:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --ink: #17202a;
  --muted: #667085;
  --line: #d9e0ea;
  --line-soft: #edf1f6;
  --nav: #101828;
  --nav-2: #182230;
  --blue: #175cd3;
  --blue-soft: #eff6ff;
  --green: #067647;
  --green-soft: #ecfdf3;
  --amber: #b54708;
  --amber-soft: #fffaeb;
  --red: #b42318;
  --red-soft: #fef3f2;
  --shadow: 0 14px 34px rgba(16, 24, 40, .08);
  --radius: 14px;
  --ease: cubic-bezier(.22,1,.36,1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
}

a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, p { margin-top: 0; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.auth-card {
  width: min(480px, 100%);
  padding: 30px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px;
  background: linear-gradient(180deg, var(--nav) 0%, var(--nav-2) 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand-mark {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,.12);
  display: grid;
  gap: 5px;
}

.brand-mark strong {
  font-size: 1.1rem;
  letter-spacing: 0;
}

.brand-mark span {
  color: rgba(255,255,255,.62);
  font-size: .78rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.nav-stack {
  display: grid;
  gap: 6px;
}

.nav-stack a {
  min-height: 52px;
  padding: 9px 12px;
  border-radius: 10px;
  display: grid;
  gap: 2px;
  color: rgba(255,255,255,.74);
  transition: background .2s var(--ease), color .2s var(--ease);
}

.nav-stack a:hover,
.nav-stack a.is-active {
  background: rgba(255,255,255,.10);
  color: #fff;
}

.nav-stack span {
  font-size: .94rem;
  font-weight: 800;
}

.nav-stack small {
  color: rgba(255,255,255,.50);
  font-size: .74rem;
}

.sidebar-footer {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.main {
  padding: 22px;
  display: grid;
  gap: 16px;
  align-content: start;
}

.topbar,
.panel,
.metric,
.sync-panel,
.material-row,
.category-pill {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}

.topbar {
  min-height: 112px;
  padding: 22px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.system-label {
  display: inline-flex;
  margin-bottom: 7px;
  color: var(--blue);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .08em;
}

h1 {
  margin-bottom: 6px;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 1.12rem;
  letter-spacing: 0;
}

.muted,
.field-hint,
.metric span,
.metric small,
.material-row p,
.setup-note {
  color: var(--muted);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  min-height: 118px;
  padding: 18px;
  border-radius: var(--radius);
  display: grid;
  align-content: center;
  gap: 6px;
}

.metric span {
  font-size: .82rem;
  font-weight: 800;
}

.metric strong {
  display: block;
  font-size: 2.2rem;
  line-height: 1;
  letter-spacing: 0;
}

.metric small {
  font-size: .78rem;
}

.sync-panel {
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-left: 5px solid var(--green);
}

.sync-panel > div:first-child {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 10px;
  align-items: start;
}

.sync-panel strong {
  line-height: 1.3;
}

.sync-panel p {
  grid-column: 2;
  margin: 4px 0 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.65;
}

.sync-dot {
  width: 10px;
  height: 10px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px var(--green-soft);
}

.sync-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.sync-meta span {
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
}

.work-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.work-tabs a {
  min-height: 74px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
  display: grid;
  gap: 3px;
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.work-tabs a:hover,
.work-tabs a.is-current {
  transform: translateY(-1px);
  border-color: #9ec5fe;
  box-shadow: 0 10px 26px rgba(23, 92, 211, .10);
}

.work-tabs span {
  color: var(--ink);
  font-weight: 900;
}

.work-tabs small {
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.45;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(310px, .55fr);
  gap: 16px;
  align-items: start;
}

.panel {
  border-radius: var(--radius);
  padding: 20px;
}

.panel-heading {
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.publish-note {
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  color: var(--green);
  background: var(--green-soft);
  font-size: .78rem;
  font-weight: 900;
  white-space: nowrap;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.full { grid-column: 1 / -1; }

.field label,
.section-label {
  color: #344054;
  font-size: .84rem;
  font-weight: 900;
}

input[type="text"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid #cfd7e3;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  outline: 0;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

textarea {
  min-height: 108px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(23, 92, 211, .13);
}

input[type="file"] {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px dashed #b8c4d4;
  background: var(--surface-soft);
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.button {
  appearance: none;
  border: 0;
  cursor: pointer;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 900;
  background: #fff;
  color: #344054;
  border: 1px solid #cfd7e3;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.button:hover {
  transform: translateY(-1px);
  border-color: #aebacc;
  box-shadow: 0 6px 16px rgba(16, 24, 40, .08);
}

.button.primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

.button.danger {
  color: var(--red);
  border-color: #f4c7c3;
  background: #fff;
}

.button.small {
  min-height: 34px;
  padding: 0 11px;
  font-size: .82rem;
}

.message {
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--blue-soft);
  color: #1849a9;
  border: 1px solid #b2ddff;
  font-weight: 800;
}

.message.error {
  background: var(--red-soft);
  color: var(--red);
  border-color: #fecdca;
}

.materials-list {
  display: grid;
  gap: 8px;
}

.material-row {
  border-radius: 12px;
  padding: 13px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  box-shadow: none;
}

.material-row:hover {
  background: #fcfdff;
}

.material-row h3 {
  margin: 0 0 6px;
  font-size: .98rem;
  letter-spacing: 0;
}

.material-row p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.65;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: .74rem;
  font-weight: 900;
  background: var(--green-soft);
  color: var(--green);
}

.status.draft {
  background: var(--surface-soft);
  color: var(--muted);
}

.status.coming_soon {
  background: var(--amber-soft);
  color: var(--amber);
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-pill {
  min-height: 34px;
  padding: 0 8px 0 11px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: none;
  background: var(--surface-soft);
}

.parts-box {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
}

.part-row {
  display: grid;
  grid-template-columns: minmax(120px, .8fr) minmax(140px, 1fr) minmax(160px, 1.2fr);
  gap: 10px;
}

.current-parts {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.current-part {
  padding: 10px 12px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: .86rem;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.danger-zone {
  border-color: #fecdca;
}

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
  }

  .sidebar-footer,
  .nav-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid,
  .form-grid,
  .metrics,
  .work-tabs {
    grid-template-columns: 1fr;
  }

  .topbar,
  .sync-panel,
  .material-row {
    display: grid;
    align-items: start;
  }

  .sync-meta,
  .topbar-actions {
    justify-content: start;
  }

  .part-row {
    grid-template-columns: 1fr;
  }
}