/* ==========================================================================
   Structure Browser – Page-specific styles & DT overrides
   ========================================================================== */

/* --- Tooltip structure preview ------------------------------------------------ */
pre {
  display: block;
  font: 100% "Courier New", Courier, monospace;
  padding: 10px;
  border: 1px solid #bae2f0;
  background: #e3f4f9;
  margin: .5em 0;
  overflow: auto;
  width: 800px;
}

#struct {
  display: none;
  position: absolute;
  z-index: 100;
  background: #fff;
  border: 1px solid #ccc;
  padding: 3px;
}

/* --- Init loader -------------------------------------------------------------- */
#Init_loader {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
}

/* --- Checkbox in header ------------------------------------------------------- */
#select-all {
  transform: scale(1.2);
  display: inline-block;
  margin: 0 auto;
  vertical-align: middle;
  overflow: visible;
}

/* --- Utility borders (used by JS to mark group boundaries) ------------------- */
.border-left {
  border-left: 1px solid #ccc !important;
}

/* --- DataTables header layout tweaks ----------------------------------------- */
th .dt-column-order {
  margin-right: -12px; /* shift sort arrow to right */
}

/* default: center titles (except first col = checkbox) */
th:not(:first-child) .dt-column-title {
  display: inline-block; /* keep arrow beside */
  text-align: center;
  padding-left: 24px;     /* space for sort arrow */
  margin: 0;
  line-height: 1.2em;
  white-space: normal;
}

/* GPCRdb logo col: no left padding */
th.gpcrdb-col .dt-column-title {
  padding-left: 0 !important;
}

/* ensure checkbox column width */
th:first-child {
  min-width: 45px;
  text-align: center;
}

/* --- ColVis "collection" as a modal grid ------------------------------------- */
div.dt-button-collection.columns-8 {
  position: fixed !important;
  inset: 0 !important;
  margin: auto !important;
  width: 90vw !important;
  max-width: 1400px;
  height: auto !important;
  max-height: 65vh !important;
  z-index: 9999;
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0,0,0,.25);
  background: #fff;
  display: flex;
  flex-direction: column;
}

/* inner menu is the scroll area */
div.dt-button-collection.columns-8 > div[role="menu"].cv-columns {
  flex: 1 1 auto;
  max-height: calc(65vh - 56px);
  height: auto !important;
  overflow-y: auto !important;
  overflow-x: auto !important;
  padding: 8px 12px;
  display: grid !important;
  grid-template-columns: repeat(8, 1fr);
  gap: 10px;
  align-items: start;
}

/* Dimmed backdrop */
div.dt-button-background {
  background: rgba(0,0,0,.35) !important;
  opacity: 1 !important;
}

/* column wrapper in colvis */
div.dt-button-collection.columns-8 .cv-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

/* buttons wrapping nicely */
div.dt-button-collection.columns-8 .cv-col > button.dt-button {
  max-width: 100%;
  white-space: normal !important;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.25;
  padding-right: 1.8em; /* space for ✓ */
}

/* ensure span inside can wrap */
div.dt-button-collection.columns-8 .cv-col > button.dt-button span {
  white-space: normal !important;
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* Don't break section headings in the ColVis grid */
div.dt-button-collection.columns-8 .cv-col .dt-colvis-heading span {
  white-space: nowrap !important;
  word-break: normal !important;
  overflow-wrap: normal !important;
}

/* title across full grid width */
div.dt-button-collection.columns-8 .dt-button-collection-title {
  grid-column: 1 / -1;
  margin-bottom: 6px;
}

/* group headings look like buttons, centered */
div.dt-button-collection.columns-8 .cv-col .dt-colvis-heading {
  cursor: pointer;
  white-space: normal;
  line-height: 1.2;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.6em;
  margin: 0 0 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid #eee;
  font-weight: 600;
}

/* footer area inside colvis */
div.dt-button-collection.columns-8 .cv-footer {
  border-top: 1px solid #eee;
  padding: 8px 12px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* --- Sticky superheader & first columns -------------------------------------- */

/* Superheader: make RECEPTOR cell sticky so divider runs through it */
table thead tr:nth-child(2) th:nth-child(1) {
  position: sticky;
  left: 0;
  z-index: 6;
  background: #fff;
}

/* Col 1: checkbox */
table thead tr:nth-child(3) th:nth-child(1),
table thead tr:nth-child(4) th:nth-child(1),
#StructureBrowserTable tbody td:nth-child(1) {
  position: sticky; left: 0;
  width: 45px; min-width: 45px; max-width: 45px;
  z-index: 5; background: #fff;
}

