/* 培恩学习台 · 样式
   手机优先。不依赖任何外部字体和 CDN（服务器在国内，外链字体经常拉不到）。 */

:root {
  --paper:#F4F6F2; --card:#FFFFFF; --card2:#FAFBF8;
  --ink:#1A2330; --ink2:#46505D; --muted:#79838F;
  --line:#E3E6DF; --line2:#CFD5C9;
  --pri:#17428A; --pri-ink:#FFFFFF; --pri-soft:#E7EDF8;
  --ok:#1C7A50; --ok-soft:#E1F0E8;
  --warn:#9C6B0C; --warn-soft:#F7EEDA;
  --bad:#BC3320; --bad-soft:#F9E5E1;
  --shadow:0 1px 2px rgba(26,35,48,.06), 0 4px 12px rgba(26,35,48,.05);
  --r:12px;
  --tabh:58px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:#14181C; --card:#1C2126; --card2:#22282E;
    --ink:#E7EAE5; --ink2:#B7BEB9; --muted:#8892A0;
    --line:#2C333A; --line2:#3A424A;
    --pri:#8FADEB; --pri-ink:#0E1620; --pri-soft:#1D2A3E;
    --ok:#66C398; --ok-soft:#142B22;
    --warn:#D9A64A; --warn-soft:#2E2718;
    --bad:#E88172; --bad-soft:#331F1C;
    --shadow:0 1px 2px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"] {
  --paper:#14181C; --card:#1C2126; --card2:#22282E;
  --ink:#E7EAE5; --ink2:#B7BEB9; --muted:#8892A0;
  --line:#2C333A; --line2:#3A424A;
  --pri:#8FADEB; --pri-ink:#0E1620; --pri-soft:#1D2A3E;
  --ok:#66C398; --ok-soft:#142B22;
  --warn:#D9A64A; --warn-soft:#2E2718;
  --bad:#E88172; --bad-soft:#331F1C;
  --shadow:0 1px 2px rgba(0,0,0,.3);
}

* { box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0; background:var(--paper); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px; line-height:1.6;
  padding-bottom:calc(var(--tabh) + env(safe-area-inset-bottom));
}
body.noTabs { padding-bottom:0; }
a { color:var(--pri); text-decoration:none; }
:focus-visible { outline:2px solid var(--pri); outline-offset:2px; }
.num { font-variant-numeric:tabular-nums; }

/* ---------- 布局 ---------- */
.wrap { max-width:720px; margin:0 auto; padding:0 14px; }
.view { display:none; }
.view.on { display:block; }
.stack { display:flex; flex-direction:column; gap:12px; }
.row { display:flex; align-items:center; gap:10px; }
.row.wrap2 { flex-wrap:wrap; }
.spread { display:flex; align-items:center; justify-content:space-between; gap:10px; }
.grow { flex:1; min-width:0; }
.hide { display:none !important; }

/* ---------- 顶栏 ---------- */
header.top {
  position:sticky; top:0; z-index:30; background:var(--paper);
  border-bottom:1px solid var(--line); padding-top:env(safe-area-inset-top);
}
header.top .bar { max-width:720px; margin:0 auto; padding:10px 14px; display:flex; align-items:center; justify-content:space-between; gap:10px; }
.brand { font-weight:700; font-size:16.5px; letter-spacing:.01em; }
.brand small { font-weight:400; color:var(--muted); font-size:12.5px; margin-left:8px; }
.who { font-size:13px; color:var(--muted); display:flex; align-items:center; gap:8px; }

/* ---------- 底部导航 ---------- */
nav.tabs {
  position:fixed; left:0; right:0; bottom:0; z-index:40; background:var(--card);
  border-top:1px solid var(--line); padding-bottom:env(safe-area-inset-bottom);
}
nav.tabs .inner { max-width:720px; margin:0 auto; display:flex; }
nav.tabs button {
  flex:1; background:none; border:0; padding:8px 2px 7px; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; gap:3px;
  color:var(--muted); font-size:11.5px; font-family:inherit; height:var(--tabh);
  justify-content:center; position:relative;
}
nav.tabs button .ic { font-size:19px; line-height:1; }
nav.tabs button.on { color:var(--pri); font-weight:600; }
nav.tabs button .dot {
  position:absolute; top:7px; right:calc(50% - 20px); min-width:16px; height:16px; padding:0 4px;
  border-radius:9px; background:var(--bad); color:#fff; font-size:10.5px; line-height:16px; font-weight:700;
}

