/* ============================================================
   CppLearner · 代码补全模块样式
   与知识点模块共享主题变量,在 style.css 之后加载
   ============================================================ */

/* ============================================
   视图切换 — 整体布局
   ============================================ */

.cc-layout {
  max-width: 1600px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px 1fr 420px;
  min-height: calc(100vh - var(--header-h));
  position: relative;
}

/* ============================================
   左侧题目列表
   ============================================ */
.cc-sidebar {
  border-right: 1px solid var(--paper-line);
  padding: 32px 0 32px 32px;
  position: sticky;
  top: var(--header-h);
  align-self: start;
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.cc-sidebar-title {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-mute);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cc-chapter-label {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--vermilion);
  letter-spacing: 2px;
  margin: 18px 0 10px 4px;
  font-weight: 500;
}

.cc-problem-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-right: 16px;
}

.cc-problem-item {
  padding: 12px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 13.5px;
  color: var(--ink-soft);
  user-select: none;
  position: relative;
  border: 1px solid transparent;
}

.cc-problem-item:hover {
  background: var(--paper-warm);
  color: var(--ink-deep);
}

.cc-problem-item.active {
  background: var(--jade-glow);
  color: var(--jade);
  font-weight: 500;
  border-color: var(--jade);
}

.cc-problem-item.active::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--vermilion);
  border-radius: 0 2px 2px 0;
}

.cc-problem-num {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--vermilion);
  min-width: 22px;
  line-height: 1.5;
}

.cc-problem-name {
  flex: 1;
  line-height: 1.5;
}

.cc-problem-item.pending {
  opacity: 0.5;
}
.cc-problem-item.pending .cc-problem-name::after {
  content: ' · 待录入';
  color: var(--gold);
  font-size: 11px;
  font-weight: 400;
}

.cc-problem-status {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.cc-problem-status.passed { background: var(--jade); }
.cc-problem-status.failed { background: var(--vermilion); }

/* ============================================
   中间题目主区
   ============================================ */
.cc-main {
  padding: 32px 40px 80px;
  max-width: 880px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* — 题目头 — */
.cc-problem-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--jade);
  position: relative;
}

.cc-problem-header::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--vermilion);
}

.cc-problem-tag-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.cc-meta-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.5px;
}

.cc-meta-badge.chapter {
  background: var(--vermilion-bg);
  color: var(--vermilion);
}
.cc-meta-badge.difficulty {
  background: var(--jade-glow);
  color: var(--jade);
}
.cc-meta-badge.tag {
  background: var(--paper-warm);
  color: var(--ink-soft);
  border: 1px solid var(--paper-line);
}

.cc-problem-title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--ink-deep);
  line-height: 1.2;
  margin-bottom: 8px;
}

/* — 描述区 — */
.cc-desc-section {
  margin-bottom: 24px;
  background: var(--paper-warm);
  border-left: 4px solid var(--gold);
  padding: 18px 24px;
  border-radius: 0 6px 6px 0;
}

.cc-desc-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.cc-desc-section p {
  margin: 6px 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-deep);
}

/* — 代码区:固定代码段 + 填空 textarea 交替 — */
.cc-code-frame {
  margin: 24px 0;
  background: var(--code-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--code-border);
  box-shadow: 0 2px 12px rgba(26,41,37,0.08);
}

.cc-code-frame-header {
  background: rgba(0,0,0,0.25);
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.cc-code-lang {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(196, 221, 210, 0.7);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.cc-code-actions {
  display: flex;
  gap: 6px;
}

.cc-btn-mini {
  background: rgba(196,221,210,0.1);
  color: rgba(196,221,210,0.9);
  border: 1px solid rgba(196,221,210,0.2);
  padding: 3px 12px;
  font-size: 11px;
  border-radius: 3px;
  cursor: pointer;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  transition: all 0.2s;
}

.cc-btn-mini:hover {
  background: rgba(196,221,210,0.2);
  color: var(--paper);
}

/* — 固定代码段(预览) — */
.cc-code-fixed {
  padding: 0;
  margin: 0;
}

.cc-code-fixed pre {
  margin: 0;
  padding: 14px 20px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: #c4ddd2;          /* 浅色,表示"只读" */
  opacity: 0.92;
  white-space: pre;
  overflow-x: auto;
}

