/* Motion Analysis - Redesigned */
#page-motion {
  --m-bg: #f5f7fa;
  --m-card: #ffffff;
  --m-border: #e5e7eb;
  --m-primary: #0876d8;
  --m-primary-dark: #082453;
  --m-accent: #22c9d6;
  --m-text: #1f2937;
  --m-muted: #6b7280;
  --m-danger: #ef4444;
  --m-success: #10b981;
  --m-radius: 12px;
  --m-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --m-shadow-lg: 0 4px 12px rgba(0,0,0,0.08);

  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--m-text);
  background: var(--m-bg);
  padding: 0;
  overflow-y: auto;
  height: 100%;
}

/* Header */
#page-motion .motion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--m-card);
  border-bottom: 1px solid var(--m-border);
}

#page-motion .motion-header .title-group h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 2px;
  color: var(--m-primary-dark);
}

#page-motion .motion-header .title-group p {
  font-size: 13px;
  color: var(--m-muted);
  margin: 0;
}

.motion-status-pills {
  display: flex;
  gap: 12px;
}

.motion-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--m-bg);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--m-muted);
}

.motion-pill strong {
  color: var(--m-primary);
  font-variant-numeric: tabular-nums;
}

/* Main grid */
.motion-main {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
  padding: 20px 24px;
  height: calc(100vh - 70px);
  overflow: hidden;
}

/* Video section */
.video-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0;
}

.video-card {
  flex: 1;
  background: var(--m-card);
  border-radius: var(--m-radius);
  box-shadow: var(--m-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

.video-viewport {
  flex: 1;
  background: #0a1628;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.video-viewport video {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

.video-viewport canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.video-empty {
  text-align: center;
  color: rgba(255,255,255,0.4);
  padding: 40px;
}

.video-empty svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}

.video-empty h3 {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  margin: 0 0 6px;
}

.video-empty p {
  font-size: 13px;
  margin: 0;
}

/* Control bar */
.control-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--m-card);
  border-top: 1px solid var(--m-border);
  flex-wrap: wrap;
}

.control-bar .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 36px;
}

.control-bar .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.control-bar .btn-primary {
  background: var(--m-primary);
  color: #fff;
}

.control-bar .btn-primary:hover:not(:disabled) {
  background: var(--m-primary-dark);
}

.control-bar .btn-ghost {
  background: var(--m-bg);
  color: var(--m-text);
}

.control-bar .btn-ghost:hover:not(:disabled) {
  background: var(--m-border);
}

.control-bar .file-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--m-bg);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--m-text);
  cursor: pointer;
  transition: background 0.15s;
}

.control-bar .file-label:hover {
  background: var(--m-border);
}

.control-bar .file-label input {
  display: none;
}

.control-bar .slider-group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-size: 12px;
  color: var(--m-muted);
}

.control-bar .slider-group input[type="range"] {
  width: 90px;
  height: 4px;
  accent-color: var(--m-primary);
}

/* Motion analysis side panel; scoped name avoids overriding the app navigation. */
.motion-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
  padding-right: 4px;
}

.card {
  background: var(--m-card);
  border-radius: var(--m-radius);
  box-shadow: var(--m-shadow);
  padding: 16px;
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--m-primary-dark);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title::before {
  content: "";
  display: block;
  width: 3px;
  height: 16px;
  background: var(--m-primary);
  border-radius: 2px;
}

/* Keypoints card */
#motionLandmarkPreview {
  font-size: 12px;
  color: var(--m-muted);
  line-height: 1.6;
  min-height: 40px;
}

/* Export card */
.export-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.export-row:last-child {
  margin-bottom: 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--m-muted);
  cursor: pointer;
}

progress {
  flex: 1;
  height: 4px;
  border-radius: 2px;
  accent-color: var(--m-primary);
}

.export-status {
  font-size: 12px;
  color: var(--m-muted);
}

.video-output {
  margin-top: 12px;
}

.video-output video {
  width: 100%;
  border-radius: 8px;
  background: #000;
}

.download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  margin-top: 10px;
  padding: 10px;
  background: var(--m-primary);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  transition: background 0.15s;
}

.download-btn:hover {
  background: var(--m-primary-dark);
}

/* AI card */
.ai-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.stroke-select {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--m-border);
  border-radius: 8px;
  font-size: 13px;
  color: var(--m-text);
  background: var(--m-bg);
}

.ai-status {
  padding: 10px 12px;
  background: #e0f2fe;
  border-radius: 8px;
  font-size: 13px;
  color: var(--m-primary);
  margin-bottom: 12px;
}

.ai-report {
  padding: 12px;
  background: var(--m-bg);
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--m-text);
}

.report-downloads {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* AI report dynamic elements */
.motion-report-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--m-primary-dark);
}

.motion-summary-metric {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 16px;
  font-size: 13px;
  color: var(--m-muted);
}

.motion-summary-metric strong {
  color: var(--m-primary);
  font-weight: 700;
}

.motion-summary-assessment {
  font-size: 13px;
  line-height: 1.7;
  margin: 10px 0;
  color: var(--m-text);
}

.motion-report-meta {
  font-size: 12px;
  color: var(--m-muted);
  margin: 4px 0;
}

.motion-report-block {
  margin-top: 16px;
}

.motion-report-block h4 {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--m-primary-dark);
}

.motion-issue-list,
.motion-training-list,
.motion-timeline-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.motion-issue-card,
.motion-training-card,
.motion-timeline-item {
  padding: 12px;
  background: var(--m-bg);
  border-radius: 8px;
  border-left: 3px solid var(--m-primary);
}

.motion-issue-card h4 {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.motion-severity {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  background: #fee2e2;
  color: #dc2626;
}

.motion-severity-medium {
  background: #fef3c7;
  color: #d97706;
}

.motion-severity-low {
  background: #d1fae5;
  color: #059669;
}

.motion-issue-meta {
  font-size: 12px;
  color: var(--m-muted);
  margin: 2px 0 6px;
}

.motion-issue-clip {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--m-border);
}

.motion-clip-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 13px;
}

.motion-clip-status {
  font-size: 12px;
  color: var(--m-muted);
}

.motion-issue-clip-video {
  width: 100%;
  border-radius: 6px;
  background: #000;
}

.motion-clip-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.motion-clip-export-button {
  padding: 6px 12px;
  border: none;
  border-radius: 6px;
  background: var(--m-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.motion-clip-download-link {
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--m-bg);
  color: var(--m-text);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
}

.motion-training-card h4 {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--m-primary-dark);
}

.motion-timeline-item h4 {
  font-size: 12px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--m-primary);
  font-variant-numeric: tabular-nums;
}

.motion-timeline-item p {
  font-size: 13px;
  margin: 0;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 900px) {
  .motion-main {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }

  .video-card {
    min-height: 280px;
  }

  .control-bar {
    justify-content: center;
  }

  .control-bar .slider-group {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }

  .motion-status-pills {
    display: none;
  }
}