/* ---------- 卡片 ---------- */
.card { background:var(--card); border:1px solid var(--line); border-radius:var(--r); padding:14px; }
.card.flat { box-shadow:none; }
.card.lift { box-shadow:var(--shadow); }
.card h3 { margin:0 0 10px; font-size:15px; font-weight:700; }
.sec { margin:16px 0 8px; font-size:12.5px; letter-spacing:.06em; color:var(--muted); font-weight:600; }
.sub { color:var(--muted); font-size:13.5px; }
.hr { height:1px; background:var(--line); margin:12px 0; }

/* ---------- 今日页 hero ---------- */
.hero { background:var(--card); border:1px solid var(--line); border-radius:var(--r); padding:18px 16px; box-shadow:var(--shadow); }
.hero .hi { font-size:13.5px; color:var(--muted); }
.hero .big { font-size:28px; font-weight:700; line-height:1.25; margin:6px 0 2px; letter-spacing:-.01em; }
.hero .big em { font-style:normal; color:var(--pri); font-size:38px; font-variant-numeric:tabular-nums; }
.hero .note { font-size:14px; color:var(--ink2); }
.hero.done .big em { color:var(--ok); }

.chips { display:flex; gap:8px; flex-wrap:wrap; }
.chip {
  display:inline-flex; align-items:center; gap:5px; padding:4px 10px; border-radius:999px;
  background:var(--card2); border:1px solid var(--line); font-size:12.5px; color:var(--ink2);
}
.chip.pri { background:var(--pri-soft); border-color:transparent; color:var(--pri); font-weight:600; }
.chip.ok { background:var(--ok-soft); border-color:transparent; color:var(--ok); font-weight:600; }
.chip.warn { background:var(--warn-soft); border-color:transparent; color:var(--warn); font-weight:600; }
.chip.bad { background:var(--bad-soft); border-color:transparent; color:var(--bad); font-weight:600; }

/* ---------- 四个数 ---------- */
.stats { display:grid; grid-template-columns:repeat(4,1fr); gap:8px; }
.stats .s { background:var(--card); border:1px solid var(--line); border-radius:10px; padding:10px 6px; text-align:center; }
.stats .s b { display:block; font-size:21px; font-weight:700; font-variant-numeric:tabular-nums; line-height:1.2; }
.stats .s span { font-size:11.5px; color:var(--muted); }
.stats .s.red b { color:var(--bad); }
.stats .s.ok b { color:var(--ok); }

/* ---------- 复盘卡 ---------- */
.mcard {
  background:var(--card); border:1px solid var(--line); border-radius:var(--r); padding:12px 14px;
  display:flex; gap:12px; align-items:flex-start; cursor:pointer; text-align:left; width:100%;
  font-family:inherit; font-size:16px; color:inherit;
}
.mcard:active { background:var(--card2); }
.mcard .ln { flex:1; min-width:0; }
.mcard .t1 { font-weight:600; font-size:15px; line-height:1.4; overflow:hidden; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; }
.mcard .t2 { font-size:12.5px; color:var(--muted); margin-top:3px; }
.mcard .go { color:var(--muted); font-size:18px; align-self:center; }
.stripe { width:3px; align-self:stretch; border-radius:2px; background:var(--line2); flex:0 0 3px; }
.stripe.ws { background:var(--warn); }
.stripe.focus { background:var(--bad); }
.stripe.over { background:var(--bad); }

.subj { font-weight:700; font-size:12px; padding:2px 7px; border-radius:6px; background:var(--pri-soft); color:var(--pri); }
.subj.物理{background:#E9EEF9;color:#24509B}.subj.化学{background:#E6F2EC;color:#1B6E4A}
.subj.生物{background:#EAF1E4;color:#4A6B22}.subj.数学{background:#F2EBE2;color:#8A5A20}
.subj.语文{background:#F7E9E6;color:#A93B26}.subj.英语{background:#EDE9F5;color:#5B4694}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]) .subj{background:var(--pri-soft);color:var(--pri)}
}
:root[data-theme="dark"] .subj{background:var(--pri-soft);color:var(--pri)}

