    padding: 24px 28px 48px;
  }
  .trainer-upload-sheet,
  .trainer-history-sheet {
    display: none !important;
  }
  .lesson-overview {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
    align-items: end;
  }
  .lesson-overview-stats {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }
  .lesson-action-nav {
    top: 0;
    margin: 0;
    padding-left: 0;
    padding-right: 0;
  }
}

/* Large desktop */
@media (min-width: 1024px) {
  .trainer-rail {
    width: 320px;
    min-width: 320px;
    max-width: 320px;
    padding: 18px;
  }
  .trainer-main {
    padding: 28px 36px 64px;
  }
  .trainer-lesson-flow {
    max-width: 100%;
  }
  .diagnosis-card-body {
    grid-template-columns: 1fr 1fr;
  }
}

/* Small mobile */
@media (max-width: 479px) {
  .trainer-form-row {
    grid-template-columns: 1fr;
  }
  .diagnosis-frame-strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .lesson-hero-title {
    font-size: 22px;
  }
}

/* ─── Mobile Touch Targets ─── */
@media (max-width: 767px) {
  .trainer-app-webview .trainer-main {
    padding-top: 12px;
  }
  .trainer-main {
    padding-bottom: 96px;
  }
  .trainer-empty {
    min-height: calc(100dvh - 170px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    justify-content: flex-start;
    padding-top: 20px;
  }
  .trainer-app-webview .trainer-empty {
    min-height: auto;
    padding: 36px 20px 84px;
  }
  .trainer-mobile-start {
    display: grid;
  }
  .trainer-mobile-shooting-tips {
    display: grid;
    gap: 4px;
  }
  .advanced-options {
    display: none;
  }
  .trainer-more-actions {
    display: none;
  }
  .trainer-history-sheet {
    display: flex;
    inset: auto 0 0;
    background: transparent;
    backdrop-filter: none;
    pointer-events: none;
  }
  .trainer-history-sheet.open {
    display: flex;
  }
  .trainer-history-sheet-content {
    pointer-events: auto;
    max-height: 72vh;
    border-radius: var(--mc-radius-l) var(--mc-radius-l) 0 0;
    box-shadow: 0 -16px 38px rgba(0,0,0,0.3);
    transform: translateY(0);
    transition: transform 0.2s ease;
  }
  .trainer-history-sheet.collapsed .trainer-history-sheet-content {
    max-height: calc(44px + var(--trainer-app-safe-bottom, 0px));
    overflow: hidden;
    padding: 10px 16px calc(10px + var(--trainer-app-safe-bottom, 0px));
    transform: none;
  }
  .trainer-history-sheet.collapsed .trainer-history-sheet-content > div {
    display: none !important;
  }
  .trainer-history-sheet.collapsed #mobileHistoryList,
  .trainer-history-sheet.collapsed #mobileRefreshBtn {
    display: none;
  }
  .trainer-topbar-actions button {
    min-width: 44px;
    min-height: 44px;
    font-size: 18px;
  }
  .lesson-action-tab {
    padding: 11px 16px;
    font-size: 14px;
  }
  .diagnosis-card-head {
    padding: 16px;
  }
  .diagnosis-card-body {
    padding: 0 16px 16px;
  }
  .diagnosis-card-footer {
    padding: 12px 16px;
  }
  .rec-feedback-btn {
    min-height: 36px;
    padding: 8px 12px;
  }
  .trainer-history-item {
    padding: 12px;
    min-height: 52px;
  }
  .lesson-hero {
    padding: 20px 0 4px;
  }
  .lesson-practice-section {
    padding: 18px;
  }
}

/* ─── Bottom Sheet Swipe Indicator ─── */
.trainer-upload-sheet-content,
.trainer-history-sheet-content {
  touch-action: pan-y;
}
.trainer-upload-sheet-handle {
  cursor: grab;
}

/* ─── Smooth Scrolling ─── */
.trainer-lesson-flow {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  .trainer-lesson-flow {
    scroll-behavior: auto;
  }
  .trainer-waiting-step-dot,
  .trainer-waiting-bar-fill,
  .trainer-upload-chevron {
    transition: none;
  }
}

