/* 証跡キーパー — Audit Trail Keeper
   Design DNA: Guard Indigo primary, semantic color = state language,
   sealed green = 封緘済み(不可逆). Corporate/Minimal, high density, WCAG AA.
   No emoji. Inline SVG line icons only. */

:root {
  /* Brand */
  --indigo: #1F3A8A;
  --indigo-700: #1A337A;
  --indigo-500: #2F4FB5;
  --indigo-100: #E5EAF7;
  --indigo-50: #F2F5FC;
  --teal: #0E7C86;

  /* Surfaces */
  --bg-app: #F6F7F9;
  --surface: #FFFFFF;
  --surface-sunken: #EEF0F3;
  --surface-inverse: #0F172A;
  --border: #D8DCE2;
  --border-strong: #B6BCC6;

  /* Text */
  --text-primary: #10151F;
  --text-secondary: #4A5462;
  --text-muted: #7A8494;
  --focus-ring: #2F4FB5;

  /* Semantic states */
  --sealed: #15803D;      --sealed-bg: #E8F5EC;   --sealed-border: #A7D7B5;
  --progress: #0E7C86;    --progress-bg: #E2F1F2; --progress-border: #A8D4D8;
  --pending: #7A8494;     --pending-bg: #EEF0F3;  --pending-border: #D8DCE2;
  --warning: #B45309;     --warning-bg: #FBF0E0;  --warning-border: #EBCB9A;
  --overdue: #B91C1C;     --overdue-bg: #FBE9E9;  --overdue-border: #E7B1B1;
  --critical: #7C2D92;    --critical-bg: #F3E8F6; --critical-border: #D9B6E2;
  --info: #1F3A8A;        --info-bg: #E5EAF7;     --info-border: #BFCBEC;

  --ui-font: "Inter", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  --mono-font: "Roboto Mono", "SFMono-Regular", ui-monospace, monospace;

  --radius-ctrl: 4px;
  --radius-card: 8px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--ui-font);
  font-size: 14px;
  line-height: 21px;
  color: var(--text-primary);
  background: var(--bg-app);
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; }
p { margin: 0; }
a { color: var(--indigo); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.mono { font-family: var(--mono-font); font-size: 13px; line-height: 20px; }
.num { font-family: var(--mono-font); font-variant-numeric: tabular-nums; }
.muted { color: var(--text-muted); }
.secondary-text { color: var(--text-secondary); }
.caption { font-size: 12px; line-height: 16px; color: var(--text-secondary); }
.label-caps {
  font-size: 11px; line-height: 14px; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-muted);
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ===== Icons ===== */
.icon { width: 16px; height: 16px; stroke: currentColor; stroke-width: 2;
  fill: none; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.icon-sm { width: 12px; height: 12px; }
.icon-lg { width: 20px; height: 20px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 36px; padding: 0 14px;
  font-family: inherit; font-size: 14px; font-weight: 600;
  border: 1px solid transparent; border-radius: var(--radius-ctrl);
  cursor: pointer; background: none; color: var(--text-primary);
  white-space: nowrap;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--indigo); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--indigo-700); }
.btn-secondary { background: var(--surface); border-color: var(--border-strong); color: var(--text-primary); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-sunken); }
.btn-tertiary { color: var(--teal); padding: 0 8px; }
.btn-tertiary:hover:not(:disabled) { background: var(--progress-bg); }
.btn-destructive { background: var(--surface); border-color: var(--overdue-border); color: var(--overdue); }
.btn-destructive:hover:not(:disabled) { background: var(--overdue-bg); }
.btn-sm { height: 28px; padding: 0 10px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

/* ===== Badges (state = label + icon + color, never color alone) ===== */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: var(--radius-ctrl);
  font-size: 11px; line-height: 14px; font-weight: 600;
  letter-spacing: 0.02em; border: 1px solid transparent; white-space: nowrap;
}
.badge .icon-sm { width: 12px; height: 12px; }
.badge-sealed   { color: var(--sealed);   background: var(--sealed-bg);   border-color: var(--sealed-border); }
.badge-progress { color: var(--progress); background: var(--progress-bg); border-color: var(--progress-border); }
.badge-pending  { color: var(--pending);  background: var(--pending-bg);  border-color: var(--pending-border); }
.badge-warning  { color: var(--warning);  background: var(--warning-bg);  border-color: var(--warning-border); }
.badge-overdue  { color: var(--overdue);  background: var(--overdue-bg);  border-color: var(--overdue-border); }
.badge-critical { color: var(--critical); background: var(--critical-bg); border-color: var(--critical-border); }
.badge-info     { color: var(--info);     background: var(--info-bg);     border-color: var(--info-border); }