/* ---------- 按钮 ---------- */
button, .btn {
  font-family:inherit; font-size:15px; cursor:pointer; border-radius:10px; border:1px solid var(--line2);
  background:var(--card); color:var(--ink); padding:10px 14px; font-weight:500;
}
button:active, .btn:active { transform:translateY(1px); }
button[disabled] { opacity:.5; cursor:default; }
.btn-pri { background:var(--pri); color:var(--pri-ink); border-color:transparent; font-weight:600; }
.btn-ok { background:var(--ok); color:#fff; border-color:transparent; font-weight:600; }
.btn-bad { background:var(--bad); color:#fff; border-color:transparent; font-weight:600; }
.btn-ghost { background:transparent; border-color:var(--line2); }
.btn-lg { padding:14px 18px; font-size:16px; width:100%; }
.btn-sm { padding:6px 10px; font-size:13px; border-radius:8px; }
.btn-link { background:none; border:0; color:var(--pri); padding:4px 2px; font-size:14px; }
.btn-row { display:flex; gap:10px; }
.btn-row > * { flex:1; }

.fab {
  position:fixed; right:16px; bottom:calc(var(--tabh) + 16px + env(safe-area-inset-bottom)); z-index:35;
  width:auto; padding:13px 18px; border-radius:999px; background:var(--pri); color:var(--pri-ink);
  border:0; font-weight:700; font-size:15px; box-shadow:0 4px 16px rgba(23,66,138,.3);
}

/* ---------- 表单 ---------- */
label.f { display:block; margin:0 0 4px; font-size:13px; font-weight:600; color:var(--ink2); }
label.f .req { color:var(--bad); }
label.f .hint { font-weight:400; color:var(--muted); margin-left:6px; font-size:12px; }
input[type=text], input[type=password], input[type=number], input[type=date], select, textarea {
  width:100%; padding:11px 12px; border:1px solid var(--line2); border-radius:10px;
  background:var(--card); color:var(--ink); font-family:inherit; font-size:16px; line-height:1.5;
}
textarea { resize:vertical; min-height:74px; }
input:focus, select:focus, textarea:focus { outline:none; border-color:var(--pri); box-shadow:0 0 0 3px var(--pri-soft); }
.field { margin-bottom:14px; }
.fgrid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.err { color:var(--bad); font-size:13px; margin-top:5px; }
.okmsg { color:var(--ok); font-size:13px; margin-top:5px; }

/* 错因选择 */
.causes { display:grid; grid-template-columns:repeat(2,1fr); gap:8px; }
.causes button {
  text-align:left; padding:9px 11px; font-size:13.5px; border-radius:9px; line-height:1.35;
}
.causes button b { font-weight:700; margin-right:5px; color:var(--muted); }
.causes button.on { background:var(--pri-soft); border-color:var(--pri); color:var(--pri); font-weight:600; }
.causes button.on b { color:var(--pri); }

/* 照片 */
.photos { display:flex; gap:8px; flex-wrap:wrap; }
.photos .ph { position:relative; width:76px; height:76px; border-radius:9px; overflow:hidden; border:1px solid var(--line); }
.photos .ph img { width:100%; height:100%; object-fit:cover; display:block; }
.photos .ph button {
  position:absolute; top:2px; right:2px; width:22px; height:22px; padding:0; border-radius:50%;
  background:rgba(0,0,0,.6); color:#fff; border:0; font-size:14px; line-height:22px;
}
.photos .add {
  width:76px; height:76px; border:1px dashed var(--line2); border-radius:9px; background:var(--card2);
  color:var(--muted); font-size:12px; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
}
.photos .add i { font-style:normal; font-size:20px; }

/* 筛选条 */
.filter { display:flex; gap:7px; overflow-x:auto; padding:2px 0 8px; -webkit-overflow-scrolling:touch; }
.filter::-webkit-scrollbar { display:none; }
.filter button {
  flex:0 0 auto; padding:6px 12px; font-size:13.5px; border-radius:999px; background:var(--card); color:var(--ink2);
}
.filter button.on { background:var(--ink); color:var(--paper); border-color:transparent; font-weight:600; }

