:root {
  --ink:        #16233a;
  --slate:      #4c5a70;
  --line:       #dde3ec;
  --paper:      #f6f8fb;
  --card:       #ffffff;
  --accent:     #1f6f5c;
  --accent-ink: #ffffff;
  --amber:      #b5762a;
  --danger:     #b3413a;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "Inter", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 28px;
  background: var(--ink);
  color: #fff;
}
.topbar .brand {
  font-weight: 700;
  letter-spacing: .04em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.topbar .brand small {
  font-weight: 400;
  color: #9fb0c9;
  font-size: 12px;
}
.topbar .user {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  flex-wrap: wrap;
}
.topbar .user a {
  color: #cfd9ea;
  text-decoration: none;
  border: 1px solid #3a4c6b;
  padding: 6px 12px;
  border-radius: 6px;
  white-space: nowrap;
}
.topbar .user a:hover { background: #22314d; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.grid {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 24px;
  align-items: start;
}
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}
.card h2 {
  margin: 0 0 18px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--slate);
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--slate);
}
input[type=text], input[type=number], input[type=date], input[type=password] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 16px;
  background: #fbfcfe;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input[readonly] { background: #eef1f6; color: var(--slate); }

button, .btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  padding: 11px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button:hover, .btn:hover { background: #185848; }

.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-error   { background: #fbeae8; color: var(--danger); border: 1px solid #f0c7c2; }
.alert-success { background: #eaf5ee; color: #1c6b3f; border: 1px solid #c3e6cf; }

.result-no {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--accent);
  background: #eef6f3;
  border: 1px dashed #a9d2c4;
  border-radius: 8px;
  padding: 18px;
  text-align: center;
  margin-bottom: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
th {
  color: var(--slate);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
td.no { font-family: var(--mono); font-weight: 600; color: var(--accent); }
tbody tr:hover { background: #f9fbfd; }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------- Mobile ---------- */
@media (max-width: 700px) {
  .wrap { padding: 18px 14px 40px; }
  .grid { gap: 16px; }
  .card { padding: 16px; border-radius: 8px; }
  .card h2 { font-size: 14px; margin-bottom: 14px; }

  .topbar { padding: 12px 16px; }
  .topbar .brand { font-size: 15px; }
  .topbar .user { font-size: 13px; gap: 8px; width: 100%; justify-content: space-between; }
  .topbar .user a { padding: 6px 10px; font-size: 13px; }

  /* Inputs at 16px prevent iOS Safari from auto-zooming on focus */
  input[type=text], input[type=number], input[type=date],
  input[type=password], input[type=month] {
    font-size: 16px;
    padding: 12px;
  }
  button, .btn { width: 100%; text-align: center; padding: 13px; font-size: 15px; }

  .result-no { font-size: 22px; padding: 14px; word-break: break-all; }

  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar h2 { font-size: 14px; }
  .toolbar form { flex-wrap: wrap; }
  .toolbar form input[type=month] { flex: 1 1 auto; min-width: 0; }
  .toolbar form button, .toolbar form a.btn { flex: 0 0 auto; width: auto; padding: 10px 14px; }

  /* Turn each table row into a stacked card instead of a wide, scrolling table */
  .table-scroll { overflow-x: visible; }
  table, thead, tbody, th, td, tr { display: block; width: 100%; }
  thead { position: absolute; left: -9999px; top: -9999px; } /* keep for screen readers, hide visually */
  table { border: none; }
  tbody tr {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 4px 14px;
    margin-bottom: 12px;
  }
  tbody tr:hover { background: #fff; }
  td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
    white-space: normal;
    text-align: right;
  }
  td:last-child { border-bottom: none; }
  td::before {
    content: attr(data-label);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--slate);
    text-align: left;
    flex-shrink: 0;
  }
  td.no { font-size: 15px; }
  tfoot tr { background: transparent; border: none; }
  tfoot td { justify-content: space-between; }
  tfoot td:empty { display: none; }

  .login-wrap { padding: 20px; }
  .login-card { width: 100%; max-width: 360px; padding: 24px 22px; }
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  gap: 12px;
  flex-wrap: wrap;
}
.toolbar form { display: flex; gap: 8px; align-items: center; }
.toolbar input[type=month] {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--ink), #223151);
}
.login-card {
  width: 360px;
  background: #fff;
  border-radius: 10px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.login-card h1 {
  font-size: 20px;
  margin: 0 0 4px;
}
.login-card p.sub {
  color: var(--slate);
  font-size: 13px;
  margin: 0 0 22px;
}
.login-card button { width: 100%; padding: 12px; }
.hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--slate);
  text-align: center;
}