/* Strata web app - layout on top of tokens.css + components.css (the Strata UI kit). Colours, type, radii and
   shadows come only from the kit's tokens. */
[hidden] { display: none !important; }
html, body { height: 100%; }
body { display: flex; flex-direction: column; overflow: hidden; }
main { flex: 1; min-height: 0; display: flex; }
.view { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.view[hidden] { display: none; }
.muted { color: var(--st-ink-muted); }
.small { font-size: var(--st-fs-xs); }
.card-title { font-weight: var(--st-fw-bold); font-size: var(--st-fs-base); color: var(--st-ink); }
.st-header { position: relative; z-index: 2; flex: none; }
.st-header .st-tabs { margin-left: var(--st-s-4); }
#drawer-close .st-icon { transform: rotate(-90deg); }

/* ---------------------------------------------------------------- chat */
.chat-scroll { flex: 1; min-height: 0; overflow-y: auto; }
.chat { max-width: 860px; margin: 0 auto; padding: var(--st-s-8) var(--st-s-6) var(--st-s-6); display: flex;
        flex-direction: column; gap: var(--st-s-6); }
.chat-empty { margin: 12vh auto 0; text-align: center; }
.chat-empty__title { font-weight: var(--st-fw-black); font-size: var(--st-fs-display); line-height: var(--st-lh-tight);
                     letter-spacing: -.02em; }
.chat-empty__sub { margin-top: var(--st-s-3); color: var(--st-ink-muted); }
.st-msg { width: 100%; }
.st-msg--assistant { align-self: flex-start; }
.st-msg--assistant .st-bubble { width: 100%; }
.st-msg--user .st-bubble { white-space: pre-wrap; overflow-wrap: anywhere; }
.st-bubble > :first-child { margin-top: 0; }
.st-bubble > :last-child { margin-bottom: 0; }
.st-bubble p, .st-bubble ul, .st-bubble ol { margin: 0 0 var(--st-s-3); }
.st-bubble ul, .st-bubble ol { padding-left: var(--st-s-6); }
.st-bubble li + li { margin-top: var(--st-s-1); }
.st-bubble h3 { font-size: var(--st-fs-lg); margin: var(--st-s-4) 0 var(--st-s-2); color: var(--st-ink); }
.st-bubble h4 { font-size: var(--st-fs-base); margin: var(--st-s-3) 0 var(--st-s-2); color: var(--st-ink); }
.st-bubble code.inline { font: 400 .9em var(--st-font-mono); background: var(--st-surface-2); border: 1px solid var(--st-line-soft);
                         border-radius: 6px; padding: 1px 5px; }
.st-bubble .st-code { margin: var(--st-s-3) 0; }
.st-bubble blockquote { margin: 0 0 var(--st-s-3); padding-left: var(--st-s-3); border-left: 3px solid var(--st-line);
                        color: var(--st-ink-muted); }
.st-bubble hr { border: 0; border-top: 1px solid var(--st-line); margin: var(--st-s-4) 0; }
.st-bubble table { border-collapse: collapse; margin: 0 0 var(--st-s-3); font-size: var(--st-fs-md); }
.st-bubble th, .st-bubble td { border: 1px solid var(--st-line); padding: 6px 10px; text-align: left; }
.msg-images { display: flex; flex-wrap: wrap; gap: var(--st-s-2); justify-content: flex-end; }
.msg-images img { max-width: 220px; max-height: 180px; border-radius: var(--st-r-md); border: 1px solid var(--st-line); }
.st-msg .st-collapse { width: 100%; }
.st-collapse__body.thinking { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 420px; overflow-y: auto; }
.st-msg__meta .st-btn--icon { width: 28px; height: 28px; }
.st-msg__meta .st-btn--icon .st-icon { width: 16px; height: 16px; }
.cursor::after { content: ""; display: inline-block; width: 8px; height: 1.1em; margin-left: 2px; vertical-align: -3px;
                 border-radius: 2px; background: var(--st-accent); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.msg-error { color: var(--st-danger-text); background: var(--st-danger-tint); border-radius: var(--st-r-md); padding: 10px 14px;
             font-size: var(--st-fs-md); }
/* MCP tool calls inside an answer: one compact collapsible block per call */
.st-bubble .tool-call { margin: var(--st-s-3) 0; }
.tool-call > summary { min-width: 0; padding: 8px 12px; }
.tool-call__name { font: 500 var(--st-fs-sm)/1.2 var(--st-font-mono); color: var(--st-ink); white-space: nowrap; }
.tool-call__preview { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--st-fs-xs); }
.tool-call .st-badge, .tool-call summary .small { flex: none; }
.tool-call[data-state="error"] { border-color: color-mix(in srgb, var(--st-danger) 35%, var(--st-line)); }
.tool-call[data-state="running"] .st-badge::before, .tool-call[data-state="writing"] .st-badge::before { animation: blink 1s steps(2) infinite; }
.tool-call__label { font-size: var(--st-fs-xs); font-weight: var(--st-fw-medium); color: var(--st-ink-muted); margin: var(--st-s-2) 0 var(--st-s-1); }
.tool-call__pre { margin: 0; padding: 10px 12px; max-height: 320px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere;
                  font: 400 12.5px/1.5 var(--st-font-mono); color: var(--st-ink-soft); background: var(--st-surface);
                  border: 1px solid var(--st-line-soft); border-radius: var(--st-r-sm); }

