:root {
  color-scheme: light;
  --bg: #f5f7f4;
  --surface: #ffffff;
  --text: #172018;
  --muted: #627067;
  --border: #d8e0d7;
  --accent: #22764c;
  --accent-dark: #18583a;
  --danger: #b42318;
  --danger-bg: #fff1f0;
  --warning-bg: #fff7df;
  --shadow: 0 12px 28px rgba(30, 45, 35, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.topbar {
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 28px;
}

.brand {
  color: var(--accent-dark);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.nav {
  align-items: center;
  display: flex;
  gap: 16px;
}

.user-badge {
  color: var(--muted);
  font-size: 14px;
}

.nav-link {
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.page {
  margin: 0 auto;
  max-width: 1180px;
  padding: 28px;
}

.auth-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin: 9vh auto 0;
  max-width: 420px;
  padding: 28px;
}

h1,
h2 {
  letter-spacing: 0;
  margin: 0;
}

.auth-panel h1,
.upload-panel h2,
.section-heading h1,
.viewer-header h1 {
  font-size: 24px;
}

.stack-form,
.upload-form {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

label {
  color: var(--text);
  display: grid;
  font-size: 14px;
  font-weight: 700;
  gap: 8px;
}

input[type="text"],
input[type="password"],
select,
input:not([type]) {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  min-height: 44px;
  padding: 0 12px;
  width: 100%;
}

input[type="file"] {
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--muted);
  min-height: 44px;
  padding: 10px;
  width: 100%;
}

input:focus {
  border-color: var(--accent);
  outline: 3px solid rgba(34, 118, 76, 0.15);
}

select:focus {
  border-color: var(--accent);
  outline: 3px solid rgba(34, 118, 76, 0.15);
}

button,
.primary-button,
.secondary-button,
.danger-button {
  align-items: center;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 750;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  text-decoration: none;
  white-space: nowrap;
}

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

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

.secondary-button {
  background: #eef3ed;
  color: var(--text);
}

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

.link-button {
  background: transparent;
  color: var(--accent-dark);
  min-height: 0;
  padding: 0;
}

button:disabled,
select:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.notice {
  border-radius: 6px;
  margin-bottom: 16px;
  padding: 12px 14px;
}

.notice-success {
  background: #eaf6ee;
  color: #14532d;
}

.notice-error {
  background: var(--danger-bg);
  color: var(--danger);
}

.notice-warning {
  background: var(--warning-bg);
  color: #7a4b00;
}

.toolbar,
.upload-panel,
.documents-section,
.viewer-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 22px;
}

.upload-panel,
.documents-section,
.viewer-header {
  margin-top: 18px;
}

.search-form {
  display: grid;
  gap: 10px;
  position: relative;
}

.search-row {
  align-items: center;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(180px, 1fr) 34px auto auto;
  position: relative;
}

.hint {
  align-items: center;
  background: #edf4ef;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--accent-dark);
  cursor: help;
  display: inline-flex;
  font-weight: 800;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.hint-popover {
  background: #101a13;
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
  color: #f8fbf8;
  display: none;
  gap: 8px;
  left: 0;
  max-width: min(560px, 92vw);
  padding: 14px;
  position: absolute;
  top: calc(100% + 8px);
  z-index: 5;
}

.hint-popover span {
  display: block;
  line-height: 1.45;
}

.hint-popover code {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  padding: 2px 5px;
}

.hint:hover + .hint-popover,
.hint:focus + .hint-popover,
.hint-popover:hover {
  display: grid;
}

.upload-form {
  align-items: center;
  grid-template-columns: minmax(180px, 1fr) auto;
}

.user-create-form {
  align-items: end;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(160px, 1fr) minmax(160px, 1fr) 160px auto;
  margin-top: 22px;
}

.section-heading,
.viewer-header {
  align-items: flex-start;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.section-heading span {
  background: #eef3ed;
  border-radius: 999px;
  color: var(--accent-dark);
  font-weight: 800;
  min-width: 38px;
  padding: 6px 10px;
  text-align: center;
}

.document-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.user-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.document-card {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 16px;
}

.user-row {
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 16px;
}

.document-card h2 {
  font-size: 18px;
  overflow-wrap: anywhere;
}

.user-row h2 {
  font-size: 18px;
  overflow-wrap: anywhere;
}

.meta {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 13px;
  gap: 8px 14px;
  margin-top: 8px;
}

.snippet {
  color: #39463d;
  line-height: 1.55;
  margin: 12px 0 0;
}

.match-lines {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.match-lines p {
  background: #f7faf5;
  border-left: 3px solid #f0c94f;
  border-radius: 6px;
  color: #2d3a31;
  line-height: 1.45;
  margin: 0;
  padding: 9px 11px;
}

.match-lines span {
  color: var(--muted);
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  margin-right: 8px;
  text-transform: uppercase;
}

.document-actions {
  align-items: center;
  display: flex;
  gap: 8px;
}

.user-actions {
  align-items: center;
  display: flex;
  gap: 8px;
}

.role-form {
  align-items: center;
  display: flex;
  gap: 8px;
}

.empty-state {
  color: var(--muted);
  margin: 24px 0 0;
}

.back-link {
  color: var(--accent-dark);
  display: inline-flex;
  font-weight: 800;
  margin-bottom: 8px;
  text-decoration: none;
}

.pdf-frame {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  height: calc(100vh - 210px);
  margin-top: 18px;
  min-height: 560px;
  width: 100%;
}

@media (max-width: 760px) {
  .topbar,
  .section-heading,
  .viewer-header,
  .nav {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar {
    gap: 10px;
    padding: 16px;
  }

  .page {
    padding: 16px;
  }

  .search-row,
  .upload-form,
  .user-create-form,
  .document-card,
  .user-row {
    grid-template-columns: 1fr;
  }

  .hint {
    position: absolute;
    right: 8px;
    top: 5px;
  }

  .search-row input {
    padding-right: 50px;
  }

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

  .user-actions,
  .role-form {
    align-items: stretch;
    flex-direction: column;
  }

  .document-actions > *,
  .document-actions button,
  .document-actions a,
  .user-actions > *,
  .user-actions button,
  .role-form select {
    width: 100%;
  }

  .pdf-frame {
    height: 72vh;
    min-height: 420px;
  }
}