/**
 * 探芽园 Quorva - 首页与模块样式 (home.css)
 * 探索成长感 · 叠层翻卡 · 温暖手绘探索氛围
 */

/* ==========================================================================
   1. 页面骨架与头部导航 (Header)
   ========================================================================== */

.app-wrapper {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 4vw 40px;
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1;
}

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 16px;
  gap: 16px;
}

.brand-badge {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink-strong);
}

.brand-en {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-ink-subtle);
  letter-spacing: 0.04em;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 本地档案状态胶囊 (PRD [KNOWN] 首发仅本机档案，无云账号) */
.profile-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.65);
  border: 1.5px solid rgba(45, 38, 20, 0.18);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink-strong);
  transition: var(--transition-fast);
  backdrop-filter: blur(8px);
}

.profile-chip:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--color-accent-coral);
  box-shadow: var(--shadow-sm);
}

.profile-chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #2e8b57;
  box-shadow: 0 0 0 2px rgba(46, 139, 87, 0.25);
}

/* ==========================================================================
   2. 首页主体布局 (Hero Grid)
   ========================================================================== */

main.home-main {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 4vw;
  align-items: start;
  padding-top: 16px;
  position: relative;
}

/* 左侧：品牌主题、标题与吉祥物路牌 */
.hero-column {
  display: flex;
  flex-direction: column;
  padding-right: 1vw;
  position: relative;
  z-index: 2;
}

.hero-motto-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: #7a461e;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.hero-motto-tag .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: currentColor;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(44px, 5.2vw, 76px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-ink-strong);
  margin-bottom: 24px;
}

.hero-slogan-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 32px;
}

.hero-slogan-zh {
  font-size: 17px;
  font-weight: 500;
  color: var(--color-ink-strong);
  letter-spacing: 0.02em;
}

.hero-slogan-en {
  font-size: 14px;
  color: var(--color-ink-subtle);
  font-weight: 400;
  letter-spacing: 0.03em;
}

/* 吉祥物与探索路牌区域 (Mascot & Signpost) */
.adventure-illustration-box {
  margin-top: 8px;
  max-width: 480px;
  display: flex;
  align-items: flex-end;
  gap: 16px;
  user-select: none;
}

.mascot-svg-wrap {
  flex-shrink: 0;
  width: 140px;
  filter: drop-shadow(0 10px 18px rgba(78, 62, 18, 0.15));
  animation: sprout-bob 4s ease-in-out infinite alternate;
}

@keyframes sprout-bob {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-6px) rotate(1.5deg); }
}

.signpost-banner {
  background: rgba(255, 255, 255, 0.72);
  border: 1.5px solid rgba(133, 114, 46, 0.25);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  backdrop-filter: blur(6px);
  position: relative;
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
}

.signpost-banner::before {
  content: "";
  position: absolute;
  left: -8px;
  bottom: 16px;
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-right: 8px solid rgba(255, 255, 255, 0.72);
}

.signpost-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink-strong);
  display: flex;
  align-items: center;
  gap: 6px;
}

.signpost-sub {
  font-size: 12px;
  color: var(--color-ink-subtle);
  margin-top: 2px;
}

/* ==========================================================================
   3. 右侧：顶部直达导航 (Fixed Shortcuts) & 叠层翻卡堆 (Deck)
   ========================================================================== */

.action-column {
  display: flex;
  flex-direction: column;
  position: relative;
}

/* 顶部直达导航：固定顺序 故事小岛 · 诗芽 · 认字 · 观察 */
nav.direct-shortcuts {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
  padding: 6px 0 28px;
  border-bottom: 1.5px solid rgba(128, 117, 34, 0.28);
  margin-bottom: 36px;
  width: 100%;
}

.nav-shortcut-btn {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink-strong);
  padding: 8px 2px;
  position: relative;
  letter-spacing: 0.03em;
  transition: var(--transition-fast);
}

.nav-shortcut-btn::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: transparent;
  transition: var(--transition-fast);
}

.nav-shortcut-btn:hover {
  color: var(--color-accent-coral);
}

.nav-shortcut-btn:hover::after {
  background-color: var(--color-accent-coral);
}

/* 叠层翻卡舞台 (Deck Stage) */
.deck-stage {
  position: relative;
  width: 100%;
  max-width: 540px;
  height: 440px;
  margin: 0 auto;
  perspective: 1200px;
  user-select: none;
}

/* 卡片容器 */
.deck-cards-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

/* 单张任务卡片基础样式 */
.quest-card {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: transform 420ms var(--ease-spring), opacity 320ms var(--ease-smooth), filter 320ms ease;
  will-change: transform, opacity;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* 3D 叠层层级位置 (Stack Layers) */
.quest-card.card-layer-0 {
  /* 前端活跃卡 */
  z-index: 10;
  transform: translate3d(0, 0, 0) rotate(1deg);
  opacity: 1;
  pointer-events: auto;
  filter: none;
}

