/* 美育创学 · 欢迎页 Hub
 * SSOT: P1 欢迎页 · 教师/学生双视角
 * 设计参考：H5/小程序沉浸式首页 */

/* ── §W1 沉浸式顶栏（品牌融合）── */
.meiyu-welcome-header {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(16px, 3vw, 28px) clamp(18px, 3vw, 32px);
  margin: 0 auto clamp(8px, 2vw, 16px);
  max-width: var(--meiyu-stage-max, 1200px);
  /* 无圆角/无边框/无阴影 —— 与页面背景融为一体 */
}
.meiyu-welcome-header-logo {
  flex: none;
  width: clamp(36px, 4.5vw, 48px);
  height: clamp(36px, 4.5vw, 48px);
  border-radius: 12px;
  background: linear-gradient(135deg, var(--mkx-primary, #FF6B6B), #8b5cf6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.22);
}
.meiyu-welcome-header-logo img {
  width: 58%;
  height: 58%;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.15)) brightness(0) invert(1);
}
.meiyu-welcome-header-info {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  flex: 1 1 auto;
  min-width: 0;
}
.meiyu-welcome-header-eyebrow {
  font-size: clamp(11px, 1.1vw, 13px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--mkx-text, #3e2e24) 55%, #94a3b8);
  font-weight: 600;
}
.meiyu-welcome-header-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  color: var(--mkx-text, #3e2e24);
  margin: 2px 0 0;
}
.meiyu-welcome-header-right {
  flex: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.meiyu-welcome-role-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  background: color-mix(in srgb, var(--mkx-primary, #FF6B6B) 12%, white);
  color: var(--mkx-primary, #FF6B6B);
  border: 1px solid color-mix(in srgb, var(--mkx-primary, #FF6B6B) 20%, transparent);
}
.meiyu-welcome-view-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--mkx-text-soft, #6b5a4e);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(99, 102, 241, 0.15);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}
.meiyu-welcome-view-switch:hover {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(99, 102, 241, 0.35);
}

/* ── §W2 问候语区块 ── */
.meiyu-welcome-greeting {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(20px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-greeting-text {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--mkx-text, #3e2e24);
  margin: 0;
}
.meiyu-welcome-greeting-text em {
  font-style: normal;
  background: linear-gradient(135deg, var(--mkx-primary, #FF6B6B), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.meiyu-welcome-greeting-sub {
  font-size: clamp(14px, 1.4vw, 17px);
  color: var(--mkx-text-soft, #6b5a4e);
  margin: 8px 0 0;
  line-height: 1.5;
}
/* 学生端问候 —— 更大更活泼 */
.meiyu-welcome-greeting--student .meiyu-welcome-greeting-text {
  font-size: clamp(28px, 5vw, 48px);
}

/* ── §W3 快捷入口网格（教师端 4 宫格）── */
.meiyu-welcome-quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 1.5vw, 16px);
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-quick-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: clamp(16px, 2.5vw, 28px) 12px;
  border-radius: clamp(14px, 2vw, 20px);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(99, 102, 241, 0.10);
  text-decoration: none;
  color: var(--mkx-text, #3e2e24);
  transition: transform 0.12s, box-shadow 0.15s, border-color 0.15s;
  min-height: var(--meiyu-tap-min, 56px);
  text-align: center;
}
.meiyu-welcome-quick-card:hover {
  border-color: rgba(99, 102, 241, 0.25);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.08);
}
.meiyu-welcome-quick-card:active {
  transform: scale(0.97);
}
.meiyu-welcome-quick-icon {
  width: clamp(40px, 5vw, 56px);
  height: clamp(40px, 5vw, 56px);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1;
}
.meiyu-welcome-quick-icon--board { background: color-mix(in srgb, #6b7cff 12%, white); }
.meiyu-welcome-quick-icon--autogen { background: color-mix(in srgb, #10b981 12%, white); }
.meiyu-welcome-quick-icon--gallery { background: color-mix(in srgb, #f59e0b 12%, white); }
.meiyu-welcome-quick-icon--license { background: color-mix(in srgb, #8b5cf6 12%, white); }
.meiyu-welcome-quick-label {
  font-size: clamp(13px, 1.3vw, 16px);
  font-weight: 700;
}
.meiyu-welcome-quick-desc {
  font-size: clamp(11px, 1vw, 13px);
  color: var(--mkx-text-soft, #6b5a4e);
  line-height: 1.35;
}

/* ── §W4 推荐区块（横滑卡片）── */
.meiyu-welcome-section {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: clamp(12px, 1.5vw, 18px);
}
.meiyu-welcome-section-title {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 800;
  color: var(--mkx-text, #3e2e24);
  margin: 0;
}
.meiyu-welcome-section-title-icon {
  margin-right: 8px;
}
.meiyu-welcome-section-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--mkx-primary, #FF6B6B);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s;
}
.meiyu-welcome-section-more:hover { opacity: 0.75; }

/* 横滑推荐卡片 */
.meiyu-welcome-scroll {
  display: flex;
  gap: clamp(12px, 1.5vw, 18px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.meiyu-welcome-scroll::-webkit-scrollbar { display: none; }

