/* Virtual Library: small refinements on top of the Bootswatch FLATLY theme. */

:root {
  --vl-bg: #f4f6f9;
  --vl-muted: #6c757d;
  --vl-accent: #18bc9c;
}

body {
  background-color: var(--vl-bg);
}

.card {
  border-radius: 0.75rem;
}

/* Navbar brand: "Biblioteca Virtual" followed by the client name. */
.brand-client {
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  font-weight: 400;
  margin-left: 0.75rem;
  padding-left: 0.75rem;
}

/* Tabs: underline style instead of boxed tabs. */
.nav-tabs-modern {
  border-bottom: 1px solid #dee2e6;
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
}

.nav-tabs-modern .nav-link {
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--vl-muted);
  font-weight: 600;
  white-space: nowrap;
  padding: 0.75rem 1.25rem;
}

.nav-tabs-modern .nav-link.active,
.nav-tabs-modern .nav-link:hover {
  background: transparent;
  border-bottom-color: var(--vl-accent);
  color: #2c3e50;
}

/* Date and time inputs only need room for "DD/MM/AAAA" / "HH:MM". */
.date-input {
  max-width: 200px;
}

.time-input {
  max-width: 130px;
}

/* Inline errors are always red (Bootstrap's danger color), never green. */
.invalid-feedback {
  color: var(--bs-form-invalid-color, #e74c3c);
}

/* Results table: highlight the hovered row to hint that rows are clickable. */
#search-results-table .dash-spreadsheet tr:hover td {
  background-color: #f1f9f7 !important;
}

/* Book details modal. */
.detail-label {
  color: var(--vl-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}

.detail-value {
  font-size: 1.05rem;
}

.detail-summary {
  white-space: pre-line;
  line-height: 1.6;
}

/* Dashboard summary cards. */
.stat-label {
  color: var(--vl-muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stat-icon {
  color: var(--vl-accent);
  font-size: 1.4rem;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0.35rem 0 0.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Friendly empty states. */
.empty-state {
  padding: 3rem 1rem;
}

.empty-state-icon {
  color: #ced4da;
  font-size: 3rem;
}