:root {
  --bg-primary: #121212;
  --bg-secondary: #1E1E1E;
  --bg-tertiary: #2C2C2C;
  --text-primary: #E0E0E0;
  --text-secondary: #BDBDBD;
  --accent-primary: #BB86FC; 
  --accent-secondary: #03DAC6;
  --primary-action: #007bff;
  
  --pos: #2ECC71;
  --neg: #E74C3C;
  --border-color: #3A3A3A;

  --status-popular: #2ECC71;
  --status-rejected: #E74C3C;
  --status-controversial: #F39C12;
  --status-neglected: #00a0ac; 
  --status-average: #BDC3C7;  
  --highlight-color: #FFD700; /* Gold for highlighting */


  font-family: 'Roboto', 'Arial', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

body, html {
  margin: 0;
  padding: 0;
  height: 100vh; 
  overflow: hidden; 
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: flex; 
  flex-direction: column; 
}

header, nav, footer {
  flex-shrink: 0; 
}

header {
  background-color: var(--bg-secondary);
  padding: 10px 1rem; 
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  margin: 0;
  font-size: 1.8rem; 
  font-weight: 700;
  color: var(--text-primary);
}

nav {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
}

nav li {
  padding: 10px 18px; 
  cursor: pointer;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  font-size: 0.9rem;
}

nav li.active {
  color: var(--text-primary);
  border-bottom: 3px solid var(--primary-action);
  font-weight: bold;
}

nav li:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

nav li a {
  text-decoration: none;
  color: inherit;
}

main {
  flex-grow: 1; 
  overflow: hidden; 
  display: flex; 
  position: relative; 
}

section.tab {
  display: none; 
  flex-direction: column; 
  width: 100%;
  height: 100%; 
  box-sizing: border-box;
}
section.tab.active {
  display: flex; 
}

section#data, section#metrics {
    padding: 1.5rem;
    overflow-y: auto; 
}


h2 {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-top: 0;
  font-size: 1.5rem;
}

.controls {
  margin-bottom: 1rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

button, .button-like-label {
  padding: 8px 15px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

button:hover, .button-like-label:hover {
  background-color: #383838;
  border-color: var(--text-secondary);
}

button.primary {
  background-color: var(--primary-action);
  color: #fff;
  border-color: var(--primary-action);
}
button.primary:hover {
  background-color: #0056b3;
  border-color: #0056b3;
}
button.danger {
    background-color: var(--neg);
    color: white;
    border-color: var(--neg);
}
button.danger:hover {
    background-color: #c33025;
    border-color: #c33025;
}


table {
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  margin-top: 1rem;
  background-color: var(--bg-secondary);
}

th, td {
  border: 1px solid var(--border-color);
  padding: 8px 10px;
  text-align: center;
  font-size: 0.9rem;
}

th {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: bold;
}

td {
  color: var(--text-secondary);
}

td[contenteditable="true"] {
  background-color: #2a2a2a;
  color: var(--text-primary);
  outline: none;
}
td[contenteditable="true"]:focus {
  outline: 2px solid var(--primary-action);
  outline-offset: -2px;
}

#data-table tbody tr:nth-child(odd) td[contenteditable="true"] {
    background-color: #272727;
}
#data-table tbody tr:nth-child(even) td[contenteditable="true"] {
    background-color: #2a2a2a;
}


.hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  font-style: italic;
}

/* --- Graph Tab Specific Layout --- */
section#graph {
    padding: 0; 
}

.graph-top-controls {
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap; 
    gap: 15px 20px; 
    background-color: var(--bg-secondary);
}

.graph-main-area {
    display: flex;
    flex-grow: 1; 
    overflow: hidden; 
    background-color: var(--bg-primary); 
}

.graph-legend-container {
    flex-basis: 260px; 
    flex-shrink: 0;
    overflow-y: auto; 
    padding: 15px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex; 
    flex-direction: column;
}
.graph-legend-container h4 {
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-size: 1.1em;
}
#legend-content .legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.9em;
}
#legend-content .legend-color-box {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}
#legend-content .legend-gradient {
    width: 100%;
    height: 20px;
    margin-bottom: 5px;
    border: 1px solid var(--border-color);
}
#legend-content .legend-gradient-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8em;
}

