/* ============================================================
   Позиционные игры — Стили
   Эстетика: брутализм + терминал. Резкие границы, моноширинные
   шрифты в технических местах, акцент янтарный на тёмном фоне.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

/* --- ПЕРЕМЕННЫЕ ТЕМ --- */
:root[data-theme="dark"] {
  --bg-base: #0a0a0b;
  --bg-panel: #131316;
  --bg-elevated: #1c1c20;
  --bg-hover: #25252a;
  --border-strong: #2e2e35;
  --border-subtle: #1f1f24;
  --text-primary: #e8e8ea;
  --text-secondary: #9c9ca5;
  --text-muted: #6a6a72;
  --accent: #f5a524;          /* янтарный */
  --accent-hover: #ffba3d;
  --accent-muted: #7a521a;
  --player-1: #4a9eff;
  --player-2: #ff6b9d;
  --player-3: #4ade80;
  --terminal-color: #6a6a72;
  --eq-path: #f5a524;
  --error: #ef4444;
  --success: #4ade80;
}

:root[data-theme="light"] {
  --bg-base: #fafaf7;
  --bg-panel: #ffffff;
  --bg-elevated: #f3f3ee;
  --bg-hover: #e8e8e2;
  --border-strong: #c8c8be;
  --border-subtle: #dededa;
  --text-primary: #1a1a1d;
  --text-secondary: #555560;
  --text-muted: #8a8a92;
  --accent: #c47600;
  --accent-hover: #a86500;
  --accent-muted: #f0d9a8;
  --player-1: #1e6fd9;
  --player-2: #d63384;
  --player-3: #1f9d55;
  --terminal-color: #8a8a92;
  --eq-path: #c47600;
  --error: #c92e2e;
  --success: #1f9d55;
}

/* --- БАЗА --- */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 14px;
  background: var(--bg-base);
  color: var(--text-primary);
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
}

button, input, select { font-family: inherit; }

/* --- ШАПКА --- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-strong);
  flex-shrink: 0;
}

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

.brand-mark {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  padding: 4px 8px;
  border: 1px solid var(--accent);
  letter-spacing: 0.05em;
}

.app-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

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

.status-indicator {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border-strong);
}

.status-indicator.active {
  color: var(--accent);
  border-color: var(--accent);
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 6px 10px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- ГЛАВНЫЙ ЛЕЙАУТ --- */
.app-main {
  display: grid;
  grid-template-columns: 340px 1fr 340px;
  gap: 1px;
  background: var(--border-strong);
  flex: 1;
  min-height: 0;
}

.panel {
  background: var(--bg-panel);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.panel-tree {
  background: var(--bg-base);
  overflow: hidden;
}

/* --- СЕКЦИИ ПАНЕЛЕЙ --- */
.panel-section {
  padding: 20px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.panel-section:last-child {
  border-bottom: none;
}

.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  margin: 0 0 14px 0;
}

/* --- ЭЛЕМЕНТЫ УПРАВЛЕНИЯ --- */
.control-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  margin-top: 12px;
}

.control-label:first-child { margin-top: 0; }

.control-select, .control-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 8px 10px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.control-select:focus, .control-input:focus {
  border-color: var(--accent);
}

.control-input[type="number"] {
  font-family: 'JetBrains Mono', monospace;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
}

.range-row input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.range-row .range-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  min-width: 36px;
  text-align: right;
}

/* --- КНОПКИ --- */
.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn {
  padding: 9px 14px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.12s ease;
  font-family: 'JetBrains Mono', monospace;
}

.btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0a0b;
  font-weight: 700;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #0a0a0b;
}

.btn-ghost {
  background: transparent;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 11px;
}

/* --- ЛЕГЕНДА --- */
.legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-p1 { background: var(--player-1); }
.dot-p2 { background: var(--player-2); }
.dot-p3 { background: var(--player-3); }
.dot-terminal {
  background: transparent;
  border: 1px solid var(--terminal-color);
}

.legend-line {
  width: 16px;
  height: 2px;
  background: var(--eq-path);
  flex-shrink: 0;
}