.composer-wrap { flex: none; padding: 0 var(--st-s-6) var(--st-s-6); }
.st-composer { max-width: 860px; margin: 0 auto; }
.st-composer textarea { max-height: 40vh; }
.st-btn--send { width: 42px; padding: 0; }
.composer-hint { font-size: var(--st-fs-xs); color: var(--st-ink-muted); margin-right: var(--st-s-2); font-variant-numeric: tabular-nums; }
.attachments { display: flex; flex-wrap: wrap; gap: var(--st-s-2); padding: 2px 4px 0; }
.st-composer.dragging { outline: 2px dashed var(--st-accent); outline-offset: 3px; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 6px 0 10px; border-radius: var(--st-r-pill);
        background: var(--st-surface-2); border: 1px solid var(--st-line); font-size: var(--st-fs-xs); color: var(--st-ink-soft); }
.chip .st-btn--icon { width: 22px; height: 22px; border-radius: 50%; }
.chip .st-btn--icon .st-icon { width: 14px; height: 14px; }

/* ---------------------------------------------------------------- monitor */
.view--monitor, .view--about { overflow-y: auto; }
.monitor, .about { max-width: 1240px; width: 100%; margin: 0 auto; padding: var(--st-s-6); display: flex; flex-direction: column;
                   gap: var(--st-s-5); }
.state-card { display: flex; flex-direction: column; gap: var(--st-s-3); }
.state-card__head { display: flex; align-items: center; gap: var(--st-s-4); flex-wrap: wrap; }
.badges { display: flex; gap: var(--st-s-2); flex-wrap: wrap; }
.badges .st-badge { opacity: .38; transition: opacity var(--st-dur); }
.badges .st-badge.on { opacity: 1; }
.state-card__row { display: flex; justify-content: space-between; gap: var(--st-s-4); font-size: var(--st-fs-sm);
                   font-weight: var(--st-fw-medium); font-variant-numeric: tabular-nums; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--st-s-4); }
.metric-card { padding: var(--st-s-4) var(--st-s-5); }
.st-metric__value small { font-size: var(--st-fs-md); font-weight: var(--st-fw-medium); color: var(--st-ink-muted); margin-left: 4px; }
.st-metric__sub { font-size: var(--st-fs-xs); color: var(--st-ink-muted); font-variant-numeric: tabular-nums; min-height: 1em; }
.st-metric__spark { display: block; overflow: visible; }
.st-metric__spark[data-tone="warn"] { color: var(--st-warn); }
.st-metric__spark[data-tone="info"] { color: var(--st-info); }
.monitor-row { display: grid; grid-template-columns: minmax(260px, 1fr) minmax(0, 2.4fr); gap: var(--st-s-4); }
.ctx-card { display: flex; flex-direction: column; gap: var(--st-s-2); }
.ctx-gauge { position: relative; width: 150px; height: 150px; margin: var(--st-s-2) auto var(--st-s-3); }
.ctx-gauge .st-gauge { width: 150px; height: 150px; }
.ctx-gauge .st-gauge__fill { transition: stroke-dasharray 400ms var(--st-ease); }
.ctx-gauge__label { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
                    font-size: var(--st-fs-xs); }
.ctx-gauge__pct { font-weight: var(--st-fw-black); font-size: var(--st-fs-xl); line-height: 1.1; font-variant-numeric: tabular-nums; }
.bar-row { display: flex; justify-content: space-between; font-size: var(--st-fs-sm); font-weight: var(--st-fw-medium);
           margin-top: var(--st-s-2); font-variant-numeric: tabular-nums; }
.req-card { display: flex; flex-direction: column; gap: var(--st-s-3); min-width: 0; }
.table-wrap { overflow-x: auto; }
.req-head { display: flex; align-items: center; justify-content: space-between; gap: var(--st-s-2); }
.table-wrap.all { max-height: 420px; overflow-y: auto; }
.req-totals { margin: 0; font-size: var(--st-fs-sm); }
.req-totals:empty { display: none; }
.mcp-card { display: flex; flex-direction: column; gap: var(--st-s-3); }
.mcp-server { display: flex; flex-direction: column; gap: var(--st-s-2); padding-top: var(--st-s-3); border-top: 1px solid var(--st-line-soft); }
.mcp-server:first-child { padding-top: 0; border-top: 0; }
.mcp-server__head { display: flex; align-items: center; gap: var(--st-s-2); flex-wrap: wrap; font-size: var(--st-fs-sm); }
.mcp-server__tools { display: flex; flex-wrap: wrap; gap: 6px; }
.mcp-server__tools .chip { height: 26px; padding: 0 10px; font-family: var(--st-font-mono); }
.mcp-note { margin: 0; }

