/* home.css — 首页样式 */

/* 站酷快乐体(标题用,已子集化只含首页标题/副标题所需字,2.2KB) */
@font-face {
  font-family: 'ZCOOL KuaiLe';
  src: url('../assets/fonts/ZCOOLKuaiLe-subset.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

.home {
  min-height: 100vh;
  background: linear-gradient(180deg, #E8F2FE 0%, #DCEBFA 100%);
  padding-bottom: var(--sp-7);
  /* 创建 stacking context:否则 ::before 的 z-index:-1 相对更上层上下文,
     会被画到 .home 自己的渐变背景之下,背景图永远看不见 */
  position: relative;
  z-index: 0;
}

/* 首页水彩背景图:伪元素 + fixed 承载,便于按主题单独调透明度
   (图浅蓝冷调,暗护眼主题下全强度显示会刺眼,需压暗降透明)
   z-index:-1 → 画在 .home 渐变背景之上、内容之下;渐变兜底(图加载失败/离线未缓存时) */
.home::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background: url('../assets/img/bg-home-portrait.webp') center bottom / cover no-repeat;
  pointer-events: none;
}

/* 横屏用横版图(荷花在左右下角,中间留白给内容) */
@media (orientation: landscape) {
  .home::before { background-image: url('../assets/img/bg-home-landscape.webp'); }
}

/* 护眼暖色:图偏冷调,降透明度融入暖纸底色 */
.theme-eye-protect .home::before { opacity: 0.4; }

/* 暗护眼:压暗降饱和,只留淡淡水彩纹理,不抢内容 */
.theme-eye-dark .home::before {
  opacity: 0.14;
  filter: saturate(0.5) brightness(0.6);
}

.home__hero {
  text-align: center;
  padding: var(--sp-7) var(--sp-4) var(--sp-5);
  position: relative;
}

.home__title {
  font-family: 'ZCOOL KuaiLe', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  font-size: var(--fs-3xl);
  font-weight: 400;
  color: #FFB344;                 /* 标题两侧四角星的颜色(文字由 span 各自着色) */
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}
.home__title span { line-height: 1; }

/* 标题两侧的四角星装饰:用 clip-path 画,不用 emoji
   (emoji 在各平台字形/配色不一致,且不跟随护眼主题) */
.home__title::before,
.home__title::after {
  content: '';
  width: 0.5em;
  height: 0.5em;
  background: currentColor;
  opacity: 0.75;
  clip-path: polygon(50% 0%, 61% 39%, 100% 50%, 61% 61%, 50% 100%, 39% 61%, 0% 50%, 39% 39%);
}

.home__subtitle {
  font-size: var(--fs-xs);
  color: var(--color-text-sub);
  font-family: Arial, sans-serif;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

/* 副标题胶囊:1~6年级课本同步 · 识字写字互动练习 */
.home__slogan-capsule {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--color-divider, #E5E5E5);
  border-radius: var(--radius-pill, 999px);
  color: var(--color-text);
  font-size: var(--fs-sm);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--sp-4);
}

/* ===== 当前年级胶囊(点一下可重新选年级) ===== */
.home__grade-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--color-primary, #FF7A59);
  border-radius: var(--radius-pill);
  color: var(--color-primary, #FF7A59);
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--sp-4);
}
.home__grade-chip[hidden] { display: none; }
.home__grade-chip:active { transform: scale(0.96); }

/* ===== 年级选择弹窗 ===== */
.modal--grade-picker { width: 460px; }
.gp-tip {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}
.gp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.gp-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 12px 4px;
  background: var(--color-bg, #FAF8F3);
  border: 2px solid transparent;
  border-radius: var(--radius-md, 12px);
  cursor: pointer;
  transition: all var(--t-fast, 0.15s);
}
.gp-card:hover { border-color: var(--color-primary, #FF7A59); }
.gp-card--active {
  border-color: var(--color-primary, #FF7A59);
  background: var(--color-primary-light, #FFEDE7);
}
.gp-card__label { font-size: var(--fs-base); font-weight: 700; color: var(--color-text); }
.gp-card__count { font-size: 11px; color: var(--color-text-light); }

