/* Eco-Evo Graph Simulation – styles */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Light theme */
  --bg: #ffffff;
  --surface: #ffffff;
  --border: #dddddd;
  --text: #222222;
  --accent: #0b63ce;
  --accent-dim: #2f7fe0;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

/* ─── Toolbar ─── */

#toolbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: 48px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toolbar-stats {
  margin-left: auto;
}

.toolbar-stats span {
  margin-right: 12px;
  font-size: 12px;
}

#toolbar button {
  padding: 5px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: background 0.15s, box-shadow 0.15s;
}

#toolbar button:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.04);
}

#toolbar button:disabled {
  background: #cccccc;
  color: #777777;
  border-color: #dddddd;
  cursor: default;
  box-shadow: none;
}

#toolbar button:disabled:hover {
  background: #cccccc;
  box-shadow: none;
}

.toolbar-help {
  padding: 4px 9px;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

#toolbar label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

#toolbar input[type="range"] {
  width: 100px;
}

/* ─── Main layout ─── */

#layout {
  display: flex;
  height: calc(100% - 48px);
}

.help-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 60px 16px 16px;
  z-index: 1000;
  overflow-y: auto;
}

.help-content {
  background: #ffffff;
  color: #222222;
  max-width: 700px;
  width: 90%;
  padding: 16px 20px 18px;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  font-size: 13px;
  max-height: calc(100% - 80px);
  overflow-y: auto;
}

.help-content h2 {
  font-size: 16px;
  margin-bottom: 8px;
}

.help-content h3 {
  font-size: 14px;
  margin-top: 10px;
  margin-bottom: 6px;
}

.help-content p {
  margin-bottom: 8px;
  line-height: 1.4;
}

.help-content ul {
  margin-left: 18px;
  margin-bottom: 6px;
}

.help-content li {
  margin-bottom: 3px;
}

.help-close {
  float: right;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  padding: 0;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eeeeee;
  color: #555555;
  border: 1px solid #cccccc;
  cursor: pointer;
}

.help-close:hover {
  background: #e0e0e0;
}

/* Left panel */
#panel-left {
  width: 220px;
  min-width: 200px;
  padding: 12px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

#panel-left h3 {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--accent);
}

#panel-left fieldset {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px;
  margin-bottom: 12px;
  background: #fafafa;
}

#panel-left fieldset legend {
  font-size: 11px;
  color: #777777;
  padding: 0 4px;
}

#panel-left label {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 8px;
  font-size: 12px;
}

.inline-pair {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  justify-content: flex-start;
}

.inline-pair span {
  white-space: nowrap;
  text-align: left;
}

.inline-pair input[type="number"] {
  width: 50px;
}

#panel-left input[type="number"],
#panel-left select {
  width: 100%;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: #ffffff;
  color: var(--text);
  font-size: 12px;
}

#panel-left input[type="range"] {
  width: 100%;
}

.disabled-slider {
  opacity: 0.4;
}

.disabled-slider input[type="range"] {
  pointer-events: none;
}

#panel-left button {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  margin-right: 4px;
  margin-top: 4px;
  transition: background 0.15s, box-shadow 0.15s;
}

#panel-left button:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.04);
}

#panel-left button:disabled {
  background: #cccccc;
  color: #777777;
  border-color: #dddddd;
  cursor: default;
  box-shadow: none;
}

#panel-left button:disabled:hover {
  background: #cccccc;
  box-shadow: none;
}

/* Legend box */
.legend-box {
  margin-top: 12px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fafafa;
}

.legend-box h4 {
  font-size: 11px;
  color: #777777;
  margin-bottom: 6px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  font-size: 11px;
}

.dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-input { background: #4a90d9; }
.dot-internal { background: #7c7c7c; }
.dot-output { background: #d94a4a; }
.dot-bridged {
  background: #7c7c7c;
  border: 2px solid #ffd600;
}

.line {
  display: inline-block;
  width: 20px;
  height: 3px;
  border-radius: 1px;
}

.line-pos { background: #000000; }
.line-neg { background: #b71c1c; }

/* Center panel */
#panel-center {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#cy {
  width: 100%;
  height: 100%;
  background: var(--bg);
}

/* Right panel */
#panel-right {
  width: 260px;
  min-width: 220px;
  padding: 12px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

#panel-right h3 {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--accent);
}

.output-box {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  margin-bottom: 12px;
  background: #fafafa;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.output-label {
  font-size: 12px;
  color: #555555;
}

.output-value {
  font-size: 16px;
  font-weight: 600;
  color: #222222;
}

.output-chart-container {
  position: relative;
  height: 120px;
  margin-bottom: 8px;
}

.output-window {
  display: block;
  width: 100%;
  margin-bottom: 12px;
  padding: 4px 6px;
  font-size: 11px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: #ffffff;
}

.chart-container {
  flex: 1;
  position: relative;
  min-height: 200px;
}

/* ─── Scrollbar ─── */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #f3f3f3;
}

::-webkit-scrollbar-thumb {
  background: #cccccc;
  border-radius: 3px;
}