/* Theme tokens. Light is the default; dark applies via system preference
   (unless the user forced light) or the manual toggle. The two dark blocks
   must be kept byte-identical. */
:root {
  --bg: #f3f5f7; --panel: #ffffff; --panel-2: #e9edf1; --line: #d7dde4;
  --ink: #1b2733; --ink-2: #57646f; --accent: #0b62c4; --accent-contrast: #ffffff;
  --ok: #187a4b; --warn: #8a6100; --crit: #c22e26; --info: #647078;
  --mono: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1419; --panel: #161c24; --panel-2: #1d2530; --line: #2a3442;
    --ink: #dce3ea; --ink-2: #8b98a5; --accent: #4c9aff; --accent-contrast: #08101c;
    --ok: #3fb27f; --warn: #d9a13b; --crit: #e0564f; --info: #6b7684;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1419; --panel: #161c24; --panel-2: #1d2530; --line: #2a3442;
  --ink: #dce3ea; --ink-2: #8b98a5; --accent: #4c9aff; --accent-contrast: #08101c;
  --ok: #3fb27f; --warn: #d9a13b; --crit: #e0564f; --info: #6b7684;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
       font: 14px/1.45 system-ui, sans-serif; }
a { color: var(--accent); text-decoration: none; }
code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px;
       font-size: 12px; color: var(--ink-2); word-break: break-all;
       font-family: var(--mono); }
.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 16px;
          background: var(--panel); border-bottom: 1px solid var(--line); }
.logo { font-weight: 700; letter-spacing: 1px; }
.topbar nav a { margin-right: 12px; color: var(--ink-2); }
.topbar nav a:hover { color: var(--ink); }
.badge { border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px;
         font-size: 12px; color: var(--ink-2); margin-left: auto; }
.badge-readonly { border-color: var(--ok); color: var(--ok); }
.badge-warn { border-color: var(--warn); color: var(--warn); margin-left: 0; }
.icon-btn { background: none; border: 1px solid var(--line); border-radius: 6px;
            color: var(--ink-2); padding: 2px 8px; font-size: 14px; cursor: pointer; }
.icon-btn:hover { color: var(--ink); }
.inbox { display: grid; grid-template-columns: minmax(280px, 380px) 1fr;
         height: calc(100vh - 45px); }
#issue-list { overflow-y: auto; }
#detail { overflow-y: auto; padding: 20px 28px; }
.issue-row { display: flex; gap: 10px; padding: 10px 12px; color: var(--ink);
             border-bottom: 1px solid var(--line); align-items: flex-start; }
.issue-row:hover { background: var(--panel-2); }
.issue-row.selected { background: var(--panel-2);
                      box-shadow: inset 3px 0 0 var(--accent); }
.sev { width: 9px; height: 9px; border-radius: 50%; display: inline-block;
       margin-top: 5px; background: var(--info); flex: none; }
.sev-critical { background: var(--crit); } .sev-warning { background: var(--warn); }
.sev-info { background: var(--info); }
.issue-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.issue-title { font-weight: 600; overflow: hidden; text-overflow: ellipsis;
               white-space: nowrap; }
.issue-meta, .issue-age, .issue-cost { color: var(--ink-2); font-size: 12px; }
.issue-progress { color: var(--ink-2); font-size: 11px; font-style: italic;
                  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.issue-side { text-align: right; display: flex; flex-direction: column;
              gap: 2px; flex: none; }
.ai-status { font-size: 12px; }
.ai-ready { color: var(--ok); } .ai-failed { color: var(--crit); }
.ai-investigating { color: var(--accent); } .ai-queued { color: var(--ink-2); }
.detail-head h1 { margin: 0 0 4px; font-size: 20px; }
.detail-meta { color: var(--ink-2); margin: 0 0 16px; }
.report h2 { font-size: 15px; margin: 20px 0 8px; }
.evidence { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.ruled-out summary { cursor: pointer; color: var(--ink-2); margin: 16px 0 8px; }
.honesty { border: 1px dashed var(--line); border-radius: 8px; padding: 10px 14px;
           margin-top: 20px; color: var(--ink-2); }
.honesty h2 { margin-top: 0; color: var(--ink); }
.failed .stderr { background: var(--panel); border: 1px solid var(--crit);
                  border-radius: 8px; padding: 10px; white-space: pre-wrap;
                  color: var(--ink-2); max-height: 240px; overflow: auto;
                  font-family: var(--mono); }
.placeholder { color: var(--ink-2); padding: 24px 0; }
button { background: var(--accent); color: var(--accent-contrast); border: 0;
         border-radius: 6px; padding: 6px 14px; font-weight: 600; cursor: pointer; }
button.secondary { background: var(--panel-2); color: var(--ink);
                   border: 1px solid var(--line); }
/* feedback / grading (Task 10, v1) */
.feedback-bar { display: flex; gap: 8px; align-items: center; margin-bottom: 12px;
                flex-wrap: wrap; }
.thumb.active { outline: 2px solid var(--accent); }
.grade-note { color: var(--ink-2); font-size: 12px; }
/* chat (Task 11, v1) */
.chat { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 14px; }
.chat h2 { font-size: 15px; }
.msg { padding: 8px 12px; border-radius: 8px; margin: 6px 0; max-width: 85%;
       white-space: pre-wrap; }
.msg-user { background: var(--panel-2); margin-left: auto; }
.msg-assistant { background: var(--panel); border: 1px solid var(--line); }
.chat-error { border-color: var(--crit); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.chips button { background: var(--panel-2); color: var(--ink);
                border: 1px solid var(--line); font-weight: 400; }
.chat-form { display: flex; gap: 8px; margin-top: 8px; }
.chat-form input[type=text] { flex: 1; background: var(--panel);
  border: 1px solid var(--line); border-radius: 6px; color: var(--ink);
  padding: 8px 10px; }
/* stats (Task 12, v1) */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
         gap: 12px; margin: 16px 0; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
        padding: 14px; }
.tile .num { font-size: 26px; font-weight: 700; }
.tile .label { color: var(--ink-2); font-size: 12px; }
table.plain { border-collapse: collapse; }
table.plain td, table.plain th { border-bottom: 1px solid var(--line);
  padding: 6px 12px 6px 0; text-align: left; color: var(--ink); }
table.plain th { color: var(--ink-2); font-weight: 600; }

