:root {
  --bg: #090807;
  --panel: rgba(12, 11, 9, 0.72);
  --paper: #f6edda;
  --paper-soft: #d8c9ad;
  --paper-dim: #8e806c;
  --line: rgba(246, 237, 218, 0.14);
  --line-strong: rgba(246, 237, 218, 0.30);
  --red: #a83224;
  --red-soft: #c24c3a;
  --font-cn: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-en: "EB Garamond", "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background:
    radial-gradient(circle at 78% 18%, rgba(92, 123, 99, 0.18), transparent 24rem),
    radial-gradient(circle at 72% 84%, rgba(168, 50, 36, 0.12), transparent 22rem),
    var(--bg);
  font-family: var(--font-cn);
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
.import-btn {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 32%, rgba(92, 123, 99, 0.18), transparent 20rem),
    rgba(9, 8, 7, 0.94);
  backdrop-filter: blur(22px);
}

.auth-card {
  position: relative;
  width: min(430px, 100%);
  padding: 34px;
  border: 1px solid var(--line);
  background: rgba(12, 11, 9, 0.82);
}

.auth-card::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(246, 237, 218, 0.06);
  pointer-events: none;
}

.auth-card h1 {
  writing-mode: horizontal-tb;
  font-size: 34px;
  letter-spacing: 0.12em;
}

.auth-copy {
  margin: 16px 0 26px;
  color: var(--paper-dim);
  line-height: 1.8;
}

.auth-submit {
  width: 100%;
  min-height: 48px;
  margin-top: 24px;
  color: var(--paper);
  border: 1px solid rgba(194, 76, 58, 0.62);
  background: rgba(168, 50, 36, 0.28);
}

.auth-error {
  min-height: 22px;
  margin: 14px 0 0;
  color: var(--red-soft);
}

.admin-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
}

.admin-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 34px;
  display: grid;
  align-content: space-between;
  border-right: 1px solid var(--line);
  background: rgba(9, 8, 7, 0.46);
  backdrop-filter: blur(18px);
}

.back-home {
  color: var(--paper-soft);
  text-decoration: none;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--paper-dim);
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.28em;
}

h1 {
  margin: 0;
  writing-mode: vertical-rl;
  font-size: 52px;
  letter-spacing: 0.18em;
}

.rail-copy {
  max-width: 210px;
  margin: 28px 0 0;
  color: var(--paper-dim);
  line-height: 1.8;
}

.status {
  margin-top: 16px;
  color: var(--paper-dim);
  font-size: 13px;
}

.logout-btn {
  padding: 0;
  color: var(--paper-dim);
  border: 0;
  background: transparent;
}

.logout-btn:hover {
  color: var(--paper);
}

.admin-board {
  padding: 34px;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 0 24px;
  background: linear-gradient(var(--bg) 70%, transparent);
}

.toolbar > button,
.toolbar > .import-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 58px;
  min-height: 58px;
  padding: 0 18px;
  color: var(--paper);
  border: 1px solid var(--line-strong);
  background: transparent;
  line-height: 1;
  vertical-align: top;
  margin: 0;
  appearance: none;
}

.toolbar .primary {
  background: rgba(168, 50, 36, 0.28);
  border-color: rgba(194, 76, 58, 0.62);
}

.toolbar .danger {
  color: var(--paper-dim);
}

.import-btn input {
  display: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(20px);
}

.panel.wide {
  grid-column: 1 / -1;
}

.panel-num {
  position: absolute;
  right: 24px;
  top: 20px;
  color: rgba(246, 237, 218, 0.13);
  font-family: var(--font-en);
  font-size: 46px;
}

h2 {
  margin: 0 0 24px;
  font-size: 24px;
  letter-spacing: 0.14em;
}

label {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  color: var(--paper-dim);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.note {
  margin: 18px 0 0;
  color: var(--paper-dim);
  font-size: 13px;
  line-height: 1.8;
}

input,
textarea,
select {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  background: transparent;
  color: var(--paper);
  font-size: 18px;
  line-height: 1.6;
}

input[type="password"] {
  min-height: 38px;
  letter-spacing: 0.12em;
}

input:disabled {
  color: var(--paper-soft);
  opacity: 0.72;
}

select {
  appearance: none;
  min-height: 38px;
}

textarea {
  resize: vertical;
  min-height: 72px;
}

input:focus,
textarea:focus,
select:focus {
  border-bottom-color: var(--red-soft);
}

.secret-box {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid rgba(194, 76, 58, 0.34);
  background: rgba(168, 50, 36, 0.10);
}

.secret-box strong {
  display: block;
  margin-bottom: 8px;
}

.secret-box p {
  margin: 0 0 10px;
  color: var(--paper-dim);
  line-height: 1.7;
}

.secret-box code {
  color: var(--paper-soft);
  word-break: break-word;
}

.three-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

@media (max-width: 900px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-rail {
    position: static;
    height: auto;
    gap: 28px;
  }

  h1 {
    writing-mode: horizontal-tb;
  }

  .grid,
  .three-cols {
    grid-template-columns: 1fr;
  }

  .admin-board {
    padding: 18px;
  }
}