/* Light mode defaults */
:root {
  --nf-bg-top: #e8eef5;
  --nf-bg-bottom: #d0dce8;
  --nf-panel-bg: rgba(240, 245, 250, 0.85);
  --nf-panel-border: rgba(60, 100, 140, 0.28);
  --nf-text: #1a2a3a;
  --nf-muted: #4a6a7a;
  --nf-cyan: #1a8aaa;
  --nf-mint: #1a9a5a;
  --nf-warn: #c0303a;
  --nf-user: #1a6aaa;
  --nf-familiar: #1a8a6a;
  --nf-system: #3a6aaa;
  --nf-stat-bg: rgba(220, 232, 245, 0.7);
  --nf-stat-border: rgba(60, 100, 140, 0.22);
  --nf-input-bg: rgba(255, 255, 255, 0.88);
  --nf-input-border: rgba(60, 100, 140, 0.3);
  --nf-btn-bg: rgba(240, 245, 250, 0.86);
  --nf-log-bg: rgba(235, 242, 250, 0.8);
  --nf-canvas-border: rgba(60, 100, 140, 0.15);
  --nf-canvas-bg: rgba(225, 235, 248, 0.6);
  --nf-bubble-bg: rgba(240, 250, 245, 0.92);
  --nf-bubble-border: rgba(26, 154, 90, 0.42);
  --nf-bubble-text: #1a3a2a;
}

/* Dark mode overrides */
body.dark-mode {
  --nf-bg-top: #05080f;
  --nf-bg-bottom: #0a1a28;
  --nf-panel-bg: rgba(8, 20, 30, 0.72);
  --nf-panel-border: rgba(120, 232, 255, 0.28);
  --nf-text: #d7f7ff;
  --nf-muted: #94c5d3;
  --nf-cyan: #67efff;
  --nf-mint: #6ef6a2;
  --nf-warn: #ff8f9f;
  --nf-user: #b0f4ff;
  --nf-familiar: #89ffe0;
  --nf-system: #a9d7ff;
  --nf-stat-bg: rgba(7, 17, 25, 0.6);
  --nf-stat-border: rgba(103, 239, 255, 0.22);
  --nf-input-bg: rgba(6, 15, 22, 0.88);
  --nf-input-border: rgba(103, 239, 255, 0.3);
  --nf-btn-bg: rgba(6, 17, 24, 0.86);
  --nf-log-bg: rgba(4, 12, 18, 0.8);
  --nf-canvas-border: rgba(103, 239, 255, 0.15);
  --nf-canvas-bg: rgba(4, 12, 18, 0.6);
  --nf-bubble-bg: rgba(3, 12, 18, 0.85);
  --nf-bubble-border: rgba(110, 246, 162, 0.42);
  --nf-bubble-text: #c9ffe7;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

body.neural-familiar-page {
  font-family: 'Source Sans 3', 'Inter', sans-serif;
  color: var(--nf-text);
  background: radial-gradient(circle at 20% 10%, var(--nf-bg-bottom), var(--nf-bg-top) 62%);
  overflow: hidden;
}

#familiarWorld {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
}

.hud-panel {
  position: fixed;
  z-index: 30;
  top: calc(var(--site-header-height, 70px) + 12px);
  right: 12px;
  width: min(420px, calc(100vw - 24px));
  max-height: calc(100vh - var(--site-header-height, 70px) - 24px);
  overflow-y: auto;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--nf-panel-border);
  background: var(--nf-panel-bg);
  backdrop-filter: blur(10px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.34);
}

.panel-header-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.panel-title {
  margin: 0;
  font-family: 'Orbitron', 'Share Tech Mono', monospace;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  color: var(--nf-cyan);
  flex-shrink: 0;
}

.familiar-name-input {
  flex: 1;
  border: 1px solid var(--nf-input-border);
  border-radius: 6px;
  background: var(--nf-input-bg);
  color: var(--nf-cyan);
  padding: 0.25rem 0.4rem;
  font-family: 'Orbitron', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  min-width: 0;
}

.familiar-name-input:focus {
  outline: 1px solid var(--nf-cyan);
  border-color: var(--nf-cyan);
}

.panel-subtitle {
  margin: 0.2rem 0 0.85rem;
  color: var(--nf-muted);
  font-size: 0.88rem;
  font-family: 'Share Tech Mono', monospace;
  letter-spacing: 0.03em;
}

.panel-utility-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.settings-guide-trigger {
  border: 1px solid var(--nf-input-border);
  border-radius: 999px;
  background: var(--nf-btn-bg);
  color: var(--nf-cyan);
  padding: 0.24rem 0.68rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
}