/* ─── Legacy / Secondary View Compat ─── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-radius: 999px;
  padding: 4px 10px;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.pill.uploaded { background: var(--mc-blue-soft); color: var(--mc-blue); }
.pill.failed { background: var(--mc-red-soft); color: var(--mc-red); }
.muted { color: var(--mc-text-2); font-size: 13px; }
.section-title {
  font-size: 12px;
  color: var(--mc-text-3);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}
.bullet-list { display: grid; gap: 8px; }
.bullet-item {
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius);
  padding: 12px;
  background: var(--mc-surface-2);
}
.bullet-item strong { display: block; margin-bottom: 4px; font-size: 13px; }
.bullet-item p { margin: 0; color: var(--mc-text-2); line-height: 1.55; font-size: 13px; }
.practice-lines { display: grid; gap: 4px; margin-top: 6px; }
.practice-lines span { color: var(--mc-text-2); font-size: 12px; line-height: 1.45; }
.detail-item {
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius);
  padding: 12px;
  background: var(--mc-surface-2);
}
.detail-item .k { display: block; color: var(--mc-text-3); font-size: 11px; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.03em; }
.detail-item .v { font-size: 13px; color: var(--mc-text); }
.phase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.detail-highlight {
  border: 1px solid var(--mc-accent-mute);
  background: var(--mc-accent-soft);
  border-radius: var(--mc-radius-l);
  padding: 18px;
  display: grid;
  gap: 10px;
}
.detail-highlight strong { font-size: 16px; font-family: var(--mc-font-head); }
.detail-highlight p { margin: 0; color: var(--mc-text-2); line-height: 1.55; }
.detail-topline {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}
.next-step {
  border-radius: var(--mc-radius);
  padding: 14px;
  background: var(--mc-surface-2);
  border: 1px solid var(--mc-border);
}
.next-step strong { display: block; margin-bottom: 6px; font-family: var(--mc-font-head); }
.next-step p { margin: 0; color: var(--mc-text-2); line-height: 1.55; }
.inline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.field { display: grid; gap: 6px; }
.label {
  font-size: 11px;
  font-weight: 600;
  color: var(--mc-text-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.trainer-video-wrap { margin-top: 10px; max-width: 420px; }
.trainer-video {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: var(--mc-radius);
  border: 1px solid var(--mc-border);
  background: #000;
}
.lite-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.lite-meta span { color: var(--mc-text-3); font-size: 12px; }
.pair-label { font-size: 13px; color: var(--mc-text-3); margin-bottom: 8px; }
.history-trend-card {
  border-radius: var(--mc-radius);
  padding: 14px;
  background: var(--mc-surface-2);
  border: 1px solid var(--mc-border);
  display: grid;
  gap: 12px;
}
.history-trend-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}
.history-trend-head strong { display: block; margin-bottom: 2px; }
.history-trend-summary { color: var(--mc-accent); font-weight: 700; font-size: 12px; }
.trend-list { display: grid; gap: 6px; }
.trend-row {
  display: grid;
  grid-template-columns: 90px 60px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-1);
}
.trend-row.current {
  border-color: var(--mc-accent-mute);
  background: var(--mc-accent-soft);
}
.trend-date { color: var(--mc-text-3); font-size: 11px; }
.trend-score strong { display: block; font-size: 16px; line-height: 1.1; }
.trend-score span { color: var(--mc-text-3); font-size: 11px; }
.trend-bar-track { height: 5px; border-radius: 99px; background: var(--mc-surface-3); overflow: hidden; margin-bottom: 4px; }
.trend-bar-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--mc-accent), #6ee7b7); }
.trend-finding { color: var(--mc-text-3); font-size: 12px; line-height: 1.4; }
.trainer-sequence-frames {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 8px;
}
.trainer-sequence-frames figure {
  margin: 0;
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-s);
  overflow: hidden;
  background: var(--mc-surface-1);
}
.trainer-sequence-frames img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  background: #000;
}
.trainer-sequence-frames figcaption {
  padding: 4px 6px;
  color: var(--mc-text-3);
  font-size: 11px;
}
.trainer-sequence-frame-player {
  display: block;
}
.trainer-sequence-frame-player .lesson-frame-player img {
  aspect-ratio: 16 / 9;
  object-fit: contain;
}
.trainer-segment-media video,
