:root {
  color-scheme: light;
  --bg: #f6f7f8;
  --surface: #ffffff;
  --sidebar: #10233c;
  --sidebar-hover: #1a3150;
  --ink: #172436;
  --muted: #657083;
  --line: #dfe3e8;
  --accent: #1f4c7c;
  --accent-hover: #173d66;
  --danger: #a53333;
  --success: #24734c;
  --warning: #866219;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

.login-screen {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background: linear-gradient(135deg, #10233c, #1b3f63);
}

.login-card {
  display: grid;
  width: min(100%, 420px);
  gap: 18px;
  padding: 36px;
  background: var(--surface);
  border-radius: 14px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.25);
}

.login-logo {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.login-card h1,
.login-card p {
  margin: 0;
}

.login-card h1 {
  font-size: 30px;
  line-height: 1.1;
}

.login-card > p {
  color: var(--muted);
}

.login-card label {
  display: grid;
  gap: 7px;
}

.login-card input {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.login-card .login-error {
  color: var(--danger);
}

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

:focus-visible {
  outline: 3px solid #77a6d3;
  outline-offset: 2px;
}

.admin-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 24px 16px;
  color: #fff;
  background: var(--sidebar);
}

.admin-brand {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 0 10px 28px;
  color: inherit;
  text-decoration: none;
}

.admin-brand strong {
  font-size: 17px;
}

.admin-brand span {
  color: #aebbd0;
  font-size: 12px;
}

.sidebar nav {
  display: grid;
  gap: 4px;
}

.nav-item {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  color: #cad3e0;
  background: transparent;
  border: 0;
  border-radius: 7px;
  text-align: left;
  cursor: pointer;
}

.nav-item:hover,
.nav-item.is-active {
  color: #fff;
  background: var(--sidebar-hover);
}

.account {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: auto;
  padding: 16px 10px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  overflow-wrap: anywhere;
}

.account span {
  color: #cad3e0;
  font-size: 12px;
}

.account strong {
  font-size: 13px;
}

.logout-button {
  width: fit-content;
  margin-top: 8px;
  padding: 0;
  color: #cad3e0;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

main {
  min-width: 0;
}

.topbar {
  position: sticky;
  z-index: 5;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 86px;
  padding: 16px clamp(20px, 4vw, 56px);
  background: rgba(246, 247, 248, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.topbar p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.topbar h1 {
  margin: 2px 0 0;
  font-size: 21px;
  font-weight: 650;
}

.top-actions {
  display: flex;
  gap: 10px;
}

.button {
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-weight: 600;
  cursor: pointer;
}

.button:disabled {
  cursor: wait;
  opacity: 0.58;
}

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

.button.primary:hover {
  background: var(--accent-hover);
}

.button.secondary {
  color: var(--ink);
  background: var(--surface);
  border-color: var(--line);
}

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

.notice {
  margin: 24px clamp(20px, 4vw, 56px) 0;
  padding: 12px 14px;
  border: 1px solid;
  border-radius: 7px;
}

.notice.success {
  color: var(--success);
  background: #eff9f4;
  border-color: #b8dec9;
}

.notice.error {
  color: #8a2525;
  background: #fff2f2;
  border-color: #e5bcbc;
}

.panel {
  width: min(1100px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 80px;
}

.panel[hidden] {
  display: none;
}

.panel-intro {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 26px;
}

.panel-intro h2 {
  margin: 0;
  font-size: 25px;
}

.panel-intro p {
  max-width: 690px;
  margin: 7px 0 0;
  color: var(--muted);
}

.draft-meta {
  display: flex;
  flex-direction: column;
  flex: 0 0 180px;
  padding: 13px 15px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.draft-meta span {
  color: var(--muted);
  font-size: 11px;
}

.draft-meta strong {
  margin: 2px 0;
}

.editor-grid {
  display: grid;
  gap: 12px;
}

.editor-grid details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.editor-grid summary {
  padding: 18px 20px;
  font-weight: 650;
  cursor: pointer;
}

.editor-grid details > :not(summary) {
  margin-right: 20px;
  margin-left: 20px;
}

.editor-grid details > :last-child {
  margin-bottom: 22px;
}

.form-grid {
  display: grid;
  gap: 18px;
  padding-top: 4px;
}

.form-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label > span,
.upload-box > label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

input,
textarea,
select {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #cfd5dc;
  border-radius: 7px;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  outline: 2px solid rgba(31, 76, 124, 0.14);
}

.array-editor {
  display: grid;
  gap: 10px;
  padding-top: 4px;
}

.array-row {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--field-count), minmax(120px, 1fr)) auto;
  gap: 10px;
  align-items: end;
  padding: 14px;
  background: #f8f9fa;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.array-row textarea {
  min-height: 70px;
}

.icon-button {
  width: 40px;
  height: 40px;
  color: var(--danger);
  background: #fff;
  border: 1px solid #e3c5c5;
  border-radius: 7px;
  cursor: pointer;
}

.text-button {
  margin-top: 12px;
  padding: 8px 0;
  color: var(--accent);
  background: transparent;
  border: 0;
  font-weight: 600;
  cursor: pointer;
}

.subheading {
  margin-top: 24px !important;
  margin-bottom: 8px;
  font-size: 15px;
}

.upload-box {
  display: grid;
  gap: 14px;
  max-width: 680px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.upload-result {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.upload-result > span {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 12px;
}

.upload-result code {
  align-self: center;
  overflow-wrap: anywhere;
}

.version-list,
.user-list {
  display: grid;
  gap: 10px;
}

.version-row,
.user-row {
  display: grid;
  grid-template-columns: 90px minmax(180px, 1fr) minmax(160px, 0.7fr) auto;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.version-row span,
.user-row span {
  color: var(--muted);
  font-size: 12px;
}

.version-row strong,
.user-row strong {
  font-size: 14px;
}

.add-user,
.transfer-box {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) 220px auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.transfer-box {
  grid-template-columns: 1fr 1fr;
  align-items: start;
  margin-top: 32px;
}

.transfer-box h3 {
  margin: 0;
}

.transfer-box p {
  max-width: 560px;
  margin: 6px 0 0;
  color: var(--muted);
}

.transfer-box form {
  display: grid;
  gap: 12px;
}

dialog {
  width: min(480px, calc(100vw - 32px));
  padding: 0;
  border: 0;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 29, 48, 0.18);
}

dialog::backdrop {
  background: rgba(10, 23, 40, 0.58);
}

dialog form {
  padding: 24px;
}

dialog h2 {
  margin: 0;
  font-size: 21px;
}

dialog p {
  margin: 7px 0 20px;
  color: var(--muted);
}

dialog form > div {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

@media (max-width: 860px) {
  .admin-shell {
    display: block;
  }

  .sidebar {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    height: auto;
    padding: 14px 12px 0;
  }

  .admin-brand {
    padding-bottom: 14px;
  }

  .sidebar nav {
    display: flex;
    overflow-x: auto;
  }

  .nav-item {
    width: auto;
    white-space: nowrap;
  }

  .account {
    display: none;
  }

  .topbar {
    position: relative;
    align-items: flex-start;
    padding: 16px 20px;
  }

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

  .panel {
    width: calc(100% - 24px);
    padding-top: 28px;
  }

  .panel-intro {
    flex-direction: column;
  }

  .draft-meta {
    flex-basis: auto;
  }

  .form-grid.two,
  .form-grid.three,
  .array-row,
  .add-user,
  .transfer-box {
    grid-template-columns: 1fr;
  }

  .icon-button {
    width: 100%;
  }

  .version-row,
  .user-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (max-width: 520px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }

  .top-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}