/* ---------- 弹层 ---------- */
.sheet-bg {
  position:fixed; inset:0; z-index:50; background:rgba(16,22,30,.45);
  display:flex; align-items:flex-end; justify-content:center;
}
.sheet {
  background:var(--paper); width:100%; max-width:720px; max-height:92vh; overflow-y:auto;
  border-radius:16px 16px 0 0; padding:0 0 calc(18px + env(safe-area-inset-bottom));
  animation:up .18s ease-out;
}
@keyframes up { from { transform:translateY(14px); opacity:.6 } to { transform:none; opacity:1 } }
@media (prefers-reduced-motion: reduce) { .sheet { animation:none } }
.sheet .sh {
  position:sticky; top:0; background:var(--paper); z-index:2; padding:14px 16px 10px;
  border-bottom:1px solid var(--line); display:flex; align-items:center; justify-content:space-between; gap:10px;
}
.sheet .sh b { font-size:16px; }
.sheet .sb { padding:14px 16px; }
.x { background:none; border:0; font-size:22px; line-height:1; color:var(--muted); padding:2px 6px; }
@media (min-width:640px) {
  .sheet-bg { align-items:center; }
  .sheet { border-radius:16px; max-height:88vh; }
}

/* ---------- 提示条 ---------- */
.toast {
  position:fixed; left:50%; transform:translateX(-50%); bottom:calc(var(--tabh) + 84px + env(safe-area-inset-bottom));
  z-index:60; background:var(--ink); color:var(--paper); padding:11px 16px; border-radius:10px;
  font-size:14px; max-width:88%; box-shadow:0 6px 20px rgba(0,0,0,.25); line-height:1.45;
}
.toast.ok { background:var(--ok); color:#fff; }
.toast.bad { background:var(--bad); color:#fff; }

.alarm { border-radius:10px; padding:11px 13px; font-size:14px; line-height:1.5; border:1px solid transparent; }
.alarm.red { background:var(--bad-soft); color:var(--bad); border-color:var(--bad); font-weight:600; }
.alarm.yellow { background:var(--warn-soft); color:var(--warn); }
.alarm.info { background:var(--pri-soft); color:var(--pri); }

.empty { text-align:center; padding:30px 16px; color:var(--muted); font-size:14.5px; line-height:1.7; }
.empty .big { font-size:34px; display:block; margin-bottom:8px; }

/* ---------- 表格 ---------- */
.tw { overflow-x:auto; margin:0 -14px; padding:0 14px; }
table { border-collapse:collapse; width:100%; font-size:14px; font-variant-numeric:tabular-nums; }
th, td { padding:8px 9px; text-align:right; border-bottom:1px solid var(--line); white-space:nowrap; }
th:first-child, td:first-child { text-align:left; }
th { font-size:12px; color:var(--muted); font-weight:600; }
td input { padding:7px 8px; font-size:15px; text-align:right; min-width:64px; }
tr:last-child td { border-bottom:0; }

/* ---------- 图表 ---------- */
.chart { width:100%; height:auto; display:block; }
.legend { display:flex; gap:12px; flex-wrap:wrap; font-size:12px; color:var(--muted); margin-top:6px; }
.legend i { display:inline-block; width:10px; height:10px; border-radius:2px; margin-right:4px; vertical-align:-1px; }

/* 分布条 */
.bars { display:flex; flex-direction:column; gap:7px; }
.bar { display:grid; grid-template-columns:minmax(0,7.6em) 1fr 46px; align-items:center; gap:8px; font-size:12.5px; }
.bar .t { color:var(--ink2); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.bar .track { height:8px; background:var(--card2); border-radius:5px; overflow:hidden; border:1px solid var(--line); }
.bar .fill { height:100%; background:var(--pri); border-radius:5px; }
.bar .fill.top { background:var(--bad); }
.bar .v { text-align:right; color:var(--muted); font-variant-numeric:tabular-nums; }

/* ---------- 登录 ---------- */
.login-wrap { min-height:100vh; min-height:100dvh; display:flex; align-items:center; justify-content:center; padding:24px 16px; }
.login-card { width:100%; max-width:360px; }
.login-card .logo { text-align:center; margin-bottom:22px; }
.login-card .logo b { font-size:22px; display:block; }
.login-card .logo span { color:var(--muted); font-size:13.5px; }

.kv { display:grid; grid-template-columns:auto 1fr; gap:6px 12px; font-size:14px; }
.kv dt { color:var(--muted); }
.kv dd { margin:0; }
code.tok { font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:12.5px; background:var(--card2);
  border:1px solid var(--line); border-radius:6px; padding:8px 10px; display:block; word-break:break-all; }