/* — 填空区(可编辑) — */
.cc-gap-wrap {
  position: relative;
  margin: 2px 16px;
  border: 2px dashed var(--vermilion-soft);
  border-radius: 6px;
  background: rgba(184,65,44,0.08);
  transition: all 0.2s;
}

.cc-gap-wrap:focus-within {
  border-color: var(--vermilion);
  background: rgba(184,65,44,0.12);
  box-shadow: 0 0 0 3px rgba(184,65,44,0.15);
}

.cc-gap-label {
  position: absolute;
  top: -10px;
  left: 14px;
  background: var(--vermilion);
  color: white;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 3px;
  letter-spacing: 0.5px;
  z-index: 1;
}

.cc-gap-textarea {
  width: 100%;
  background: transparent !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: #faf6ee !important;
  font-family: var(--font-mono) !important;
  font-size: 13.5px !important;
  line-height: 1.7 !important;
  padding: 14px 20px !important;
  resize: vertical;
  display: block;
  white-space: pre;
  tab-size: 4;
  -moz-tab-size: 4;
  caret-color: var(--vermilion-soft);
}

.cc-gap-textarea::placeholder {
  color: rgba(255,255,255,0.3);
  font-style: italic;
}

.cc-gap-textarea::selection {
  background: rgba(184,65,44,0.4);
}

/* — 提交栏 — */
.cc-action-bar {
  position: sticky;
  bottom: 0;
  margin: 24px -40px -80px;
  padding: 18px 40px 22px;
  background: linear-gradient(to top, var(--paper) 70%, rgba(250,246,238,0));
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  gap: 16px;
}

.cc-action-left {
  display: flex;
  gap: 8px;
}

.cc-btn {
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 22px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cc-btn-primary {
  background: var(--jade);
  color: var(--paper);
  box-shadow: 0 2px 8px rgba(45,90,74,0.25);
}
.cc-btn-primary:hover {
  background: var(--jade-soft);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45,90,74,0.3);
}
.cc-btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.cc-btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--paper-line);
}
.cc-btn-ghost:hover {
  background: var(--paper-warm);
  color: var(--ink-deep);
}

.cc-btn-warn {
  background: var(--vermilion-bg);
  color: var(--vermilion);
  border: 1px solid var(--vermilion-soft);
}
.cc-btn-warn:hover {
  background: var(--vermilion);
  color: var(--paper);
}

/* ============================================
   右侧测试面板
   ============================================ */
.cc-test-panel {
  border-left: 1px solid var(--paper-line);
  padding: 32px 24px 32px;
  position: sticky;
  top: var(--header-h);
  align-self: start;
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.cc-test-title {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-mute);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

/* — 单个测试用例卡片 — */
.cc-test-case {
  margin-bottom: 14px;
  background: var(--paper-warm);
  border: 1px solid var(--paper-line);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.25s;
}

.cc-test-case.passed {
  border-color: var(--jade);
  box-shadow: 0 0 0 1px var(--jade);
}
.cc-test-case.failed {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 1px var(--vermilion);
}
.cc-test-case.running {
  border-color: var(--gold);
  animation: ccPulse 1.2s ease-in-out infinite;
}

@keyframes ccPulse {
  0%, 100% { box-shadow: 0 0 0 1px var(--gold), 0 0 8px rgba(164,123,60,0.3); }
  50%      { box-shadow: 0 0 0 1px var(--gold), 0 0 16px rgba(164,123,60,0.5); }
}

.cc-test-head {
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  cursor: pointer;
  user-select: none;
  background: rgba(255,255,255,0.4);
}

.cc-test-head-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--ink-deep);
}

.cc-test-status-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-serif);
  background: var(--ink-mute);
  color: var(--paper);
  flex-shrink: 0;
}

.passed .cc-test-status-icon { background: var(--jade); }
.passed .cc-test-status-icon::before { content: '✓'; }

.failed .cc-test-status-icon { background: var(--vermilion); }
.failed .cc-test-status-icon::before { content: '✗'; }

.running .cc-test-status-icon { background: var(--gold); }
.running .cc-test-status-icon::before { content: '…'; }

