/* ============================================================
 * style.css — 移动端优先
 * ============================================================ */
:root{
  --bg:#f2f4f8;
  --card:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --accent:#1f6feb;
  --accent-soft:#e8f1ff;
  --danger:#dc2626;
  --today:hsl(212 100% 97%);
  --rowh:54px;
  --pcol:37px;
  --tabh:56px;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 4px 14px rgba(16,24,40,.05);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0e1116; --card:#171b22; --text:#e8eaed; --muted:#98a2b3;
    --line:#252b35; --accent:#4b8ef7; --accent-soft:#132340;
    --today:hsl(212 60% 13%);
    --shadow:0 1px 2px rgba(0,0,0,.4),0 4px 14px rgba(0,0,0,.3);
  }
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
/* 必须放在最前面：.sheet 等元素设了 display:flex，会盖掉 [hidden] 的默认隐藏 */
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  overscroll-behavior-y:none;
}
h1,h2,h3,p{margin:0}
button,input,select{font:inherit;color:inherit}

/* ───────── 视图容器 ───────── */
.view{display:none;padding-bottom:calc(var(--tabh) + env(safe-area-inset-bottom) + 8px)}
.view.is-active{display:block}

/* ───────── 「装到桌面」引导条 ───────── */
.installbar{
  display:flex; align-items:flex-start; gap:6px;
  margin:calc(env(safe-area-inset-top) + 8px) 12px 0;
  padding:10px 8px 10px 12px;
  background:var(--accent-soft); border-radius:var(--radius);
  font-size:13px; line-height:1.5;
}
.installbar-txt{flex:1;min-width:0}
.installbar-txt b{color:var(--accent)}
.installbar-x{flex:none;width:26px;height:26px;font-size:12px;background:transparent;box-shadow:none}
/* 引导条自己带了顶部安全区留白，紧跟着的周条就别再留一次 */
.installbar:not([hidden]) + .wkbar{padding-top:8px}

/* ───────── 课表：周切换条 ───────── */
.wkbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:6px;
  padding:calc(env(safe-area-inset-top) + 8px) 12px 8px;
  background:var(--bg);
}
.iconbtn{
  flex:none; width:36px; height:36px; border:0; border-radius:10px;
  background:var(--card); box-shadow:var(--shadow);
  font-size:20px; line-height:1; cursor:pointer; color:var(--muted);
  display:flex; align-items:center; justify-content:center;
}
.iconbtn:active{transform:scale(.94)}
.wklabel{
  flex:1; min-width:0; border:0; background:transparent; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; line-height:1.25;
  padding:2px 0;
}
.wklabel b{font-size:17px;font-weight:700}
.wklabel span{font-size:11px;color:var(--muted)}
.todaybtn{
  flex:none; border:0; border-radius:9px; padding:7px 11px;
  background:var(--accent-soft); color:var(--accent);
  font-size:12px; font-weight:600; cursor:pointer;
}
.todaybtn:active{transform:scale(.95)}

/* ───────── 周次选择 ───────── */
.wkstrip{
  display:flex; gap:6px; overflow-x:auto; padding:2px 12px 10px;
  scrollbar-width:none;
}
.wkstrip::-webkit-scrollbar{display:none}
.wkchip{
  flex:none; min-width:40px; padding:5px 8px; border:0; border-radius:9px;
  background:var(--card); box-shadow:var(--shadow);
  font-size:12px; color:var(--muted); cursor:pointer; white-space:nowrap;
}
.wkchip.is-on{background:var(--accent); color:#fff; font-weight:700}
.wkchip.is-cur:not(.is-on){box-shadow:inset 0 0 0 1.5px var(--accent); color:var(--accent)}

/* ───────── 网格 ───────── */
.gridwrap{overflow-x:auto; padding:0 8px 16px}
.grid{min-width:100%; background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow); overflow:hidden}

