/*
 * 首页四张指标卡重新设计（在 theme-glass.css 之后加载）
 * 结构：图标块 + 标题 + 状态标签 / 大数字 / 一句话提示 + 动作 / 进度条 / 淡化的 7 日趋势
 * 删掉 index.html 里的引用即可还原。
 */

/* 每张卡的主色（RGB，便于调透明度）和深色文字 */
body .metric-card.accent-green  { --mc-rgb: 52, 199, 89;   --mc-ink: #1f7a3a; }
body .metric-card.accent-orange { --mc-rgb: 255, 149, 0;   --mc-ink: #a35a00; }
body .metric-card.accent-blue   { --mc-rgb: 0, 122, 255;   --mc-ink: #0058bd; }
body .metric-card.accent-purple { --mc-rgb: 175, 82, 222;  --mc-ink: #7a2fa3; }

/* ---------- 卡片外观 ---------- */
body .metric-grid .metric-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 18px 18px 14px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  /* 去掉原来顶部的彩色粗线，改为右上角一团柔和的主色光 */
  border-top: 1px solid rgba(255, 255, 255, 0.7);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(var(--mc-rgb), 0.16) 0, transparent 60%),
    rgba(255, 255, 255, 0.55);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 1px 2px rgba(30, 30, 60, 0.04),
    0 8px 24px rgba(30, 30, 60, 0.06);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

body .metric-grid .metric-card::before,
body .metric-grid .metric-card::after {
  display: none;
}

body .metric-grid .metric-card:hover {
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 2px 4px rgba(30, 30, 60, 0.05),
    0 14px 32px rgba(var(--mc-rgb), 0.18);
}

body .metric-grid .metric-card:focus-visible {
  outline: 3px solid rgba(var(--mc-rgb), 0.55);
  outline-offset: 2px;
}

/* ---------- 顶部：图标块 + 标题 + 状态标签 ---------- */
body .metric-card .metric-top {
  justify-content: flex-start;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--g-text-2, #3a3a40);
  font-size: 14px;
  font-weight: 600;
}

body .metric-card .metric-top .metric-icon {
  order: -1;
  flex: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: rgba(var(--mc-rgb), 0.14);
  box-shadow: inset 0 0 0 1px rgba(var(--mc-rgb), 0.18);
}

body .metric-card .metric-top .metric-icon img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

body .metric-card .metric-status {
  margin-left: auto;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  color: #1f7a3a;
  background: rgba(52, 199, 89, 0.14);
}

body .metric-card[data-tone="warn"] .metric-status {
  color: #9a5200;
  background: rgba(255, 149, 0, 0.16);
}

body .metric-card[data-tone="bad"] .metric-status {
  color: #c4261d;
  background: rgba(255, 59, 48, 0.13);
}

body .metric-card[data-tone="neutral"] .metric-status {
  color: #55555e;
  background: rgba(60, 60, 90, 0.08);
}

/* ---------- 大数字 ---------- */
body .metric-card .metric-value {
  margin: 0;
  color: var(--g-text, #1d1d1f);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

body .metric-card .metric-value span {
  margin-left: 3px;
  color: var(--g-text-3, #4f4f58);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
}

body .metric-card[data-tone="warn"] .metric-value { color: #a35a00; }
body .metric-card[data-tone="bad"] .metric-value  { color: #d0271d; }

/* ---------- 一句话提示 + 动作 ---------- */
body .metric-card .metric-hint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 6px 0 12px;
  color: var(--g-text-3, #4f4f58);
  font-size: 13px;
  line-height: 1.4;
}

body .metric-card .metric-hint b {
  flex: none;
  color: var(--mc-ink);
  font-weight: 600;
}

body .metric-card .metric-hint i {
  display: inline-block;
  margin-left: 3px;
  font-style: normal;
  transition: transform 0.18s ease;
}

body .metric-card:hover .metric-hint i,
body .metric-card:focus-visible .metric-hint i {
  transform: translateX(3px);
}

/* ---------- 进度条（到课率） ---------- */
body .metric-card .progress {
  height: 6px;
  margin: 0 0 12px;
  border-radius: 999px;
  background: rgba(var(--mc-rgb), 0.14);
}

body .metric-card .progress i {
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(var(--mc-rgb), 0.75), rgb(var(--mc-rgb)));
}

/* ---------- 7 日趋势：弱化，只做背景参考 ---------- */
body .metric-card .metric-chart {
  opacity: 0.75;
  transition: opacity 0.18s ease;
}

body .metric-card:hover .metric-chart {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  body .metric-grid .metric-card,
  body .metric-card .metric-hint i,
  body .metric-card .metric-chart {
    transition: none;
  }

  body .metric-grid .metric-card:hover {
    transform: none;
  }
}