/* ============================================
   VFM Platform - Shared Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;700;900&family=Noto+Sans+JP:wght@300;400;500;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color tokens — refined editorial / financial */
  --ink:        #0e1318;        /* primary text, near-black */
  --ink-2:      #2a313a;        /* secondary text */
  --ink-3:      #5b6470;        /* tertiary text */
  --ink-4:      #8a929c;        /* muted */
  --line:       #d8dde3;        /* hairlines */
  --line-2:     #ebeef2;        /* subtle dividers */
  --paper:      #f5f3ee;        /* warm off-white background */
  --paper-2:    #faf8f3;        /* lighter paper */
  --card:       #ffffff;
  --accent:     #b91c1c;        /* japan red, used very sparingly */
  --accent-2:   #7a1010;
  --positive:   #15803d;        /* green — VFM positive */
  --negative:   #b91c1c;        /* red — VFM negative */
  --gold:       #a07c2c;        /* highlight */
  --shadow:     0 1px 2px rgba(14,19,24,.04), 0 4px 12px rgba(14,19,24,.04);

  /* Type */
  --font-serif: 'Noto Serif JP', 'Times New Roman', serif;
  --font-sans:  'Noto Sans JP', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;
}

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

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'palt';
}

a { color: inherit; text-decoration: none; }

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

/* Sidebar */
.sidebar {
  background: var(--ink);
  color: #c8cdd4;
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.brand {
  padding: 0 24px 28px;
  border-bottom: 1px solid #1d242c;
  margin-bottom: 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.brand-mark .seal {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: -0.5px;
}

.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  letter-spacing: 0.5px;
}

.brand-sub {
  font-size: 10px;
  color: #6b727b;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-section {
  padding: 16px 24px 6px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 2px;
  color: #6b727b;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 24px;
  color: #c8cdd4;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s ease;
  border-left: 2px solid transparent;
}

.nav-item:hover {
  background: #1d242c;
  color: #fff;
}

.nav-item.active {
  background: #1d242c;
  color: #fff;
  border-left-color: var(--accent);
}

.nav-item .icon {
  width: 16px;
  height: 16px;
  opacity: .7;
}

.nav-item.active .icon {
  opacity: 1;
}

/* Submenu (2-level nav) */
.nav-group {
  border: none;
}
.nav-group > summary {
  list-style: none;
  cursor: pointer;
}
.nav-group > summary::-webkit-details-marker {
  display: none;
}
.nav-arrow {
  margin-left: auto;
  font-size: 10px;
  opacity: 0.45;
  transition: transform .2s ease;
  flex-shrink: 0;
}
.nav-group[open] .nav-arrow {
  transform: rotate(180deg);
}
.nav-sub {
  margin: 2px 12px 6px 20px;
  border-left: 2px solid var(--accent);
  border-radius: 0 4px 4px 0;
  background: rgba(0, 0, 0, .18);
  overflow: hidden;
}
.nav-sub-item {
  display: block;
  padding: 7px 12px;
  font-size: 11.5px;
  color: #8a9299;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .15s, background .15s;
}
.nav-sub-item:hover:not(.disabled) {
  color: #fff;
  background: rgba(255, 255, 255, .05);
}
.nav-sub-item.active {
  color: #fff;
}
.nav-sub-item.disabled {
  opacity: .35;
  cursor: not-allowed;
  pointer-events: none;
}

.sidebar-foot {
  margin-top: auto;
  padding: 16px 24px;
  border-top: 1px solid #1d242c;
  font-size: 11px;
  color: #6b727b;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #c8cdd4;
  margin-bottom: 8px;
}

.user-chip .avatar {
  width: 28px;
  height: 28px;
  background: #2a3441;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 600;
  border-radius: 2px;
}

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

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.breadcrumb {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.3px;
}

.breadcrumb span {
  margin: 0 8px;
  color: var(--ink-4);
}

.breadcrumb b {
  color: var(--ink);
  font-weight: 500;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 280px;
  padding: 7px 12px 7px 32px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  font-family: inherit;
  font-size: 12px;
  outline: none;
  transition: border-color .15s;
}

.search-box input:focus {
  border-color: var(--ink-3);
}

.search-box::before {
  content: '⌕';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-4);
  font-size: 14px;
}

.content {
  padding: 32px;
  max-width: 1400px;
  width: 100%;
}

/* ============================================
   Page header
   ============================================ */
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--ink);
}

.page-eyebrow {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--ink-4);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.page-meta {
  font-size: 12px;
  color: var(--ink-3);
  text-align: right;
}

.page-meta strong {
  color: var(--ink);
  font-weight: 500;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  transition: all .15s;
}

.btn:hover {
  background: var(--ink-2);
  border-color: var(--ink-2);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  background: var(--paper-2);
  border-color: var(--ink-3);
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
}