.ghead{display:flex; border-bottom:1px solid var(--line)}
.gcorner{width:var(--pcol); flex:none}
.gday{
  flex:1 1 0; min-width:0; padding:7px 0 6px; text-align:center;
  font-size:12px; font-weight:600; border-left:1px solid var(--line);
}
.gday span{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:1px}
.gday.is-today{color:var(--accent); background:var(--today)}

.gbody{display:flex; position:relative}
/* 关键：min-width:0 让 7 个日列能真正压缩到容器宽度内，否则会横向溢出 */
.gcols{flex:1 1 0; min-width:0; display:flex; position:relative}
.gpcol{width:var(--pcol); flex:none}
.gp{
  height:var(--rowh); border-bottom:1px solid var(--line);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:1px; font-size:11px; color:var(--muted);
}
.gp b{font-size:12px;color:var(--text);font-weight:600}
.gp:last-child{border-bottom:0}

.gdaycol{flex:1 1 0; min-width:0; position:relative; border-left:1px solid var(--line)}
.gdaycol:last-child{border-right:0}
.gbg{height:var(--rowh); border-bottom:1px solid var(--line)}
.gbg:last-child{border-bottom:0}
.gdaycol.is-today .gbg{background:var(--today)}

.gcourse{
  position:absolute; left:2px; right:2px;
  border-radius:9px; padding:6px 4px 6px 5px;
  writing-mode:vertical-rl;
  overflow:hidden; cursor:pointer;
  font-size:11.5px; font-weight:600; line-height:1.12; letter-spacing:.2px;
  transition:transform .12s;
}
.gcourse:active{transform:scale(.95)}
/* 地点另起一列，避免把「C教116」从中间截断 */
.gcourse .loc{display:block;margin-block-start:3px;font-weight:400;font-size:9.5px;opacity:.72}

.nowline{position:absolute;left:0;right:0;height:2px;background:#ef4444;z-index:5;pointer-events:none}
.nowline::before{content:'';position:absolute;left:-3px;top:-3px;width:8px;height:8px;border-radius:50%;background:#ef4444}

/* ───────── 空状态 ───────── */
.empty{text-align:center;padding:56px 32px}
.empty-ico{font-size:44px;margin-bottom:10px}
.empty h2{font-size:17px;margin-bottom:6px}
.empty p{color:var(--muted);font-size:13px;margin-bottom:20px}

/* ───────── 通用页面 ───────── */
.pagehead{padding:calc(env(safe-area-inset-top) + 14px) 16px 6px}
.pagehead h1{font-size:24px;font-weight:700}

.card{
  background:var(--card); border-radius:var(--radius); box-shadow:var(--shadow);
  margin:12px; padding:15px;
}
.card h2{font-size:15px;font-weight:700;margin-bottom:4px;display:flex;align-items:center;gap:7px}
.tag{font-size:10px;font-weight:600;background:var(--accent-soft);color:var(--accent);padding:2px 7px;border-radius:20px}
.hint{font-size:12px;color:var(--muted);line-height:1.55;margin:5px 0 11px}
.hint code{background:var(--bg);padding:1px 5px;border-radius:5px;font-size:11px}
.footnote{font-size:11px;color:var(--muted);text-align:center;line-height:1.7;padding:4px 28px 12px}

.btn{
  border:0; border-radius:11px; padding:11px 15px; cursor:pointer;
  background:var(--card); box-shadow:var(--shadow); font-weight:600; font-size:14px;
  transition:transform .12s,opacity .12s;
}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--accent);color:#fff}
.btn.danger{background:var(--danger);color:#fff}
.btn.ghost{background:transparent;box-shadow:none;color:var(--muted)}
.btn.danger.ghost{color:var(--danger)}
.btn.block{display:block;width:100%;margin-top:8px}
.btn.small{padding:8px 12px;font-size:13px}
.btn[disabled]{opacity:.5;pointer-events:none}
.row-btns{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}

/* ───────── 表单 ───────── */
.field{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.field:last-of-type{border-bottom:0}
.field>span{flex:none;width:80px;font-size:13px;color:var(--muted)}
.field input,.field select{
  flex:1;min-width:0;border:0;background:transparent;padding:2px 0;
  font-size:14px;outline:none;text-align:right;
}
.field select{text-align:left;background:transparent}
.field input[type=date]{text-align:left}
.field-2{display:flex;gap:14px}
.field-2 .field{flex:1}