.legend-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 15px 0;
}

#mode-explanation {
    margin-top: 10px;
}
#mode-explanation h4 {
    margin-bottom: 8px;
}
#explanation-content p {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.4;
}
#explanation-content strong {
    color: var(--text-primary);
}

#clique-analysis-area {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}
#clique-analysis-area h4 {
    margin-bottom: 10px;
    font-size: 1em;
}
#clique-analysis-area .control-group {
    margin-bottom: 8px;
}
#clique-analysis-area label {
    min-width: 70px; 
}
#clique-selector {
    flex-grow: 1; 
    max-width: 70%; /* Allow it to use more space if available */
    padding: 4px 6px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
}
#clique-selector:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
#clique-count-info {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-top: 5px;
}


#d3-sociogram-container {
    flex-grow: 1; 
    overflow: hidden; 
    background-color: var(--bg-primary); 
    cursor: grab; 
}
#d3-sociogram-container:active {
    cursor: grabbing;
}


#sociogram-svg {
  width: 100%;
  height: 100%;
  display: block; 
}

.graph-bottom-controls { 
    padding: 8px 15px; 
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    overflow-y: auto; 
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 15px; 
    background-color: var(--bg-secondary);
    font-size: 0.9rem;
}


/* D3 Styles */
.node circle {
  stroke: var(--bg-primary); 
  stroke-width: 2px; 
  transition: r 0.3s ease, fill 0.3s ease, stroke 0.3s ease, stroke-opacity 0.3s ease, opacity 0.3s ease; 
}
.node:hover circle {
    stroke: var(--accent-secondary); 
    stroke-width: 3px;
}
.node.highlighted circle {
    stroke: var(--highlight-color);
    stroke-width: 3.5px;
    opacity: 1 !important;
}
.node.faded {
    opacity: 0.2;
}
.node.faded circle {
    stroke-opacity: 0.3;
}


.node text {
  fill: var(--text-primary);
  paint-order: stroke;
  stroke: var(--bg-secondary); 
  stroke-width: 3px;
  stroke-linecap: butt;
  stroke-linejoin: miter;
  pointer-events: none; 
  transition: opacity 0.3s ease;
}
.node.faded text {
    opacity: 0.3;
}
.node.highlighted text {
    opacity: 1 !important;
}


.link {
  stroke-opacity: 0.7;
  transition: stroke-opacity 0.3s ease, opacity 0.3s ease;
}
.link:hover {
    stroke-opacity: 1;
}
.link.highlighted {
    stroke-opacity: 1 !important;
    stroke-width: 3px !important; 
    opacity: 1 !important;
}
.link.faded {
    opacity: 0.1;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}
.control-group label {
    color: var(--text-secondary);
    font-size: 0.9em;
}
.control-group select,
.control-group input[type="number"] {
    padding: 6px 10px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}
.control-group input[type="range"] {
    width: 120px;
    cursor: pointer;
}
.control-group input[type="checkbox"] {
    cursor: pointer;
}
.control-group span {
    font-size: 0.9em;
    min-width: 25px; 
    text-align: right;
    color: var(--text-primary);
}
.controls-divider {
    width: 100%;
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 5px 0;
}

/* --- FIX: Updated Fullscreen Styles --- */

/* This targets the entire graph tab when it's fullscreen */
section#graph:fullscreen {
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-primary);
}

/* Hide the main page header, nav, and footer when the graph is fullscreen */
body:has(section#graph:fullscreen) header,
body:has(section#graph:fullscreen) nav,
body:has(section#graph:fullscreen) footer {
  display: none !important;
}



/* The flexbox layout of section#graph will keep the other controls visible */


footer {
  background-color: var(--bg-secondary);
  padding: 8px 1rem; 
  text-align: center;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-secondary);
  flex-shrink: 0; 
}
footer p {
  margin: 0.2rem 0;
}
footer a {
  color: var(--accent-secondary);
  text-decoration: none;
}
footer a:hover {
  text-decoration: underline;
}