.quest-card.card-layer-1 {
  /* 第二层卡片：右偏倾斜 */
  z-index: 5;
  transform: translate3d(18px, 12px, -40px) rotate(4.8deg);
  opacity: 0.92;
  pointer-events: none;
  filter: brightness(0.94);
}

.quest-card.card-layer-2 {
  /* 第三层卡片：左偏倾斜 */
  z-index: 2;
  transform: translate3d(-14px, 20px, -80px) rotate(-4.2deg);
  opacity: 0.82;
  pointer-events: none;
  filter: brightness(0.88);
}

/* 卡片翻出与翻入过渡动效 */
.quest-card.flipping-out-next {
  transform: translate3d(110%, 15px, 20px) rotate(12deg) !important;
  opacity: 0 !important;
}

.quest-card.flipping-out-prev {
  transform: translate3d(-110%, 15px, 20px) rotate(-12deg) !important;
  opacity: 0 !important;
}

/* 卡片封面设计 (Cover Art) */
.card-cover {
  flex: 1;
  padding: 36px 36px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

/* 装饰性背景环形同心圆 */
.card-cover::before {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 220px;
  height: 220px;
  border: 1.5px dashed rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.card-cover::after {
  content: "";
  position: absolute;
  right: 15px;
  bottom: 15px;
  width: 130px;
  height: 130px;
  border: 1.5px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.card-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.card-cover-main {
  position: relative;
  z-index: 2;
  margin: 16px 0;
}

.card-cover-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 3.6vw, 46px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

/* 认字模块的特色大字 */
.card-cover-glyph {
  font-family: var(--font-serif);
  font-size: clamp(72px, 8vw, 110px);
  font-weight: 500;
  line-height: 1;
  margin-bottom: 6px;
}

.card-cover-hint {
  font-size: 14px;
  opacity: 0.88;
  margin-top: 10px;
  letter-spacing: 0.02em;
}

/* 卡片底部行动栏 (Bottom Bar) */
.card-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.08);
  position: relative;
  z-index: 2;
}

.card-module-name {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.card-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  transition: var(--transition-fast);
}

.card-action-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

/* 翻卡控制器 (Deck Controls) */
.deck-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 28px;
  width: 100%;
}

.deck-arrow-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1.5px solid rgba(128, 117, 34, 0.4);
  background: rgba(255, 255, 255, 0.5);
  color: var(--color-ink-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  transition: var(--transition-fast);
}

.deck-arrow-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--color-ink-strong);
  box-shadow: var(--shadow-sm);
}

.deck-counter {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-ink-subtle);
  min-width: 50px;
  text-align: center;
}

/* ==========================================================================
   4. 模块轻量占位页与详情视图 (#module-view)
   ========================================================================== */

section#module-view {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 0 60px;
}

.module-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.module-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink-strong);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.65);
  border: 1.5px solid rgba(45, 38, 20, 0.15);
  transition: var(--transition-fast);
}

.module-back-btn:hover {
  background: #ffffff;
  border-color: var(--color-accent-coral);
  color: var(--color-accent-coral);
  box-shadow: var(--shadow-sm);
}

.module-card-canvas {
  background: var(--color-canvas-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(45, 38, 20, 0.08);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.module-canvas-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1.5px dashed rgba(45, 38, 20, 0.12);
  padding-bottom: 20px;
}

.module-canvas-badge {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
}

.module-canvas-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 42px);
  color: var(--color-ink-strong);
}

.module-canvas-meta {
  font-size: 14px;
  color: var(--color-ink-subtle);
}

/* 故事小岛：阅读器演示 */
.story-reader-box {
  background: #fff9ed;
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid #ebd9b8;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.story-reader-text {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.8;
  color: var(--color-ink-strong);
}

.story-scene-hint {
  font-size: 13px;
  color: #8c6f4a;
  background: rgba(140, 111, 74, 0.08);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.story-reader-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  flex-wrap: wrap;
  gap: 12px;
}

.reader-btn-group {
  display: flex;
  gap: 12px;
}

.reader-action-btn {
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  background: var(--color-ink-strong);
  color: #ffffff;
  transition: var(--transition-fast);
}

.reader-action-btn.secondary {
  background: transparent;
  color: var(--color-ink-strong);
  border: 1.5px solid rgba(45, 38, 20, 0.2);
}

/* 诗芽：古诗卡片演示 */
.poem-display-box {
  background: #f4faee;
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid #d4e8cb;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.poem-line {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 6px 0;
}