/* Event type tags (kind) */
.tag-kind { display:inline-flex; align-items:center; gap:4px;
  padding:1px 7px; border-radius:var(--radius-ctrl); font-size:11px; font-weight:600;
  border:1px solid var(--border); background:var(--surface-sunken); color:var(--text-secondary); }

/* ===== Cards / surfaces ===== */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-card); padding: 16px;
}
.card-head { display:flex; align-items:center; justify-content:space-between;
  gap:12px; margin-bottom:12px; }
.card-head h3 { font-size:15px; line-height:22px; }

/* ===== Forms ===== */
.field { margin-bottom: 14px; }
.field label { display:block; font-size:13px; font-weight:600; margin-bottom:5px; }
.field .req { color: var(--overdue); margin-left: 2px; }
.input, .select, .textarea {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--text-primary);
  padding: 8px 10px; border: 1px solid var(--border-strong);
  border-radius: var(--radius-ctrl); background: var(--surface);
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--indigo-500); outline: 2px solid var(--focus-ring); outline-offset: 0;
}
.textarea { min-height: 72px; resize: vertical; line-height: 20px; }
.field-error { color: var(--overdue); font-size:12px; margin-top:4px; display:flex; align-items:center; gap:4px; }
.field-help { color: var(--text-muted); font-size:12px; margin-top:4px; }

/* ===== Tables ===== */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-card); background: var(--surface); }
table.data { width:100%; border-collapse: collapse; font-size: 14px; }
table.data thead th {
  position: sticky; top: 0; background: var(--surface-sunken);
  text-align: left; font-size: 11px; font-weight: 600; letter-spacing:0.04em;
  text-transform: uppercase; color: var(--text-secondary);
  padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.data tbody td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: var(--indigo-50); }
table.data td.r, table.data th.r { text-align: right; }
.cell-mono { font-family: var(--mono-font); font-size:13px; }

/* ===== App shell ===== */
.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--surface-inverse); color: #C7CDD8;
  display: flex; flex-direction: column; padding: 16px 0;
  position: sticky; top: 0; height: 100vh;
}
.brand { display:flex; align-items:center; gap:9px; padding: 0 18px 16px; color:#fff; }
.brand .logo { width:28px; height:28px; border-radius:6px; background:var(--indigo-500);
  display:flex; align-items:center; justify-content:center; color:#fff; }
.brand .name { font-weight:600; font-size:15px; }
.brand .name small { display:block; font-size:10px; font-weight:400; color:#8A93A6; letter-spacing:0.05em; }
.nav { display:flex; flex-direction:column; gap:1px; padding: 8px; }
.nav a {
  display:flex; align-items:center; gap:10px; padding: 9px 12px;
  color:#C7CDD8; border-radius: var(--radius-ctrl); font-size:14px; font-weight:500;
}
.nav a:hover { background: rgba(255,255,255,0.06); color:#fff; text-decoration:none; }
.nav a.active { background: var(--indigo-500); color:#fff; }
.nav a.disabled { color:#5A6376; cursor:default; }
.nav a.disabled:hover { background:none; color:#5A6376; }
.nav .nav-badge { margin-left:auto; }
.sidebar-foot { margin-top:auto; padding: 12px 18px 0; font-size:11px; color:#6B7488; }

.main { display:flex; flex-direction:column; min-width:0; }
.topbar {
  display:flex; align-items:center; gap:16px; padding: 0 24px;
  height: 56px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top:0; z-index: 20;
}
.topbar .ctx { display:flex; align-items:center; gap:8px; color:var(--text-secondary); font-size:13px; }
.topbar .spacer { flex:1; }
.demo-pill {
  display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:600;
  color:var(--warning); background:var(--warning-bg); border:1px solid var(--warning-border);
  padding:3px 9px; border-radius: 999px;
}
.content { padding: 24px; max-width: 1440px; width:100%; }
.page-head { margin-bottom: 20px; }
.page-head h1 { font-size:22px; line-height:30px; }
.page-head .sub { color: var(--text-secondary); margin-top:4px; font-size:13px; }