/* login (v2 Task 4) */
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card { background: var(--panel); border: 1px solid var(--line);
              border-radius: 12px; padding: 32px;
              width: min(360px, 90vw); }
.login-card .logo { text-align: center; margin: 0 0 16px; font-size: 22px; }
.login-card form { display: grid; gap: 14px; }
.login-card label { display: grid; gap: 4px; font-size: 13px;
                    color: var(--ink-2); }
.login-card input { background: var(--panel-2); border: 1px solid var(--line);
                    border-radius: 6px; color: var(--ink); padding: 9px 10px;
                    font-size: 14px; }
.login-error { color: var(--crit); margin: 0 0 12px; font-size: 13px; }
.user-menu { display: flex; gap: 8px; align-items: center;
             color: var(--ink-2); font-size: 13px; }
.user-menu form { margin: 0; }

/* polish (v2 Task 6) */
.topbar nav a[aria-current="page"] { color: var(--ink);
  box-shadow: 0 2px 0 var(--accent); }
.page { padding: 20px 28px; max-width: 900px; }
.page-narrow { max-width: 700px; }
.page-actions { margin-top: 20px; }
.empty-state { padding: 24px 16px; display: grid; gap: 10px; }
.empty-state p { margin: 0; }
.skeleton-row { height: 58px; border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--panel) 25%, var(--panel-2) 50%,
                              var(--panel) 75%);
  background-size: 200% 100%; animation: shimmer 1.2s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }
.spinner { display: none; width: 12px; height: 12px;
  border: 2px solid transparent; border-top-color: currentColor;
  border-radius: 50%; animation: spin 0.8s linear infinite;
  vertical-align: -2px; }
.htmx-request .spinner, .htmx-request.spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* inbox filters (v2 Task 7) */
.list-pane { display: flex; flex-direction: column; min-height: 0;
             border-right: 1px solid var(--line); background: var(--panel); }
.list-pane #issue-list { flex: 1; border-right: 0; }
.filters { padding: 10px 12px; border-bottom: 1px solid var(--line);
           display: grid; gap: 8px; }
.filters input[type=search] { width: 100%; background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 6px; color: var(--ink);
  padding: 7px 10px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-toggle { border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 10px; font-size: 12px; color: var(--ink-2); cursor: pointer;
  user-select: none; }
.chip-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.chip-toggle:has(input:checked), .chip-toggle.active {
  border-color: var(--accent); color: var(--accent); }
/* The checkbox itself is visually hidden, so the label has to show its focus. */
.chip-toggle:has(input:focus-visible) {
  outline: 2px solid var(--accent); outline-offset: 1px; }
/* report redesign (v2 Task 8) */
.summary-card { background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px; margin: 0 0 8px; }
.summary-card h2 { margin: 0 0 6px; }
.root-cause { font-size: 15px; margin: 0 0 10px; }
.conf-meter { display: flex; align-items: center; gap: 4px; margin: 0 0 12px; }
.conf-step { width: 22px; height: 6px; border-radius: 3px;
             background: var(--panel-2); }
.conf-label { margin-left: 6px; font-size: 12px; color: var(--ink-2); }
.conf-high .conf-step { background: var(--ok); }
.conf-medium .conf-step:nth-child(-n+2) { background: var(--warn); }
.conf-low .conf-step:nth-child(1) { background: var(--crit); }
.action-row { display: flex; gap: 8px; }
.evidence-card { background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; max-width: 420px; }
.evidence-card a, .evidence-card span { display: block; margin-bottom: 4px; }
.hypotheses { list-style: none; padding: 0; display: grid; gap: 6px; }
.hypothesis-card { border: 1px dashed var(--line); border-radius: 8px;
  padding: 8px 10px; color: var(--ink-2); }
.hypothesis-card s { color: var(--ink); }
.hypothesis-card .disproof { display: block; font-size: 12px; }

/* stats charts (v2 Task 9) */
svg.chart { width: 100%; height: auto; max-width: 720px; display: block;
            margin: 8px 0 4px; }
.chart-bar { fill: var(--accent); }
.chart-axis { stroke: var(--line); stroke-width: 1; }
.chart text { fill: var(--ink-2); font-size: 12px;
              font-family: system-ui, sans-serif; }
.range-picker { display: flex; gap: 6px; margin: 4px 0 12px; }
.spend-note { color: var(--ink-2); font-size: 13px; margin: 0 0 16px; }

/* responsive (v2 Task 10) */
.back-btn { display: none; }
@media (max-width: 820px) {
  .inbox { grid-template-columns: 1fr; }
  .inbox.show-detail .list-pane { display: none; }
  .inbox:not(.show-detail) #detail { display: none; }
  .back-btn { display: inline-block; margin: 0 0 12px; }
  #detail { padding: 14px 16px; }
  .topbar { gap: 10px; overflow-x: auto; }
  .topbar nav { display: flex; }
  button, .chip-toggle { min-height: 40px; display: inline-flex;
                         align-items: center; }
  .chat-form { position: sticky; bottom: 0; background: var(--bg);
               padding: 8px 0; }
}