.btn-accent:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.btn-sm {
  padding: 5px 11px;
  font-size: 11px;
}

/* ============================================
   Card
   ============================================ */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 24px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.card-eyebrow {
  font-size: 10px;
  color: var(--ink-4);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* ============================================
   Tables — financial precision
   ============================================ */
.fin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.fin-table th,
.fin-table td {
  padding: 8px 10px;
  text-align: right;
  border-bottom: 1px solid var(--line-2);
  font-weight: 400;
  white-space: nowrap;
}

.fin-table th {
  background: var(--paper-2);
  color: var(--ink-3);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.3px;
  border-bottom: 1px solid var(--line);
  text-align: right;
}

.fin-table th:first-child,
.fin-table td:first-child {
  text-align: left;
  color: var(--ink-2);
}

.fin-table tr:hover td {
  background: rgba(245, 243, 238, .5);
}

.fin-table .num {
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.fin-table .total td {
  border-top: 1px solid var(--ink-3);
  border-bottom: 2px double var(--ink-3);
  font-weight: 600;
  color: var(--ink);
  background: var(--paper-2);
}

.fin-table .section td {
  background: var(--ink);
  color: #fff;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.5px;
  padding: 6px 10px;
}

.fin-table .indent {
  padding-left: 24px;
  color: var(--ink-3);
}

.fin-table .indent-2 {
  padding-left: 40px;
  color: var(--ink-3);
}

.neg { color: var(--negative); }
.pos { color: var(--positive); }
.muted { color: var(--ink-4); }

/* ============================================
   Tags / Pills / Status
   ============================================ */
.tag {
  display: inline-block;
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.5px;
  border: 1px solid var(--line);
  background: var(--paper-2);
  color: var(--ink-2);
  text-transform: uppercase;
}

.tag-ink {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.tag-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.tag-positive {
  background: #ecfdf3;
  color: var(--positive);
  border-color: #a7e0bf;
}

.tag-negative {
  background: #fef2f2;
  color: var(--negative);
  border-color: #f5c7c7;
}

.tag-gold {
  background: #faf3e0;
  color: var(--gold);
  border-color: #e0d0a0;
}

/* ============================================
   Form
   ============================================ */
.form-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-2);
  align-items: center;
}

.form-row:last-child { border-bottom: none; }

.form-label {
  font-size: 12px;
  color: var(--ink-2);
  font-weight: 500;
}

.form-label small {
  display: block;
  font-weight: 400;
  color: var(--ink-4);
  font-size: 11px;
  margin-top: 2px;
}

.form-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

input[type="text"],
input[type="number"],
select,
textarea {
  padding: 7px 10px;
  border: 1px solid var(--line);
  background: var(--card);
  font-family: inherit;
  font-size: 13px;
  color: var(--ink);
  outline: none;
  transition: border-color .15s;
  font-variant-numeric: tabular-nums;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--ink-3);
}

input[type="number"] {
  font-family: var(--font-mono);
  text-align: right;
  width: 120px;
}

.unit {
  font-size: 11px;
  color: var(--ink-3);
}

.hint {
  font-size: 11px;
  color: var(--ink-4);
  margin-left: 8px;
}

.hint-src {
  font-size: 10px;
  color: var(--gold);
  letter-spacing: 0.3px;
}

/* radio chips */
.radio-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--line);
}

.radio-group label {
  padding: 7px 14px;
  font-size: 12px;
  cursor: pointer;
  background: var(--card);
  color: var(--ink-3);
  border-right: 1px solid var(--line);
  transition: all .15s;
}

.radio-group label:last-child { border-right: none; }

.radio-group input { display: none; }

.radio-group input:checked + label,
.radio-group label.checked {
  background: var(--ink);
  color: #fff;
}

/* ============================================
   Stat blocks (KPIs)
   ============================================ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.stat {
  background: var(--card);
  padding: 18px 20px;
}

.stat-label {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--ink-4);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-value .unit-s {
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-3);
  margin-left: 4px;
}

.stat-delta {
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 6px;
  font-family: var(--font-mono);
}

/* ============================================
   Big VFM result block
   ============================================ */
.vfm-hero {
  background: var(--ink);
  color: #fff;
  padding: 40px 48px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.vfm-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg,
      transparent, transparent 20px,
      rgba(255,255,255,.015) 20px, rgba(255,255,255,.015) 21px);
  pointer-events: none;
}

.vfm-hero-eyebrow {
  font-size: 10px;
  letter-spacing: 4px;
  color: #6b727b;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.vfm-hero-value {
  font-family: var(--font-serif);
  font-size: 88px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -2px;
  font-variant-numeric: tabular-nums;
}

.vfm-hero-value.negative { color: #ff6b6b; }
.vfm-hero-value.positive { color: #6ee7a3; }

