:root {
  --bg: #071018;
  --panel: #101b27;
  --panel-strong: #142233;
  --text: #eef7ff;
  --muted: #9fb1c5;
  --line: #26384c;
  --cyan: #34d5ff;
  --purple: #8157ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px 1fr;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
}

.sidebar {
  padding: 22px;
  background: #09131f;
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

nav {
  display: grid;
  gap: 9px;
  margin-top: 28px;
}

nav a,
button,
.toolbar input {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
}

nav a {
  padding: 11px 12px;
  text-decoration: none;
}

nav a.active {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background:
    radial-gradient(circle at 78% 0%, rgba(52, 213, 255, 0.14), transparent 35%),
    linear-gradient(135deg, #071018, #111629);
}

.page-header,
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--cyan);
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 32px;
}

button {
  padding: 10px 13px;
  cursor: pointer;
}

.action-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border: 0;
  color: white;
  font-weight: 800;
}

.toolbar input {
  flex: 1;
  min-width: 0;
  padding: 12px;
}

.search-form {
  display: flex;
  flex: 1;
  gap: 10px;
  min-width: 0;
}

.clear-link,
.category-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.filter-summary {
  color: var(--muted);
  font-weight: 700;
  white-space: nowrap;
}

.category-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -8px 0 20px;
}

.category-strip a.active {
  border-color: var(--cyan);
  color: var(--cyan);
}

.upload-band {
  margin-bottom: 20px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 27, 39, 0.88);
}

.status-banner {
  margin-bottom: 20px;
  padding: 14px;
  border: 1px solid rgba(52, 213, 255, 0.55);
  border-radius: 8px;
  background: rgba(52, 213, 255, 0.08);
}

.status-banner h2 {
  margin-bottom: 6px;
  font-size: 16px;
}

.status-banner p {
  margin-bottom: 0;
  color: var(--muted);
}

.error-banner {
  border-color: #ff5d72;
  background: rgba(255, 93, 114, 0.12);
}

.upload-band form,
.stack-form {
  display: grid;
  gap: 12px;
}

.upload-progress {
  display: grid;
  gap: 7px;
}

.upload-progress-track {
  height: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #071018;
}

.upload-progress-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  transition: width 160ms ease;
}

.upload-progress p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.stack-form input,
.stack-form select {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #071018;
  color: var(--text);
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.library-grid,
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}

.pdf-card,
.admin-grid article {
  min-height: 300px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 27, 39, 0.88);
  overflow: hidden;
}

.cover {
  height: 190px;
  display: grid;
  place-items: center;
  margin-bottom: 12px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: white;
  font-weight: 900;
}

.cover-img {
  width: 100%;
  height: 190px;
  object-fit: contain;
  margin-bottom: 12px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #071018;
}

.pdf-card h2 {
  margin-bottom: 7px;
  font-size: 16px;
  line-height: 1.25;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.pdf-card p,
.admin-grid p {
  color: var(--muted);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.pdf-card span {
  color: var(--cyan);
  font-size: 13px;
  display: block;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.card-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel-strong);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.edit-panel {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.edit-panel summary {
  cursor: pointer;
  color: var(--cyan);
  font-weight: 800;
}

.delete-form {
  margin-top: 10px;
}

.cover-form {
  margin-top: 10px;
}

.cover-form button {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(52, 213, 255, 0.08);
}

.delete-form button {
  border-color: #ff5d72;
  color: #ffd7dd;
  background: rgba(255, 93, 114, 0.12);
}

.user-card {
  display: grid;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.selector-form {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.selected-user-card {
  padding-bottom: 0;
  border-bottom: 0;
}

.user-card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
}

.user-card-header strong {
  color: var(--text);
}

.compact-form {
  gap: 8px;
}

.danger-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.danger-actions button {
  border-color: #ff5d72;
  color: #ffd7dd;
  background: rgba(255, 93, 114, 0.12);
}

.empty,
.rowline {
  color: var(--muted);
}

.rowline {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.log-list {
  display: grid;
  gap: 10px;
}

.log-entry {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 27, 39, 0.88);
}

.log-entry p {
  margin: 5px 0 0;
  color: var(--muted);
}

.log-meta {
  display: grid;
  gap: 4px;
  min-width: 190px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

.site-footer {
  margin-top: auto;
  padding-top: 28px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.login-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

a {
  color: var(--cyan);
}

.logout {
  display: grid;
  gap: 10px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 13px;
}

.login-body {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(420px, 100%);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(16, 27, 39, 0.92);
}

.login-panel img {
  width: 110px;
  height: 110px;
  object-fit: contain;
}

.login-panel form {
  display: grid;
  gap: 14px;
}

.login-panel label {
  display: grid;
  gap: 7px;
  color: var(--muted);
}

.login-panel input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #071018;
  color: var(--text);
}

.error {
  padding: 10px 12px;
  border: 1px solid #ff5d72;
  border-radius: 7px;
  color: #ffd7dd;
  background: rgba(255, 93, 114, 0.12);
}

@media (max-width: 800px) {
  body {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .page-header,
  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }
}