/* ==================== 课程系统 CSS 追加内容 ====================
   追加至 style.css 末尾
   涵盖：三级导航 / 分科卡片 / 进度条 / 评级徽章 / 学习结果弹窗 / 成就Toast
   ============================================================ */

/* ── 一级：大类按钮 ────────────────────────────────────── */
#course-category-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 10px 0;
}

.course-cat-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  text-align: left;
  background: var(--bg-card);
  border: 1px solid #2a3b66;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  flex: none; /* override global .btn flex:1 */
  min-width: unset;
}
.course-cat-btn:hover:not([disabled]) {
  background: #242f47;
  border-color: #3b4f8a;
  transform: translateY(-1px);
}
.course-cat-icon {
  font-size: 28px;
  flex-shrink: 0;
}
.course-cat-name {
  font-size: 16px;
  font-weight: bold;
  color: var(--color-gold);
}
.course-cat-lock {
  font-size: 12px;
  color: #888;
  margin-top: 2px;
  display: block;
}
.btn--locked {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── 二级：科目按钮 ────────────────────────────────────── */
.course-sub-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.course-sub-btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  background: var(--bg-card);
  border: 1px solid #2a3b66;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  flex: none;
  min-width: unset;
}
.course-sub-btn:hover:not([disabled]) {
  background: #242f47;
  border-color: #3b4f8a;
  transform: translateY(-1px);
}
.course-sub-icon {
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}
.course-sub-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.course-sub-name {
  font-size: 15px;
  font-weight: bold;
  color: var(--color-gold);
}
.course-sub-desc {
  font-size: 12px;
  color: var(--color-text-light);
}
.course-sub-lock {
  font-size: 12px;
  color: #888;
}

/* ── 三级：麻瓜研究分科 ────────────────────────────────── */
.course-muggle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 8px;
}

.course-muggle-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid #2a3b66;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  flex: none;
  min-width: unset;
  min-height: 90px;
}
.course-muggle-btn:hover:not([disabled]) {
  background: #242f47;
  border-color: #3b4f8a;
  transform: translateY(-1px);
}
.course-muggle-icon {
  font-size: 26px;
}
.course-muggle-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}
.course-muggle-name {
  font-size: 13px;
  font-weight: bold;
  color: var(--color-gold);
}

/* ── 返回按钮 ───────────────────────────────────────────── */
.course-back-btn {
  background: var(--bg-input);
  color: var(--color-text-light);
  border: none;
  padding: 7px 14px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  margin-bottom: 8px;
  transition: all 0.2s;
  flex: none;
  min-width: unset;
  width: auto;
}
.course-back-btn:hover {
  background: #2a3b66;
  color: var(--color-text);
}

/* ── 进度条 ─────────────────────────────────────────────── */
.course-progress-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}
.course-progress-label {
  font-size: 11px;
  color: var(--color-text-light);
  white-space: nowrap;
  flex-shrink: 0;
}
.course-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}
.course-progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}
.course-progress-fill--high { background: #8f8; }
.course-progress-fill--mid  { background: #aad4f0; }
.course-progress-fill--low  { background: #f8c850; }
.course-progress-pct {
  font-size: 11px;
  color: var(--color-text-light);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 28px;
  text-align: right;
}

/* ── 评级徽章 ────────────────────────────────────────────── */
.rating-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 1px;
}
.rating-badge--O { background: #4a3a00; color: #ffd700; }
.rating-badge--E { background: #1a3a1a; color: #98e898; }
.rating-badge--A { background: #1a2a3a; color: #aad4f0; }
.rating-badge--P { background: #2a2a2a; color: #ccc; }
.rating-badge--D { background: #3a1a1a; color: #f88; }
.rating-badge--T { background: #2a0a0a; color: #f44; }

