:root{
  --bg:#f5f7fb; --card:#fff; --ink:#1f2a44; --sub:#7a869a;
  --primary:#3b6cff; --primary-d:#2a55d6; --ok:#1fb56b; --warn:#f0a020;
  --line:#e6eaf2; --shadow:0 6px 24px rgba(31,42,68,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);color:var(--ink);-webkit-text-size-adjust:100%}
.hidden{display:none!important}
button{cursor:pointer;font:inherit}
input,select,textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--ink);outline:none;width:100%}
input:focus,select:focus{border-color:var(--primary)}
button.primary,button#loginBtn{background:var(--primary);color:#fff;border:none;border-radius:10px;
  padding:11px 16px;font-weight:600;transition:.15s}
button.primary:hover,button#loginBtn:hover{background:var(--primary-d)}
button.ghost{background:transparent;border:1px solid var(--line);border-radius:9px;padding:7px 12px;color:var(--sub)}
.tag{font-size:12px;background:#eef3ff;color:var(--primary);border-radius:20px;padding:2px 10px;margin-left:6px}

/* 登录 */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-card{background:var(--card);border-radius:18px;box-shadow:var(--shadow);padding:32px 28px;width:100%;max-width:360px}
.login-card h1{font-size:20px;margin:0 0 4px}
.login-card .sub{color:var(--sub);font-size:13px;margin:0 0 20px}
.login-card input{margin-bottom:12px}
.login-card button{width:100%;margin-top:4px}
.login-card .hint{color:var(--sub);font-size:12px;margin-top:16px;line-height:1.6}
.msg{font-size:13px;min-height:18px;margin-top:8px;color:#e23}
.msg.ok{color:var(--ok)}

/* 主界面 */
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;
  background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar .brand{font-weight:700}
.topbar .user{display:flex;align-items:center;gap:8px}
.nav{display:flex;gap:8px;padding:12px 18px;overflow-x:auto;background:var(--card);border-bottom:1px solid var(--line)}
.nav button{white-space:nowrap;background:#f0f3fa;border:none;border-radius:20px;padding:8px 16px;color:var(--sub);font-weight:600}
.nav button.active{background:var(--primary);color:#fff}
.view{padding:18px;max-width:1100px;margin:0 auto}

.card{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.card h3{margin:0 0 14px;font-size:16px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.row>*{flex:1;min-width:160px}
label{font-size:12px;color:var(--sub);display:block;margin-bottom:5px}

/* 看板表格 */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--line)}
th{color:var(--sub);font-weight:600;font-size:12px}
td .mini{font-size:12px;color:var(--sub)}
.pill{display:inline-block;background:#eef3ff;color:var(--primary);border-radius:8px;padding:2px 8px;font-size:12px;margin:2px 4px 2px 0}

/* 列表项 */
.item{display:flex;justify-content:space-between;align-items:center;padding:12px;border:1px solid var(--line);
  border-radius:12px;margin-bottom:10px;gap:12px;flex-wrap:wrap}
.item .meta{font-size:13px;color:var(--sub)}
.item .acts{display:flex;gap:8px}
audio{width:100%;max-width:320px}
a.dl{color:var(--primary);text-decoration:none;font-size:13px}

/* 练琴打卡 */
.timer{font-size:34px;font-weight:700;font-variant-numeric:tabular-nums;margin:8px 0}
.rec-dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:#e23;margin-right:8px;
  animation:blink 1s infinite}
@keyframes blink{50%{opacity:.2}}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-top:8px}
.stat{background:#f7f9ff;border-radius:12px;padding:14px}
.stat .n{font-size:22px;font-weight:700;color:var(--primary)}
.stat .l{font-size:12px;color:var(--sub)}
@media(max-width:560px){.row>*{min-width:100%}.view{padding:12px}}

/* 转写状态与文字 */
.pill.ok{background:#e8f7ee;color:#1a9e54}
.pill.err{background:#fdecec;color:#d33}
.transcript{margin-top:8px;padding:10px 12px;background:#fafbff;border-left:3px solid var(--primary);
  border-radius:6px;font-size:14px;line-height:1.7;white-space:pre-wrap;color:#223}