/* SCXZ training MVP — readable, mobile-first; no theme polish */

:root {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.5;
  color: #1a1a1a;
  background: #f5f5f5;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0.75rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.training-header {
  margin-bottom: 1rem;
}

.training-header h1 {
  font-size: 1.25rem;
  margin: 0 0 0.25rem;
  font-weight: 700;
}

.training-sub {
  font-size: 0.875rem;
  color: #444;
  margin: 0;
}

.training-banner {
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  border: 1px solid #ccc;
  background: #fff;
}

.training-banner[hidden] {
  display: none !important;
}

.training-banner--error {
  border-color: #c62828;
  background: #ffebee;
  color: #b71c1c;
}

.training-banner--info {
  border-color: #1565c0;
  background: #e3f2fd;
  color: #0d47a1;
}

.training-meta {
  margin-bottom: 1rem;
}

.training-meta dt {
  font-size: 0.75rem;
  color: #555;
  margin: 0 0 0.15rem;
}

.training-meta dd {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.training-scene {
  white-space: pre-wrap;
  font-size: 0.95rem;
}

.training-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.5rem 0 1rem;
}

.training-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: #e0e0e0;
  color: #333;
}

.training-section-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: #444;
  margin: 0 0 0.35rem;
}

.tile-panel {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 0.6rem 0.65rem;
  margin-bottom: 0.75rem;
}

.scxz-tile-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.46rem;
  align-items: center;
}

.scxz-tile-row__empty {
  margin: 0;
  font-size: 0.9rem;
  color: #666;
}

.scxz-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.2rem;
  min-width: 3.2rem;
  height: 4.4rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-size: 0.8rem;
  font-weight: 600;
  overflow: hidden;
  filter: drop-shadow(0 0.12rem 0.12rem rgba(0, 0, 0, 0.34));
}

.scxz-tile__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.scxz-tile__img[hidden] {
  display: none;
}

.scxz-tile__face--text {
  user-select: none;
  padding: 0.2rem 0.35rem;
}

.scxz-tile--image .scxz-tile__face--text {
  display: none;
}

.training-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 1rem;
  border: 1px solid #888;
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.training-option:active:not(:disabled) {
  background: #eee;
}

.training-option:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.result-panel,
.explain-panel {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.75rem;
}

.result-panel[hidden],
.explain-panel[hidden] {
  display: none !important;
}

.training-result__body {
  margin: 0;
  white-space: pre-wrap;
  font-size: 0.95rem;
}

.training-result__body--ok {
  color: #1b5e20;
}

.training-result__body--bad {
  color: #b71c1c;
}

.explain-panel pre,
.training-explain-body {
  margin: 0;
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 0.9rem;
}

.training-actions {
  margin-top: 1rem;
}

.training-actions button {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #333;
  background: #333;
  color: #fff;
  cursor: pointer;
}

.training-actions button[hidden] {
  display: none !important;
}

.training-actions button:active {
  opacity: 0.9;
}