:root {
  --font-sans: 'Noto Sans JP', system-ui, sans-serif;
  --font-display: 'Bricolage Grotesque', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --color-bg: #f5f7fa;
  --color-bg-card: #ffffff;
  --color-bg-subtle: #eef1f5;
  --color-bg-hover: #e8ecf2;
  --color-border: #e3e8ee;
  --color-border-strong: #c9d1db;
  --color-text: #1d2733;
  --color-text-muted: #5a6878;
  --color-text-subtle: #5e6a78;

  --color-accent: #0fa9b8;
  --color-accent-hover: #0e8c98;
  --color-accent-text: #086570;
  --color-accent-soft: #e0f4f6;
  --color-accent-subtle: #f0fafb;
  --color-accent-deep: #0a6b75;

  --color-line: #06c755;
  --color-line-soft: #e6f7ec;
  --color-line-text: #027c39;

  --color-success: #1e7c3a;
  --color-success-soft: #e8f4ec;
  --color-info: #1e6e94;
  --color-info-soft: #e6f0f6;
  --color-danger: #c43030;
  --color-danger-soft: #fbeaea;
  --color-warning: #9c5a0d;
  --color-warning-soft: #fdf3e0;
  --color-warning-bg: #fef9e9;
  --color-warning-border: #f5e3a5;

  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-8: 32px; --sp-10: 40px; --sp-12: 48px;

  --fs-xs: 11px; --fs-sm: 12px; --fs-base: 13px; --fs-md: 14px;
  --fs-lg: 16px; --fs-xl: 18px; --fs-2xl: 22px; --fs-3xl: 28px; --fs-4xl: 36px;

  --r-sm: 4px; --r-md: 6px; --r-lg: 8px; --r-xl: 10px; --r-2xl: 14px;
}

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

html, body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body { min-height: 100vh; }
.tabular { font-variant-numeric: tabular-nums; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ===== Layout: Sidebar + Main ===== */
.app {
  display: grid;
  grid-template-columns: 232px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--color-bg-card);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar-brand {
  padding: 20px 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-bottom: 1px solid var(--color-border);
}
.sidebar-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--color-accent-deep);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0;
}
.sidebar-tagline {
  font-size: 11px;
  color: var(--color-text-subtle);
  letter-spacing: 0.04em;
  padding-left: 34px;
}

.sidebar-nav {
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  overflow-y: auto;
}
.sidebar-section {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  padding: 16px 10px 6px;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background 150ms ease, color 150ms ease;
  min-height: 36px;
}
.sidebar-link svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}
.sidebar-link:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.sidebar-link.active {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-weight: 600;
}
.sidebar-link .badge {
  margin-left: auto;
  font-size: 10px;
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  padding: 2px 7px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}
.sidebar-link.active .badge {
  background: var(--color-accent-deep);
  color: white;
}

.sidebar-foot {
  padding: 14px 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-foot-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}
.sidebar-foot-meta { line-height: 1.3; min-width: 0; }
.sidebar-foot-name { font-size: 13px; font-weight: 600; }
.sidebar-foot-org { font-size: 11px; color: var(--color-text-subtle); }

/* ===== Main ===== */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-header {
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.page-title-wrap { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.page-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-text);
}
.page-desc {
  font-size: 13px;
  color: var(--color-text-subtle);
}
.page-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.page-actions .search .input { min-width: 0; }
@media (max-width: 560px) {
  .page-actions .search { width: 100%; }
  .page-actions .search .input { width: 100%; min-width: 0; }
}

.content {
  padding: 28px 32px 64px;
  max-width: 1440px;
  width: 100%;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--r-lg);
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  min-height: 38px;
  transition: all 180ms ease-out;
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; }
.btn-primary {
  background: var(--color-accent-deep);
  color: white;
}
.btn-primary:hover { background: #084a52; }
.btn-primary:active { transform: scale(0.985); }
.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn-secondary:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-text-muted);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}
.btn-ghost:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.btn-danger {
  background: var(--color-bg-card);
  color: var(--color-danger);
  border-color: var(--color-danger-soft);
}
.btn-danger:hover {
  background: var(--color-danger-soft);
}
.btn-sm { padding: 5px 10px; min-height: 30px; font-size: 12px; }
.btn-icon { padding: 0; width: 38px; height: 38px; }
.btn-icon.btn-sm { width: 30px; height: 30px; }
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== Pill Tabs ===== */
.pill-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--color-bg-subtle);
  border-radius: 999px;
  border: 1px solid var(--color-border);
}
.pill-tab {
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 160ms ease-out;
  min-height: 32px;
}
.pill-tab:hover { color: var(--color-text); }
.pill-tab.active {
  background: var(--color-bg-card);
  color: var(--color-accent-deep);
  border-color: var(--color-accent);
  font-weight: 600;
}
.pill-tab .cnt {
  font-size: 10px;
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  padding: 1px 7px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--color-border);
}
.pill-tab.active .cnt {
  background: var(--color-accent-deep);
  color: white;
  border-color: var(--color-accent-deep);
}

