/* ============ 主题变量 ============ */
:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #16181d;
  --text2: #6b7280;
  --text3: #9aa3b2;
  --line: #e9ebf0;
  --accent: #3b6ef5;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #191c22;
    --text: #e8eaee;
    --text2: #9aa3b2;
    --text3: #6b7280;
    --line: #262a33;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue",
               "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

body {
  overscroll-behavior-y: none;   /* 关掉钉钉 WebView 的橡皮筋 */
  -webkit-user-select: none;
  user-select: none;
  padding-bottom: calc(16px + var(--safe-b));
}

button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }

/* ============ 顶部固定区 ============ */
.sticky-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  padding-top: var(--safe-t);
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  padding: 14px 16px 10px;
}
.tb-main { flex: 1; min-width: 0; }
.topbar h1 {
  margin: 0;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: .2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar .sub {
  margin: 3px 0 0;
  font-size: 12.5px;
  color: var(--text2);
}
.ghost {
  flex: none;
  font-size: 12.5px;
  color: var(--accent);
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(59, 110, 245, .1);          /* 老 WebView 兜底 */
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.ghost[hidden] { display: none; }

/* 周次横向条 */
.weekstrip {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 16px 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.weekstrip::-webkit-scrollbar { display: none; }
.wk {
  flex: none;
  min-width: 34px;
  height: 30px;
  padding: 0 9px;
  border-radius: 9px;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: .15s;
}
.wk.is-now { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.wk.is-active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* 今日 / 周视图 切换 */
.tabs {
  display: flex;
  gap: 4px;
  margin: 0 16px 10px;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 11px;
}
.tab {
  flex: 1;
  height: 32px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text2);
  transition: .15s;
}
.tab.is-active { background: var(--bg); color: var(--text); font-weight: 600; }

/* ============ 视图 ============ */
.view { display: none; }
.view.is-active { display: block; }

/* ---- 今日视图 ---- */
.day-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 16px 12px;
}
.day-head .d1 { font-size: 15px; font-weight: 600; }
.day-head .d2 { font-size: 12.5px; color: var(--text2); }

.card {
  position: relative;
  display: flex;
  gap: 12px;
  margin: 0 12px 10px;
  padding: 13px 14px 13px 12px;
  background: var(--surface);
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--c, var(--accent));
}
.card.is-done { opacity: .48; }
.card.is-live { border-color: var(--c, var(--accent)); }

.card-body { flex: 1; min-width: 0; }
.card-top { display: flex; align-items: center; gap: 8px; }
.card-name {
  font-size: 15.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-meta {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--text2);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
}
.card-meta .k { color: var(--text3); }

.badge {
  flex: none;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--c, var(--accent));
  color: #fff;
}
.badge.soft {
  background: rgba(0, 0, 0, .06);              /* 老 WebView 兜底 */
  background: color-mix(in srgb, var(--c) 14%, transparent);
  color: var(--c);
}

.prog { margin-top: 9px; height: 3px; border-radius: 2px; background: var(--line); overflow: hidden; }
.prog i { display: block; height: 100%; background: var(--c, var(--accent)); border-radius: 2px; }

.card-slot {
  flex: none;
  text-align: right;
  font-size: 11.5px;
  color: var(--text3);
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}
.card-slot b { display: block; font-size: 13px; color: var(--text2); font-weight: 600; }

.empty {
  margin: 40px 16px;
  text-align: center;
  color: var(--text2);
  font-size: 14px;
  line-height: 1.9;
}
.empty .big { font-size: 40px; display: block; margin-bottom: 6px; }

/* ---- 周视图 ---- */
.grid {
  display: grid;
  grid-template-columns: 50px repeat(7, minmax(0, 1fr));
  grid-auto-rows: 58px;
  gap: 2px;
  padding: 0 8px 20px;
}
.gh {
  font-size: 11px;
  color: var(--text2);
  text-align: center;
  line-height: 1.25;
  padding-top: 4px;
}
.gh b { display: block; font-size: 12.5px; font-weight: 600; color: var(--text); }
.gh.is-today b, .gh.is-today span { color: var(--accent); }

/* 左侧栏：上课时间（上面一行是大节名，下面两行是起止时间） */
.gt {
  color: var(--text3);
  text-align: center;
  line-height: 1.25;
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}
.gt em {
  display: block;
  font-style: normal;
  font-size: 8.5px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -.3px;
  margin-bottom: 2px;
  white-space: nowrap;
}
.gt b { display: block; font-size: 12.5px; font-weight: 650; color: var(--text2); }
.gt i { display: block; font-style: normal; font-size: 10px; }

/* 每两个大节用深浅交替，方便一眼看出大节边界 */
.gc { background: var(--line); border-radius: 5px; }
.gc.g0 { opacity: .42; }
.gc.g1 { opacity: .22; }
.gc.is-today { opacity: .8; }

.gb {
  position: relative;
  z-index: 2;
  margin: 1px;
  padding: 4px 3px;
  border-radius: 7px;
  background: var(--cbg-l);
  color: var(--c);
  font-size: 10.5px;
  line-height: 1.25;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1px;
  word-break: break-all;
}
.gb b { font-weight: 600; }
.gb i { font-style: normal; opacity: .78; font-size: 9.5px; }
.gb.is-done { opacity: .45; }

@media (prefers-color-scheme: dark) {
  .gb { background: var(--cbg-d); color: var(--ct-d); }
}

/* ============ 课程详情弹层 ============ */
.sheet-mask {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, .42);
  animation: fade .18s ease-out;
}
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }

.sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 41;
  background: var(--surface);
  border-radius: 18px 18px 0 0;
  padding: 8px 20px calc(22px + var(--safe-b));
  animation: up .22s cubic-bezier(.22, 1, .36, 1);
  max-height: 78vh;
  overflow-y: auto;
}
@keyframes up { from { transform: translateY(100%) } to { transform: translateY(0) } }

.sheet-grip {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--line);
  margin: 4px auto 16px;
}
.sheet h2 { margin: 0 0 4px; font-size: 18px; font-weight: 650; padding-left: 10px; border-left: 4px solid var(--c, var(--accent)); }
.sheet .rows { margin-top: 16px; }
.sheet .row {
  display: flex;
  gap: 14px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.sheet .row .k { flex: none; width: 62px; color: var(--text3); font-size: 13px; }
.sheet .row .v { flex: 1; }

[hidden] { display: none !important; }