/* ── 学习结果弹窗 ───────────────────────────────────────── */
.study-result-overlay {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.72);
  z-index: 10100;
  display: flex;
  align-items: center;
  justify-content: center;
}
.study-result-modal {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 24px 22px 20px;
  width: 90%;
  max-width: 380px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 6px 32px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid #2a3b66;
}
.study-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid #2a3b66;
  padding-bottom: 10px;
}
.study-result-subject {
  font-size: 17px;
  font-weight: bold;
  color: var(--color-gold);
}
.study-result-rating {
  font-size: 28px;
  font-weight: bold;
}
.study-result-event {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  font-style: italic;
}
.study-result-comment {
  font-size: 13px;
  color: var(--color-text-light);
  background: var(--bg-dark);
  border-radius: 8px;
  padding: 10px 12px;
  border-left: 3px solid var(--color-gold);
  line-height: 1.6;
}
.study-result-stats {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.study-stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text);
}
.study-result-achievements {
  background: #1a2a1a;
  border-radius: 8px;
  padding: 10px 12px;
  border: 1px solid #2a4a2a;
}
.achieve-title {
  font-size: 13px;
  font-weight: bold;
  color: #f8c850;
  margin-bottom: 6px;
}
.achieve-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  padding: 3px 0;
}
.achieve-icon { font-size: 18px; }
.achieve-name { flex: 1; color: var(--color-text); }
.achieve-pts { color: #f8c850; font-weight: bold; }

.study-result-close {
  margin-top: 4px;
  width: 100%;
  background: var(--bg-btn-action);
  color: #fff;
  border: none;
  padding: 11px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: bold;
  transition: background 0.2s;
}
.study-result-close:hover {
  background: var(--bg-btn-action-hover);
}

/* ── 成就解锁 Toast ─────────────────────────────────────── */
.achievement-toast {
  position: fixed;
  bottom: 24px;
  right: 16px;
  z-index: 10200;
  background: #1a2a1a;
  border: 1px solid #2a4a2a;
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 200px;
  max-width: 280px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  transform: translateX(120%);
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.achievement-toast--show {
  transform: translateX(0);
}
.toast-icon { font-size: 22px; flex-shrink: 0; }
.toast-text { flex: 1; }
.toast-title {
  font-size: 10px;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.toast-name {
  font-size: 13px;
  color: var(--color-gold);
  font-weight: bold;
}
.toast-pts {
  font-size: 13px;
  color: #8f8;
  font-weight: bold;
  flex-shrink: 0;
}

/* ── 响应式：小屏幕适配 ─────────────────────────────────── */
@media (max-width: 480px) {
  .course-muggle-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .course-muggle-btn {
    min-height: 80px;
    padding: 10px 6px;
  }
  .course-muggle-name {
    font-size: 12px;
  }
  .study-result-modal {
    padding: 18px 16px 16px;
    border-radius: 12px;
  }
  .study-result-rating {
    font-size: 24px;
  }
  .achievement-toast {
    bottom: 16px;
    right: 8px;
    left: 8px;
    max-width: none;
    min-width: unset;
  }
}

@media (max-width: 320px) {
  .course-muggle-grid {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
}

.course-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 8px;
  border-bottom: 2px solid #2a3b66;
}
.course-tab {
  flex: 1;
  padding: 8px 0;
  background: none;
  border: none;
  color: #888;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}
.course-tab.active {
  color: #f8c850;
  border-bottom-color: #f8c850;
}
.course-tab:hover:not(.active) {
  color: #bbb;
}

.schedule-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.schedule-grade {
  font-size: 15px;
  font-weight: bold;
  color: #f8c850;
  justify-self: center;
  grid-column: 2;
}
.schedule-date {
  font-size: 12px;
  color: #aaa;
}
.schedule-holiday-tag {
  font-size: 11px;
  color: #5cb85c;
  background: rgba(92,184,92,0.12);
  border: 1px solid rgba(92,184,92,0.25);
  border-radius: 4px;
  padding: 2px 8px;
  grid-column: 1;
  justify-self: start;
}