/* ===== Card ===== */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-xl);
  overflow: hidden;
}
.card-body { padding: 20px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
/* card-body 直置きテーブル (padding:4px 8px 8px等で個別調整される) */
.card-body table.tbl { min-width: 600px; }
.card-head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-title::before {
  content: '';
  width: 3px;
  height: 14px;
  background: var(--color-accent);
  border-radius: 999px;
}
.card-body { padding: 20px; }
.card-foot {
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ===== KPI Grid ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 1100px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .kpi-grid { grid-template-columns: 1fr; } }
.kpi {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-xl);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
}
.kpi-label {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}
.kpi-label svg { width: 14px; height: 14px; color: var(--color-accent-text); }
.kpi-value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.kpi-unit {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-left: 4px;
}
.kpi-sub {
  font-size: 11px;
  color: var(--color-text-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
  font-variant-numeric: tabular-nums;
}
.kpi-delta {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.kpi-delta.up { background: var(--color-success-soft); color: var(--color-success); }
.kpi-delta.down { background: var(--color-danger-soft); color: var(--color-danger); }
.kpi-delta.flat { background: var(--color-bg-subtle); color: var(--color-text-muted); }

/* ===== Table ===== */
.table-wrap {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-xl);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}
table.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 720px;
}
.card-body > table.tbl { min-width: 600px; }
table.tbl th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  padding: 12px 16px;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
table.tbl td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
table.tbl tr:last-child td { border-bottom: none; }
table.tbl tr:hover td { background: var(--color-bg-subtle); }
table.tbl tr.row-link { cursor: pointer; }
table.tbl .col-num { font-variant-numeric: tabular-nums; text-align: right; }
table.tbl .col-actions { text-align: right; }

/* ===== Pills / Badges ===== */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.pill-line { background: var(--color-line-soft); color: var(--color-line-text); }
.pill-on { background: var(--color-success-soft); color: var(--color-success); font-weight: 600; }
.pill-off { background: var(--color-bg-subtle); color: var(--color-text-subtle); }
.pill-draft { background: var(--color-warning-soft); color: var(--color-warning); }
.pill-err { background: var(--color-danger-soft); color: var(--color-danger); }
.pill-accent { background: var(--color-accent-soft); color: var(--color-accent-deep); }
.pill-dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.pill.lg { padding: 4px 12px; font-size: 12px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  background: var(--color-accent-subtle);
  color: var(--color-accent-deep);
  border: 1px solid var(--color-accent-soft);
}

/* ===== Avatar ===== */
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}
.avatar.sm { width: 26px; height: 26px; font-size: 11px; }
.avatar.lg { width: 56px; height: 56px; font-size: 20px; }
.user-cell { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.user-name { font-weight: 500; }
.user-id { font-size: 11px; color: var(--color-text-subtle); font-family: var(--font-mono); }

/* ===== Form ===== */
.field { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 12px; font-weight: 600; color: var(--color-text); }
.label-sub { font-size: 11px; color: var(--color-text-subtle); font-weight: 400; margin-left: 4px; }
.input, .select, .textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--r-lg);
  font-family: inherit;
  font-size: 13px;
  background: var(--color-bg-card);
  color: var(--color-text);
  transition: border-color 160ms, box-shadow 160ms;
  min-height: 40px;
}
.textarea { min-height: 120px; resize: vertical; line-height: 1.6; }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.input::placeholder, .textarea::placeholder { color: var(--color-text-subtle); }
.select { appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6878' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }

.search {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.search svg {
  position: absolute;
  left: 12px;
  width: 15px;
  height: 15px;
  color: var(--color-text-subtle);
  pointer-events: none;
}
.search .input { padding-left: 36px; min-width: 280px; }

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar-right { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }

.checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}
.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--color-border-strong);
  border-radius: 999px;
  transition: background 200ms;
}
.switch-slider::before {
  content: '';
  position: absolute;
  height: 14px; width: 14px;
  left: 3px; top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform 200ms;
}
.switch input:checked + .switch-slider { background: var(--color-accent); }
.switch input:checked + .switch-slider::before { transform: translateX(16px); }

/* ===== Grid helpers ===== */
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.col { flex: 1; min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.split-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.split-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.split-3-2 { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 16px; }
.split-2-3 { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 16px; }
@media (max-width: 960px) {
  .split-2, .split-3, .split-3-2, .split-2-3 { grid-template-columns: minmax(0, 1fr); }
}

/* ===== Chart (simple SVG) ===== */
.chart {
  position: relative;
  width: 100%;
  height: 220px;
}
.chart svg { width: 100%; height: 100%; display: block; }
.chart-grid line { stroke: var(--color-border); stroke-width: 1; }
.chart-axis text {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--color-text-subtle);
}
.chart-line {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.chart-fill { fill: var(--color-accent-soft); opacity: 0.7; }
.chart-dot { fill: var(--color-accent); }

.bar {
  height: 8px;
  background: var(--color-bg-subtle);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.bar-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 999px;
}
.bar-fill.success { background: var(--color-success); }
.bar-fill.warning { background: var(--color-warning); }
.bar-fill.danger { background: var(--color-danger); }

/* ===== Scenario Editor ===== */
.editor {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr) 360px;
  gap: 16px;
}
@media (max-width: 1200px) { .editor { grid-template-columns: minmax(0, 1fr); } }

.step-list { display: flex; flex-direction: column; gap: 8px; }
.step {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: border-color 160ms, background 160ms;
  position: relative;
}
.step:hover { border-color: var(--color-border-strong); }
.step.active {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}
.step.active::before {
  content: '';
  position: absolute;
  left: -1px; top: 8px; bottom: 8px;
  width: 3px;
  background: var(--color-accent);
  border-radius: 999px;
}
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}
.step.active .step-num { background: var(--color-accent-deep); color: white; }
.step-info { flex: 1; min-width: 0; }
.step-title {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.step-meta {
  font-size: 11px;
  color: var(--color-text-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}
.step-handle {
  color: var(--color-text-subtle);
  flex-shrink: 0;
  cursor: grab;
}
.step-connector {
  height: 14px;
  margin-left: 27px;
  border-left: 2px dashed var(--color-border-strong);
}

.preview {
  background: linear-gradient(180deg, #cfe4f3 0%, #b0d4e7 100%);
  border-radius: var(--r-xl);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 460px;
}
.bubble {
  background: white;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.65;
  max-width: 80%;
  white-space: pre-wrap;
  word-break: break-word;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.bubble-meta {
  font-size: 10px;
  color: rgba(29,39,51,0.55);
  align-self: flex-start;
  padding-left: 4px;
  font-variant-numeric: tabular-nums;
}
.bubble-image {
  background: white;
  border-radius: 12px;
  padding: 4px;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.bubble-image .ph {
  width: 220px;
  height: 130px;
  background: linear-gradient(135deg, #e9eef3, #d6dde6);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-subtle);
  font-size: 11px;
}

/* ===== Friend Detail ===== */
.detail-grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 16px;
}
.detail-grid.settings-grid { grid-template-columns: 220px minmax(0, 1fr); }
@media (max-width: 1000px) {
  .detail-grid { grid-template-columns: minmax(0, 1fr); }
  .detail-grid.settings-grid { grid-template-columns: minmax(0, 1fr); }
  .detail-grid.settings-grid .settings-nav { position: static; padding: 10px 12px; }
}

/* ===== Timeline ===== */
.timeline { display: flex; flex-direction: column; }
.t-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}
.t-item:last-child { border-bottom: none; }
.t-time { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-subtle); padding-top: 2px; }
.t-body { font-size: 13px; line-height: 1.6; }
.t-body strong { font-weight: 600; }
.t-body .ev { font-size: 11px; color: var(--color-text-subtle); }

/* ===== Empty State ===== */
.empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.empty-mark {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-bg-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