/* 节次编辑器 */
.peditor{display:flex;flex-direction:column;gap:7px;margin-top:6px}
.prow{display:flex;align-items:center;gap:8px}
.prow>span{width:44px;flex:none;font-size:12px;color:var(--muted);white-space:nowrap}
.prow input{
  width:0;flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;
  padding:7px 9px;font-size:13px;background:transparent;outline:none;
}
.prow input:focus{border-color:var(--accent)}
.prow .del{border:0;background:transparent;color:var(--muted);font-size:16px;cursor:pointer;padding:0 2px}

/* ───────── 状态提示 ───────── */
.status{
  margin-top:11px;padding:10px 12px;border-radius:10px;
  font-size:12.5px;line-height:1.55;background:var(--accent-soft);color:var(--accent);
  word-break:break-word;
}
.status.err{background:#fee;color:#b91c1c}
@media (prefers-color-scheme:dark){.status.err{background:#3b1414;color:#fca5a5}}
.status.ok{background:#e7f8ef;color:#067647}
@media (prefers-color-scheme:dark){.status.ok{background:#0d2b1c;color:#6ee7a8}}
.spin{display:inline-block;width:11px;height:11px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:sp .7s linear infinite;vertical-align:-1px;margin-right:5px}
@keyframes sp{to{transform:rotate(360deg)}}

/* ───────── 底部导航 ───────── */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  display:flex; background:color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab{
  flex:1;border:0;background:transparent;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  height:var(--tabh);font-size:10.5px;color:var(--muted);
}
.tab svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tab.is-active{color:var(--accent);font-weight:600}
.tab.is-active svg{stroke-width:2}

/* ───────── 弹层 ───────── */
.sheet-mask{position:fixed;inset:0;z-index:40;background:rgba(15,23,42,.45);backdrop-filter:blur(2px)}
.sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  background:var(--card); border-radius:20px 20px 0 0;
  max-height:88vh; display:flex; flex-direction:column;
  animation:up .22s cubic-bezier(.32,.72,0,1);
  padding-bottom:env(safe-area-inset-bottom);
}
@keyframes up{from{transform:translateY(100%)}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:15px 15px 9px;flex:none}
.sheet-head h2{font-size:16px;font-weight:700}
.sheet-head .iconbtn{background:transparent;box-shadow:none;font-size:16px}
.sheet-body{overflow-y:auto;padding:0 15px 8px;flex:1;-webkit-overflow-scrolling:touch}
.sheet-foot{display:flex;gap:8px;padding:10px 15px 15px;flex:none;border-top:1px solid var(--line)}
.sheet-foot .btn{flex:1}
.sheet-body pre{white-space:pre-wrap;word-break:break-word;font-size:11px;line-height:1.5;color:var(--muted);margin:0}

/* 预览用的课程行 */
.pvrow{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.pvrow:last-child{border-bottom:0}
.pvdot{width:9px;height:9px;border-radius:50%;flex:none}
.pvmain{flex:1;min-width:0}
.pvmain b{font-size:13.5px;font-weight:600;display:block}
.pvmain small{font-size:11.5px;color:var(--muted);display:block;margin-top:1px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pvwhen{flex:none;font-size:11.5px;color:var(--muted);text-align:right;line-height:1.35}
.pvwhen b{color:var(--text);font-weight:600}

/* ───────── toast ───────── */
.toast{
  position:fixed;left:50%;bottom:calc(var(--tabh) + env(safe-area-inset-bottom) + 18px);
  transform:translateX(-50%);z-index:80;
  background:rgba(17,24,39,.93);color:#fff;font-size:13px;
  padding:9px 16px;border-radius:22px;max-width:80vw;text-align:center;
  animation:up2 .2s;
}
@keyframes up2{from{opacity:0;transform:translate(-50%,8px)}}