/* ════════════════════════════════════════════════════════════════
   Student learning record — friendly growth screen (1920×1080).
   Prefixed with student-record- so other scenes are untouched.
   ════════════════════════════════════════════════════════════════ */

body.student-record-active {
  background:
    radial-gradient(ellipse 90% 70% at 20% 10%, rgba(120, 200, 255, 0.35), transparent 55%),
    radial-gradient(ellipse 80% 60% at 85% 20%, rgba(90, 170, 255, 0.22), transparent 50%),
    linear-gradient(165deg, #d7eefc 0%, #e8f4ff 42%, #f3f8ff 100%);
}

.student-record-scene {
  --sr-bg: #eaf5ff;
  --sr-panel: #ffffff;
  --sr-border: #d4e6f7;
  --sr-text: #1a3550;
  --sr-muted: #5f7a94;
  --sr-blue: #2f7fd4;
  --sr-blue-soft: #e3f1ff;
  --sr-cyan: #2aa8c4;
  --sr-green: #2f9b6a;
  --sr-green-soft: #e5f7ee;
  --sr-orange: #d4892b;
  --sr-orange-soft: #fff1dc;
  --sr-gray: #90a0b2;
  --sr-gray-soft: #eef2f6;
  --sr-radius: 14px;
  --sr-shadow: 0 10px 28px rgba(40, 90, 140, 0.08);

  position: relative;
  width: 1920px;
  height: 1080px;
  box-sizing: border-box;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 28px 40px 24px;
  color: var(--sr-text);
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.7), transparent 40%),
    linear-gradient(180deg, #dff0ff 0%, #eef7ff 55%, #f7fbff 100%);
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
}

.student-record-header {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: 140px 1fr 160px;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.student-record-back-btn,
.student-record-refresh-btn {
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--sr-border);
  background: rgba(255, 255, 255, 0.88);
  color: var(--sr-text);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--sr-shadow);
}

.student-record-back-btn:hover,
.student-record-refresh-btn:hover:not(:disabled) {
  background: #fff;
  border-color: #b8d6ef;
}

.student-record-refresh-btn:disabled {
  opacity: 0.65;
  cursor: default;
}

.student-record-title-wrap {
  text-align: center;
}

.student-record-title {
  margin: 0;
  font-size: 34px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #163a5c;
}

.student-record-subtitle {
  margin: 4px 0 0;
  font-size: 16px;
  color: var(--sr-muted);
  font-weight: 600;
}

.student-record-robok {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 920px;
  margin: 0 auto 14px;
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-robok-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #7ad0ff, #4aa4ef);
  font-size: 22px;
}

.student-record-robok-text {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: #245072;
}

.student-record-toast {
  flex: 0 0 auto;
  align-self: center;
  margin-bottom: 10px;
  padding: 10px 18px;
  border-radius: 12px;
  background: var(--sr-orange-soft);
  color: #8a5310;
  font-size: 15px;
  font-weight: 700;
}

.student-record-tabs {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
}

.student-record-tab {
  min-width: 150px;
  height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--sr-muted);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

.student-record-tab:hover {
  background: #fff;
  color: var(--sr-text);
}

.student-record-tab.is-active {
  background: linear-gradient(135deg, #3b93e6, #2f7fd4);
  color: #fff;
  box-shadow: 0 8px 18px rgba(47, 127, 212, 0.28);
}

.student-record-main {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 8px 20px;
  scrollbar-width: thin;
  scrollbar-color: #9ec4e6 transparent;
}

.student-record-panel {
  max-width: 1480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.student-record-state {
  max-width: 640px;
  margin: 80px auto 0;
  padding: 40px 36px;
  text-align: center;
  border-radius: 16px;
  background: var(--sr-panel);
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-state h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.student-record-state p {
  margin: 0 0 22px;
  font-size: 17px;
  color: var(--sr-muted);
  line-height: 1.5;
}

.student-record-spinner {
  width: 42px;
  height: 42px;
  margin: 0 auto 16px;
  border-radius: 50%;
  border: 4px solid #cfe4f8;
  border-top-color: var(--sr-blue);
  animation: student-record-spin 0.8s linear infinite;
}

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

.student-record-blocked {
  display: grid;
  place-items: center;
  padding: 40px;
}

.student-record-blocked-card {
  width: min(560px, 100%);
  padding: 40px 36px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
  text-align: center;
}

.student-record-blocked-card h1 {
  margin: 0 0 12px;
  font-size: 30px;
}

.student-record-blocked-card p {
  margin: 0 0 24px;
  font-size: 17px;
  color: var(--sr-muted);
  line-height: 1.55;
}