.settings-guide-trigger:hover {
  border-color: var(--nf-cyan);
  transform: translateY(-1px);
}

.panel-utility-note {
  font-size: 0.72rem;
  color: var(--nf-muted);
  font-family: 'Share Tech Mono', monospace;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
}

.stat-card {
  border: 1px solid var(--nf-stat-border);
  border-radius: 10px;
  padding: 0.5rem 0.55rem;
  background: var(--nf-stat-bg);
}

.stat-card-radar {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-card-radar canvas {
  margin-top: 0.2rem;
}

.stat-label {
  display: block;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--nf-muted);
  margin-bottom: 0.15rem;
}

.stat-value {
  display: block;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.9rem;
  color: var(--nf-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Energy bar */
.energy-bar-container {
  margin-top: 0.25rem;
  height: 5px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.energy-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease, background 0.3s ease;
}

.energy-bar-fill.high {
  background: linear-gradient(90deg, #6ef6a2, #4de888);
}

.energy-bar-fill.mid {
  background: linear-gradient(90deg, #ffe066, #f0c040);
}

.energy-bar-fill.low {
  background: linear-gradient(90deg, #ff8f9f, #e06070);
}

/* XP bar */
.xp-bar-container {
  margin-top: 0.25rem;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.xp-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--nf-cyan), #a0d0ff);
  transition: width 0.3s ease;
  width: 0%;
}

/* Training visualization */
.training-viz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 0.35rem 0;
  margin-bottom: 0.3rem;
  user-select: none;
}

.training-viz-header .toggle-arrow {
  color: var(--nf-muted);
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.training-viz-section {
  margin-bottom: 0.85rem;
  overflow: hidden;
  transition: max-height 0.3s ease;
  max-height: 200px;
}

.training-viz-section.collapsed {
  max-height: 0;
  margin-bottom: 0;
}

.training-viz-section canvas {
  width: 100%;
  height: auto;
  border: 1px solid var(--nf-canvas-border);
  border-radius: 8px;
  background: var(--nf-canvas-bg);
}

/* Reward tuning */
#rewardTuningSection {
  max-height: 480px;
}

#rewardTuningSection.collapsed {
  max-height: 0;
  margin-bottom: 0;
}

.reward-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 0.6rem;
}

.reward-preset-btn {
  border: 1px solid var(--nf-stat-border);
  background: var(--nf-btn-bg);
  color: var(--nf-muted);
  border-radius: 6px;
  cursor: pointer;
  padding: 0.22rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  transition: border-color 0.15s, color 0.15s;
}

.reward-preset-btn.active {
  border-color: var(--nf-mint);
  color: var(--nf-mint);
  background: rgba(110, 246, 162, 0.08);
}

.reward-preset-btn:hover {
  border-color: var(--nf-cyan);
}

.reward-slider-grid {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}

.reward-slider-row {
  display: grid;
  grid-template-columns: 90px 1fr 32px;
  align-items: center;
  gap: 0.4rem;
}

.reward-slider-label {
  font-size: 0.72rem;
  color: var(--nf-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.reward-slider-val {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72rem;
  color: var(--nf-text);
  text-align: right;
}

.reward-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(103, 239, 255, 0.15);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.reward-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--nf-cyan);
  border: 2px solid var(--nf-panel-bg);
  cursor: pointer;
  transition: background 0.15s;
}

.reward-slider::-webkit-slider-thumb:hover {
  background: var(--nf-mint);
}

.reward-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--nf-cyan);
  border: 2px solid var(--nf-panel-bg);
  cursor: pointer;
}

.reward-reset-btn {
  width: 100%;
  border: 1px solid rgba(110, 246, 162, 0.32);
  background: var(--nf-btn-bg);
  color: var(--nf-mint);
  border-radius: 8px;
  cursor: pointer;
  padding: 0.4rem;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.reward-reset-btn:hover {
  border-color: var(--nf-mint);
  transform: translateY(-1px);
}

.control-group {
  margin-bottom: 0.7rem;
}

.control-group label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--nf-muted);
  margin-bottom: 0.3rem;
}

.control-group input,
.control-group select {
  width: 100%;
  border: 1px solid var(--nf-input-border);
  border-radius: 8px;
  background: var(--nf-input-bg);
  color: var(--nf-text);
  padding: 0.5rem 0.6rem;
  font-size: 0.9rem;
}

.control-group input:focus,
.control-group select:focus {
  outline: 1px solid var(--nf-cyan);
  border-color: var(--nf-cyan);
}