.cc-test-head-right {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-mute);
}

.cc-test-body {
  padding: 0 14px 12px;
  display: none;
}
.cc-test-case.expanded .cc-test-body {
  display: block;
}

.cc-test-section {
  margin: 10px 0 0;
}
.cc-test-section-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.cc-test-section pre {
  background: rgba(0,0,0,0.05);
  border: 1px solid var(--paper-line);
  padding: 8px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink-deep);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 180px;
  overflow-y: auto;
  margin: 0;
}

.cc-test-section.diff pre {
  background: var(--vermilion-bg);
  border-color: var(--vermilion-soft);
}

/* — 整体测试统计 — */
.cc-test-summary {
  background: var(--jade-glow);
  border: 1px solid var(--jade);
  border-radius: 6px;
  padding: 14px 16px;
  margin-bottom: 18px;
  display: none;
}

.cc-test-summary.show { display: block; }

.cc-test-summary.all-pass {
  background: var(--jade-glow);
  border-color: var(--jade);
}
.cc-test-summary.has-fail {
  background: var(--vermilion-bg);
  border-color: var(--vermilion);
}

.cc-test-summary-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}
.cc-test-summary.all-pass .cc-test-summary-title { color: var(--jade); }
.cc-test-summary.has-fail .cc-test-summary-title { color: var(--vermilion); }

.cc-test-summary-desc {
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.6;
}

/* — 提示框 — */
.cc-hint-box {
  margin-top: 24px;
  padding: 14px 16px;
  background: var(--gold-bg);
  border-left: 3px solid var(--gold);
  border-radius: 4px;
}

.cc-hint-title {
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.cc-hint-content {
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.7;
}
.cc-hint-content ul, .cc-hint-content ol {
  padding-left: 18px;
  margin: 4px 0;
}
.cc-hint-content li { margin: 3px 0; }

/* — 输出/对比的工具 — */
.cc-compare-modal {
  position: fixed;
  inset: 0;
  background: rgba(26,41,37,0.6);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.cc-compare-modal.show { display: flex; }

.cc-compare-box {
  background: var(--paper);
  border-radius: 10px;
  max-width: 1100px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  overflow: hidden;
}

.cc-compare-head {
  padding: 16px 24px;
  border-bottom: 1px solid var(--paper-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cc-compare-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-deep);
}

.cc-compare-close {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--paper-warm);
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--ink-soft);
}
.cc-compare-close:hover { background: var(--paper-line); }

.cc-compare-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.cc-compare-pre {
  background: var(--code-bg);
  color: #c4ddd2;
  padding: 18px 22px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre;
  overflow-x: auto;
  margin: 0;
}

/* ============================================
   待录入页面
   ============================================ */
.cc-pending {
  text-align: center;
  padding: 80px 40px;
  color: var(--ink-mute);
}
.cc-pending-icon {
  font-size: 56px;
  opacity: 0.5;
  margin-bottom: 18px;
}
.cc-pending-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--jade);
  margin-bottom: 10px;
}
.cc-pending-text {
  font-size: 14px;
  line-height: 1.9;
  max-width: 480px;
  margin: 0 auto;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1280px) {
  .cc-test-panel { display: none; }
  .cc-layout { grid-template-columns: 280px 1fr; }
}

@media (max-width: 900px) {
  .cc-layout { grid-template-columns: 1fr; }
  .cc-main { padding: 24px; padding-bottom: 88px; }
  .cc-action-bar { margin: 24px -24px -80px; padding: 18px 24px; }

  /* cc-sidebar 变成抽屉 */
  .cc-sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    height: calc(100vh - var(--header-h));
    width: 288px;
    z-index: 250;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 24px 0 24px 24px;
    box-shadow: 4px 0 24px rgba(26,41,37,0.15);
    border-right: none;
  }

  .cc-sidebar.drawer-open {
    transform: translateX(0);
  }

  .cc-sidebar .cc-problem-item.active::before {
    left: -24px;
  }
}

/* ============================================
   一些已有 nav-link 的小调整
   ============================================ */
.nav-link.disabled-soft {
  /* "代码补全" 已开放,不再显示 disabled 样式 */
}