.student-record-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
}

.student-record-btn:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.student-record-btn-primary {
  background: linear-gradient(135deg, #3b93e6, #2a74c8);
  color: #fff;
  box-shadow: 0 8px 16px rgba(42, 116, 200, 0.25);
}

.student-record-btn-secondary {
  background: #fff;
  border-color: var(--sr-border);
  color: var(--sr-blue);
}

.student-record-btn-soft {
  background: var(--sr-blue-soft);
  color: #1f6bb3;
}

.student-record-btn-ghost {
  background: var(--sr-gray-soft);
  color: var(--sr-gray);
  border-color: #e0e6ee;
}

.student-record-celebrate {
  padding: 18px 22px;
  border-radius: var(--sr-radius);
  background: linear-gradient(120deg, #fff7d8, #e8fff4);
  border: 1px solid #f0e0a8;
}

.student-record-celebrate strong {
  display: block;
  font-size: 22px;
  margin-bottom: 4px;
}

.student-record-celebrate p {
  margin: 0;
  color: #5a6b40;
  font-weight: 600;
}

.student-record-hero {
  padding: 24px 28px;
  border-radius: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #eef7ff 100%);
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-hero-kicker {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 800;
  color: var(--sr-cyan);
  letter-spacing: 0.04em;
}

.student-record-hero-title {
  margin: 0;
  font-size: 30px;
  font-weight: 900;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.student-record-hero-rate {
  font-size: 22px;
  color: var(--sr-blue);
}

.student-record-progress-track {
  margin-top: 14px;
  height: 14px;
  border-radius: 999px;
  background: #d9ebfa;
  overflow: hidden;
}

.student-record-progress-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #57c4e8, #3b93e6);
}

.student-record-hero-meta {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--sr-muted);
  font-weight: 600;
}

.student-record-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.student-record-stat-card {
  padding: 18px 16px;
  border-radius: var(--sr-radius);
  background: var(--sr-panel);
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-stat-label {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--sr-muted);
}

.student-record-stat-value {
  margin: 0;
  font-size: 26px;
  font-weight: 900;
  color: #1d4f7a;
}

.student-record-next-card,
.student-record-recommend-card,
.student-record-section {
  padding: 22px 24px;
  border-radius: 16px;
  background: var(--sr-panel);
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-section-label {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 800;
  color: var(--sr-cyan);
  letter-spacing: 0.03em;
}

.student-record-section-title {
  margin: 0 0 14px;
  font-size: 22px;
  font-weight: 900;
}

.student-record-section-lead {
  margin: 0;
  font-size: 17px;
  color: var(--sr-muted);
  font-weight: 600;
}

.student-record-next-card h3,
.student-record-recommend-card h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.student-record-next-card p,
.student-record-recommend-card p {
  margin: 0 0 16px;
  color: var(--sr-muted);
  font-size: 16px;
  line-height: 1.5;
}

.student-record-next-actions {
  display: flex;
  gap: 10px;
}

.student-record-bullet-list {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 8px;
  font-size: 17px;
  font-weight: 650;
  line-height: 1.45;
}

.student-record-empty-note {
  margin: 0;
  color: var(--sr-muted);
  font-size: 16px;
  font-weight: 600;
}

.student-record-tip-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.student-record-tip-card {
  padding: 16px;
  border-radius: 12px;
  background: var(--sr-blue-soft);
  border: 1px solid #cfe3f8;
}

.student-record-tip-card h4 {
  margin: 0 0 6px;
  font-size: 17px;
}

.student-record-tip-card p {
  margin: 0 0 12px;
  color: #42607a;
  font-size: 14px;
  line-height: 1.45;
}

.student-record-badge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.student-record-badge {
  position: relative;
  padding: 16px 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--sr-border);
  background: #fff;
  min-height: 118px;
}

.student-record-badge strong {
  display: block;
  font-size: 17px;
  margin-bottom: 6px;
}

.student-record-badge p {
  margin: 0;
  font-size: 14px;
  color: var(--sr-muted);
  line-height: 1.4;
}

.student-record-badge-flag {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 12px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
}

.student-record-badge.is-earned {
  background: linear-gradient(160deg, #f4fbff, #e8f7ff);
  border-color: #b8daf5;
}

.student-record-badge.is-earned .student-record-badge-flag {
  background: var(--sr-green-soft);
  color: var(--sr-green);
}

.student-record-badge.is-locked {
  background: var(--sr-gray-soft);
  border-color: #e2e7ee;
  filter: grayscale(0.35);
  opacity: 0.82;
}

