/* ============================================================
   app.css —— 站点公共样式（首页 / 题库工作台 / 成绩记录）
   与 game.css 的配色保持一致：浅蓝 + 暖橙，圆角卡片
   ============================================================ */
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --bg1: #eaf4ff;
  --bg2: #f7fbff;
  --bg3: #fff6ec;
  --ink: #1f2d3d;
  --ink2: #5b6d85;
  --ink3: #8494a8;
  --blue: #1f7ae0;
  --blue-d: #3574b5;
  --blue-l: #eaf3ff;
  --orange: #f0801a;
  --red: #e5484d;
  --green: #22a06b;
  --gold: #ffb703;
  --line: #d7e2ee;
  --card: #fff;
  /* 深色主题也要看得清：控件底色、控件文字、标签底色、标题色 */
  --field-bg: #fbfdff;
  --field-ink: #1f2d3d;
  --chip-bg: #f4f8fd;
  --heading: #123a6b;
  --panel: #fff;
  --on-primary: #fff;
  --on-accent: #fff;
  --soft-line: #eef3f9;
}

html[data-theme="indigo"] { --bg1:#f4f6fb; --bg2:#f8faff; --bg3:#eef4fc; --ink:#172033; --ink2:#68758a; --ink3:#8793a7; --blue:#4f46e5; --blue-d:#3730a3; --blue-l:#eef2ff; --orange:#d97706; --red:#dc4155; --green:#059669; --gold:#f3b61f; --line:#dce3ef; --card:#fff; --field-bg:#f7f8ff; --field-ink:#172033; --chip-bg:#eef2ff; --heading:#1e1b4b; --panel:#fff; --on-primary:#fff; --on-accent:#fff; --soft-line:#e6ebf7; }
html[data-theme="ink"] { --bg1:#0c1210; --bg2:#101814; --bg3:#142019; --ink:#e8f4ee; --ink2:#9cb1a5; --ink3:#789184; --blue:#34d399; --blue-d:#15805b; --blue-l:#172a20; --orange:#a3e635; --red:#f0736a; --green:#5ee0a0; --gold:#d4af37; --line:#293a31; --card:#141d19; --field-bg:#131a17; --field-ink:#e8f4ee; --chip-bg:#1b2721; --heading:#e8f4ee; --panel:#141d19; --on-primary:#062317; --on-accent:#062317; --soft-line:#223029; }
html[data-theme="amber"] { --bg1:#fbf6ec; --bg2:#fffaf2; --bg3:#f7ecdb; --ink:#30251b; --ink2:#81705e; --ink3:#9b8a78; --blue:#b45309; --blue-d:#92400e; --blue-l:#f8ecd9; --orange:#d97706; --red:#c2413b; --green:#15803d; --gold:#e5a914; --line:#e9ddc9; --card:#fff; --field-bg:#fffdf8; --field-ink:#30251b; --chip-bg:#f7ecdb; --heading:#3d2a00; --panel:#fff; --on-primary:#fff; --on-accent:#fff; --soft-line:#f0e6d4; }
html[data-theme="lotus"] { --bg1:#fdf4f6; --bg2:#fff9fb; --bg3:#f8e9ef; --ink:#321d29; --ink2:#846c79; --ink3:#a08b97; --blue:#db2777; --blue-d:#9d174d; --blue-l:#f8e7ef; --orange:#c2410c; --red:#c23d5f; --green:#0f766e; --gold:#d4a72c; --line:#edd9e2; --card:#fff; --field-bg:#fffafc; --field-ink:#321d29; --chip-bg:#f8e9ef; --heading:#4a1f33; --panel:#fff; --on-primary:#fff; --on-accent:#fff; --soft-line:#f2e3ea; }
html[data-theme="obsidian"] { --bg1:#08080a; --bg2:#0e0e11; --bg3:#141310; --ink:#f3f0e5; --ink2:#aaa59a; --ink3:#817c71; --blue:#d4af37; --blue-d:#9d7f22; --blue-l:#211f18; --orange:#7dd3fc; --red:#f0736a; --green:#5ee0a0; --gold:#d4af37; --line:#302d24; --card:#111114; --field-bg:#16161a; --field-ink:#f3f0e5; --chip-bg:#1d1d21; --heading:#f3f0e5; --panel:#111114; --on-primary:#15120a; --on-accent:#15120a; --soft-line:#26262b; }

html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: linear-gradient(160deg, var(--bg1) 0%, var(--bg2) 45%, var(--bg3) 100%);
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
  min-height: 100%;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------- 布局 ---------------- */
.wrap { max-width: 940px; margin: 0 auto; padding: 18px 16px 60px; }
.narrow { max-width: 720px; }