/* tab views */
.view { display:none; }
.view.active { display:block; }

/* KPI strip */
.kpi-strip { display:grid; grid-template-columns: repeat(4, 1fr); gap:12px; margin-bottom: 20px; }
.kpi { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-card); padding:14px 16px; }
.kpi .k-label { display:flex; align-items:center; gap:6px; color:var(--text-secondary); font-size:12px; font-weight:600; }
.kpi .k-value { font-family: var(--mono-font); font-size:28px; line-height:36px; font-weight:600; margin-top:6px; font-variant-numeric: tabular-nums; }
.kpi .k-sub { font-size:11px; color:var(--text-muted); margin-top:2px; }
.kpi.accent-sealed .k-value { color: var(--sealed); }

.grid-2 { display:grid; grid-template-columns: 1.4fr 1fr; gap:16px; align-items:start; }

/* feed list */
.feed { display:flex; flex-direction:column; }
.feed-item { display:flex; gap:10px; padding:10px 0; border-bottom:1px solid var(--border); }
.feed-item:last-child { border-bottom:none; }
.feed-ico { width:28px; height:28px; border-radius:6px; display:flex; align-items:center; justify-content:center; flex:none;
  background: var(--surface-sunken); color: var(--text-secondary); }
.feed-body { min-width:0; }
.feed-title { font-size:13px; font-weight:600; }
.feed-meta { font-size:11px; color:var(--text-muted); font-family: var(--mono-font); margin-top:2px; }

/* breakdown bars */
.bd-row { display:flex; align-items:center; gap:10px; padding:7px 0; }
.bd-row .bd-label { width:64px; flex:none; }
.bd-track { flex:1; height:8px; background: var(--surface-sunken); border-radius:4px; overflow:hidden; }
.bd-fill { height:100%; border-radius:4px; }
.bd-count { width:36px; text-align:right; font-family:var(--mono-font); font-size:13px; }

/* toolbar above tables */
.toolbar { display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-bottom:14px; }
.toolbar .grow { flex:1; min-width:120px; }
.search-box { position:relative; }
.search-box .icon { position:absolute; left:9px; top:50%; transform:translateY(-50%); color:var(--text-muted); }
.search-box input { padding-left: 32px; }

/* chain verify panel */
.chain-status { display:flex; align-items:center; gap:12px; padding:14px 16px; border-radius:var(--radius-card); border:1px solid var(--border); background:var(--surface-sunken); margin-bottom:16px; }
.chain-status.ok { background: var(--sealed-bg); border-color: var(--sealed-border); color: var(--sealed); }
.chain-status.bad { background: var(--overdue-bg); border-color: var(--overdue-border); color: var(--overdue); }
.chain-status .ico-wrap { width:40px; height:40px; border-radius:8px; display:flex; align-items:center; justify-content:center; background:rgba(255,255,255,0.55); }
.chain-status .cs-title { font-weight:600; font-size:15px; }
.chain-status .cs-sub { font-size:12px; }

/* skeleton */
.skel { background: linear-gradient(90deg, var(--surface-sunken) 25%, #E6E9ED 37%, var(--surface-sunken) 63%);
  background-size: 400% 100%; animation: shimmer 1.4s ease infinite; border-radius:4px; }
.skel-row { height:14px; margin:10px 12px; }
@keyframes shimmer { 0%{background-position:100% 0} 100%{background-position:-100% 0} }
@media (prefers-reduced-motion: reduce) { .skel { animation:none; } }

/* empty / error states */
.state-block { text-align:center; padding: 40px 20px; color: var(--text-secondary); }
.state-block .state-ico { width:44px; height:44px; margin:0 auto 12px; color:var(--text-muted);
  background:var(--surface-sunken); border-radius:10px; display:flex; align-items:center; justify-content:center; }
.state-block .state-title { font-weight:600; color:var(--text-primary); margin-bottom:4px; }
.state-block .state-sub { font-size:13px; margin-bottom:16px; }
.state-block.error .state-ico { color: var(--overdue); background: var(--overdue-bg); }

/* toast */
.toast-wrap { position:fixed; right:20px; bottom:20px; z-index:100; display:flex; flex-direction:column; gap:8px; }
.toast { display:flex; align-items:center; gap:10px; background:var(--surface-inverse); color:#fff;
  padding:11px 14px; border-radius:8px; box-shadow:0 8px 24px rgba(15,23,42,0.25); font-size:13px; max-width:380px; }
.toast .icon { color:#7BE0A0; }
.toast.bad .icon { color:#F2A0A0; }
.toast .t-mono { font-family:var(--mono-font); font-size:12px; color:#A9B2C2; }

