/* Session Viewer - Layout */
.sv-container {
  display: flex;
  height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
}

.sv-sidebar {
  width: 320px;
  min-width: 320px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sv-sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sv-sidebar-header .back-link {
  margin-bottom: 0;
}

.sv-session-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.sv-session-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}

.sv-session-item:hover {
  background: var(--bg-tertiary);
}

.sv-session-item.active {
  background: var(--bg-tertiary);
  border-left-color: var(--accent);
}

.sv-session-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
  color: var(--text-secondary);
}

.sv-session-info {
  flex: 1;
  min-width: 0;
}

.sv-session-key {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.sv-session-time {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Main area */
.sv-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* Stats bar */
.sv-stats {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.sv-stat {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sv-stat-value {
  color: var(--text);
  font-weight: 600;
}

/* Filter bar */
.sv-filters {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.sv-filter-check {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.sv-filter-check input {
  accent-color: var(--accent);
}

.sv-search {
  flex: 1;
  min-width: 200px;
  padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.sv-search:focus {
  border-color: var(--accent);
}

/* Timeline */
.sv-timeline {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  scroll-behavior: smooth;
}

.sv-timeline-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-secondary);
  gap: 12px;
}

.sv-timeline-empty-icon {
  font-size: 48px;
  opacity: 0.3;
}

/* Event cards */
.sv-event {
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.15s;
}

.sv-event:hover {
  border-color: var(--text-secondary);
}

.sv-event-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 12px;
}

.sv-event-type {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
}

.sv-event-time {
  margin-left: auto;
  color: var(--text-secondary);
  font-size: 11px;
  font-family: 'SFMono-Regular', Consolas, monospace;
}

.sv-event-body {
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.6;
}

/* User message */
.sv-event.user {
  border-left: 3px solid var(--accent);
  max-width: 85%;
}
.sv-event.user .sv-event-header { background: rgba(88, 166, 255, 0.08); }
.sv-event.user .sv-event-type { background: rgba(88, 166, 255, 0.15); color: var(--accent); }

/* Assistant message */
.sv-event.assistant {
  border-left: 3px solid var(--green);
  max-width: 85%;
  margin-left: auto;
}
.sv-event.assistant .sv-event-header { background: rgba(63, 185, 80, 0.08); }
.sv-event.assistant .sv-event-type { background: rgba(63, 185, 80, 0.15); color: var(--green); }

/* Tool call */
.sv-event.tool-call {
  border-left: 3px solid var(--orange);
  margin-left: 40px;
}
.sv-event.tool-call .sv-event-header { background: rgba(210, 153, 34, 0.08); }
.sv-event.tool-call .sv-event-type { background: rgba(210, 153, 34, 0.15); color: var(--orange); }

.sv-tool-name {
  font-weight: 600;
  color: var(--orange);
  font-size: 13px;
}

/* Tool result */
.sv-event.tool-result {
  border-left: 3px solid var(--text-secondary);
  margin-left: 40px;
  background: var(--bg-secondary);
}
.sv-event.tool-result .sv-event-header { background: var(--bg-tertiary); }
.sv-event.tool-result .sv-event-type { background: rgba(139, 148, 158, 0.15); color: var(--text-secondary); }

/* Thinking change - inline pill */
.sv-event.thinking-change {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: none;
  border-radius: 20px;
  background: rgba(188, 140, 255, 0.1);
  border: 1px solid rgba(188, 140, 255, 0.3);
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--purple);
}

.sv-event.thinking-change .sv-event-body { display: none; }

/* Model snapshot - info badge */
.sv-event.model-snapshot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: none;
  border-radius: 20px;
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.3);
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--accent);
}

.sv-event.model-snapshot .sv-event-body { display: none; }

/* Session start */
.sv-event.session-start {
  border-left: 3px solid var(--purple);
  text-align: center;
}
.sv-event.session-start .sv-event-header { background: rgba(188, 140, 255, 0.08); }
.sv-event.session-start .sv-event-type { background: rgba(188, 140, 255, 0.15); color: var(--purple); }

/* Collapsible details */
.sv-details {
  margin-top: 8px;
}

.sv-details summary {
  cursor: pointer;
  font-size: 12px;
  color: var(--accent);
  padding: 4px 0;
  user-select: none;
}

.sv-details summary:hover {
  color: var(--accent-hover);
}

.sv-details pre {
  margin-top: 8px;
  font-size: 12px;
  max-height: 400px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.sv-text-content {
  white-space: pre-wrap;
  word-break: break-word;
}

.sv-show-more {
  display: inline-block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.sv-show-more:hover {
  color: var(--accent-hover);
}

/* Tool call group connector */
.sv-tool-group {
  margin-left: 40px;
  padding-left: 16px;
  border-left: 2px solid var(--border);
  margin-bottom: 12px;
}

.sv-tool-group .sv-event {
  margin-left: 0;
}

/* Login prompt */
.sv-login {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 20px;
  color: var(--text-secondary);
}

.sv-login-icon {
  font-size: 64px;
  opacity: 0.3;
}

.sv-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.2s;
}

.sv-login-btn:hover {
  opacity: 0.85;
}

/* Loading spinner */
.sv-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-secondary);
}

.sv-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: sv-spin 0.8s linear infinite;
  margin-right: 12px;
}

@keyframes sv-spin {
  to { transform: rotate(360deg); }
}

/* Pagination */
.sv-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  border-top: 1px solid var(--border);
}

.sv-pagination button {
  padding: 6px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  transition: background 0.15s;
}

.sv-pagination button:hover:not(:disabled) {
  background: var(--border);
}

.sv-pagination button:disabled {
  opacity: 0.4;
  cursor: default;
}

.sv-pagination span {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 900px) {
  .sv-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 0.3s;
  }

  .sv-sidebar.open {
    transform: translateX(0);
  }

  .sv-event.user,
  .sv-event.assistant {
    max-width: 100%;
    margin-left: 0;
  }

  .sv-tool-group,
  .sv-event.tool-call,
  .sv-event.tool-result {
    margin-left: 0;
  }
}

@media (max-width: 600px) {
  .sv-sidebar { width: 280px; min-width: 280px; }
  .sv-timeline { padding: 16px; }
  .sv-filters { padding: 8px 16px; }
  .sv-stats { padding: 8px 16px; }
}