:root {
  color-scheme: light;
  --bg: #f4f4f2;
  --surface: #ffffff;
  --ink: #15171d;
  --line: rgba(20, 22, 30, .08);
  --accent: #4c5ad4;
  --shadow: 0 1px 2px rgba(20, 22, 30, .04), 0 8px 24px -12px rgba(20, 22, 30, .16);
  --r-l: 16px;
  --font: "Inter", "Noto Sans JP", system-ui, -apple-system, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0e1014;
    --surface: #151821;
    --ink: #e9ebf1;
    --line: rgba(255, 255, 255, .07);
    --accent: #7d8bff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -14px rgba(0, 0, 0, .6);
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}
.page {
  max-width: 1360px;
  margin: 0 auto;
  padding: 28px 28px 60px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  padding: 18px;
  box-shadow: var(--shadow);
}
h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  margin: 10px 0 2px;
}
@media (max-width: 600px) {
  .page {
    padding: 20px 14px;
  }
}
:root[data-theme="light"] {
  color-scheme:light;
  --bg:#f4f4f2;
  --surface:#fff;
  --ink:#15171d;
  --line:rgba(20,22,30,.08);
  --accent:#4c5ad4;
}
:root[data-theme="dark"] {
  color-scheme:dark;
  --bg:#0e1014;
  --surface:#151821;
  --ink:#e9ebf1;
  --line:rgba(255,255,255,.07);
  --accent:#7d8bff;
}
a {
  color:inherit;
  text-decoration:none
}
button,input,select {
  font:inherit;
  color:inherit
}
button,select,input {
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--surface);
  padding:9px 12px
}
button {
  cursor:pointer
}
button:hover,a:hover {
  color:var(--accent)
}
button:disabled {
  opacity:.5;
  cursor:default
}
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible {
  outline:2px solid var(--accent);
  outline-offset:3px
}
.primary {
  background:var(--accent);
  color:white
}
.primary:hover {
  color:white;
  filter:brightness(1.1)
}
.app {
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  min-height:100vh
}
.side {
  position:sticky;
  top:0;
  height:100vh;
  background:var(--surface);
  border-right:1px solid var(--line);
  padding:20px 14px;
  display:flex;
  flex-direction:column
}
.brand {
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 10px 24px;
  font-weight:700
}
.logo {
  width:28px;
  height:28px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--accent),#9aa4ff)
}
.nav a {
  display:block;
  padding:10px;
  border-radius:8px
}
.active {
  color:var(--accent);
  background:color-mix(in srgb,var(--accent) 10%,transparent)
}
.me {
  margin-top:auto;
  padding:12px;
  display:grid;
  gap:6px;
  overflow-wrap:anywhere
}
.me small,.muted {
  opacity:.65
}
.topbar {
  padding:16px 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line)
}
.main {
  min-width:0
}
.tabs {
  display:flex;
  gap:8px;
  margin:24px 0
}
.tabs a {
  padding:9px 16px;
  border-radius:8px
}
.card {
  margin:20px 0
}
.card h2 {
  font-size:15px;
  margin:0 0 18px
}
.stack {
  display:grid;
  gap:18px;
  max-width:360px
}
.stack label {
  display:grid;
  gap:8px
}
.inline {
  display:flex;
  align-items:end;
  gap:12px;
  flex-wrap:wrap
}
.inline label {
  display:grid;
  gap:6px
}
.table-scroll {
  overflow-x:auto
}
table {
  width:100%;
  border-collapse:collapse;
  text-align:left
}
td,th {
  padding:12px 10px;
  border-bottom:1px solid var(--line);
  white-space:nowrap
}
th {
  font-size:12px;
  font-weight:600
}
td {
  font-size:13px
}
.matrix td,.matrix th:not(:first-child) {
  text-align:center
}
.matrix input[type=checkbox] {
  width:18px;
  height:18px;
  accent-color:var(--accent);
  cursor:pointer
}
.matrix input:disabled {
  cursor:default
}
.badge {
  padding:3px 8px;
  border-radius:99px
}
.badge.active {
  color:#22a06b;
  background:#22a06b18
}
.badge.disabled {
  color:#e5484d;
  background:#e5484d18
}
pre {
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  min-width:220px;
  max-width:480px;
  font-size:12px
}
.invitation {
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 0;
  flex-wrap:wrap;
  border-bottom:1px solid var(--line)
}
.invitation input {
  flex:1;
  min-width:200px
}
.pagination {
  display:flex;
  justify-content:space-between;
  margin-top:20px
}
.greeting {
  padding:32px
}
#feedback {
  color:#e5484d
}
#feedback h1 {
  font-size:14px
}
@media(max-width:760px) {
  .app {
    grid-template-columns:1fr
  }
  .side {
    position:static;
    height:auto;
    padding:12px;
    border-right:0;
    border-bottom:1px solid var(--line)
  }
  .brand {
    padding:4px 10px 12px
  }
  .nav {
    display:flex;
    gap:8px
  }
  .me {
    display:none
  }
  .topbar {
    padding:12px 14px
  }
  .page {
    padding:16px 14px
  }
  .inline input {
    max-width:100%
  }
  .tabs {
    margin:16px 0
  }
  .card {
    padding:14px
  }
}

