:root {
  color-scheme: light;
  --bg: #101112;
  --panel: #f7f7f2;
  --ink: #171a1f;
  --muted: #68717a;
  --line: #d8ddd8;
  --accent: #0f766e;
  --accent-strong: #0a4f4a;
  --warn: #a15c16;
  --error: #b42318;
  --shadow: 0 30px 90px rgba(3, 6, 10, 0.36);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 18% 16%, rgba(15, 118, 110, 0.22), transparent 30%),
    radial-gradient(circle at 82% 84%, rgba(175, 132, 70, 0.14), transparent 26%),
    linear-gradient(135deg, #17191d 0%, #0e0f11 52%, #181816 100%),
    var(--bg);
  color: var(--ink);
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  width: min(920px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 32px 0;
}

.panel {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), transparent 38%),
    var(--panel);
  box-shadow: var(--shadow);
  padding: 32px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  margin: 12px 0 0;
  color: #3d424a;
  font-size: 17px;
  font-weight: 700;
}

.notice {
  margin: 12px 0 0;
  border-left: 4px solid var(--accent);
  padding: 10px 12px;
  color: #123f3d;
  background: rgba(15, 118, 110, 0.09);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.55;
  font-weight: 700;
}

.form {
  margin-top: 28px;
}

label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.inputRow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 12px;
}

input {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 16px;
  color: var(--ink);
  background: #fffdfa;
  outline: none;
}

textarea {
  width: 100%;
  min-height: 118px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--ink);
  background: #fffdfa;
  outline: none;
  resize: vertical;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.14);
}

textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.14);
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 16px;
  background: linear-gradient(180deg, #128179, #0a5852);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  transition:
    background 0.16s ease,
    transform 0.16s ease;
}

button:hover {
  background: linear-gradient(180deg, #159188, #083f3b);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.message {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--muted);
}

.message.error {
  color: var(--error);
}

.message.warn {
  color: var(--warn);
}

.result {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.resultHeader {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.resultHeader p {
  margin: 0;
  color: var(--accent-strong);
  font-size: 18px;
  font-weight: 850;
}

time {
  color: var(--muted);
  font-size: 13px;
}

.credential {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  gap: 12px;
  align-items: center;
  min-height: 74px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdfa;
  padding: 14px;
}

.credential + .credential {
  margin-top: 12px;
}

.credential span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.credential strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 19px;
  letter-spacing: 0;
}

.credential button {
  background: #20262e;
}

.credential button:hover {
  background: #11161b;
}

@media (max-width: 680px) {
  .panel {
    padding: 22px;
  }

  .topbar,
  .resultHeader {
    display: block;
  }

  .inputRow,
  .credential {
    grid-template-columns: 1fr;
  }

  .inputRow button,
  .credential button {
    width: 100%;
  }
}

.adminBody {
  background: #f4f6f8;
}

.loginShell {
  width: min(480px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 32px 0;
}

.loginPanel {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
  padding: 28px;
}

.loginPanel h1 {
  font-size: 36px;
}

.loginForm {
  margin-top: 22px;
}

.loginForm input,
.loginForm button {
  margin-bottom: 14px;
}

.loginForm button {
  width: 100%;
}

.adminShell {
  width: min(1440px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.adminHeader {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.adminHeader h1 {
  font-size: clamp(28px, 4vw, 46px);
}

.adminActions {
  display: grid;
  grid-template-columns: minmax(220px, 340px) 92px 112px 92px;
  gap: 10px;
}

.adminActions input {
  min-height: 46px;
  background: #fff;
}

.adminSummary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.adminSummary span {
  border: 1px solid #d8dee6;
  border-radius: 8px;
  padding: 10px 13px;
  background: #fff;
  color: var(--muted);
  font-weight: 700;
}

.adminSummary strong {
  color: var(--ink);
}

.bulkTools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 160px;
  gap: 12px;
  align-items: end;
  margin-bottom: 14px;
  border: 1px solid #d8dee6;
  border-radius: 8px;
  background: #fff;
  padding: 14px;
}

.bulkTools label {
  grid-column: 1 / -1;
  margin-bottom: -2px;
}

.bulkActions {
  display: grid;
  gap: 10px;
}

.dangerButton {
  background: #b42318;
}

.dangerButton:hover {
  background: #8f1f17;
}

.sheet {
  overflow: auto;
  border: 1px solid #d5dbe3;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(31, 37, 34, 0.08);
}

table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  table-layout: fixed;
}

th,
td {
  border-right: 1px solid #d5dbe3;
  border-bottom: 1px solid #d5dbe3;
  padding: 9px 12px;
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #eef2f6;
  color: #2a3138;
  font-size: 14px;
}

td {
  height: 42px;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 16px;
}

tbody tr:nth-child(odd) {
  background: #fff0ea;
}

tbody tr:nth-child(even) {
  background: #ffffff;
}

tbody tr.used {
  color: #1e252b;
}

tbody tr:not(.used) {
  color: #5f6871;
}

th:nth-child(1),
td:nth-child(1) {
  width: 56px;
  text-align: center;
}

th:nth-child(2),
td:nth-child(2) {
  width: 92px;
  text-align: center;
}

th:nth-child(3),
td:nth-child(3) {
  width: 210px;
}

th:nth-child(4),
td:nth-child(4) {
  width: 330px;
}

th:nth-child(5),
td:nth-child(5) {
  width: 150px;
}

th:nth-child(6),
td:nth-child(6) {
  width: 110px;
}

th:nth-child(7),
td:nth-child(7) {
  width: 180px;
}

td a {
  color: #087ddf;
  font-weight: 700;
}

.check {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 2px solid #111;
  border-radius: 5px;
  background: #fff;
}

.check.checked {
  background: #050505;
}

.check.checked::after {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 3px solid #fff;
  border-bottom: 3px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

@media (max-width: 760px) {
  .adminHeader,
  .adminActions {
    display: block;
  }

  .adminActions {
    margin-top: 16px;
  }

  .adminActions button,
  .bulkActions button {
    width: 100%;
    margin-top: 10px;
  }

  .bulkTools {
    grid-template-columns: 1fr;
  }
}