.meiyu-welcome-rec-card {
  flex: 0 0 clamp(260px, 30vw, 340px);
  scroll-snap-align: start;
  border-radius: clamp(14px, 2vw, 20px);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(99, 102, 241, 0.08);
  text-decoration: none;
  color: inherit;
  transition: transform 0.12s, box-shadow 0.15s;
}
.meiyu-welcome-rec-card:hover {
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}
.meiyu-welcome-rec-card:active {
  transform: scale(0.98);
}
.meiyu-welcome-rec-art {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.meiyu-welcome-rec-body {
  padding: clamp(12px, 1.5vw, 18px);
}
.meiyu-welcome-rec-track {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 6px;
}
.meiyu-welcome-rec-track--ai {
  background: color-mix(in srgb, var(--meiyu-track-ai, #6b7cff) 12%, white);
  color: var(--meiyu-track-ai, #6b7cff);
}
.meiyu-welcome-rec-track--traditional {
  background: color-mix(in srgb, var(--meiyu-track-traditional, #10b981) 12%, white);
  color: var(--meiyu-track-traditional, #10b981);
}
.meiyu-welcome-rec-title {
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 700;
  color: var(--mkx-text, #3e2e24);
  margin: 0 0 4px;
  line-height: 1.35;
}
.meiyu-welcome-rec-desc {
  font-size: clamp(12px, 1.1vw, 14px);
  color: var(--mkx-text-soft, #6b5a4e);
  margin: 0;
  line-height: 1.45;
}

/* ── §W5 学生端特色区块 ── */
/* 特色大横卡 */
.meiyu-welcome-featured {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-featured-card {
  display: flex;
  gap: clamp(16px, 2vw, 24px);
  border-radius: clamp(18px, 2.5vw, 28px);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(107, 124, 255, 0.08), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(107, 124, 255, 0.15);
  text-decoration: none;
  color: inherit;
  transition: transform 0.12s, box-shadow 0.15s;
}
.meiyu-welcome-featured-card:hover {
  box-shadow: 0 12px 32px rgba(107, 124, 255, 0.12);
}
.meiyu-welcome-featured-card:active {
  transform: scale(0.99);
}
.meiyu-welcome-featured-art {
  flex: 0 0 clamp(140px, 20vw, 220px);
  min-height: clamp(120px, 18vw, 180px);
  object-fit: cover;
}
.meiyu-welcome-featured-body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(14px, 2vw, 24px) clamp(14px, 2vw, 24px) clamp(14px, 2vw, 24px) 0;
}
.meiyu-welcome-featured-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--meiyu-track-ai, #6b7cff);
  margin-bottom: 8px;
}
.meiyu-welcome-featured-title {
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 800;
  color: var(--mkx-text, #3e2e24);
  margin: 0 0 6px;
  line-height: 1.3;
}
.meiyu-welcome-featured-desc {
  font-size: clamp(13px, 1.3vw, 16px);
  color: var(--mkx-text-soft, #6b5a4e);
  margin: 0 0 12px;
  line-height: 1.5;
}
.meiyu-welcome-featured-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 700;
  color: var(--mkx-primary, #FF6B6B);
}

/* 最近在学（学生端） */
.meiyu-welcome-resume {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-resume-card {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 20px);
  padding: clamp(14px, 2vw, 22px);
  border-radius: clamp(14px, 2vw, 20px);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(99, 102, 241, 0.10);
  text-decoration: none;
  color: inherit;
  transition: transform 0.12s, box-shadow 0.15s;
}
.meiyu-welcome-resume-card:hover {
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}
.meiyu-welcome-resume-card:active {
  transform: scale(0.98);
}
.meiyu-welcome-resume-thumb {
  flex: none;
  width: clamp(56px, 8vw, 80px);
  height: clamp(56px, 8vw, 80px);
  border-radius: 14px;
  object-fit: cover;
}
.meiyu-welcome-resume-info {
  flex: 1 1 auto;
  min-width: 0;
}
.meiyu-welcome-resume-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--mkx-text-soft, #6b5a4e);
  margin-bottom: 4px;
}
.meiyu-welcome-resume-title {
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 700;
  color: var(--mkx-text, #3e2e24);
  margin: 0 0 4px;
}
.meiyu-welcome-resume-progress {
  font-size: 13px;
  color: var(--mkx-text-soft, #6b5a4e);
}
.meiyu-welcome-resume-btn {
  flex: none;
  min-height: var(--meiyu-tap-min-compact, 44px);
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--mkx-primary, #FF6B6B), #8b5cf6);
  border: none;
  text-decoration: none;
  transition: transform 0.1s, box-shadow 0.15s;
}
.meiyu-welcome-resume-btn:hover {
  box-shadow: 0 4px 16px rgba(255, 107, 107, 0.3);
}
.meiyu-welcome-resume-btn:active {
  transform: scale(0.95);
}

