:root {
  color-scheme: dark;
  --bg: #071017;
  --panel: rgba(13, 24, 34, .88);
  --panel-2: rgba(18, 34, 48, .9);
  --border: rgba(125, 151, 171, .28);
  --text: #edf7fb;
  --muted: #9db2c2;
  --accent: #38d4bf;
  --accent-2: #64a8ff;
  --danger: #ff7180;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Inter, Arial, sans-serif;
  background:
    linear-gradient(130deg, rgba(10, 34, 46, .96), rgba(5, 11, 17, .96)),
    radial-gradient(circle at 72% 24%, rgba(56, 212, 191, .18), transparent 28rem),
    #071017;
  color: var(--text);
}

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

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  padding: 24px 18px;
  border-right: 1px solid var(--border);
  background: rgba(5, 13, 20, .92);
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(56, 212, 191, .55);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-weight: 800;
  background: #0d1c27;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: 28px; line-height: 1; }
h2 { margin-bottom: 8px; font-size: 32px; }
.login-copy h2 { font-size: clamp(34px, 4vw, 52px); }
h3 { margin-bottom: 14px; font-size: 18px; }
.brand p, .topbar p, .login-copy p, .message { color: var(--muted); }
.brand p { margin: 4px 0 0; font-size: 12px; }

nav { display: grid; gap: 8px; }
button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  background: rgba(23, 42, 58, .9);
  cursor: pointer;
}
button:hover { border-color: rgba(56, 212, 191, .65); }
.nav-btn { text-align: left; }
.nav-btn.active, .primary-btn {
  background: linear-gradient(135deg, #38d4bf, #2a9f93);
  color: #041215;
  border-color: transparent;
  font-weight: 700;
}
.ghost-btn { background: rgba(22, 39, 55, .82); }

.session-card {
  margin-top: auto;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(12, 24, 35, .86);
}
.session-card span { display: block; color: var(--muted); font-size: 12px; }
.session-card strong { display: block; margin: 6px 0 12px; }

.workspace { padding: 26px; min-width: 0; }
.hidden { display: none !important; }
.login-layout {
  min-height: calc(100vh - 52px);
  display: grid;
  grid-template-columns: minmax(300px, 1fr) 420px;
  align-items: center;
  gap: 36px;
}
.login-copy {
  max-width: 680px;
  padding: 28px;
}
.eyebrow {
  color: var(--accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 700;
}

.panel, .stat-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, .22);
}
.panel { padding: 18px; }
.login-panel { display: grid; gap: 14px; }

label { display: grid; gap: 7px; color: #c9d7e2; font-size: 13px; font-weight: 650; }
input, select, textarea {
  width: 100%;
  border: 1px solid rgba(125, 151, 171, .25);
  border-radius: 7px;
  padding: 11px 12px;
  color: var(--text);
  background: rgba(6, 16, 25, .94);
  outline: none;
}
textarea { min-height: 92px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); }

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 22px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(10, 21, 31, .72);
}
.topbar h2 { font-size: 30px; margin-bottom: 4px; }
.top-actions { display: flex; gap: 10px; }

.view { display: none; }
.view.active { display: block; }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.stat-card { padding: 18px; }
.stat-card span { display: block; color: var(--muted); font-size: 13px; }
.stat-card strong { display: block; margin-top: 10px; font-size: 32px; }

.quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.quick-action { min-height: 74px; text-align: left; }

.split {
  display: grid;
  grid-template-columns: minmax(420px, 1.1fr) minmax(360px, .9fr);
  gap: 16px;
}
.docs-split { grid-template-columns: 420px 1fr; }
.docs-workspace {
  display: grid;
  grid-template-columns: 360px minmax(520px, 1fr) 360px;
  gap: 16px;
  align-items: start;
}
.admin-grid {
  display: grid;
  grid-template-columns: minmax(360px, .95fr) minmax(320px, .75fr) minmax(360px, .9fr);
  gap: 16px;
  align-items: start;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 12px;
}
.search-row {
  display: flex;
  gap: 8px;
  min-width: min(460px, 100%);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.full { grid-column: 1 / -1; }

