:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #1d2630;
  --muted: #6d7885;
  --line: #cbd5df;
  --accent: #116a5c;
  --accent-strong: #0d5147;
  --danger-bg: #fff1f0;
  --danger-text: #a1261d;
  --ok-bg: #eaf7ee;
  --ok-text: #1b6b3a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.topbar {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 24px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-weight: 750;
  font-size: 17px;
}

.navlinks {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user {
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 28px auto;
}

.auth-panel,
.panel,
.empty-state {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(29, 38, 48, 0.05);
}

.auth-panel {
  width: min(420px, 100%);
  margin: 72px auto;
  padding: 28px;
}

.panel {
  padding: 22px;
}

.empty-state {
  display: grid;
  gap: 18px;
  place-items: center;
  min-height: 280px;
  padding: 36px;
}

h1 {
  margin: 0 0 18px;
  font-size: 24px;
  letter-spacing: 0;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-head h1 {
  margin: 0;
}

.form-stack,
.upload-box {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  color: #344150;
  font-weight: 600;
}

input,
select {
  width: 100%;
  min-height: 40px;
  border: 1px solid #cbd5df;
  border-radius: 6px;
  padding: 9px 11px;
  background: #fff;
  color: var(--text);
  font: inherit;
}

input:focus,
select:focus {
  outline: 2px solid rgba(17, 106, 92, 0.18);
  border-color: var(--accent);
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 9px 15px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover,
.button:hover {
  background: var(--accent-strong);
  text-decoration: none;
}

.button.ghost {
  background: #fff;
  color: var(--accent);
}

.button.ghost:hover {
  background: #edf5f3;
}

.muted {
  margin: 18px 0 0;
  color: var(--muted);
}

.notice {
  border-radius: 6px;
  padding: 11px 12px;
  margin-bottom: 16px;
}

.notice.error {
  background: var(--danger-bg);
  color: var(--danger-text);
}

.notice.ok {
  background: var(--ok-bg);
  color: var(--ok-text);
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  padding: 16px;
  background: #f8fafb;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 16px;
}

.sheet-select {
  grid-column: span 2;
}

.range-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.filter-actions {
  display: flex;
  align-items: end;
  gap: 10px;
}

.pager,
.table-count {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 14px 0;
  color: var(--muted);
}

.pager a:last-child {
  justify-self: end;
}

.table-count {
  display: block;
}

.table-wrap {
  overflow: visible;
  border: 1px solid #9eabb7;
  border-radius: 8px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 560px;
  table-layout: auto;
}

.data-table {
  border-collapse: collapse !important;
  border: 1px solid #7f8c99 !important;
}

th,
td {
  border-right: 1px solid #9eabb7;
  border-bottom: 1px solid #9eabb7;
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
}

thead {
  position: sticky;
  top: 0;
  z-index: 100;
}

thead th {
  position: sticky !important;
  top: 0 !important;
  z-index: 100 !important;
  background: #e2e9ef !important;
  border: 1px solid #7f8c99 !important;
  color: #263240;
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 2px 0 #7f8c99;
}

.sticky-header {
  position: sticky !important;
  top: 0 !important;
  z-index: 100 !important;
  background: #e2e9ef !important;
  border: 1px solid #7f8c99 !important;
}

.data-table td {
  border: 1px solid #9eabb7 !important;
}

thead th:first-child,
tbody td:first-child {
  border-left: 1px solid #9eabb7;
}

thead tr:first-child th {
  border-top: 1px solid #9eabb7;
}

tbody tr:hover {
  background: #f7fbfa;
}

.no-data {
  text-align: center;
  color: var(--muted);
  padding: 28px;
}

@media (max-width: 700px) {
  .topbar {
    flex-wrap: wrap;
    gap: 10px 16px;
    padding: 12px 16px;
  }

  .user {
    width: 100%;
    margin-left: 0;
  }

  .shell {
    width: calc(100vw - 20px);
    margin: 14px auto;
  }

  .auth-panel,
  .panel {
    padding: 18px;
  }

  .panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .sheet-select {
    grid-column: auto;
  }

  .filter-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .pager {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .pager a:last-child {
    justify-self: stretch;
  }
}