/* ── §W6 底部 CTA 区（学生端）── */
.meiyu-welcome-cta-bar {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.meiyu-welcome-cta-primary {
  flex: 1 1 200px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--meiyu-tap-min, 56px);
  padding: 14px 28px;
  border-radius: 16px;
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--mkx-primary, #FF6B6B), #8b5cf6);
  text-decoration: none;
  border: none;
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.25);
  transition: transform 0.1s, box-shadow 0.15s;
}
.meiyu-welcome-cta-primary:hover {
  box-shadow: 0 12px 32px rgba(255, 107, 107, 0.35);
}
.meiyu-welcome-cta-primary:active {
  transform: scale(0.97);
}
.meiyu-welcome-cta-secondary {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--meiyu-tap-min, 56px);
  padding: 14px 28px;
  border-radius: 16px;
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 700;
  color: var(--mkx-text, #3e2e24);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(99, 102, 241, 0.15);
  text-decoration: none;
  transition: transform 0.1s, background 0.15s;
}
.meiyu-welcome-cta-secondary:hover {
  background: rgba(255, 255, 255, 0.92);
}
.meiyu-welcome-cta-secondary:active {
  transform: scale(0.97);
}

/* ── §W7 教师端班级动态摘要 ── */
.meiyu-welcome-activity {
  max-width: var(--meiyu-stage-max, 1200px);
  margin: 0 auto clamp(24px, 3vw, 36px);
  padding: 0 clamp(18px, 3vw, 32px);
}
.meiyu-welcome-activity-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.meiyu-welcome-activity-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  color: var(--mkx-text, #3e2e24);
}
.meiyu-welcome-activity-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mkx-primary, #FF6B6B);
}
.meiyu-welcome-activity-time {
  margin-left: auto;
  font-size: 12px;
  color: var(--mkx-text-soft, #6b5a4e);
  white-space: nowrap;
}

/* ── §W8 底部 Tab 栏 ── */
#meiyu-welcome-root .meiyu-bottom-tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 800;
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  height: clamp(56px, 8vh, 72px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(99, 102, 241, 0.10);
}
#meiyu-welcome-root .meiyu-bottom-tab {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: var(--mkx-text-soft, #6b5a4e);
  font-size: 11px;
  font-weight: 600;
  transition: color 0.15s;
  min-height: var(--meiyu-tap-min-compact, 44px);
  -webkit-tap-highlight-color: transparent;
}
#meiyu-welcome-root .meiyu-bottom-tab:hover {
  color: var(--mkx-primary, #FF6B6B);
}
#meiyu-welcome-root .meiyu-bottom-tab.active {
  color: var(--mkx-primary, #FF6B6B);
}
#meiyu-welcome-root .meiyu-bottom-tab-icon {
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1;
  transition: transform 0.15s;
}
#meiyu-welcome-root .meiyu-bottom-tab:active .meiyu-bottom-tab-icon {
  transform: scale(0.88);
}
#meiyu-welcome-root .meiyu-bottom-tab-label {
  line-height: 1;
}

/* 底部 Tab 占位（防止内容被 fixed 底栏遮挡） */
.meiyu-tabbar-spacer {
  height: calc(clamp(56px, 8vh, 72px) + env(safe-area-inset-bottom, 0px) + 12px);
}

/* ── §W9 响应式适配 ── */
@media (max-width: 768px) {
  .meiyu-welcome-quick-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .meiyu-welcome-featured-card {
    flex-direction: column;
  }
  .meiyu-welcome-featured-art {
    flex: none;
    width: 100%;
    min-height: 140px;
    max-height: 180px;
  }
  .meiyu-welcome-featured-body {
    padding: clamp(14px, 2vw, 24px);
  }
  .meiyu-welcome-header-right {
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .meiyu-welcome-quick-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .meiyu-welcome-rec-card {
    flex: 0 0 85%;
  }
}

/* ── §W10 横竖屏响应式适配 — Phase 9 (2026-06-05) ── */
@media (orientation: landscape) and (min-height: 500px) {
  /* 横屏时底部 Tab Bar 高度略微减小，节省纵向空间 */
  #meiyu-welcome-root .meiyu-bottom-tabbar {
    height: clamp(48px, 6vh, 56px);
  }
  #meiyu-welcome-root .meiyu-tabbar-spacer {
    height: calc(clamp(48px, 6vh, 56px) + env(safe-area-inset-bottom, 0px) + 12px);
  }
  #meiyu-welcome-root .meiyu-bottom-tab {
    font-size: 12px;
    padding: 4px 0;
  }
  #meiyu-welcome-root .meiyu-bottom-tab-icon {
    font-size: clamp(22px, 3vw, 28px);
  }
}

@media (orientation: landscape) and (min-width: 768px) {
  /* 横屏大屏：欢迎页快速入口网格优化 */
  .meiyu-welcome-quick-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }
  .meiyu-welcome-rec-scroll {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
    overflow-x: visible;
  }
  .meiyu-welcome-rec-card {
    flex: none;
    width: auto;
  }
}

@media (orientation: landscape) and (min-width: 1024px) {
  /* 横屏超大屏：特色课程卡片横向布局 */
  .meiyu-welcome-featured-card {
    flex-direction: row;
    gap: 24px;
  }
  .meiyu-welcome-featured-art {
    flex: 0 0 45%;
    max-height: none;
  }
}