/* ============================================================
   Game Library (Steam-style) + Game Launch Overlay
   ============================================================ */

/* ── Library Hero Banner ── */
.lib-hero {
  position: relative;
  height: 220px;
  border-radius: var(--panel-radius);
  overflow: hidden;
  cursor: pointer;
  margin-bottom: 20px;
  border: 1px solid var(--gold-border-light);
  transition: all var(--transition-base);
}
.lib-hero:hover {
  border-color: var(--gold-border);
  box-shadow: var(--shadow-lg);
}
.lib-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7,11,20,0.92) 40%, rgba(7,11,20,0.2) 100%);
  display: flex;
  align-items: center;
  padding: 40px;
}
.lib-hero-content {
  display: flex;
  align-items: center;
  gap: 24px;
}
.lib-hero-icon {
  font-size: 64px;
  width: 100px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border-radius: 12px;
  flex-shrink: 0;
}
.lib-hero-title {
  font-size: 32px;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: 2px;
  margin-bottom: 4px;
}
.lib-hero-sub {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  margin-bottom: 8px;
}
.lib-hero-stats {
  display: flex;
  gap: 20px;
  font-size: var(--font-xs);
  color: var(--text-secondary);
}

/* ── Library Toolbar ── */
.lib-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding: 8px 0;
  gap: 12px;
  flex-wrap: wrap;
}
.lib-toolbar-left {
  display: flex;
  gap: 4px;
}
.lib-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lib-nav-btn {
  padding: 8px 16px;
  font-size: var(--font-sm);
  font-weight: 600;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--button-radius);
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.lib-nav-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-hover);
}
.lib-nav-btn.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border-color: var(--gold-border-light);
}
.lib-nav-btn span {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-left: 4px;
}
.lib-view-toggle {
  display: flex;
  gap: 2px;
  background: var(--bg-tertiary);
  border-radius: var(--button-radius);
  padding: 2px;
}
.lib-view-toggle button {
  padding: 4px 10px;
  font-size: 14px;
  background: transparent;
  border: none;
  border-radius: 3px;
  color: var(--text-tertiary);
  cursor: pointer;
}
.lib-view-toggle button.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* ── Library Grid (Steam-style cards) ── */
.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.lib-card {
  background: var(--bg-secondary);
  border: 1px solid var(--gold-border-light);
  border-radius: var(--card-radius);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
}
.lib-card:hover {
  border-color: var(--gold-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.lib-card-cover {
  height: 120px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.lib-card-icon {
  font-size: 48px;
  transition: transform var(--transition-base);
}
.lib-card:hover .lib-card-icon {
  transform: scale(1.1);
}
.lib-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7,11,20,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.lib-card:hover .lib-card-overlay {
  opacity: 1;
}
.lib-play-btn {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--positive), #2d8a5e);
  color: #fff;
  border: none;
  border-radius: var(--button-radius);
  font-weight: 900;
  font-size: var(--font-sm);
  cursor: pointer;
  letter-spacing: 1px;
}
.lib-play-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(67,181,129,0.4);
}
.lib-card-actions {
  display: flex;
  gap: 6px;
}
.lib-card-actions button {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.lib-card-actions button:hover {
  background: rgba(255,255,255,0.2);
  color: var(--text-primary);
}
.lib-card-info {
  padding: 12px;
}
.lib-card-name {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lib-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--text-tertiary);
}

/* ── Library List View ── */
.lib-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lib-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid transparent;
  border-radius: var(--card-radius);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.lib-list-item:hover {
  border-color: var(--gold-border-light);
  background: var(--bg-tertiary);
}
.lib-list-cover {
  width: 80px;
  height: 50px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.lib-list-info {
  flex: 1;
  min-width: 0;
}
.lib-list-name {
  font-weight: 700;
  color: var(--text-primary);
  font-size: var(--font-sm);
}
.lib-list-meta {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
}
.lib-list-stats {
  display: flex;
  gap: 16px;
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  flex-shrink: 0;
}

/* ── Launch Overlay (Steam-style) ── */
.launch-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1,10,21,0.97);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .4s ease;
}
.launch-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.launch-container {
  text-align: center;
  max-width: 500px;
  width: 90vw;
}
.launch-game-icon {
  width: 120px;
  height: 72px;
  border-radius: 12px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  border: 2px solid var(--gold-border);
  box-shadow: var(--shadow-gold);
}
.launch-game-title {
  font-size: var(--font-2xl);
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.launch-status {
  font-size: var(--font-base);
  color: var(--text-tertiary);
  margin-bottom: 32px;
  min-height: 24px;
}
.launch-progress-track {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 40px;
}
.launch-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  border-radius: 2px;
  transition: width .3s ease;
  width: 0%;
  box-shadow: 0 0 12px var(--gold-glow);
}
.launch-close-btn {
  padding: 12px 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--gold-border);
  border-radius: var(--button-radius);
  color: var(--text-secondary);
  font-size: var(--font-base);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 1px;
}
.launch-close-btn:hover {
  border-color: var(--gold);
  color: var(--text-primary);
  background: var(--bg-hover);
}
.launch-tips {
  margin-top: 40px;
  font-size: var(--font-xs);
  color: var(--text-muted);
  line-height: 1.8;
}