/* modal */
.modal-overlay { position:fixed; inset:0; background:rgba(15,23,42,0.45); display:none;
  align-items:center; justify-content:center; z-index:60; padding:20px; }
.modal-overlay.open { display:flex; }
.modal { background:var(--surface); border-radius:var(--radius-card); width:100%; max-width:480px;
  box-shadow:0 16px 48px rgba(15,23,42,0.3); overflow:hidden; }
.modal-head { padding:16px 18px; border-bottom:1px solid var(--border); display:flex; align-items:center; gap:10px; }
.modal-head .warn-ico { width:32px; height:32px; border-radius:8px; flex:none;
  background:var(--sealed-bg); color:var(--sealed); display:flex; align-items:center; justify-content:center; }
.modal-head h3 { font-size:16px; }
.modal-body { padding:16px 18px; font-size:13px; line-height:20px; color:var(--text-secondary); }
.modal-body .irrev { background:var(--sealed-bg); border:1px solid var(--sealed-border); color:var(--sealed);
  padding:10px 12px; border-radius:var(--radius-ctrl); margin-top:12px; display:flex; gap:8px; }
.modal-foot { padding:12px 18px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:8px; }

/* drawer */
.drawer-overlay { position:fixed; inset:0; background:rgba(15,23,42,0.35); display:none; z-index:55; }
.drawer-overlay.open { display:block; }
.drawer { position:fixed; top:0; right:0; height:100vh; width:440px; max-width:92vw; background:var(--surface);
  box-shadow:-8px 0 32px rgba(15,23,42,0.18); display:flex; flex-direction:column; transform:translateX(100%); }
.drawer-overlay.open .drawer { transform:translateX(0); transition: transform .18s ease; }
@media (prefers-reduced-motion: reduce){ .drawer-overlay.open .drawer{ transition:none; } }
.drawer-head { padding:16px 18px; border-bottom:1px solid var(--border); display:flex; align-items:flex-start; justify-content:space-between; gap:12px; }
.drawer-body { padding:18px; overflow-y:auto; }
.icon-btn { background:none; border:none; cursor:pointer; color:var(--text-muted); padding:4px; border-radius:4px; }
.icon-btn:hover { background:var(--surface-sunken); color:var(--text-primary); }

.kv { display:grid; grid-template-columns: 96px 1fr; gap:8px 12px; font-size:13px; margin-bottom:16px; }
.kv dt { color:var(--text-muted); font-weight:600; font-size:12px; }
.kv dd { margin:0; word-break: break-all; }

.hash-box { background:var(--surface-sunken); border:1px solid var(--border); border-radius:var(--radius-ctrl);
  padding:8px 10px; font-family:var(--mono-font); font-size:12px; word-break:break-all; color:var(--text-secondary); }

/* info callout */
.callout { display:flex; gap:12px; padding:14px 16px; border-radius:var(--radius-card);
  background:var(--info-bg); border:1px solid var(--info-border); color:var(--indigo-700); }
.callout .icon { color:var(--indigo); margin-top:2px; }
.callout h3 { font-size:14px; margin-bottom:4px; color:var(--indigo-700); }
.callout p { font-size:13px; line-height:20px; color:#2B3F73; }
.callout code { font-family:var(--mono-font); font-size:12px; background:rgba(31,58,138,0.08); padding:1px 5px; border-radius:3px; }

.divider { height:1px; background:var(--border); margin:20px 0; border:none; }
.row-flex { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }

/* ===== Marketing (LP / pricing) ===== */
.site-header { background:var(--surface); border-bottom:1px solid var(--border); position:sticky; top:0; z-index:20; }
.site-header .wrap { max-width:1100px; margin:0 auto; padding:0 24px; height:60px; display:flex; align-items:center; gap:24px; }
.site-header .name { font-weight:600; font-size:16px; display:flex; align-items:center; gap:9px; }
.site-header nav { margin-left:auto; display:flex; gap:20px; align-items:center; font-size:14px; }
.site-header nav a { color:var(--text-secondary); font-weight:500; }
.site-header nav a:hover { color:var(--text-primary); text-decoration:none; }
.wrap { max-width:1100px; margin:0 auto; padding:0 24px; }
.section { padding: 56px 0; }
.hero { padding: 64px 0 48px; }
.hero h1 { font-size:34px; line-height:44px; max-width:680px; letter-spacing:-0.01em; }
.hero .tagline { font-size:17px; color:var(--text-secondary); margin-top:16px; max-width:620px; line-height:26px; }
.hero .cta-row { margin-top:28px; display:flex; gap:12px; flex-wrap:wrap; }
.hero .note { margin-top:14px; font-size:12px; color:var(--text-muted); }
.eyebrow { color:var(--teal); font-weight:600; font-size:12px; letter-spacing:0.06em; text-transform:uppercase; }
.feature-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:20px; margin-top:32px; }
.feature { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-card); padding:20px; }
.feature .f-ico { width:36px; height:36px; border-radius:8px; background:var(--indigo-50); color:var(--indigo);
  display:flex; align-items:center; justify-content:center; margin-bottom:12px; }
.feature h3 { font-size:15px; margin-bottom:6px; }
.feature p { font-size:13px; line-height:20px; color:var(--text-secondary); }
.section h2 { font-size:26px; line-height:34px; margin-bottom:10px; }
.section .lead { color:var(--text-secondary); max-width:640px; line-height:24px; }
.bg-sunken { background:var(--surface-sunken); }
.steps { display:grid; grid-template-columns: repeat(4,1fr); gap:16px; margin-top:28px; }
.step { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-card); padding:18px; }
.step .num { font-family:var(--mono-font); color:var(--teal); font-weight:600; font-size:13px; }
.step h3 { font-size:14px; margin:8px 0 5px; }
.step p { font-size:12px; line-height:18px; color:var(--text-secondary); }

.price-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:20px; margin-top:36px; align-items:start; }
.price-card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-card); padding:24px; display:flex; flex-direction:column; }
.price-card.featured { border-color:var(--indigo); box-shadow:0 0 0 1px var(--indigo); }
.price-card .plan-name { font-size:15px; font-weight:600; }
.price-card .feat-pill { font-size:11px; font-weight:600; color:var(--indigo); background:var(--indigo-50); padding:2px 8px; border-radius:999px; margin-left:8px; }
.price-card .amount { font-family:var(--mono-font); font-size:32px; font-weight:600; margin:14px 0 2px; }
.price-card .amount small { font-size:13px; color:var(--text-muted); font-family:var(--ui-font); font-weight:400; }
.price-card .est { font-size:11px; color:var(--warning); margin-bottom:14px; }
.price-card ul { list-style:none; padding:0; margin:0 0 20px; display:flex; flex-direction:column; gap:9px; }
.price-card li { display:flex; gap:8px; font-size:13px; line-height:19px; color:var(--text-secondary); }
.price-card li .icon { color:var(--sealed); margin-top:2px; flex:none; }
.price-card .btn { margin-top:auto; }
.footer { border-top:1px solid var(--border); padding:32px 0; color:var(--text-muted); font-size:12px; }
.footer .wrap { display:flex; gap:16px; flex-wrap:wrap; justify-content:space-between; }

.pricing-note { background:var(--warning-bg); border:1px solid var(--warning-border); color:var(--warning);
  border-radius:var(--radius-card); padding:14px 16px; font-size:13px; line-height:20px; margin-top:28px; display:flex; gap:10px; }

.beta-banner { display:flex; gap:12px; align-items:flex-start; background:var(--sealed-bg); border:1px solid var(--sealed-border);
  color:var(--sealed); border-radius:var(--radius-card); padding:14px 16px; font-size:13px; line-height:20px; margin:18px 0 20px; }
.beta-banner .icon { color:var(--sealed); flex:none; margin-top:1px; }
.beta-banner strong { color:var(--sealed); }
.beta-pill { font-size:11px; font-weight:600; color:var(--sealed); background:var(--sealed-bg);
  border:1px solid var(--sealed-border); padding:2px 8px; border-radius:999px; margin-left:8px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position:static; height:auto; flex-direction:row; flex-wrap:wrap; align-items:center; padding:10px 12px; }
  .brand { padding:0 12px 0 4px; }
  .nav { flex-direction:row; flex-wrap:wrap; padding:4px; gap:2px; }
  .nav a { padding:7px 10px; }
  .nav a span.lbl { display:none; }
  .nav a.active span.lbl, .sidebar-foot { display:none; }
  .kpi-strip { grid-template-columns: repeat(2,1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .feature-grid, .price-grid, .steps { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .kpi-strip { grid-template-columns: 1fr; }
  .hero h1 { font-size:27px; line-height:36px; }
  .content { padding:16px; }
  .drawer { width:100%; }
}