/* M1 inbox and detail tokens follow the reference prototype. */
:root {
  --s-proposed:#e5a000;
  --s-todo:#8b8d98;
  --s-doing:#3e63dd;
  --s-review:#8e4ec6;
  --s-verify:#14b8a6;
  --s-done:#22a06b;
  --s-blocked:#e5484d}

.muted {
  color:var(--muted,#777b88)}
.mono {
  font-family:ui-monospace,SFMono-Regular,monospace}
.nav-disabled {
  display:block;
  padding:10px 12px;
  opacity:.38;
  cursor:not-allowed}
.inbox-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin:0 0 22px}
.inbox-heading p {
  margin:6px 0 0}
.kpi-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px}
.kpi {
  display:flex;
  flex-direction:column;
  gap:10px}
.kpi strong {
  font-size:34px;
  line-height:1.1;
  letter-spacing:-.04em}
.kpi-dueToday strong {
  color:var(--s-proposed)}
.kpi-blocked strong {
  color:var(--s-blocked)}
.kpi-done7 strong {
  color:var(--s-done)}
.inbox-grid {
  display:grid;
  grid-template-columns:minmax(0,1.65fr) minmax(250px,1fr);
  gap:22px}
.inbox-section h2 {
  margin:22px 0 10px;
  font-size:14px;
  display:flex;
  align-items:center;
  gap:8px}
.count {
  font:11px ui-monospace,monospace;
  background:var(--line);
  padding:2px 6px;
  border-radius:6px}
.item-rows {
  padding:6px}
.item-row {
  display:grid;
  grid-template-columns:32px minmax(0,1fr) auto;
  gap:12px;
  align-items:center;
  padding:13px 10px;
  border-radius:10px;
  transition:opacity .15s,background .15s}
.item-row+.item-row {
  border-top:1px solid var(--line)}
.item-row:hover {
  background:var(--line)}
.item-row.htmx-swapping {
  opacity:0;
  transform:translateX(8px)}
.tbadge {
  display:inline-grid;
  place-items:center;
  width:30px;
  height:30px;
  border:1px solid color-mix(in srgb,currentColor 22%,transparent);
  border-radius:8px;
  font-size:12px;
  font-weight:750;
  background:color-mix(in srgb,currentColor 6%,transparent)}
.t-task {
  color:#3e63dd}
.t-requirement {
  color:#8e4ec6}
.t-feedback {
  color:#e5a000}
.t-bug {
  color:#e5484d}
.t-approval {
  color:#14b8a6}
.item-title {
  font-size:13px;
  font-weight:650;
  color:var(--ink);
  text-decoration:none;
  display:block}
.item-title:hover {
  text-decoration:underline}
.item-main {
  min-width:0;
  overflow-wrap:anywhere}
.item-meta {
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px;
  font-size:10.5px;
  color:var(--muted,#777b88);
  margin-top:5px}
.item-meta .mono {
  font-size:9px}
.item-right {
  display:flex;
  align-items:center;
  gap:8px;
  position:relative}
.avatar {
  display:inline-grid;
  place-items:center;
  flex-shrink:0;
  width:24px;
  height:24px;
  border-radius:50%;
  background:color-mix(in srgb,var(--accent) 16%,var(--surface));
  color:var(--accent);
  font-size:10px;
  font-weight:700}
.pill {
  display:inline-flex;
  align-items:center;
  gap:5px;
  border-radius:6px;
  padding:3px 7px;
  font-size:10.5px;
  white-space:nowrap;
  color:var(--pc);
  background:color-mix(in srgb,var(--pc) 10%,transparent);
  border:1px solid color-mix(in srgb,var(--pc) 18%,transparent)}
.pill:before {
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:currentColor}
.s-proposed {
  --pc:var(--s-proposed)}
.s-todo {
  --pc:var(--s-todo)}
.s-doing {
  --pc:var(--s-doing)}
.s-review {
  --pc:var(--s-review)}
.s-verify {
  --pc:var(--s-verify)}
.s-done {
  --pc:var(--s-done)}
.s-blocked {
  --pc:var(--s-blocked)}
.overdue {
  color:var(--s-blocked)}
.due-soon {
  color:var(--s-proposed)}
.quick {
  display:flex;
  gap:5px;
  position:absolute;
  right:0;
  bottom:100%;
  padding:5px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:8px;
  opacity:0;
  pointer-events:none;
  z-index:2;
  white-space:nowrap}
.item-row:hover .quick,.item-row:focus-within .quick {
  opacity:1;
  pointer-events:auto}
.quick form,.action-buttons form {
  margin:0}
.quick button {
  padding:4px 8px;
  font-size:11px}
.inbox-rail {
  padding-top:22px;
  display:flex;
  flex-direction:column;
  gap:16px}
.project-summary {
  display:flex;
  gap:8px;
  align-items:center;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:13px}
.recent-item {
  display:flex;
  gap:8px;