/* ── Auth Modals ── */
.modal-switch {
  text-align: center;
  margin-top: 16px;
  color: var(--text-tertiary);
  font-size: var(--font-sm);
}
.modal-switch a {
  color: var(--gold);
  cursor: pointer;
  font-weight: 700;
}
.modal-switch a:hover { text-decoration: underline; }

.logout-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--gold-border-light);
  color: var(--text-tertiary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logout-btn:hover {
  border-color: var(--negative);
  color: var(--negative);
  background: var(--negative-bg);
}

/* ── P2P Market Cards ── */
.market-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.market-card {
  background: var(--bg-secondary);
  border: 1px solid var(--gold-border-light);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: all var(--transition-base);
}
.market-card:hover {
  border-color: var(--gold-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.market-card-header {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.market-card-icon {
  font-size: 40px;
}
.market-discount-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--positive);
  color: #fff;
  font-size: 11px;
  font-weight: 900;
  padding: 3px 8px;
  border-radius: 4px;
}
.market-card-body {
  padding: 16px;
}
.market-card-game {
  font-size: var(--font-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.market-card-meta {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  margin-bottom: 8px;
}
.market-card-price {
  font-size: var(--font-xl);
  font-weight: 900;
  color: var(--gold);
  font-family: var(--font-mono);
}
.market-card-compare {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-bottom: 8px;
}
.market-card-seller {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-xs);
  color: var(--text-secondary);
  padding: 8px 0;
  border-top: 1px solid rgba(205,190,145,0.05);
}
.market-card-qty {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
}
.market-card-actions {
  padding: 0 16px 16px;
}

/* ── Sidebar Auth ── */
#sidebar-auth { padding: 8px; }
#sidebar-user { display: flex; align-items: center; gap: 10px; padding: 8px 4px; }

/* ── Market K-line Panel ── */
.kline-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--gold-border-light);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: 8px;
}
.kline-tf-btn {
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 700;
  background: var(--bg-secondary);
  border: 1px solid var(--gold-border-light);
  border-radius: var(--button-radius);
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.kline-tf-btn.active, .kline-tf-btn:hover { background: var(--gold); color: var(--text-inverse); border-color: var(--gold); }

/* K-line smooth expand */
@keyframes klineIn {
  from { opacity: 0; max-height: 0; transform: translateY(-8px); }
  to { opacity: 1; max-height: 500px; transform: translateY(0); }
}
.kline-expand-panel { animation: klineIn 0.2s ease-out; }

/* Market Tabs */
.market-tab {
  padding: 8px 18px;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-tertiary);
  text-decoration: none;
  border-radius: 20px;
  transition: all var(--transition-fast);
}
.market-tab:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.market-tab.active { color: var(--text-inverse); background: var(--gold); }

/* Friends Steam Layout */
.friends-steam-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  height: calc(100vh - 160px);
  min-height: 500px;
  border: 1px solid var(--gold-border-light);
  border-radius: var(--card-radius);
  overflow: hidden;
  background: var(--bg-secondary);
}
.friends-list-panel {
  background: var(--bg-deep);
  border-right: 1px solid var(--gold-border-light);
  overflow-y: auto;
}
.friends-list-panel h5 {
  padding: 14px 16px 8px;
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  position: sticky;
  top: 0;
  background: var(--bg-deep);
  z-index: 1;
}
.friend-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}
.friend-list-item:hover, .friend-list-item.selected {
  background: var(--bg-hover);
  border-left-color: var(--gold);
}
.friend-list-item .fl-avatar {
  position: relative;
  font-size: 22px;
  flex-shrink: 0;
}
.friend-list-item .fl-avatar .fl-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--bg-deep);
}
.fl-dot.online { background: var(--positive); }
.fl-dot.offline { background: #555; }
.fl-dot.ingame { background: var(--info); }
.friend-list-item .fl-name {
  font-size: var(--font-sm);
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.friend-list-item .fl-game {
  font-size: 10px;
  color: var(--text-tertiary);
}

/* Friends detail panel */
.friends-detail-panel {
  padding: 20px 24px;
  overflow-y: auto;
}
.friend-profile-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gold-border-light);
  margin-bottom: 16px;
}
.friend-profile-header .fp-avatar {
  font-size: 48px;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 50%;
  flex-shrink: 0;
}
.fp-info h3 { margin-bottom: 2px; }
.fp-info .fp-status { font-size: var(--font-xs); }
.fp-actions { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }

/* Chat panel */
.chat-panel {
  background: var(--bg-deep);
  border: 1px solid var(--gold-border-light);
  border-radius: var(--card-radius);
  margin-top: 16px;
  overflow: hidden;
}
.chat-messages {
  height: 200px;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.chat-msg {
  max-width: 75%;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: var(--font-sm);
  line-height: 1.4;
}
.chat-msg.mine {
  align-self: flex-end;
  background: var(--gold);
  color: var(--text-inverse);
  border-bottom-right-radius: 4px;
}
.chat-msg.theirs {
  align-self: flex-start;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-bottom-left-radius: 4px;
}
.chat-input-row {
  display: flex;
  gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid var(--gold-border-light);
}
.chat-input-row input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--gold-border-light);
  border-radius: 20px;
  padding: 8px 14px;
  font-size: var(--font-sm);
}