/* ============================================================
   Daily Revision Module — evening plan, companions, test
   ============================================================ */

.drev {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  animation: fadeInUp 0.35s var(--ease-out);
}

.drev__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px 16px;
  margin-bottom: 24px;
}

.drev__back {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: none;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.drev__head-text { flex: 1; min-width: 200px; }

.drev__kicker {
  display: block;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.drev__header h1 {
  font-family: var(--font-display, inherit);
  font-size: 1.75rem;
  font-weight: var(--font-weight-bold);
  margin: 0 0 6px;
}

.drev__header p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.drev-badge {
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.drev-badge--ready {
  color: #0d7a4a;
  background: color-mix(in srgb, #10b981 15%, transparent);
}

.drev-badge--wait {
  color: var(--color-text-secondary);
  background: var(--color-bg-subtle);
}

.drev-badge--active {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.drev-badge--done {
  color: #6b21a8;
  background: color-mix(in srgb, #a855f7 15%, transparent);
}

.drev-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

@media (max-width: 640px) {
  .drev-stats { grid-template-columns: repeat(2, 1fr); }
}

.drev-stat {
  text-align: center;
  padding: 14px 10px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.drev-stat__val {
  display: block;
  font-size: 1.35rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
}

.drev-stat__label {
  font-size: 11px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.drev-panel {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
}

.drev-panel__head h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.drev-panel__head p {
  margin: 0 0 16px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.drev-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drev-timeline__item {
  display: grid;
  grid-template-columns: 72px 1fr 28px;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.drev-timeline__item--done {
  opacity: 0.75;
  border-color: color-mix(in srgb, #10b981 30%, transparent);
}

.drev-timeline__time {
  font-size: 12px;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.drev-timeline__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.drev-timeline__body strong {
  font-size: var(--font-size-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.drev-timeline__body span {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.drev-timeline__status {
  text-align: center;
  font-weight: bold;
  color: var(--color-accent);
}

.drev-empty {
  margin: 0;
  padding: 16px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.drev-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.drev-how {
  padding: 18px 20px;
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-bg-subtle));
  border-radius: var(--radius-lg);
  border: 1px dashed color-mix(in srgb, var(--color-accent) 25%, var(--color-border));
}

.drev-how h3 {
  margin: 0 0 10px;
  font-size: var(--font-size-sm);
}

.drev-how ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.65;
}

/* Review step */
.drev-review {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  animation: fadeInUp 0.3s var(--ease-out);
}

.drev-review__head {
  margin-bottom: 20px;
}

.drev-review__progress {
  display: inline-block;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  margin-bottom: 8px;
}

.drev-review__head h2 {
  margin: 0 0 6px;
  font-size: 1.4rem;
}

.drev-review__head p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.drev-review__paper {
  padding: 28px 32px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 20px;
  max-height: 62vh;
  overflow-y: auto;
  box-shadow: 0 1px 3px color-mix(in srgb, var(--color-text) 6%, transparent);
}

.drev-review__paper.md-preview {
  white-space: normal;
  font-size: var(--font-size-base, 15px);
  line-height: 1.7;
}

.drev-review__paper.md-preview h1 {
  font-size: 1.35rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.drev-review__paper.md-preview h2 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.65rem;
  color: var(--color-accent);
}

.drev-review__paper.md-preview h3 {
  font-size: 1rem;
  margin: 1.15rem 0 0.5rem;
}

.drev-review__paper.md-preview blockquote {
  margin: 0 0 1rem;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-secondary);
  background: color-mix(in srgb, var(--color-accent) 5%, transparent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.drev-review__paper.md-preview ul,
.drev-review__paper.md-preview ol {
  padding-left: 1.35rem;
  margin: 0.5rem 0 1rem;
}

.drev-review__paper.md-preview li {
  margin-bottom: 0.35rem;
}

.drev-review__paper.md-preview li + li {
  margin-top: 0.15rem;
}

.drev-review__paper.md-preview strong {
  color: var(--color-text);
}

.drev-review__paper.md-preview hr {
  margin: 1.5rem 0;
  border: none;
  border-top: 1px dashed var(--color-border);
}

.drev-review__foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* Test step */
.drev-test {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.drev-test__head {
  margin-bottom: 24px;
}

.drev-test__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.drev-test__prog {
  float: right;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.drev-test__head h2 {
  clear: both;
  margin: 0 0 8px;
  font-size: 1.25rem;
  line-height: 1.4;
}

.drev-test__topic {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.drev-test__options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drev-test__opt {
  text-align: left;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-elevated);
  cursor: pointer;
  font-size: var(--font-size-sm);
  line-height: 1.45;
  transition: border-color 0.15s, background 0.15s;
}

.drev-test__opt:hover {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-bg-elevated));
}

/* Complete */
.drev-complete {
  max-width: 480px;
  margin: 0 auto;
  padding: 48px 20px;
  text-align: center;
  animation: fadeInUp 0.35s var(--ease-out);
}

.drev-complete__icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.drev-complete h2 {
  margin: 0 0 10px;
}

.drev-complete p {
  color: var(--color-text-secondary);
  margin: 0 0 20px;
}

.drev-complete__stats {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Loading */
.drev-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  gap: 16px;
  color: var(--color-text-secondary);
}

.drev-loading__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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