/* Col 2: GPCRdb */
table thead tr:nth-child(3) th:nth-child(2),
table thead tr:nth-child(4) th:nth-child(2),
#StructureBrowserTable tbody td:nth-child(2) {
  position: sticky; left: 45px;
  width: 70px; min-width: 70px; max-width: 70px;
  z-index: 5; background: #fff;
}

/* Col 3: Gene */
table thead tr:nth-child(3) th:nth-child(3),
table thead tr:nth-child(4) th:nth-child(3),
#StructureBrowserTable tbody td:nth-child(3) {
  position: sticky; left: 115px;
  width: 100px; min-width: 100px; max-width: 100px;
  z-index: 5; background: #fff;
}

/* Col 4: UniProt */
table thead tr:nth-child(3) th:nth-child(4),
table thead tr:nth-child(4) th:nth-child(4),
#StructureBrowserTable tbody td:nth-child(4) {
  position: sticky; left: 215px;
  width: 100px; min-width: 100px; max-width: 100px;
  z-index: 5; background: #fff;
}

/* Col 5: Protein */
table thead tr:nth-child(3) th:nth-child(5),
table thead tr:nth-child(4) th:nth-child(5),
#StructureBrowserTable tbody td:nth-child(5) {
  position: sticky; left: 315px;
  width: 100px; min-width: 100px; max-width: 100px;
  z-index: 5; background: #fff;
}

/* Vertical divider at boundary RECEPTOR → CLASSIFICATION (and through titles/filters/body) */
table thead tr:nth-child(2) th:nth-child(1)::after,
table thead tr:nth-child(3) th:nth-child(5)::after,
table thead tr:nth-child(4) th:nth-child(5)::after,
#StructureBrowserTable tbody td:nth-child(5)::after {
  content: "";
  position: absolute; top: 0; right: 0; width: 1px; height: 100%;
  background-color: #ccc; pointer-events: none;
}

/* --- Compact list cells: collapse to first line, expand on hover ------------- */
td.expand_1line {
  max-width: 100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
}

td.expand_1line .expanded { 
  display: none; 
  white-space: normal; 
}

td.expand_1line:hover { 
  overflow: visible; 
  white-space: normal; 
}

td.expand_1line:hover .collapsed { 
  display: none; 
}

td.expand_1line:hover .expanded { 
  display: inline;
}

/* --- Selection styling -------------------------------------------------------- */
:root{
  --sel-bg: var(--bs-primary-bg-subtle, #e7f1ff);
  --sel-border: var(--bs-primary-border-subtle, #9ec5fe);
}

#StructureBrowserTable tbody tr { 
  cursor: pointer;
}

#StructureBrowserTable tbody tr.row-selected td {
  background-color: var(--sel-bg) !important;
}

/* --- Icon/button helpers ------------------------------------------------------ */
.icon-button {
  background: none;
  border: none;
  padding: 0;
  margin-left: 4px;
  cursor: pointer;
  position: relative;
  z-index: 4;
  display: inline-flex;
  align-items: center;
}

th.sticky-uniprot .icon-button { 
  z-index: 6;
}

.icon-button i { 
  font-size: 14px;
  color: #444;
  pointer-events: auto; 
}
.icon-button:hover i { color: #007bff; }

/* --- Popovers ----------------------------------------------------------------- */
.popover.popover-wide {
  max-width: 600px;
  white-space: normal;
  word-wrap: break-word;
  z-index: 99999;
}

.popover.popover-wide .popover-content {
  font-size: 14px;
  line-height: 1.5;
  padding: 10px 14px;
}

/* --- Busy spinner on DT buttons ---------------------------------------------- */
.dt-button { 
  position: relative;
}

.dt-button > .btn-spinner {
  display: none;
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  width: 16px; height: 16px;
  border: 2px solid rgba(0,0,0,.25);
  border-top-color: rgba(0,0,0,.7);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  animation: btnSpin .8s linear infinite;
}

@keyframes btnSpin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.dt-button.is-busy > .btn-spinner { display: inline-block; }
.dt-button.is-busy > span { opacity: .45; }

/* --- GPCRdb logo monochrome hover -------------------------------------------- */
.gpcrdb-link { filter: grayscale(100%); }
.gpcrdb-link:hover { filter: grayscale(0%); }

/* --- Button spacing cluster tweaks ------------------------------------------- */
.dt-buttons .dt-button { margin-right: 5px !important; }
.dt-buttons .dt-button.cluster-sep { margin-left: 35px !important; }
.dt-buttons .dt-button > span { padding: 5px 5px !important; }

/* Active/blue state for the Superposition button */
.dt-button.active-superpose {
  background-color: #007bff !important;
  color: #fff !important;
  border: 1px solid #007bff !important;
}