  padding:12px 0;
  color:inherit;
  text-decoration:none;
  font-size:12px}
.recent-item small {
  display:block;
  margin-top:4px}
.empty {
  padding:10px;
  font-size:12px}
.detail-heading {
  display:flex;
  align-items:center;
  gap:14px;
  margin:20px 0 24px}
.detail-heading .tbadge {
  width:44px;
  height:44px;
  font-size:18px}
.detail-heading h1 {
  margin:0 0 8px;
  overflow-wrap:anywhere}
.detail-grid {
  display:grid;
  grid-template-columns:minmax(0,1fr) 290px;
  gap:24px}
.next-action {
  border-left:3px solid var(--accent)}
.next-action h2 {
  font-size:14px}
.next-action p {
  font-size:13px;
  color:var(--muted,#777b88)}
.action-buttons {
  display:flex;
  flex-wrap:wrap;
  gap:8px}
.description {
  margin-top:16px}
.description p,.event-text {
  white-space:pre-wrap;
  overflow-wrap:anywhere}
.comment-form {
  display:flex;
  gap:10px;
  align-items:center;
  margin:24px 0}
.comment-form textarea {
  flex:1;
  min-width:0;
  resize:vertical}
.timeline {
  padding:8px 0}
.timeline-event {
  position:relative;
  margin-left:14px;
  padding:0 0 26px 28px;
  border-left:1px solid var(--line)}
.timeline-node {
  position:absolute;
  left:-13px;
  top:0;
  width:26px;
  height:26px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:50%;
  background:var(--surface);
  color:var(--muted,#777b88)}
.event-who {
  display:flex;
  align-items:center;
  gap:7px;
  flex-wrap:wrap;
  font-size:12px;
  min-height:26px}
.event-who time {
  margin-left:auto;
  font-size:11px}
.tag {
  font-size:10px;
  background:var(--line);
  padding:2px 5px;
  border-radius:4px}
.tag.agent {
  color:var(--accent)}
.event-diff {
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:10px}
.event-text {
  font-size:13px;
  margin:10px 0 0}
.detail-rail {
  display:flex;
  flex-direction:column;
  gap:16px;
  min-width:0}
.detail-rail dl {
  margin:0;
  display:grid;
  grid-template-columns:80px minmax(0,1fr);
  gap:16px 10px;
  font-size:12px}
.detail-rail dt {
  color:var(--muted,#777b88)}
.detail-rail dd {
  margin:0;
  overflow-wrap:anywhere}
.item-link {
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  color:inherit;
  text-decoration:none;
  padding:8px 0}
.item-link small {
  width:100%;
  font-size:10px;
  overflow-wrap:anywhere;
  color:var(--muted,#777b88)}
details summary {
  cursor:pointer;
  font-weight:600}
details form {
  margin-top:16px}
.new-dialog {
  width:min(640px,calc(100% - 24px));
  max-height:90vh;
  overflow:auto;
  border:1px solid var(--line);
  border-radius:18px;
  padding:26px;
  background:var(--surface);
  color:var(--ink);
  box-shadow:var(--shadow)}
dialog::backdrop {
  background:#0e101480;
  backdrop-filter:blur(3px)}
.new-dialog h2 {
  margin-top:0}
.new-dialog label,.detail-rail form>label {
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-bottom:14px;
  font-size:12px}
.form-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px}
.form-grid label {
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:12px}
.form-grid select {
  width:100%}
.assignee-chips {
  display:flex;
  flex-wrap:wrap;
  gap:6px}
.assignee-chips label {
  display:flex;
  flex-direction:row;
  align-items:center;
  gap:5px;
  border:1px solid var(--line);
  border-radius:20px;
  padding:5px 8px;
  font-size:11px}
.assignee-chips input {
  width:auto}
.assignee-chips label:has(input:checked) {
  border-color:var(--accent);
  color:var(--accent)}
fieldset {
  border:1px solid var(--line);
  border-radius:10px;
  margin:12px 0}
legend {
  font-size:12px}
.attachment-placeholder {
  border:1px dashed var(--line);
  border-radius:10px;
  padding:20px;
  text-align:center;
  color:var(--muted,#777b88);
  font-size:12px}
.dialog-actions {
  display:flex;
  justify-content:flex-end;
  gap:8px;
  margin-top:20px}
textarea {
  font:inherit;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--surface);
  color:var(--ink);
  padding:10px;
  width:100%}
.primary {
  background:var(--accent);
  color:white;
  border-color:var(--accent)}
.danger:hover {
  color:var(--s-blocked);
  border-color:var(--s-blocked)}