.topbar {
  position: sticky; top: 10px; z-index: 20;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 12px 16px; margin-bottom: 18px;
  background: color-mix(in srgb, var(--card) 92%, transparent);
  border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 6px 18px rgba(30, 64, 120, .10);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; color: var(--heading); }
.brand-mark {
  width: 40px; height: 40px; flex: none; display: grid; place-items: center;
  border-radius: 12px; color: #fff; font-size: 18px; font-weight: 800;
  background: linear-gradient(140deg, var(--blue), var(--gold));
  box-shadow: 0 5px 14px rgba(31, 122, 224, .18);
}
.brand-txt { display: flex; flex-direction: column; min-width: 0; line-height: 1.25; }
.brand-txt strong { font-size: 16px; font-weight: 800; }
.brand-txt em { margin-left: 4px; color: var(--blue); font-size: 11px; font-style: normal; letter-spacing: 1px; }
.brand-txt small { display: block; font-size: 11.5px; font-weight: 500; color: var(--ink3); }
.nav { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  padding: 7px 14px; border-radius: 9px; font-size: 13px; font-weight: 700;
  color: var(--ink2); background: var(--chip-bg);
}
.nav a:hover { background: var(--blue-l); color: var(--blue-d); text-decoration: none; }
.nav a.on { background: var(--blue); color: var(--on-accent); }

.card {
  background: var(--card); border-radius: 18px; padding: 18px;
  box-shadow: 0 6px 18px rgba(30, 64, 120, .10); margin-bottom: 16px;
}
.card > h2 {
  margin: 0 0 4px; font-size: 18px; color: var(--heading);
}
.card > h2 + .sub { margin: 0 0 14px; font-size: 13px; color: var(--ink3); }

h1.page { font-size: 24px; color: var(--heading); margin: 4px 0 2px; }
p.lead { margin: 0 0 18px; color: var(--ink2); font-size: 14px; line-height: 1.7; }

/* ---------------- 表单 ---------------- */
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.field { flex: 1 1 180px; min-width: 150px; }
.field > label {
  display: block; font-size: 12px; font-weight: 700; color: var(--ink2);
  margin-bottom: 5px; letter-spacing: .3px;
}
.field > label .n {
  display: inline-block; width: 18px; height: 18px; line-height: 18px;
  text-align: center; border-radius: 6px;
  background: color-mix(in srgb, var(--blue) 18%, var(--card));
  color: var(--blue); font-size: 11px; margin-right: 6px;
}
input[type=text], input[type=number], input[type=password], input[type=file], select, textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: 11px;
  padding: 9px 11px; font-size: 14px; font-family: inherit;
  color: var(--field-ink);
  background: var(--field-bg); transition: border-color .15s, box-shadow .15s;
}
input::placeholder, textarea::placeholder { color: var(--ink3); opacity: .9; }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 18%, transparent);
}
select { appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8'><path d='M1 1l5 5 5-5' stroke='%238494a8' stroke-width='2' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat; background-position: right 11px center; padding-right: 30px;
}
.hint { font-size: 12px; color: var(--ink2); margin-top: 6px; line-height: 1.6; }
.custombox { display: none; margin-top: 8px; }
.custombox.on { display: block; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; border-radius: 12px; padding: 11px 18px;
  font-size: 14px; font-weight: 700; font-family: inherit;
  color: var(--on-primary); background: var(--blue); box-shadow: 0 3px 0 var(--blue-d);
  cursor: pointer; transition: transform .1s, filter .15s;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--blue-d); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.ghost { background: var(--panel); color: var(--ink2); box-shadow: 0 3px 0 var(--line); }
.btn.gold { background: var(--gold); color: #3d2a00; box-shadow: 0 3px 0 #d18f00; }
.btn.warn { background: #ff8c42; box-shadow: 0 3px 0 #d96c22; }
.btn.green { background: var(--green); box-shadow: 0 3px 0 #187f53; }
.btn.danger { background: var(--red); box-shadow: 0 3px 0 #b93a3e; }
.btn.sm { padding: 7px 12px; font-size: 13px; border-radius: 10px; }
.btn.lg { padding: 14px 26px; font-size: 16px; border-radius: 14px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.actions .btn { flex: 1 1 200px; }

