:root {
  color-scheme: dark;
  --bg: #101816;
  --panel: #182420;
  --text: #edf4ef;
  --muted: #a7b9ad;
  --line: #33473c;
  --green: #99dcab;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 5vw;
  border-bottom: 1px solid var(--line);
  gap: 18px;
  flex-wrap: wrap;
}
#brand {
  font-size: 23px;
  text-decoration: none;
  font-weight: 650;
}
small,
.muted {
  color: var(--muted);
}
nav {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
a {
  color: var(--green);
}
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 12px;
}
h2 {
  font-size: 21px;
}
p {
  margin: 10px 0 20px;
}
button,
.button {
  background: var(--green);
  color: #0b2414;
  border: 0;
  border-radius: 9px;
  padding: 10px 17px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}
button.danger {
  background: #522522;
  color: #ffd2c8;
}
button:disabled {
  opacity: 0.5;
  cursor: wait;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
}
input,
textarea,
select {
  font: inherit;
  color: var(--text);
  border: 1px solid var(--line);
  background: #101b16;
  border-radius: 7px;
  padding: 10px;
  width: 100%;
}
input[type="checkbox"] {
  width: auto;
}
label {
  display: block;
  margin: 15px 0 5px;
}
textarea {
  min-height: 100px;
  resize: vertical;
}
.auth {
  max-width: 450px;
  margin: 30px auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 30px;
}
.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 20px 0;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  background: var(--panel);
}
.book {
  display: block;
  text-decoration: none;
  color: var(--text);
}
.book:hover {
  border-color: var(--green);
}
.toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
}
.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 650px;
}
th,
td {
  text-align: left;
  border-bottom: 1px solid var(--line);
  padding: 12px 15px;
  vertical-align: top;
}
td {
  white-space: pre-wrap;
  max-width: 320px;
  word-break: break-word;
}
th {
  color: var(--muted);
}
td button {
  font-size: 12px;
  padding: 6px 10px;
}
.review {
  max-width: 760px;
  margin: 20px auto;
}
.face {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 24px;
  min-height: 150px;
}
.answer {
  border-top: 1px solid var(--line);
  padding-top: 25px;
  margin-top: 25px;
}
.metrics {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}
.metric strong {
  display: block;
  font-size: 34px;
  color: var(--green);
}
#notice {
  position: fixed;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  background: #254331;
  color: var(--text);
  padding: 14px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  max-width: 90vw;
  z-index: 20;
}
#notice.error {
  background: #522522;
}
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 14px;
  width: min(640px, 94vw);
  max-height: 90vh;
  padding: 25px;
}
dialog::backdrop {
  background: #000a;
}
pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: var(--bg);
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.empty {
  padding: 35px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  text-align: center;
  color: var(--muted);
}
.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}
.status {
  color: var(--green);
  font-size: 13px;
}
@media (max-width: 650px) {
  main {
    padding: 25px 15px;
  }
  .auth {
    padding: 20px;
  }
  .face {
    font-size: 21px;
  }
  h1 {
    font-size: 26px;
  }
}