@media(max-width:1150px) {
  .inbox-grid {
  grid-template-columns:1fr}
.inbox-rail {
  display:grid;
  grid-template-columns:1fr 1fr}
}

@media(max-width:760px) {
  .detail-grid {
  grid-template-columns:1fr}
.kpi-grid {
  grid-template-columns:repeat(2,minmax(0,1fr))}
.inbox-rail {
  grid-template-columns:1fr}
.item-row {
  grid-template-columns:28px minmax(0,1fr);
  gap:8px}
.item-right {
  grid-column:2;
  justify-content:space-between}
.quick {
  position:static;
  opacity:1;
  pointer-events:auto;
  padding:0;
  border:0;
  flex-wrap:wrap}
.item-meta .mono {
  overflow-wrap:anywhere}
.inbox-heading h1 {
  font-size:20px}
.form-grid {
  grid-template-columns:1fr}
.comment-form {
  flex-wrap:wrap}
.comment-form button {
  margin-left:auto}
.detail-heading .tbadge {
  flex-shrink:0}
.event-who time {
  margin-left:0}
}

@media(prefers-reduced-motion:reduce) {
  .item-row {
  transition:none}
}

:root {
  --s-proposed:#d99a1b;
  --s-todo:#7c8290;
  --s-doing:#3b82f6;
  --s-review:#8b5cf6;
  --muted:#858a98}

