:root {
  --bg: #080F1C; --panel: #0F1D33; --card: #132540; --border: #1C3050;
  --input: #0A1626; --inputb: #22395C; --white: #EAF2FB; --muted: #9DB4D0;
  --dim: #8FA6C2; --accent: #4AA8F0; --green: #37D67A; --amber: #F5A524;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--white); font-family: "Segoe UI", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }

/* ---- shell ---- */
.shell { display: flex; min-height: 100vh; }
.side { width: 240px; background: #0A1526; border-right: 1px solid var(--border); padding: 22px 0; display: flex; flex-direction: column; }
.brand { font-size: 22px; font-weight: bold; padding: 0 24px 4px; }
.brand .accent { color: var(--accent); }
.brand .sub { font-size: 12px; color: var(--dim); font-weight: normal; letter-spacing: 1px; }
.who { padding: 6px 24px 16px; color: var(--dim); font-size: 12.5px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.nav { display: block; padding: 11px 24px; color: var(--muted); font-size: 14.5px; border-left: 3px solid transparent; }
.nav:hover { background: #12233F; color: var(--white); }
.nav.active { color: var(--white); border-left-color: var(--accent); background: #0E1C30; }
.logout { margin-top: auto; padding: 16px 24px 0; }
.logout button { background: transparent; border: 1px solid var(--border); color: var(--muted); padding: 8px 16px; border-radius: 8px; cursor: pointer; }
.logout button:hover { color: var(--white); border-color: var(--accent); }
.content { flex: 1; padding: 30px 40px; overflow: auto; }
.center { min-height: 100vh; display: flex; align-items: center; justify-content: center; }

/* ---- page ---- */
.page h1 { font-size: 24px; margin: 0 0 4px; }
.page h2 { font-size: 16px; margin: 28px 0 10px; color: var(--white); }
.muted { color: var(--muted); } .small { font-size: 12px; }
.error { color: var(--amber); } .okmsg { color: var(--green); }
.inline { margin-left: 14px; }

/* ---- stat cards ---- */
.cards { display: flex; gap: 16px; flex-wrap: wrap; margin: 18px 0; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px 22px; min-width: 150px; }
.stat .num { font-size: 30px; font-weight: bold; color: var(--accent); }
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ---- tables ---- */
.grid { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; font-size: 13.5px; }
.grid th { text-align: left; background: #14284A; color: var(--white); padding: 10px 12px; font-weight: 600; }
.grid td { border-top: 1px solid var(--border); padding: 9px 12px; color: #D4E1F0; }

/* ---- forms ---- */
.field { width: 100%; background: var(--input); border: 1px solid var(--inputb); color: var(--white); border-radius: 8px; padding: 9px 12px; font-size: 14px; margin-bottom: 12px; }
.field.code { width: 140px; text-align: center; font-size: 18px; letter-spacing: 3px; }
label { display: block; color: var(--muted); font-size: 12.5px; margin-bottom: 5px; }
button.primary { background: var(--accent); color: #06182B; border: 0; border-radius: 8px; padding: 11px 22px; font-size: 15px; font-weight: 600; cursor: pointer; }
button.primary:hover { filter: brightness(1.08); }
.addform { max-width: 640px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 22px; margin-top: 8px; }
.addform .row { display: flex; gap: 16px; }
.addform .row > div { flex: 1; }

/* ---- login ---- */
.login { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login .card { width: 380px; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 34px; }
.login .logo { font-size: 26px; font-weight: bold; margin-bottom: 4px; }
.login .logo .accent { color: var(--accent); }
.login .logo .sub { font-size: 13px; color: var(--dim); font-weight: normal; }
.login .qr { width: 190px; height: 190px; background: #fff; border-radius: 8px; padding: 6px; margin: 10px 0; }
.login button.primary { width: 100%; margin-top: 6px; }
code { background: #0A1626; padding: 2px 6px; border-radius: 4px; font-size: 12px; word-break: break-all; }

/* ---- inline row actions ---- */
.actions { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.actions form { display: inline; margin: 0; }
.actions button { background: #14284A; color: var(--muted); border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px; font-size: 12px; cursor: pointer; }
.actions button:hover { color: var(--white); border-color: var(--accent); }
.actions select { background: var(--input); color: var(--white); border: 1px solid var(--inputb); border-radius: 6px; padding: 3px 6px; font-size: 12px; }