/* --- ДЕРЕВО --- */
.tree-header {
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-panel);
}

.tree-controls {
  display: flex;
  gap: 4px;
}

.tree-container {
  flex: 1;
  position: relative;
  overflow: auto;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: -1px -1px;
}

#treeSvg {
  display: block;
  user-select: none;
}

/* Узлы дерева */
.node-circle {
  cursor: pointer;
  transition: r 0.15s ease, stroke-width 0.15s ease;
}

.node-circle:hover {
  stroke-width: 3;
}

.node-circle.player-1 { fill: var(--player-1); stroke: var(--player-1); }
.node-circle.player-2 { fill: var(--player-2); stroke: var(--player-2); }
.node-circle.player-3 { fill: var(--player-3); stroke: var(--player-3); }
.node-circle.terminal {
  fill: var(--bg-panel);
  stroke: var(--terminal-color);
  stroke-width: 1.5;
}

.node-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  fill: var(--text-primary);
  text-anchor: middle;
  pointer-events: none;
  font-weight: 600;
}

.node-payoff {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  fill: var(--text-secondary);
  text-anchor: middle;
  pointer-events: none;
}

.edge {
  stroke: var(--border-strong);
  stroke-width: 1.2;
  fill: none;
  transition: stroke 0.2s, stroke-width 0.2s;
}

.edge.equilibrium {
  stroke: var(--eq-path);
  stroke-width: 2.5;
}

.edge-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  fill: var(--text-secondary);
  pointer-events: none;
}

.edge-label.equilibrium {
  fill: var(--eq-path);
  font-weight: 700;
}

/* Подсветка узла при пошаговой индукции */
.node-circle.highlight {
  filter: drop-shadow(0 0 6px var(--accent));
}

.tree-tooltip {
  position: absolute;
  background: var(--bg-elevated);
  border: 1px solid var(--accent);
  padding: 8px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 10;
  max-width: 280px;
}

.tree-tooltip.visible { opacity: 1; }

/* --- ПРАВАЯ ПАНЕЛЬ: результаты --- */
.problem-statement {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
}

.problem-statement p { margin: 0 0 10px 0; }

.equilibrium-output, .comparison {
  font-size: 13px;
  line-height: 1.5;
}

.equilibrium-output .placeholder,
.comparison .placeholder {
  color: var(--text-muted);
  font-style: italic;
  font-size: 12px;
}

.equilibrium-strategy {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 10px 12px;
  margin: 8px 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

.strategy-player {
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 4px;
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.1em;
}

.payoff-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  margin-top: 8px;
}

.payoff-table th, .payoff-table td {
  padding: 6px 8px;
  border: 1px solid var(--border-strong);
  text-align: right;
}

.payoff-table th:first-child, .payoff-table td:first-child {
  text-align: left;
}

.payoff-table th {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.payoff-table td.better {
  color: var(--success);
  font-weight: 700;
}

.payoff-table td.worse {
  color: var(--error);
}

/* --- Байесовский блок --- */
.bayes-block {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 10px 12px;
  margin-bottom: 10px;
}

.bayes-block:last-child {
  margin-bottom: 0;
}

.bayes-plot {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  margin-top: 8px;
}

/* --- ПОДВАЛ --- */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 24px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-strong);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* (стиль footer-version удалён вместе с надписью версии) */

/* --- АДАПТИВ --- */
@media (max-width: 1100px) {
  .app-main { grid-template-columns: 280px 1fr 300px; }
}

@media (max-width: 900px) {
  .app-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    overflow-y: auto;
  }
  .panel { max-height: none; }
  .panel-tree { min-height: 500px; }
}

/* Скроллбары */
.panel::-webkit-scrollbar, .tree-container::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.panel::-webkit-scrollbar-track, .tree-container::-webkit-scrollbar-track {
  background: var(--bg-base);
}

.panel::-webkit-scrollbar-thumb, .tree-container::-webkit-scrollbar-thumb {
  background: var(--border-strong);
}

.panel::-webkit-scrollbar-thumb:hover, .tree-container::-webkit-scrollbar-thumb:hover {
  background: var(--accent-muted);
}