.api-note {
  margin: 0.2rem 0 0;
  color: var(--nf-muted);
  font-size: 0.75rem;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.45rem;
  margin: 0.7rem 0 0.9rem;
}

.button-row button {
  border: 1px solid var(--nf-input-border);
  background: var(--nf-btn-bg);
  color: var(--nf-text);
  border-radius: 8px;
  cursor: pointer;
  padding: 0.5rem 0.45rem;
  font-size: 0.79rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.button-row button:hover {
  transform: translateY(-1px);
  border-color: var(--nf-cyan);
}

.button-row .warn {
  border-color: rgba(255, 143, 159, 0.42);
  color: var(--nf-warn);
}

.button-row .accent {
  border-color: rgba(110, 246, 162, 0.42);
  color: var(--nf-mint);
}

.chat-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
}

.chat-form input {
  flex: 1;
  border: 1px solid var(--nf-input-border);
  border-radius: 8px;
  background: var(--nf-input-bg);
  color: var(--nf-text);
  padding: 0.55rem 0.6rem;
  font-size: 0.9rem;
}

.chat-form button {
  border: 1px solid var(--nf-input-border);
  background: var(--nf-btn-bg);
  color: var(--nf-text);
  border-radius: 8px;
  cursor: pointer;
  padding: 0.5rem 0.8rem;
  font-weight: 700;
}

.chat-form button:disabled {
  opacity: 0.75;
  cursor: not-allowed;
}

.toggle-row {
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--nf-muted);
  font-size: 0.84rem;
}

/* Activity log filters */
.log-filters {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 0.4rem;
}

.log-filter-btn {
  border: 1px solid var(--nf-stat-border);
  background: var(--nf-btn-bg);
  color: var(--nf-muted);
  border-radius: 6px;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.log-filter-btn.active {
  border-color: var(--nf-cyan);
  color: var(--nf-cyan);
  background: rgba(103, 239, 255, 0.08);
}

.log-filter-btn:hover {
  border-color: var(--nf-cyan);
}

.activity-log {
  border: 1px solid var(--nf-stat-border);
  border-radius: 10px;
  min-height: 140px;
  max-height: 220px;
  overflow-y: auto;
  background: var(--nf-log-bg);
  padding: 0.5rem;
}

.activity-item {
  padding: 0.36rem 0.32rem;
  font-size: 0.78rem;
  line-height: 1.28;
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
  font-family: 'Share Tech Mono', monospace;
}

.activity-item:last-child {
  border-bottom: 0;
}

.activity-system {
  color: var(--nf-system);
}

.activity-familiar {
  color: var(--nf-familiar);
}

.activity-user {
  color: var(--nf-user);
}

.activity-warn {
  color: var(--nf-warn);
}

.speech-bubble {
  position: fixed;
  z-index: 22;
  max-width: 250px;
  border-radius: 10px;
  border: 1px solid var(--nf-bubble-border);
  background: var(--nf-bubble-bg);
  color: var(--nf-bubble-text);
  padding: 0.5rem 0.62rem;
  font-size: 0.85rem;
  line-height: 1.2;
  pointer-events: none;
  opacity: 0;
  transform: translate(-9999px, -9999px);
  transition: opacity 160ms ease;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.34);
}

.speech-bubble.visible {
  opacity: 1;
}

/* Score display */
.score-display {
  font-family: 'Share Tech Mono', monospace;
  font-size: 1.1rem;
  color: var(--nf-cyan);
  font-weight: 700;
}

.score-mult {
  font-size: 0.7rem;
  color: var(--nf-muted);
}

/* Death screen overlay */
.death-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
}

.death-overlay.active {
  display: flex;
}

.settings-guide-modal[hidden] {
  display: none;
}

.settings-guide-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 9, 14, 0.68);
  backdrop-filter: blur(5px);
  padding: 20px;
}

.settings-guide-card {
  width: min(720px, calc(100vw - 32px));
  max-height: calc(100vh - 54px);
  overflow-y: auto;
  border-radius: 14px;
  border: 1px solid var(--nf-panel-border);
  background: var(--nf-panel-bg);
  box-shadow: 0 20px 52px rgba(0, 0, 0, 0.48);
  padding: 1rem 1rem 1.1rem;
}

.settings-guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.settings-guide-header h2 {
  margin: 0;
  font-family: 'Orbitron', monospace;
  font-size: 1.02rem;
  color: var(--nf-cyan);
}