#inbox-content .card,#item-detail .card {
  margin:0}
#item-detail .description {
  margin-top:16px}
#inbox-content .muted,#item-detail .muted {
  opacity:1}
.inbox-heading {
  margin-bottom:20px}
.inbox-grid {
  margin-top:8px}
.decision-note {
  display:block;
  font-size:11px;
  color:var(--muted);
  margin:12px 0}
.decision-note textarea {
  margin-top:5px;
  min-height:38px}
.detail-heading .item-meta .mono {
  font-size:11px}

.login-page {
  min-height:100vh;
  min-height:100svh;
  display:grid;
  place-items:center;
  padding:24px 16px
}
.login-card {
  width:100%;
  max-width:420px;
  padding:36px 28px;
  text-align:center;
  overflow-wrap:anywhere
}
.login-brand {
  display:flex;
  justify-content:center;
  align-items:center;
  gap:12px
}
.login-brand h1 {margin:0;font-size:26px}
.login-tagline {margin:20px 0 28px}
.login-card .primary {width:100%;padding:12px 16px}
.login-invitation {margin:0 0 20px}
.login-hint {margin:18px 0 0}

/* Attachment cards follow the prototype's compact extension badges. */
.upload-picker{display:grid;gap:8px;margin:12px 0;min-width:0}
.drop{border:1.5px dashed var(--line-2);border-radius:12px;padding:18px;text-align:center;color:var(--muted);font-size:12.5px;cursor:pointer;transition:background .2s,border-color .2s;position:relative;background:var(--surface-2)}
.drop:hover,.drop.over,.drop:focus-within{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-ink)}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.drop small{display:block;font-size:11px;margin-top:3px}
.upload-icon{display:block;font-size:24px;margin-bottom:6px}
.files{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(160px,100%),1fr));gap:8px}
.file{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:10px;border:1px solid var(--line);background:var(--surface);position:relative;min-width:0}
.file-link{display:flex;align-items:center;gap:9px;min-width:0;flex:1;color:inherit;text-decoration:none}
.file .fico{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;flex:none;font:700 9.5px var(--mono);color:#fff;background:var(--fc,#7c8290);overflow:hidden}
.file .fico img{width:100%;height:100%;object-fit:cover}
.file .fn{min-width:0}
.file .fn b{display:block;font-size:12px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file .fn span{font-size:11px;color:var(--muted);font-family:var(--mono)}
.file .rm{position:absolute;top:-6px;right:-6px;width:22px;height:22px;padding:0;min-height:0;border-radius:50%;background:var(--ink);color:var(--surface);display:grid;place-items:center;opacity:0;transition:opacity .15s;box-shadow:0 1px 3px #0003}
.file:hover .rm,.file:focus-within .rm{opacity:1}
.attach-list{grid-template-columns:1fr}
.attachments-card{min-width:0}
.upload-picker progress{width:100%;accent-color:var(--accent)}
@media(hover:none){.file .rm{opacity:1}}

.signal-row { display:flex; align-items:center; gap:12px; padding:16px; border-bottom:1px solid var(--border); transition:opacity .2s, transform .2s; }
.signal-row:last-child { border-bottom:0; }
.signal-content { flex:1; min-width:0; }
.signal-content p { margin:4px 0 0; white-space:pre-wrap; overflow-wrap:anywhere; }
.signal-actions { display:flex; gap:8px; }
.signal-row.htmx-swapping { opacity:0; transform:translateX(12px); }
@media(max-width:700px) { .signal-row { flex-wrap:wrap; } .signal-actions { width:100%; justify-content:flex-end; } }
@media(prefers-reduced-motion:reduce) { .signal-row { transition:none; } }

.onboarding { margin-bottom: 20px; border-left: 3px solid var(--accent); }
.onboarding form { display: inline-block; margin-left: 8px; }
.calendar-entry { display: grid; grid-template-columns: 3.5em 1fr auto; gap: 8px; align-items: baseline; }
.calendar-entry time { color: var(--muted); font-variant-numeric: tabular-nums; }