.vfm-hero-sub {
  font-size: 13px;
  color: #c8cdd4;
  margin-top: 14px;
  max-width: 540px;
  line-height: 1.6;
}

.vfm-hero-cols {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 64px;
  align-items: end;
}

.vfm-hero-meta {
  text-align: right;
  font-size: 11px;
  color: #8a929c;
  letter-spacing: 0.5px;
}

.vfm-hero-meta div {
  margin-bottom: 4px;
}

.vfm-hero-meta strong {
  color: #fff;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* ============================================
   Bars
   ============================================ */
.compare-bar {
  display: grid;
  grid-template-columns: 100px 1fr 130px;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-2);
}

.compare-bar-label {
  font-size: 12px;
  font-weight: 500;
}

.compare-bar-track {
  height: 18px;
  background: var(--paper-2);
  position: relative;
}

.compare-bar-fill {
  height: 100%;
  background: var(--ink);
  position: relative;
}

.compare-bar-fill.psc { background: #8a929c; }
.compare-bar-fill.bto { background: var(--accent); }
.compare-bar-fill.dbo { background: #2a313a; }

.compare-bar-val {
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.tab {
  padding: 11px 22px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all .15s;
  letter-spacing: 0.3px;
}

.tab:hover { color: var(--ink); }

.tab.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ============================================
   Project list
   ============================================ */
.project-row {
  display: grid;
  grid-template-columns: 70px 2fr 1fr 1fr 110px 110px 90px;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line-2);
  background: var(--card);
  cursor: pointer;
  transition: background .15s;
  font-size: 13px;
}

.project-row:hover {
  background: var(--paper-2);
}

.project-row.head {
  background: var(--paper-2);
  font-size: 10px;
  color: var(--ink-4);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: default;
  font-weight: 500;
}

.project-row.head:hover {
  background: var(--paper-2);
}

.project-code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}

.project-name {
  font-weight: 500;
  color: var(--ink);
}

.project-name small {
  display: block;
  font-weight: 400;
  font-size: 11px;
  color: var(--ink-4);
  margin-top: 2px;
}

.vfm-pill {
  font-family: var(--font-mono);
  font-weight: 600;
  text-align: right;
}

.vfm-pill.pos { color: var(--positive); }
.vfm-pill.neg { color: var(--negative); }

/* ============================================
   Wizard / steps
   ============================================ */
.stepper {
  display: flex;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  margin-bottom: 24px;
}

.step {
  flex: 1;
  padding: 14px 20px;
  border-right: 1px solid var(--line-2);
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
}

.step:last-child { border-right: none; }

.step-num {
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--ink-3);
  flex-shrink: 0;
}

.step.done .step-num {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.step.current .step-num {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.step-info {
  min-width: 0;
}

.step-eyebrow {
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--ink-4);
  text-transform: uppercase;
}

.step-name {
  font-size: 12px;
  color: var(--ink-3);
  font-weight: 500;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.step.current .step-name { color: var(--ink); }
.step.done .step-name { color: var(--ink-2); }

/* ============================================
   Detail rows (param master)
   ============================================ */
.param-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.param-table th {
  text-align: left;
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ink-4);
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}

.param-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-2);
  vertical-align: top;
}

.param-table tr:hover td {
  background: var(--paper-2);
}

.param-name {
  font-weight: 500;
  color: var(--ink);
}

.param-name small {
  display: block;
  font-size: 11px;
  color: var(--ink-4);
  font-weight: 400;
  margin-top: 2px;
}

.param-value {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.param-source {
  font-size: 11px;
  color: var(--ink-3);
}

.param-source a {
  color: var(--gold);
  border-bottom: 1px dashed var(--gold);
}

/* ============================================
   Misc utilities
   ============================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.flex { display: flex; align-items: center; gap: 12px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.divider {
  height: 1px;
  background: var(--line);
  margin: 24px 0;
}

.callout {
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.6;
}

.callout strong {
  color: var(--ink);
}

/* SVG helpers */
.icon {
  width: 14px;
  height: 14px;
  display: inline-block;
  vertical-align: middle;
}

/* Subtle entrance animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.content > * {
  animation: fadeUp .4s ease-out backwards;
}

.content > *:nth-child(1) { animation-delay: 0s; }
.content > *:nth-child(2) { animation-delay: .05s; }
.content > *:nth-child(3) { animation-delay: .1s; }
.content > *:nth-child(4) { animation-delay: .15s; }
.content > *:nth-child(5) { animation-delay: .2s; }
.content > *:nth-child(6) { animation-delay: .25s; }

/* Range slider */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 2px;
  background: var(--line);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--accent);
  cursor: pointer;
  border-radius: 50%;
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--accent);
  cursor: pointer;
  border: none;
  border-radius: 50%;
}