.list {
  display: grid;
  gap: 10px;
  max-height: calc(100vh - 250px);
  overflow: auto;
  padding-right: 4px;
}
.item {
  padding: 13px;
  border: 1px solid rgba(125, 151, 171, .22);
  border-radius: 9px;
  background: var(--panel-2);
}
.item.active { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.item-title { font-weight: 800; margin-bottom: 4px; }
.item-meta { color: var(--muted); font-size: 12px; }
.item-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.item-actions button { padding: 8px 10px; font-size: 13px; }
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid rgba(125, 151, 171, .25);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 750;
}
.muted-pill {
  color: var(--muted);
  background: rgba(125, 151, 171, .1);
}
.rights-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.rights-list span {
  padding: 9px 10px;
  border: 1px solid rgba(125, 151, 171, .18);
  border-radius: 8px;
  color: #dbeaf2;
  background: rgba(8, 18, 27, .62);
}
.danger-btn {
  border-color: rgba(255, 113, 128, .45);
  color: #ffd8dd;
  background: rgba(96, 24, 36, .72);
}
.danger-btn:hover {
  border-color: rgba(255, 113, 128, .9);
  background: rgba(132, 34, 49, .86);
}

.empty-state {
  color: var(--muted);
  border: 1px dashed rgba(125, 151, 171, .3);
  border-radius: 9px;
  padding: 16px;
  margin-bottom: 14px;
}
.upload-box { display: grid; gap: 12px; }
.pdf-toolbox {
  display: grid;
  gap: 12px;
}
.manual-upload {
  margin-top: 18px;
  border-top: 1px solid rgba(125, 151, 171, .18);
  padding-top: 14px;
}
.manual-upload summary {
  color: var(--muted);
  cursor: pointer;
  font-weight: 750;
}
.manual-upload[open] summary { margin-bottom: 12px; }
.share-link-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: end;
  margin: 0 0 12px;
  padding: 12px;
  border: 1px solid rgba(56, 212, 191, .3);
  border-radius: 9px;
  background: rgba(9, 28, 36, .82);
}
.share-link-panel span {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}
.share-link-panel input {
  min-width: 0;
}
.pdf-editor-panel {
  min-height: calc(100vh - 150px);
}
.editor-head {
  align-items: center;
}
.zoom-actions {
  display: flex;
  gap: 8px;
}
.zoom-actions button {
  width: 42px;
  height: 38px;
  padding: 0;
  font-weight: 900;
}
.pdf-frame {
  position: relative;
  min-height: calc(100vh - 260px);
  height: calc(100vh - 260px);
  overflow: hidden;
  border: 1px solid rgba(125, 151, 171, .22);
  border-radius: 10px;
  background: #2f3336;
}
.pdf-container {
  position: absolute;
  inset: 0;
  overflow: auto;
}
.pdf-container .pdfViewer {
  padding: 18px 0 34px;
}
.pdf-container .pdfViewer .page {
  margin: 0 auto 14px;
  border: 0;
  box-shadow: 0 18px 44px rgba(0, 0, 0, .42);
}
.pdf-empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 6px;
  text-align: center;
  color: var(--muted);
  background: linear-gradient(135deg, rgba(9, 20, 30, .86), rgba(13, 29, 40, .86));
}
.pdf-empty-state strong {
  color: var(--text);
  font-size: 20px;
}
.docs-list-panel {
  min-height: calc(100vh - 150px);
}
.document-list {
  max-height: calc(100vh - 230px);
}
.admin-users-list {
  max-height: calc(100vh - 250px);
}
.pdfViewer .annotationLayer input,
.pdfViewer .annotationLayer textarea,
.pdfViewer .annotationLayer select,
.pdfViewer .annotationLayer button {
  border-radius: 0 !important;
  box-shadow: none !important;
}
.pdfViewer .annotationLayer input,
.pdfViewer .annotationLayer textarea,
.pdfViewer .annotationLayer select {
  background: transparent !important;
  color: #071017 !important;
  border: 0 !important;
  padding: 0 !important;
}
.pdfViewer .annotationLayer input:focus,
.pdfViewer .annotationLayer textarea:focus,
.pdfViewer .annotationLayer select:focus {
  outline: 2px solid rgba(56, 212, 191, .75) !important;
  outline-offset: 1px;
}
.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  max-width: 460px;
  padding: 14px 16px;
  border: 1px solid rgba(56, 212, 191, .42);
  border-radius: 10px;
  color: var(--text);
  background: rgba(8, 19, 28, .96);
  box-shadow: 0 14px 50px rgba(0, 0, 0, .35);
}
.danger { color: var(--danger); }

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; border-right: 0; border-bottom: 1px solid var(--border); }
  nav { grid-template-columns: repeat(3, 1fr); }
  .login-layout, .split, .docs-split, .admin-grid { grid-template-columns: 1fr; }
  .docs-workspace { grid-template-columns: 1fr; }
  .pdf-frame { height: 70vh; min-height: 520px; }
  .stat-grid { grid-template-columns: 1fr; }
  .panel-head, .topbar { flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
  .share-link-panel { grid-template-columns: 1fr; }
}