.pill {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: 12px; font-weight: 700;
  background: color-mix(in srgb, var(--blue) 15%, var(--card)); color: var(--blue);
}
.pill.gray { background: var(--chip-bg); color: var(--ink2); }
.pill.green { background: color-mix(in srgb, var(--green) 16%, var(--card)); color: var(--green); }
.pill.orange { background: color-mix(in srgb, var(--orange) 16%, var(--card)); color: var(--orange); }

/* ---------------- 列表 ---------------- */
.list { border-top: 1px solid var(--soft-line); }
.item {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 11px 4px; border-bottom: 1px solid var(--soft-line);
}
.item .main { flex: 1 1 220px; min-width: 0; }
.item .main b { color: var(--heading); font-size: 14px; }
.item .main small { display: block; color: var(--ink3); font-size: 12px; margin-top: 2px; }
.item .ops { display: flex; gap: 6px; flex-wrap: wrap; }
.empty { padding: 26px 8px; text-align: center; color: var(--ink3); font-size: 14px; }

/* ---------------- 表格 ---------------- */
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.tbl th, table.tbl td {
  padding: 9px 8px; text-align: left; border-bottom: 1px solid var(--soft-line);
}
table.tbl th { font-size: 12px; color: var(--ink3); font-weight: 700; white-space: nowrap; }
table.tbl td.num { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--heading); }
table.tbl tr:last-child td { border-bottom: none; }
.scroll { overflow-x: auto; }

/* ---------------- 统计块 ---------------- */
.stats { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.stat {
  flex: 1 1 130px; background: var(--card); border-radius: 14px; padding: 14px 16px;
  box-shadow: 0 6px 18px rgba(30, 64, 120, .08);
}
.stat .k { font-size: 12px; color: var(--ink3); }
.stat .v { font-size: 24px; font-weight: 800; color: var(--heading);
           font-variant-numeric: tabular-nums; margin-top: 2px; }
.stat .v.blue { color: var(--blue); }
.stat .v.orange { color: var(--orange); }
.stat .v.green { color: var(--green); }

/* ---------------- 提示 ---------------- */
.msg {
  padding: 11px 14px; border-radius: 12px; font-size: 13.5px; line-height: 1.6;
  margin: 12px 0; display: none;
}
.msg.on { display: block; }
.msg.ok { background: color-mix(in srgb, var(--green) 15%, var(--card)); color: var(--green); }
.msg.err { background: color-mix(in srgb, var(--red) 14%, var(--card)); color: var(--red); }
.msg.info { background: color-mix(in srgb, var(--blue) 14%, var(--card)); color: var(--blue); }

.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  background: rgba(23, 42, 66, .93); color: #fff; padding: 10px 18px;
  border-radius: 99px; font-size: 14px; z-index: 120; opacity: 0;
  transition: opacity .22s; pointer-events: none; white-space: nowrap;
  max-width: 90vw; overflow: hidden; text-overflow: ellipsis;
}
.toast.on { opacity: 1; }

.loading { display: inline-block; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.4); border-top-color: #fff;
  animation: spin .7s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

footer.foot { margin-top: 26px; font-size: 12px; color: var(--ink3); line-height: 1.8; }

@media (max-width: 560px) {
  .wrap { padding: 12px 11px 48px; }
  .card { padding: 14px; border-radius: 15px; }
  .topbar { padding: 10px 12px; }
  .nav { width: 100%; margin-left: 0; }
  .nav a { flex: 1 1 auto; text-align: center; }
}