.student-record-badge.is-locked .student-record-badge-flag {
  background: #e4e8ee;
  color: var(--sr-gray);
}

.student-record-stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.student-record-stage-card {
  padding: 18px 18px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.student-record-stage-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.student-record-stage-number {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--sr-blue-soft);
  color: var(--sr-blue);
  font-weight: 900;
}

.student-record-status-chip {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.student-record-status-chip.is-completed {
  background: var(--sr-green-soft);
  color: var(--sr-green);
}

.student-record-status-chip.is-learning {
  background: var(--sr-orange-soft);
  color: var(--sr-orange);
}

.student-record-status-chip.is-idle {
  background: var(--sr-blue-soft);
  color: var(--sr-blue);
}

.student-record-status-chip.is-locked {
  background: var(--sr-gray-soft);
  color: var(--sr-gray);
}

.student-record-stage-card h3 {
  margin: 0;
  font-size: 22px;
}

.student-record-stage-concept {
  margin: 0;
  color: var(--sr-muted);
  font-size: 15px;
  font-weight: 650;
}

.student-record-stage-stats {
  margin: 6px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.student-record-stage-stats div {
  padding: 8px;
  border-radius: 10px;
  background: #f5f9fd;
  text-align: center;
}

.student-record-stage-stats dt {
  font-size: 11px;
  color: var(--sr-muted);
  font-weight: 700;
}

.student-record-stage-stats dd {
  margin: 2px 0 0;
  font-size: 15px;
  font-weight: 850;
}

.student-record-stage-last {
  margin: 0;
  font-size: 13px;
  color: var(--sr-muted);
}

.student-record-stage-actions {
  margin-top: auto;
  padding-top: 6px;
}

.student-record-stage-card.is-locked {
  background: #f4f6f8;
  opacity: 0.88;
}

.student-record-wrong-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  flex-wrap: wrap;
}

.student-record-filter {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--sr-muted);
}

.student-record-filter select {
  min-width: 220px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--sr-border);
  padding: 0 12px;
  font-size: 15px;
  font-weight: 700;
  color: var(--sr-text);
  background: #fff;
}

.student-record-wrong-list {
  display: grid;
  gap: 12px;
}

.student-record-wrong-card {
  padding: 16px 18px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--sr-border);
  box-shadow: var(--sr-shadow);
}

.student-record-wrong-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--sr-muted);
}

.student-record-wrong-card h4 {
  margin: 0 0 8px;
  font-size: 18px;
}

.student-record-wrong-card p {
  margin: 0 0 6px;
  font-size: 15px;
  color: #45657f;
}

.student-record-wrong-card .student-record-btn {
  margin-top: 10px;
}

.student-record-worksheet-empty {
  padding: 18px;
  border-radius: 12px;
  background: var(--sr-gray-soft);
  color: var(--sr-muted);
  font-weight: 650;
}

/* ── Teacher view (read-only overlay on same layout) ───────────── */

.student-record-scene.is-teacher-view {
  padding-top: 18px;
}

.student-record-teacher-banner {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(90deg, rgba(36, 72, 112, 0.92), rgba(47, 95, 140, 0.88));
  border: 1px solid rgba(180, 210, 235, 0.35);
  color: #eaf3fb;
  box-shadow: 0 8px 20px rgba(30, 60, 90, 0.18);
}

.student-record-teacher-banner-text {
  min-width: 0;
  flex: 1 1 auto;
}

.student-record-teacher-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.student-record-chip {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.02em;
}

.student-record-chip.is-teacher {
  background: rgba(120, 180, 230, 0.28);
  color: #dcecff;
  border: 1px solid rgba(180, 210, 240, 0.4);
}

.student-record-chip.is-readonly {
  background: rgba(160, 180, 200, 0.28);
  color: #d5e0ea;
  border: 1px solid rgba(180, 195, 210, 0.35);
}

.student-record-teacher-banner-lead {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 800;
  color: #f4f9ff;
}

.student-record-teacher-banner-copy {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: rgba(230, 240, 250, 0.88);
  line-height: 1.45;
}

.student-record-teacher-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 0 0 auto;
  justify-content: flex-end;
}

.student-record-teacher-banner-actions .student-record-btn {
  height: 38px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(210, 225, 240, 0.35);
  color: #eef6ff;
}

.student-record-teacher-banner-actions .student-record-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.student-record-caption {
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 700;
  color: #3d6a92;
}

.student-record-scene.is-teacher-view .student-record-main {
  max-height: calc(1080px - 320px);
}

.student-record-empty-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 8px;
}