.schedule-exam-entry-btn {
  justify-self: end;
  grid-column: 3;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid rgba(248,200,80,0.35);
  background: rgba(248,200,80,0.08);
  color: #f8c850;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
  flex: none;
  min-width: unset;
}
.schedule-exam-entry-btn:hover {
  background: rgba(248,200,80,0.18);
  border-color: rgba(248,200,80,0.6);
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 12px;
  font-size: 11px;
}
.schedule-row {
  display: flex;
  border-bottom: 1px solid #2a3b66;
}
.schedule-row-header {
  background: #1e293b;
  border-bottom: 2px solid #3a4b76;
}
.schedule-cell {
  flex: 1;
  padding: 6px 4px;
  text-align: center;
  min-width: 0;
  border-right: 1px solid rgba(255,255,255,0.04);
}
.schedule-cell-time {
  flex: 0.6;
  color: #888;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.schedule-cell-weekend {
  background: rgba(255,255,255,0.02);
}
.schedule-course-cell {
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}
.schedule-course-cell:hover,
.schedule-course-cell:focus-visible {
  background: rgba(248,200,80,0.16);
  border-color: rgba(248,200,80,0.42);
  outline: none;
}
.schedule-course-cell:active {
  transform: translateY(1px);
}
.schedule-cell-today {
  background: rgba(248,200,80,0.1);
  border: 1px solid rgba(248,200,80,0.3);
  border-radius: 4px;
}
.schedule-icon {
  font-size: 16px;
  margin-bottom: 2px;
}
.schedule-name {
  font-size: 11px;
  color: #e6e6e6;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.schedule-prof {
  font-size: 9px;
  color: #777;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.schedule-empty {
  font-size: 10px;
  color: #555;
  padding: 8px 0;
}

.schedule-holidays {
  background: #1e293b;
  border: 1px solid #2a3b66;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 10px;
}
.schedule-holidays-title {
  font-size: 13px;
  color: #f8c850;
  font-weight: bold;
  margin-bottom: 6px;
}
.schedule-holiday-item {
  font-size: 11px;
  color: #aaa;
  padding: 3px 0;
  line-height: 1.5;
}
.schedule-holiday-current {
  color: #5cb85c;
  font-weight: bold;
}

.schedule-note {
  font-size: 10px;
  color: #666;
  text-align: center;
  padding: 4px 0;
}

/* ── 考试页面样式 ─────────────────────────────────────────── */
.exam-page {
  padding: 12px;
}
.exam-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.exam-title {
  font-size: 13px;
  color: #b2dfdb;
}
.exam-info {
  font-size: 11px;
  color: #7ecdc8;
  margin-bottom: 12px;
  line-height: 1.6;
}
.exam-info-highlight {
  color: #88f8d8;
  font-weight: bold;
}

/* ── 考试区块样式 ─────────────────────────────────────────── */
.exam-block {
  margin-bottom: 16px;
}
.exam-block-title {
  font-size: 14px;
  font-weight: bold;
  color: #88f8d8;
  margin-bottom: 4px;
}
.exam-block-subtitle {
  font-size: 11px;
  color: #7ecdc8;
  margin-bottom: 8px;
}
.exam-block-locked {
  color: #ff8888;
  font-size: 12px;
  padding: 8px;
  background: #1a2a2a;
  border-radius: 6px;
}
.exam-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

/* ── 考试按钮样式 ─────────────────────────────────────────── */
.exam-btn {
  padding: 8px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 12px;
  transition: background 0.2s;
}
.exam-btn--completed {
  background: #1a3a1a;
  color: #88f8d8;
}
.exam-btn--completed.fail {
  color: #ff8888;
}
.exam-btn--eligible {
  background: #1d3b3a;
  color: #e0f7f5;
}
.exam-btn--eligible:hover {
  background: #2a4a48;
}
.exam-btn--locked {
  background: #1a1a2a;
  color: #888;
  cursor: not-allowed;
  opacity: 0.7;
}
.exam-btn-icon {
  margin-right: 4px;
}
.exam-btn-status {
  font-size: 11px;
  margin-top: 2px;
}
.exam-btn-status--passed {
  color: #88f8d8;
}
.exam-btn-status--eligible {
  color: #88f8d8;
}
.exam-btn-status--locked {
  color: #666;
}