/* ===== Mobile (W6: 375px) ===== */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    inset: 0 30% 0 0;
    height: 100vh;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 200ms ease-out;
  }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(20, 28, 40, 0.45);
    z-index: 40;
  }
  .main { min-width: 0; }
  .page-header { padding: 14px 16px; }
  .content { padding: 18px 16px 56px; }
  .page-title { font-size: 19px; }
  .topbar-mobile { display: flex !important; }
}
@media (max-width: 560px) {
  .page-header { gap: 10px; }
  .kpi-value { font-size: 26px; }
  .kpi { padding: 14px 16px; }
}
.topbar-mobile {
  display: none;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 16px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 30;
}
.menu-btn {
  width: 38px; height: 38px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.menu-btn span {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}
.topbar-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.02em;
}

/* ===== Misc ===== */
.muted { color: var(--color-text-muted); }
.subtle { color: var(--color-text-subtle); }
.right { text-align: right; }
.center { text-align: center; }
.flex { display: flex; }
.field .flex, .flex.flex-wrap { flex-wrap: wrap; }
.between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-6 { gap: 6px; } .gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; } .mb-12 { margin-bottom: 12px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.fs-xs { font-size: 11px; } .fs-sm { font-size: 12px; } .fs-md { font-size: 14px; } .fs-lg { font-size: 16px; }
.font-mono { font-family: var(--font-mono); }
.font-display { font-family: var(--font-display); }
.fw-700 { font-weight: 700; } .fw-600 { font-weight: 600; }
.divider { height: 1px; background: var(--color-border); margin: 16px 0; }
.dot-sep { color: var(--color-text-subtle); }

/* ===== Avatar color variants (CSS変数化) ===== */
.avatar[data-color="warm"]   { background: var(--color-warning-soft); color: var(--color-warning); }
.avatar[data-color="green"]  { background: var(--color-success-soft); color: var(--color-success); }
.avatar[data-color="info"]   { background: var(--color-info-soft);    color: var(--color-info); }
.avatar[data-color="danger"] { background: var(--color-danger-soft);  color: var(--color-danger); }
.avatar[data-color="accent"] { background: var(--color-accent-soft);  color: var(--color-accent-text); }

/* ===== Alert ===== */
.alert {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-radius: var(--r-lg);
  border: 1px solid;
  line-height: 1.6;
}
.alert-warn { background: var(--color-warning-bg); border-color: var(--color-warning-border); color: var(--color-text); }
.alert-warn .alert-icon { color: var(--color-warning); flex-shrink: 0; width: 18px; height: 18px; }

/* ===== KPI 主従 (1.6fr + 3均等) ===== */
.kpi-grid.lead {
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
}
.kpi.lead .kpi-value { font-size: 42px; }
@media (max-width: 1100px) {
  .kpi-grid.lead { grid-template-columns: 1fr 1fr; }
  .kpi.lead .kpi-value { font-size: 32px; }
}

/* ===== Plan grid (料金プラン主従) ===== */
.plan-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 900px) { .plan-grid { grid-template-columns: minmax(0, 1fr); } }
.plan-card {
  padding: 20px 22px;
  border-radius: var(--r-xl);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.plan-card.current {
  border: 2px solid var(--color-accent);
  background: var(--color-accent-subtle);
  position: relative;
  padding: 19px 21px;
}
.plan-card.recommended { position: relative; }
.plan-card.recommended::before {
  content: 'おすすめ';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent-deep);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  font-family: var(--font-display);
}
.plan-name {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}
.plan-card.current .plan-name { color: var(--color-accent-deep); }
.plan-price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.plan-price .unit {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-left: 2px;
}
.plan-feat {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.plan-card .btn { margin-top: auto; }

/* ===== Input group (suffix付き) ===== */
.input-group { display: flex; }
.input-group .input:first-child { border-top-right-radius: 0; border-bottom-right-radius: 0; }
.input-group .suffix {
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-strong);
  border-left: none;
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  font-size: 13px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ===== Code block (ライト基調) ===== */
.code-block {
  background: #f7f9fc;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  padding: 14px 16px;
  border-radius: var(--r-lg);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.code-block .ck { color: var(--color-info); }
.code-block .cs { color: var(--color-success); }
.code-block .cn { color: var(--color-danger); }
.code-block .cp { color: var(--color-text-subtle); }

/* ===== Settings sub-nav (sidebar-linkと別系統) ===== */
.settings-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background 150ms ease, color 150ms ease;
  border-left: 2px solid transparent;
}
.settings-link:hover { background: var(--color-bg-subtle); color: var(--color-text); }
.settings-link.active {
  color: var(--color-accent-deep);
  background: var(--color-accent-subtle);
  border-left-color: var(--color-accent);
  font-weight: 600;
}