.home__continue {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-5);
  background: var(--color-green);
  color: white;
  border-radius: var(--radius-pill);
  font-weight: 600;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--t-base);
}
.home__continue:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.home__continue--hidden { display: none; }

/* ===== 顶部工具栏(护眼模式 + 家长设置) ===== */
.home__topbar {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

/* ===== 护眼模式开关(3 状态循环:关 → 浅护眼 → 暗护眼) ===== */
.eye-toggle {
  position: relative;     /* 由 .home__topbar 承载 absolute */
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--t-base);
}
.eye-toggle:hover {
  background: white;
  transform: scale(1.08);
  border-color: var(--color-text-light);
}
/* 浅护眼模式:暖米黄 */
.eye-toggle--light {
  background: var(--color-orange);          /* #C99446 暖棕黄 */
  color: white;
  border-color: var(--color-orange);
  box-shadow: 0 2px 8px rgba(201, 148, 70, 0.3);
}
.eye-toggle--light:hover {
  background: #B5853A;
  border-color: #B5853A;
}
/* 暗护眼模式:暗紫蓝 */
.eye-toggle--dark {
  background: var(--color-primary);          /* 暗护眼下 primary 已变浅 */
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(142, 138, 255, 0.4);
}

/* 护眼模式下,主标题与继续学习按钮保留品牌色锚点 */
.theme-eye-protect .home__title,
.theme-eye-dark .home__title {
  color: var(--color-primary);
}
.theme-eye-protect .home__continue,
.theme-eye-dark .home__continue {
  background-color: var(--color-green);
  color: white;
}

/* 3 大主卡片:左侧标签+文案+箭头,右侧人物插画 */
.home__main {
  max-width: 1000px;
  margin: 0 auto var(--sp-6);
  padding: 0 var(--sp-4);
}

.main-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}
@media (max-width: 768px) {
  .main-card-grid { grid-template-columns: 1fr; }
}

.main-card {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--t-base);
  overflow: hidden;
  min-height: 176px;
}
.main-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.main-card__info {
  position: relative;
  height: 100%;
  min-height: 176px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--sp-4);
  padding-right: 46%;          /* 给右侧插画留位 */
  z-index: 1;
  text-align: left;
}
.main-card__tag {
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  color: #fff;
  font-size: var(--fs-xs);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.main-card__title {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--sp-1);
}
.main-card__lines {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--fs-xs);
  color: var(--color-text-sub);
  line-height: 1.5;
}
.main-card__go {
  margin-top: auto;             /* 推到卡片左下角 */
  width: 30px; height: 30px;
  border-radius: 50%;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; line-height: 1;
  box-shadow: var(--shadow-sm);
}
.main-card--writing .main-card__go { background: #FFB344; }
.main-card--reading .main-card__go { background: #72C878; }
.main-card--wrong   .main-card__go { background: #E8384F; }

.main-card__illus {
  position: absolute;
  right: 0;
  bottom: 0;
  height: 100%;
  width: 46%;
  object-fit: contain;
  object-position: right bottom;
  pointer-events: none;
}

.footer {
  text-align: center;
  padding: var(--sp-5) var(--sp-4);
  color: var(--color-text-sub);
  font-size: var(--fs-sm);
}
.footer__sub {
  display: inline-block;
  margin-top: var(--sp-2);
  color: var(--color-text-light);
  font-size: var(--fs-xs);
}

/* ===== 安装到桌面引导横幅 ===== */
.home__install-banner {
  max-width: 560px;
  margin: 0 auto var(--sp-5);
  padding: 0 var(--sp-4);
}
.install-banner {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--sp-3) var(--sp-4);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-divider);
}
.home__install-banner[hidden] { display: none; }

.install-banner__icon {
  font-size: 28px;
  flex-shrink: 0;
}
.install-banner__body { flex: 1; min-width: 0; }
.install-banner__title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
}
.install-banner__desc {
  font-size: var(--fs-xs);
  color: var(--color-text-sub);
  margin-top: 2px;
}
.install-banner__btn {
  flex-shrink: 0;
  padding: var(--sp-2) var(--sp-4);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 700;
  transition: all var(--t-fast);
}
.install-banner__btn:hover { background: var(--color-primary-dark); }
.install-banner__btn:active { transform: scale(0.96); }

