* { box-sizing: border-box; margin: 0; }
:root {
  --bg: #0f1420; --panel: #1a2233; --panel2: #232e45; --text: #e8ecf5;
  --muted: #93a0b8; --line: #2d3a55; --accent: #3b82f6; --danger: #dc2626;
}
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, "Segoe UI", sans-serif; min-height: 100vh; }
.hidden { display: none !important; }
.muted { color: var(--muted); font-weight: 400; }
.error { color: #f87171; min-height: 1.2em; margin-top: 8px; }
.center-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.login-card { width: 360px; display: flex; flex-direction: column; gap: 12px; }
.login-card h1 { font-size: 22px; }
label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 13px; }
input, select { background: var(--panel2); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font-size: 15px; }
.btn { border: 0; border-radius: 8px; padding: 10px 16px; font-size: 15px; font-weight: 700; cursor: pointer; color: #fff; background: #475569; }
.btn.primary { background: var(--accent); }
.btn.danger { background: var(--danger); }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--muted); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.big { padding: 16px; font-size: 18px; width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

header { display: flex; align-items: center; gap: 20px; padding: 10px 20px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 17px; }
nav { display: flex; gap: 6px; flex: 1; }
.tab { background: transparent; border: 0; color: var(--muted); font-weight: 700; padding: 8px 14px; border-radius: 8px; cursor: pointer; }
.tab.active { background: var(--panel2); color: var(--text); }
.userbox { display: flex; align-items: center; gap: 10px; }
main { padding: 20px; max-width: 1100px; margin: 0 auto; }
h2 { margin: 18px 0 12px; font-size: 18px; }
.pill { background: var(--panel2); border-radius: 999px; padding: 2px 10px; font-size: 13px; }

.code-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-bottom: 16px; }
.code-btn { border: 3px solid transparent; border-radius: 12px; padding: 18px 10px; color: #fff; font-weight: 800; font-size: 16px; cursor: pointer; text-align: center; }
.code-btn small { display: block; font-weight: 500; font-size: 11px; opacity: .85; margin-top: 4px; }
.code-btn.selected { border-color: #fff; box-shadow: 0 0 0 3px rgba(255,255,255,.25); }
.form-card { display: flex; flex-direction: column; gap: 14px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.board-list { display: flex; flex-direction: column; gap: 12px; }
.act-card { border-left: 8px solid var(--accent); }
.act-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.act-code { font-weight: 800; font-size: 17px; padding: 3px 12px; border-radius: 8px; color: #fff; }
.act-loc { font-weight: 700; }
.act-time { margin-left: auto; color: var(--muted); font-size: 13px; }
.recips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.recip { background: var(--panel2); border-radius: 8px; padding: 4px 10px; font-size: 13px; }
.recip b { font-weight: 700; }
.st-pending { color: #fbbf24; } .st-acknowledged { color: #60a5fa; }
.st-responding { color: #34d399; } .st-arrived { color: #4ade80; } .st-declined { color: #f87171; }
.act-actions { margin-top: 10px; display: flex; gap: 8px; }

.inline-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.inline-form input, .inline-form select { flex: 1; min-width: 130px; }
.chk { flex-direction: row; align-items: center; gap: 6px; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-size: 12px; text-transform: uppercase; }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.7); display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal-card { width: 420px; max-width: 92vw; }
.modal-card .row { display: flex; gap: 10px; margin-top: 16px; }

@media (max-width: 700px) { .grid2 { grid-template-columns: 1fr; } main { padding: 12px; } }