:root{
  --navy:#152242; --navy2:#1e2f57; --gold:#c9a24a; --bg:#f4f6fb; --card:#fff;
  --line:#e2e7f0; --muted:#6b7690; --text:#1c2333;
  --ok:#2e7d5b; --okbg:#e4f4ec; --warn:#b7791f; --warnbg:#fbf1dd;
  --danger:#b23b3b; --dangerbg:#fbe6e6; --success:#1f6f43; --successbg:#dff3e6;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',system-ui,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:#fff;width:100%}
a{color:var(--navy2)}
.hidden{display:none!important}

/* Login */
#login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#152242,#28407a)}
.login-card{background:#fff;padding:34px;border-radius:14px;width:380px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.brand{font-weight:800;font-size:22px;color:var(--navy);letter-spacing:.5px}
.brand span{color:var(--gold)}
.login-card h2{margin:6px 0 2px;font-size:16px}
.login-card p.sub{color:var(--muted);margin:0 0 18px;font-size:13px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;font-weight:600}
.btn{background:var(--navy);color:#fff;border:none;padding:10px 16px;border-radius:7px;font-weight:600}
.btn:hover{background:var(--navy2)}
.btn.gold{background:var(--gold);color:#1c1c1c}
.btn.sm{padding:5px 10px;font-size:12px;border-radius:5px}
.btn.ghost{background:#eef1f7;color:var(--navy)}
.btn.danger{background:var(--danger)}
.btn.ok{background:var(--ok)}
.err{color:var(--danger);font-size:13px;margin-top:8px;min-height:16px}
.hint{background:#f7f9fc;border:1px dashed var(--line);border-radius:8px;padding:10px;margin-top:16px;font-size:12px;color:var(--muted)}
.hint code{background:#eceff5;padding:1px 5px;border-radius:4px;color:var(--navy)}

/* App layout */
#app{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--navy);color:#dfe5f2;padding:18px 0;flex-shrink:0}
.sidebar .brand{color:#fff;padding:0 20px 14px;font-size:19px;border-bottom:1px solid rgba(255,255,255,.1)}
.nav a{display:flex;align-items:center;gap:10px;padding:11px 20px;color:#c3cbe0;text-decoration:none;font-weight:500;border-left:3px solid transparent}
.nav a:hover{background:rgba(255,255,255,.06)}
.nav a.active{background:rgba(201,162,74,.16);color:#fff;border-left-color:var(--gold)}
.nav a .badge{margin-left:auto;background:var(--gold);color:#1c1c1c;border-radius:10px;padding:1px 7px;font-size:11px;font-weight:700}
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:12px 24px;display:flex;align-items:center;gap:16px}
.topbar .who{font-weight:700}
.topbar .who small{display:block;color:var(--muted);font-weight:400}
.topbar .spacer{flex:1}
.content{padding:24px;overflow:auto}
.page-title{font-size:20px;font-weight:800;color:var(--navy);margin:0 0 2px}
.page-sub{color:var(--muted);margin:0 0 18px;font-size:13px}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}
.card h3{margin:0 0 14px;font-size:15px;color:var(--navy);display:flex;align-items:center;gap:8px}
.grid{display:grid;gap:16px}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid.c4,.grid.c3,.grid.c2{grid-template-columns:1fr}}

.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
.stat .lbl{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.stat .val{font-size:26px;font-weight:800;color:var(--navy);margin-top:4px}
.stat .val small{font-size:13px;color:var(--muted);font-weight:500}
.gradebox{border-radius:12px;padding:16px;color:#fff}
.gradebox .g{font-size:40px;font-weight:900;line-height:1}
.tone-success{background:var(--success)} .tone-ok{background:#2e7d5b}
.tone-warn{background:var(--warn)} .tone-danger{background:var(--danger)}

/* tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:600;font-size:12px}
tbody tr:nth-child(even){background:#fafbfe}
tr:hover td{background:#f2f5fb}
td .mini{color:var(--muted);font-size:11px}
.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700}
.pill.approved,.pill.success{background:var(--successbg);color:var(--success)}
.pill.pending{background:var(--warnbg);color:var(--warn)}
.pill.draft{background:#eef1f7;color:var(--muted)}
.pill.rejected,.pill.danger{background:var(--dangerbg);color:var(--danger)}
.pill.ok{background:var(--okbg);color:var(--ok)}
.pill.warn{background:var(--warnbg);color:var(--warn)}
.right{text-align:right}
.tools{display:flex;gap:6px;flex-wrap:wrap}
.tablewrap{overflow:auto;border-radius:10px;border:1px solid var(--line)}
.tablewrap table th:first-child,.tablewrap table td:first-child{padding-left:14px}

/* row weight bar */
.bar{height:6px;background:#eceff5;border-radius:6px;overflow:hidden;margin-top:4px}
.bar>span{display:block;height:100%;background:var(--gold)}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(15,22,40,.55);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:#fff;border-radius:12px;padding:22px;width:560px;max-width:100%;max-height:90vh;overflow:auto}
.modal h3{margin:0 0 14px;color:var(--navy)}
.modal .row{display:flex;gap:12px}.modal .row>*{flex:1}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.notice{padding:10px 12px;border-radius:8px;font-size:13px;margin-bottom:14px}
.notice.info{background:#eef3fb;color:#2b4a86}
.rate-row{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.rate-row .name{width:120px;font-weight:600}
.stars{display:flex;gap:4px}
.stars button{width:30px;height:30px;border:1px solid var(--line);background:#fff;border-radius:6px;font-weight:700}
.stars button.on{background:var(--gold);color:#fff;border-color:var(--gold)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:6px}
.legend b{color:var(--text)}