/* ===== 横屏适配 ===== */
/* 手机横屏(高度受限): hero 压缩, 主卡片横排三列避免纵向溢出 */
@media (orientation: landscape) and (max-height: 500px) {
  .home { padding-bottom: var(--sp-4); }
  .home__hero { padding: 12px var(--sp-4) 10px; }
  .home__title { font-size: 24px; margin-bottom: 2px; }
  .home__subtitle { font-size: 11px; margin-bottom: 4px; }
  .home__slogan-capsule { font-size: 12px; padding: 4px 14px; margin-bottom: 8px; }
  .home__main { margin: 0 auto 12px; }
  .main-card-grid { grid-template-columns: repeat(3, 1fr); }
  .main-card { min-height: 128px; }
  .main-card__info { min-height: 128px; padding: 12px; padding-right: 44%; }
  .main-card__tag { font-size: 11px; padding: 2px 10px; margin-bottom: 6px; }
  .main-card__title { font-size: 17px; margin-bottom: 2px; }
  .main-card__lines { font-size: 11px; }
  .main-card__go { width: 24px; height: 24px; font-size: 18px; }
  .footer { padding: 8px; font-size: 12px; }
}
/* 平板/宽屏横屏: 放宽内容区, 减少留白 */
@media (orientation: landscape) and (min-width: 900px) and (min-height: 500px) {
  .home__hero { padding: 28px var(--sp-4) 20px; }
  .home__main { max-width: 1100px; }
}

/* ============================================================
 * 激活入口 · 顶部按钮(与护眼 / 家长设置同一行)
 * ============================================================ */
.activation-toggle {
  position: relative;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-text-sub, #888);
  border: 1px solid var(--color-border, #E5E5E5);
  border-radius: 50%;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--t-base, .2s);
}
.activation-toggle:hover {
  background: #fff;
  transform: scale(1.08);
}
.activation-toggle--active {
  background: var(--color-green, #12B886);
  color: #fff;
  border-color: var(--color-green, #12B886);
}
.activation-toggle__icon { line-height: 1; }
.activation-toggle__badge {
  position: absolute;
  top: -6px;
  right: -12px;
  padding: 1px 6px;
  background: var(--color-primary, #FF7A59);
  color: #fff;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 1px 4px rgba(0, 0, 0, .15);
}
.activation-toggle--active .activation-toggle__badge {
  background: var(--color-green, #12B886);
}

/* ===== 设置菜单 ===== */
.modal--settings { width: 420px; max-width: 92vw; }
.set-sec { margin-bottom: var(--sp-4); }
.set-sec__label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: var(--sp-2);
}
.set-eye-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.set-eye {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 4px;
  background: var(--color-bg, #F3F1EA);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-sm);
  color: var(--color-text);
  transition: all var(--t-fast);
}
.set-eye:hover { border-color: var(--color-primary); }
.set-eye--active {
  background: var(--color-primary-light, #EDF3FF);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 700;
}
.set-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  background: var(--color-bg, #F3F1EA);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  color: var(--color-text);
  transition: all var(--t-fast);
}
.set-row:hover { background: #fff; border-color: var(--color-primary); }
.set-row--locked { opacity: 0.55; }
.set-row--locked:hover { border-color: transparent; background: var(--color-bg, #F3F1EA); }
.set-row__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.set-row__title { font-size: var(--fs-base); font-weight: 600; }
.set-row__desc { font-size: var(--fs-xs); color: var(--color-text-light); }

/* ===== 首次使用说明 ===== */
.usage-guide { text-align: left; }
.usage-guide__sec { margin-bottom: var(--sp-3); }
.usage-guide__title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.usage-guide__title .hz-ic { color: var(--color-primary); }
.usage-guide__sec p {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--color-text-sub);
  margin: 0;
}
.usage-guide__note {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--color-divider);
}

/* ===== ICP 备案 ===== */
.footer__icp {
  display: inline-block;
  margin-top: var(--sp-2);
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  text-decoration: none;
}
.footer__icp:hover { color: var(--color-primary); }