.settings-guide-close {
  border: 1px solid var(--nf-input-border);
  border-radius: 8px;
  background: var(--nf-btn-bg);
  color: var(--nf-text);
  font-size: 1rem;
  line-height: 1;
  width: 30px;
  height: 30px;
  cursor: pointer;
}

.settings-guide-close:hover {
  border-color: var(--nf-cyan);
}

.settings-guide-intro {
  margin: 0.55rem 0 0.8rem;
  color: var(--nf-muted);
  font-size: 0.83rem;
}

.settings-guide-section {
  border: 1px solid var(--nf-stat-border);
  border-radius: 10px;
  background: var(--nf-stat-bg);
  padding: 0.7rem 0.75rem;
  margin-bottom: 0.55rem;
}

.settings-guide-section h3 {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--nf-mint);
}

.settings-guide-section p {
  margin: 0;
  font-size: 0.81rem;
  line-height: 1.35;
  color: var(--nf-text);
}

.settings-guide-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.36rem;
}

.settings-guide-list li {
  font-size: 0.8rem;
  line-height: 1.32;
  color: var(--nf-text);
}

.death-card {
  width: min(480px, calc(100vw - 40px));
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  border-radius: 16px;
  border: 1px solid var(--nf-panel-border);
  background: var(--nf-panel-bg);
  backdrop-filter: blur(14px);
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.death-card h2 {
  font-family: 'Orbitron', monospace;
  font-size: 1.4rem;
  color: var(--nf-warn);
  margin: 0 0 0.3rem;
}

.death-card .death-subtitle {
  color: var(--nf-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.death-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1rem;
  text-align: left;
}

.death-stat {
  border: 1px solid var(--nf-stat-border);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
  background: var(--nf-stat-bg);
}

.death-stat .stat-label {
  font-size: 0.68rem;
}

.death-stat .stat-value {
  font-size: 0.85rem;
  color: var(--nf-cyan);
}

.death-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.death-actions button {
  border: 1px solid var(--nf-input-border);
  background: var(--nf-btn-bg);
  color: var(--nf-text);
  border-radius: 8px;
  cursor: pointer;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.death-actions button:hover {
  border-color: var(--nf-cyan);
  transform: translateY(-1px);
}

.death-actions .primary-btn {
  border-color: var(--nf-mint);
  color: var(--nf-mint);
}

.high-scores-section {
  text-align: left;
  margin-top: 0.8rem;
}

.high-scores-section h3 {
  font-family: 'Orbitron', monospace;
  font-size: 0.85rem;
  color: var(--nf-cyan);
  margin: 0 0 0.4rem;
}

.high-scores-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.high-scores-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.25rem 0.3rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.75rem;
  color: var(--nf-muted);
  border-bottom: 1px solid rgba(128, 128, 128, 0.1);
}

.high-scores-list li:first-child {
  color: var(--nf-cyan);
}

/* Challenge banner */
.challenge-banner {
  position: fixed;
  top: calc(var(--site-header-height, 70px) + 8px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  display: none;
  border-radius: 10px;
  border: 1px solid var(--nf-panel-border);
  background: var(--nf-panel-bg);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.85rem;
  color: var(--nf-cyan);
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}

.challenge-banner.active {
  display: block;
}

.challenge-banner .close-btn {
  background: none;
  border: none;
  color: var(--nf-muted);
  cursor: pointer;
  margin-left: 0.5rem;
  font-size: 0.8rem;
}

/* Achievement grid */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 0.3rem;
  padding: 0.3rem;
}

.achievement-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: 1px solid var(--nf-stat-border);
  background: var(--nf-stat-bg);
  font-size: 0.7rem;
  color: var(--nf-muted);
  cursor: default;
  transition: all 0.2s;
}

.achievement-icon.unlocked {
  border-color: var(--nf-cyan);
  color: var(--nf-cyan);
  background: rgba(103, 239, 255, 0.1);
  text-shadow: 0 0 6px var(--nf-cyan);
}

.achievement-icon:hover {
  transform: scale(1.15);
}

#achievementSection {
  max-height: 120px;
}

#achievementSection.collapsed {
  max-height: 0;
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .hud-panel {
    left: 10px;
    right: 10px;
    width: auto;
    top: auto;
    bottom: 10px;
    max-height: min(54vh, 520px);
  }

  .panel-title {
    font-size: 1.12rem;
  }

  .button-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .training-viz-section canvas {
    height: 120px;
  }

  .panel-utility-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  .settings-guide-card {
    width: calc(100vw - 20px);
    max-height: calc(100vh - 24px);
    padding: 0.9rem;
  }
}