:root {
  --color-bg: #0f1419;
  --color-surface: rgba(255, 255, 255, 0.04);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e8edf2;
  --color-text-muted: #9aa8b6;
  --color-accent: #3d9b6e;
  --color-danger: #e85d5d;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --radius: 0.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -20%, rgba(61, 155, 110, 0.12), transparent 50%);
}

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

.vault-wrap {
  width: min(100%, 56rem);
  margin: 0 auto;
  padding: var(--space-md) var(--space-sm);
}

.vault-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.vault-brand {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.vault-brand span {
  color: var(--color-text-muted);
  font-weight: 400;
}

.vault-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.vault-card h2 {
  margin: 0 0 var(--space-sm);
  font-size: 1rem;
  font-weight: 600;
}

.vault-muted {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--color-text-muted);
}

input[type="password"],
input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

input[type="file"] {
  width: 100%;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 1rem;
  font: inherit;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  color: #0f1419;
  background: linear-gradient(145deg, #4db87f, var(--color-accent));
}

.btn-ghost {
  color: var(--color-text);
  background: transparent;
  border-color: var(--color-border);
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-row {
  display: grid;
  gap: var(--space-sm);
}

@media (min-width: 640px) {
  .form-row.two {
    grid-template-columns: 1fr 1fr;
  }
}

.doc-list,
.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.doc-item,
.link-item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.doc-item:last-child,
.link-item:last-child {
  border-bottom: none;
}

.doc-meta strong {
  display: block;
  word-break: break-word;
}

.badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.45rem;
  border-radius: 0.25rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-muted);
}

.badge-active {
  background: var(--color-accent);
  color: #0f1419;
}

.badge-expired {
  background: rgba(232, 93, 93, 0.2);
  color: #f5a0a0;
}

.share-url {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.5rem;
  font-size: 0.8125rem;
  word-break: break-all;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 0.35rem;
  border: 1px solid var(--color-border);
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.alert-error {
  background: rgba(232, 93, 93, 0.15);
  border: 1px solid rgba(232, 93, 93, 0.35);
  color: #f5b4b4;
}

.alert-success {
  background: rgba(61, 155, 110, 0.15);
  border: 1px solid rgba(61, 155, 110, 0.35);
  color: #9ed9b8;
}

.hidden {
  display: none !important;
}

.pdf-frame {
  width: 100%;
  height: min(75dvh, 900px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #1a222c;
}

.pdf-pages {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-slot {
  min-height: 4rem;
  background: #1a222c;
}

.page-status {
  padding: 1.25rem 1rem;
  text-align: center;
  margin: 0;
}

.page-status-error {
  color: #f5a0a0;
}

.pdf-pages canvas,
.pdf-pages img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

body.view-page {
  margin: 0;
  min-height: 100dvh;
  background: #1a222c;
  background-image: none;
  font-family: var(--font-sans);
}

.view-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: var(--space-sm) var(--space-md);
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.vault-back-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--vault-muted, #9aa8b6);
  text-decoration: none;
}

.vault-back-link:hover {
  color: var(--vault-text, #e8edf2);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.doc-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.view-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 3.5rem);
}

.view-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 3.5rem);
  padding: var(--space-md);
  text-align: center;
  font-family: var(--font-sans);
  color: var(--color-text);
}

.view-error h1 {
  margin: 0 0 var(--space-sm);
  font-size: 1.25rem;
}

.view-error p {
  margin: 0;
  color: var(--color-text-muted);
  max-width: 28rem;
}

.viewer-full {
  width: 100%;
  min-height: 100dvh;
}

.view-center {
  text-align: center;
  padding: var(--space-lg) var(--space-sm);
}

@media (min-width: 640px) {
  .vault-wrap {
    padding: var(--space-lg);
  }
}

/* Admin dashboard */
.admin-wrap {
  width: min(100%, 72rem);
}

.admin-page .vault-header {
  margin-bottom: var(--space-md);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 600;
}

.admin-grid {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

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

.panel-head h2 {
  margin: 0 0 0.25rem;
}

.panel-head {
  margin-bottom: var(--space-sm);
}

.compact-list .compact-item {
  padding: 0.65rem 0;
}

.btn-sm {
  padding: 0.45rem 0.75rem;
  font-size: 0.8125rem;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th,
.data-table td {
  text-align: left;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.data-table th {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.table-url {
  margin-top: 0.35rem;
  font-size: 0.75rem;
}

.table-sub {
  display: block;
  font-size: 0.75rem;
  margin-top: 0.15rem;
}

.table-actions {
  white-space: nowrap;
  text-align: right;
}

.ua-cell {
  max-width: 14rem;
  word-break: break-word;
}

.new-link-box {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}