.trainer-segment-media img {
  width: 100%;
  max-height: 220px;
  object-fit: contain;
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius);
  background: #000;
}
.trainer-action-group-grid { display: grid; gap: 12px; }
.trainer-segment-list { display: grid; gap: 12px; }
.trainer-action-group,
.trainer-segment-card {
  border: 1px solid var(--mc-border);
  background: var(--mc-surface-2);
  border-radius: var(--mc-radius);
  padding: 14px;
  display: grid;
  gap: 12px;
}
.trainer-segment-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}
.trainer-compact-list {
  margin: 6px 0 0;
  padding-left: 18px;
  color: var(--mc-text-2);
}
.trainer-compact-list li { margin: 5px 0; line-height: 1.45; }
.trainer-breakdown-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.trainer-breakdown-grid div,
.trainer-mini-note,
.trainer-skip-row {
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-s);
  padding: 10px;
  background: var(--mc-surface-1);
}
.trainer-breakdown-grid span,
.trainer-skip-row span {
  display: block;
  color: var(--mc-text-3);
  font-size: 11px;
  margin-bottom: 4px;
}
.trainer-skip-list { display: grid; gap: 8px; margin-top: 12px; }
.trainer-issue-note,
.trainer-strength-note { display: grid; gap: 8px; }
.trainer-issue-teaching { display: grid; gap: 8px; margin-top: 2px; padding-top: 8px; border-top: 1px solid var(--mc-border-soft); }
.trainer-issue-teaching-card {
  display: grid; gap: 7px;
  border: 1px solid rgba(14, 165, 233, 0.24);
  border-radius: var(--mc-radius-s);
  padding: 10px; background: var(--mc-surface-2);
}
.trainer-issue-teaching-card strong { font-size: 14px; color: var(--mc-text); }
.trainer-issue-teaching-card p { color: var(--mc-text-2); font-size: 13px; margin: 0; }
.trainer-evidence-frames {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(86px, 1fr));
  gap: 6px;
}
.trainer-evidence-frames figure {
  margin: 0;
  border: 1px solid var(--mc-border-soft);
  border-radius: var(--mc-radius-s);
  overflow: hidden;
  background: var(--mc-surface-2);
}
.trainer-evidence-frames img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; background: #000;
}
.trainer-evidence-frames figcaption { padding: 3px 5px; color: var(--mc-text-3); font-size: 11px; }
.trainer-action-hits { display: grid; gap: 8px; }
.trainer-structure-missing {
  border: 1px solid rgba(245, 158, 11, 0.34);
  background: rgba(245, 158, 11, 0.08);
  border-radius: var(--mc-radius);
  padding: 14px;
  display: grid;
  gap: 12px;
}
.trainer-structure-missing strong { font-family: var(--mc-font-head); }
.trainer-teaching-recs { display: grid; gap: 8px; }
.trainer-teaching-rec {
  border: 1px solid rgba(14, 165, 233, 0.28);
  border-radius: var(--mc-radius-s);
  padding: 10px;
  background: var(--mc-surface-1);
}
.trainer-teaching-rec-supplemental { border-color: var(--mc-border-soft); }
.trainer-teaching-rec strong { display: block; margin-bottom: 4px; font-size: 15px; }
.trainer-rec-title { font-size: 16px; color: var(--mc-text); font-weight: 650; }
.trainer-rec-reason { color: var(--mc-text-2); font-size: 14px; }
.trainer-rec-source {
  width: fit-content;
  display: inline-flex;
  margin-bottom: 4px;
  border-radius: 99px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  background: var(--mc-accent-soft);
  color: var(--mc-accent);
}
.trainer-rec-source.near_micro { background: rgba(245, 158, 11, 0.12); color: #f59e0b; }
.trainer-rec-source.full_action_video { background: var(--mc-surface-3); color: var(--mc-text-2); }
.trainer-teaching-video {
  width: 100%;
  max-height: 220px;
  object-fit: contain;
  margin-top: 8px;
  border-radius: var(--mc-radius-s);
  border: 1px solid var(--mc-border-soft);
  background: #000;
}
.trainer-rec-links a { color: var(--mc-accent); text-decoration: none; }
.trainer-review-method {
  color: var(--mc-text-2);
  font-size: 13px;
  padding: 8px;
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-2);
}
.trainer-practice-steps {
  border-left: 3px solid var(--mc-accent);
  border-radius: var(--mc-radius-s);
  padding: 10px 12px;
  background: rgba(16, 185, 129, 0.08);
}
.trainer-practice-steps strong {
  display: block; margin: 0 0 6px; color: var(--mc-accent); font-size: 13px;
}
.trainer-practice-steps ul { margin: 0; padding-left: 18px; color: var(--mc-text); }
.trainer-practice-steps li { margin: 6px 0; line-height: 1.55; font-size: 14px; }
.trainer-rec-supplement { display: grid; gap: 8px; margin-top: 4px; }
.trainer-mini-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