/* ── 霍格沃茨考试特殊样式 ─────────────────────────────────── */
.hogwarts-exam-block {
  background: #151520;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 12px;
}
.hogwarts-exam-list {
  display: flex;
  flex-direction: column;
}
.hogwarts-exam-item {
  padding: 12px 14px;
  margin-bottom: 8px;
  width: 100%;
  text-align: left;
  background: #1d3b3a;
  border: 1px solid #2b5654;
  border-radius: 6px;
  color: #e0f7f5;
  cursor: pointer;
  transition: all 0.2s;
  box-sizing: border-box;
}
.hogwarts-exam-item:hover:not(:disabled) {
  border-color: #88f8d8;
}
.hogwarts-exam-item:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}
.hogwarts-exam-item--completed {
  border-color: #88f8d8;
}
.hogwarts-exam-item--completed.fail {
  border-color: #ff8888;
}
.hogwarts-exam-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hogwarts-exam-item-name {
  font-size: 13px;
}
.hogwarts-exam-item-grade {
  font-size: 14px;
  font-weight: bold;
}
.hogwarts-exam-item-grade--passed {
  color: #88f8d8;
}
.hogwarts-exam-item-grade--failed {
  color: #ff8888;
}
.hogwarts-exam-item-grade--eligible {
  color: #ffc888;
}
.hogwarts-exam-item-grade--locked {
  color: #666;
}
.hogwarts-exam-item-detail {
  font-size: 11px;
  margin-top: 4px;
}
.hogwarts-exam-item-detail--success {
  color: #7ecdc8;
}
.hogwarts-exam-item-detail--error {
  color: #ff8888;
}

/* ── 考试会话页面 ─────────────────────────────────────────── */
.exam-session {
  padding: 14px;
}
.exam-session-title {
  font-size: 14px;
  color: #ffc888;
  margin-bottom: 12px;
}
.exam-session-desc {
  font-size: 12px;
  color: #b2dfdb;
  margin-bottom: 14px;
}
.exam-action-btn {
  width: 100%;
  padding: 10px;
  background: #2b5654;
  color: #88f8d8;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  margin-bottom: 8px;
  transition: background 0.2s;
}
.exam-action-btn:hover {
  background: #3a6a68;
}
.exam-action-btn--secondary {
  padding: 8px;
  background: #1a1a2a;
  color: #888;
  font-size: 12px;
}
.exam-action-btn--secondary:hover {
  background: #2a2a3a;
}

/* ── 考试结果页面 ─────────────────────────────────────────── */
.exam-result {
  padding: 14px;
}
.exam-result-title {
  font-size: 14px;
  font-weight: bold;
  color: #e0f7f5;
  margin-bottom: 8px;
}
.exam-result-grade {
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 4px;
}
.exam-result-grade--passed {
  color: #88f8d8;
}
.exam-result-grade--failed {
  color: #ff8888;
}
.exam-result-grade-name {
  font-size: 13px;
  margin-top: 4px;
}
.exam-result-score {
  font-size: 12px;
  color: #7ecdc8;
  margin-top: 8px;
}
.exam-result-narrative {
  font-size: 12px;
  color: #b2dfdb;
  line-height: 1.6;
  white-space: pre-line;
  padding: 10px;
  background: #111;
  border-radius: 6px;
  margin-bottom: 12px;
  margin-top: 12px;
}
.exam-result-back-btn {
  width: 100%;
  padding: 10px;
  background: #1d3b3a;
  color: #e0f7f5;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

/* ── 考试警告样式 ─────────────────────────────────────────── */
.exam-warn {
  color: #ff8888;
  font-size: 12px;
  display: none;
  margin-bottom: 8px;
}