/* ---------------------------------------------------------------- about */
.about { max-width: 860px; }
.about .st-card { display: flex; flex-direction: column; gap: var(--st-s-3); }
.about p { margin: 0; }
.facts { display: grid; grid-template-columns: minmax(140px, max-content) 1fr; gap: 10px var(--st-s-6); margin: 0; font-size: var(--st-fs-md); }
.facts dt { color: var(--st-ink-muted); }
.facts dd { margin: 0; color: var(--st-ink-soft); font-variant-numeric: tabular-nums; display: flex; align-items: center; gap: 6px;
            overflow-wrap: anywhere; }
.facts dd code { font: 400 13px var(--st-font-mono); }
.facts .st-btn--icon { width: 28px; height: 28px; }
.facts .st-btn--icon .st-icon { width: 16px; height: 16px; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: var(--st-s-4); font-size: var(--st-fs-sm);
              font-weight: var(--st-fw-medium); color: var(--st-ink-soft); }
.toggle-row .st-toggle { flex: none; }   /* a long label must not squeeze the switch */

/* ---------------------------------------------------------------- drawer */
.st-drawer { z-index: 40; }
.scrim { position: fixed; inset: 0; background: rgba(15, 23, 42, .18); z-index: 39; }
.seg { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; padding: 4px; background: var(--st-surface-2);
       border: 1px solid var(--st-line); border-radius: var(--st-r-md); }
.seg button { height: 32px; border: 0; border-radius: 10px; background: transparent; color: var(--st-ink-muted);
              font: 500 var(--st-fs-sm)/1 var(--st-font); cursor: pointer; }
.seg button[aria-checked="true"] { background: var(--st-surface); color: var(--st-ink); font-weight: var(--st-fw-bold);
                                   box-shadow: var(--st-sh-card); }
.drawer-actions { display: grid; grid-template-columns: 1fr 1fr; gap: var(--st-s-3); margin-top: var(--st-s-2); }
.st-toast { animation: toast-in 180ms var(--st-ease); }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } }

/* ---------------------------------------------------------------- narrow screens */
@media (max-width: 1000px) {
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .monitor-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .st-header { padding: 0 var(--st-s-3); gap: var(--st-s-2); }
  .st-header .st-tabs { margin-left: 0; }
  .st-tab { padding: 0 10px; }
  .st-tab .st-icon { display: none; }
  #pill-text { display: none; }
  .chat { padding: var(--st-s-5) var(--st-s-4); }
  .composer-wrap { padding: 0 var(--st-s-3) var(--st-s-3); }
  .monitor, .about { padding: var(--st-s-4); }
  .facts { grid-template-columns: 1fr; gap: 2px; }
  .facts dd { margin-bottom: var(--st-s-2); }
}