/* Issue media modal */
.issue-media-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}
.issue-media-dialog {
  width: min(760px, 100%);
  max-height: 92vh;
  overflow: auto;
  border-radius: var(--mc-radius-l);
  border: 1px solid var(--mc-border);
  background: var(--mc-surface-1);
  padding: 16px;
  display: grid;
  gap: 12px;
}
.issue-media-head,
.issue-media-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.issue-media-head strong { font-family: var(--mc-font-head); font-size: 16px; }
.issue-media-body img,
.issue-media-body video {
  width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: var(--mc-radius);
  border: 1px solid var(--mc-border);
  background: #000;
}
.issue-media-meta { color: var(--mc-text-3); font-size: 12px; }
.issue-media-nav button {
  padding: 7px 10px;
  border-radius: var(--mc-radius-s);
  background: var(--mc-surface-3);
  border: 1px solid var(--mc-border);
  color: var(--mc-text);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}

/* Action review / focus review inline forms */
.trainer-lesson-flow input,
.trainer-lesson-flow select {
  padding: 9px 12px;
  background: var(--mc-surface-2);
  border: 1px solid var(--mc-border);
  border-radius: var(--mc-radius-s);
  color: var(--mc-text);
  font: inherit;
  font-size: 14px;
  width: 100%;
}
.trainer-lesson-flow input:focus,
.trainer-lesson-flow select:focus {
  outline: none;
  border-color: var(--mc-accent);
  box-shadow: 0 0 0 2px var(--mc-accent-soft);
}
.trainer-lesson-flow button:not([class]) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: auto;
  padding: 9px 16px;
  border: none;
  border-radius: var(--mc-radius-s);
  background: var(--mc-accent);
  color: var(--mc-text-inv);
  font-family: var(--mc-font-head);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.trainer-lesson-flow button:not([class]):hover:not(:disabled) { background: var(--mc-accent-h); }
.trainer-lesson-flow button:not([class]):disabled { opacity: 0.45; cursor: not-allowed; }
.trainer-lesson-flow video {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: var(--mc-radius);
  border: 1px solid var(--mc-border);
  background: #000;
}

/* Responsive overrides for legacy views */
@media (max-width: 767px) {
  .inline { grid-template-columns: 1fr; }
  .phase-grid { grid-template-columns: 1fr; }
  .trainer-breakdown-grid { grid-template-columns: 1fr; }
  .detail-topline { flex-direction: column; }
  .trend-row { grid-template-columns: 1fr; }
}

/* ─── Misc Utilities ─── */
.trainer-overflow-wrap {
  overflow-wrap: anywhere;
}
.trainer-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}