.poem-pinyin {
  font-size: 13px;
  color: #5c7e63;
  letter-spacing: 0.06em;
}

.poem-text {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.5vw, 36px);
  color: #1f4327;
  letter-spacing: 0.12em;
}

.poem-audio-btn {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: #466850;
  color: #ffffff;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
}

/* 认字：汉字互动演示 */
.words-display-box {
  background: #f0f7fd;
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid #c9e0f6;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.words-hero-glyph {
  font-family: var(--font-serif);
  font-size: clamp(80px, 12vw, 120px);
  color: #1c4b72;
  line-height: 1;
}

.words-meaning-card {
  max-width: 500px;
  text-align: center;
  font-size: 16px;
  color: var(--color-ink-strong);
  line-height: 1.6;
}

.words-options-grid {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
}

.words-option-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  background: #ffffff;
  border: 2px solid #bcdbf7;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  color: #1c4b72;
  transition: var(--transition-fast);
}

.words-option-btn:hover {
  border-color: #335b7f;
  background: #f7fbff;
}

.words-option-btn.selected-correct {
  border-color: #2e8b57;
  background: #eefaf3;
  color: #1d693e;
}

.words-feedback-text {
  font-size: 14px;
  font-weight: 500;
  min-height: 22px;
}

/* 家长观察：数据仪表盘 */
.observation-dashboard {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.obs-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.obs-metric-card {
  background: #fcfbf8;
  border: 1px solid rgba(45, 38, 20, 0.1);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.obs-metric-label {
  font-size: 13px;
  color: var(--color-ink-subtle);
  font-weight: 500;
}

.obs-metric-val {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-ink-strong);
}

.obs-metric-foot {
  font-size: 12px;
  color: var(--color-ink-faint);
}

.obs-timeline-card {
  background: #ffffff;
  border: 1px solid rgba(45, 38, 20, 0.1);
  border-radius: var(--radius-md);
  padding: 24px;
}

.obs-timeline-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.obs-timeline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.obs-timeline-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #fbfaf6;
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.obs-item-badge {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 600;
}

.obs-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px dashed rgba(45, 38, 20, 0.12);
  flex-wrap: wrap;
  gap: 12px;
}

.obs-reset-btn {
  font-size: 13px;
  color: #a3321d;
  padding: 8px 14px;
  border: 1px solid rgba(163, 50, 29, 0.3);
  border-radius: var(--radius-pill);
  transition: var(--transition-fast);
}

.obs-reset-btn:hover {
  background: #fef2f0;
  border-color: #a3321d;
}

/* ==========================================================================
   5. 弹窗组件 (Modal Dialog)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(35, 39, 32, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}

.modal-dialog {
  background: var(--color-canvas-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: modal-enter 220ms var(--ease-spring);
}

@keyframes modal-enter {
  0% { transform: scale(0.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink-strong);
}

.modal-body {
  font-size: 14px;
  color: var(--color-ink-subtle);
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

.modal-btn-confirm {
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  background: var(--color-accent-coral);
  color: #ffffff;
}

.modal-btn-cancel {
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--color-ink-subtle);
  border: 1px solid rgba(45, 38, 20, 0.15);
}

/* ==========================================================================
   6. 底部信息栏 (Footer)
   ========================================================================== */

footer.site-footer {
  margin-top: auto;
  padding-top: 40px;
  border-top: 1px solid rgba(128, 117, 34, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-ink-subtle);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* ==========================================================================
   7. 响应式布局 (Responsive Media Queries)
   ========================================================================== */

@media (max-width: 1024px) {
  main.home-main {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-column {
    padding-right: 0;
  }

  nav.direct-shortcuts {
    justify-content: flex-start;
    gap: 22px;
    margin-bottom: 28px;
  }

  .deck-stage {
    max-width: 480px;
    height: 400px;
  }
}

@media (max-width: 680px) {
  .app-wrapper {
    padding: 0 5vw 30px;
  }

  header.site-header {
    padding: 18px 0 12px;
  }

  .brand-title {
    font-size: 22px;
  }

  .hero-title {
    font-size: 38px;
  }

  nav.direct-shortcuts {
    gap: 18px;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 16px;
    scrollbar-width: none;
  }

  nav.direct-shortcuts::-webkit-scrollbar {
    display: none;
  }

  .nav-shortcut-btn {
    font-size: 14px;
  }

  .deck-stage {
    width: 100%;
    height: 380px;
  }

  .card-cover {
    padding: 24px;
  }

  .card-cover-title {
    font-size: 30px;
  }

  .card-bottom-bar {
    padding: 16px 20px;
  }

  .card-module-name {
    font-size: 18px;
  }

  .card-action-btn {
    padding: 8px 16px;
    font-size: 13px;
  }

  .module-card-canvas {
    padding: 24px 20px;
  }

  footer.site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}