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

:root {
  --bg:       #0f1117;
  --surface:  #1a1d27;
  --border:   #2a2d3a;
  --accent:   #6c8ef5;
  --text:     #e2e4f0;
  --muted:    #6b7280;
  --green:    #4ade80;
  --orange:   #fb923c;
  --red:      #f87171;
}

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

header {
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-shrink: 0;
  overflow-x: auto;
  flex-wrap: nowrap;
}

header > * { flex-shrink: 0; }

header h1 { font-size: 1.1rem; font-weight: 600; color: var(--accent); }

#anchor-config {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--muted);
}

#anchor-config select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.8rem;
}

#btn-sync {
  background: var(--border);
  color: var(--text);
  border: none;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  margin-left: auto;
  transition: background 0.15s;
}
#btn-sync:hover { background: var(--accent); }
#btn-sync.syncing { opacity: 0.5; pointer-events: none; }

#summary {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  gap: 20px;
}

#summary .val { color: var(--text); font-weight: 600; }
#summary .cost { color: var(--green); font-weight: 700; font-size: 1rem; }

#toolbar {
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#btn-zoom-out {
  background: var(--border);
  color: var(--text);
  border: none;
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
}

#btn-zoom-out:hover:not(:disabled) { background: var(--accent); }
#btn-zoom-out:disabled { opacity: 0.3; cursor: default; }

#range-label {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Chart */
#chart-area {
  padding: 16px 24px 4px;
  flex-shrink: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

#chart {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 140px;
  width: 100%;
  margin-top: 16px;
}

#chart-labels {
  gap: 1px;
}

.bar-wrapper {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  cursor: pointer;
  position: relative;
}

.bar-in-chain { gap: 0; }
.bar-spacer {
  width: 12px; min-width: 12px; flex: 0 0 12px;
  position: relative;
  align-self: stretch;
}
.bar-spacer::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--muted);
}
.day-spacer { width: 6px; min-width: 6px; flex: 0 0 6px; }
#chart-labels .bar-spacer { display: none; }
.bar-spacer.chain-spacer::before { display: none; }

.bar {
  width: 100%;
  min-width: 4px;
  background: #5b7a9d;
  border-radius: 3px 3px 0 0;
  opacity: 0.7;
  transition: opacity 0.15s, background 0.15s;
}

.bar-wrapper:hover .bar {
  opacity: 1;
  background: #7a9dc0;
}

.bar-tooltip {
  display: none;
  position: absolute;
  top: -32px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  white-space: nowrap;
  z-index: 10;
  color: var(--text);
  font-weight: 600;
  pointer-events: none;
}

.bar-wrapper:hover .bar-tooltip { display: block; }

#chart-labels {
  display: flex;
  gap: 2px;
  padding: 4px 0 8px;
}

.chart-label {
  flex: 1;
  font-size: 0.55rem;
  color: var(--muted);
  text-align: center;
  white-space: nowrap;
}

/* Content - blocks below chart */
#content {
  flex: 1;
  overflow-y: auto;
  padding: 12px 24px;
}

.block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
}

.block-header {
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: background 0.15s;
  font-size: 0.8rem;
}

.block-date {
  color: var(--muted);
  white-space: nowrap;
}

.block-dur {
  color: var(--muted);
  font-family: monospace;
  white-space: nowrap;
  min-width: 50px;
}

.block-msg {
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.block-count {
  white-space: nowrap;
}

.block-header:hover { background: #22263a; }
.block-header .block-label { pointer-events: none; }

.block-label {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--text);
}

.block-stats {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
}

.block-cost { color: var(--green); font-weight: 700; }
.block-count { color: var(--muted); }

.block-entries {
  display: none;
  border-top: 1px solid var(--border);
}

.block-entries.open { display: block; }

.entry {
  padding: 8px 16px 8px 28px;
  display: grid;
  grid-template-columns: 90px 1fr 80px 70px 60px;
  gap: 10px;
  align-items: center;
  font-size: 0.78rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}

.entry:last-child { border-bottom: none; }
.entry:hover { background: #1e2d5a; }

.entry-flat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 8px;
  margin-bottom: 4px;
  padding: 10px 16px;
}

.entry-time { font-family: monospace; color: var(--muted); }
.entry-model { color: var(--accent); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.entry-tokens { color: var(--muted); text-align: right; }
.entry-cost { color: var(--green); font-weight: 600; text-align: right; }
.entry-type { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; text-align: right; }

/* Modal */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}

.modal.hidden { display: none; }

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  max-width: 850px; width: 90%; max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

#modal-close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: none;
  color: var(--muted); font-size: 1.2rem; cursor: pointer;
}

/* Chain messages */
.chain-msg {
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
}

.chain-user {
  background: #1e2d5a;
  border-left: 3px solid var(--accent);
}

.chain-assistant {
  background: #1a2a2a;
  border-left: 3px solid var(--green);
}

.chain-header {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 6px;
  font-size: 0.72rem;
}

.chain-role {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chain-user .chain-role { color: var(--accent); }
.chain-assistant .chain-role { color: var(--green); }

.chain-time  { color: var(--muted); font-family: monospace; }
.chain-model { color: var(--muted); }
.chain-cost  { color: var(--green); font-weight: 600; }

/* Chain summary in modal */
.chain-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  margin-bottom: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.chain-summary-cost {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
}

.chain-summary-count {
  font-size: 0.75rem;
  color: var(--muted);
}

/* Chain cost label above first bar */
.chain-cost-label {
  font-size: 0.55rem;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  position: absolute;
  top: -2px;
  transform: translateY(-100%);
}

.chain-highlighted {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 12px rgba(108, 142, 245, 0.3);
}

.chain-body {
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 300px;
  overflow-y: auto;
  color: var(--text);
}

/* Raw JSON toggle */
.raw-json {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 8px;
}

.raw-json summary {
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--muted);
}

#modal-content {
  font-family: monospace;
  font-size: 0.72rem;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--muted);
  line-height: 1.4;
  max-height: 300px;
  overflow-y: auto;
  margin-top: 8px;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }