/* Zion OS — app shell and screen layout, following the "spec-sheet" pass
   of the wireframes (2a–2e): numbers on rules, one list, quiet chrome. */

.shell { display: flex; min-height: 100vh; background: var(--color-bg); }

/* — sidebar — */
.sidebar {
  width: 200px; flex: none; border-right: 1px solid var(--color-divider);
  display: flex; flex-direction: column; padding: 28px 0;
  position: sticky; top: 0; height: 100vh;
}
.brand {
  padding: 0 24px 36px; display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit;
}
.brand-dot { width: 9px; height: 9px; background: var(--color-accent); flex: none; }
.brand-name {
  font-family: var(--font-heading); font-weight: 600; font-size: 18px; letter-spacing: .08em;
}
.nav-main { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: block; padding: 10px 24px; font-size: 13.5px; text-decoration: none;
  color: var(--color-neutral-700); border-left: 2px solid transparent;
}
.nav-item:hover { color: var(--color-accent-700); }
.nav-item.is-active {
  color: var(--color-accent-700); font-weight: 600; border-left-color: var(--color-accent);
}
.nav-num {
  font-family: ui-monospace, Menlo, monospace; font-size: 10.5px;
  color: var(--color-neutral-500); margin-right: 10px;
}
.nav-item.is-active .nav-num { color: var(--color-accent); }
.nav-sub {
  display: block; padding: 6px 24px 6px 46px; font-size: 12.5px;
  text-decoration: none; color: var(--color-neutral-600);
}
.nav-sub:hover { color: var(--color-accent-700); }
.nav-sub.is-active { color: var(--color-accent-700); font-weight: 600; }
.sidebar-spacer { flex: 1; }
.side-kicker {
  padding: 0 24px 8px; font-size: 11px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--color-neutral-600);
}
.side-item {
  display: block; padding: 7px 24px; font-size: 13px; text-decoration: none;
  color: var(--color-neutral-700);
}
.side-item:hover { color: var(--color-accent-700); }
.side-item.is-active { color: var(--color-accent-700); font-weight: 600; }
.side-item.is-dim { color: var(--color-neutral-600); }
.sidebar-foot {
  padding: 18px 24px 0; border-top: 1px solid var(--color-divider);
  font-size: 12.5px; color: var(--color-neutral-700); margin-top: 18px;
}
.sidebar-foot .muted { color: var(--color-neutral-500); }
.sidebar-foot .signout { display: block; margin-top: 8px; font-size: 12px; }

/* — main column — */
.main { flex: 1; min-width: 0; padding: 40px 48px; display: flex; flex-direction: column; gap: 28px; }
.main.roomy { gap: 40px; }
.page-head { display: flex; align-items: flex-end; gap: 16px; }
.page-head .grow { flex: 1; }
.kicker {
  font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--color-accent-700);
}
.page-title { margin: 6px 0 0; font-size: 32px; font-weight: 600; }

/* — dashboard stats: numbers on rules, nothing boxed — */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat { border-top: 1px solid var(--color-text); padding-top: 14px; }
.stat-label {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-neutral-600);
}
.stat-value {
  font-family: var(--font-heading); font-size: 44px; font-weight: 600; line-height: 1.1;
}
.stat-note { font-size: 12px; color: var(--color-neutral-500); margin-top: 2px; }

/* — hairline list (tasks, search results) — */
.list-head {
  display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px;
}
.list-title {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-neutral-600);
}
.row {
  display: flex; align-items: center; gap: 16px; padding: 14px 0;
  border-top: 1px solid var(--color-divider); text-decoration: none; color: inherit;
}
.row:last-child { border-bottom: 1px solid var(--color-divider); }
.row .grow { flex: 1; font-size: 14px; }
a.row:hover { background: color-mix(in srgb, var(--color-text) 3%, transparent); }
.row-sub { font-size: 12.5px; color: var(--color-neutral-600); margin-top: 4px; }

/* — filter tag rows; tags are links — */
.filters { display: flex; flex-wrap: wrap; gap: 10px; }
.filters a.tag { text-decoration: none; }

/* — tools: blueprint plates — */
.plate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; flex: 1; }
.plate { padding: 28px; display: flex; flex-direction: column; gap: 10px; }
.plate-code { font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: var(--color-accent); }
.plate-title { font-family: var(--font-heading); font-size: 26px; font-weight: 600; }
.plate-desc { font-size: 13.5px; color: var(--color-neutral-700); flex: 1; }
.plate-foot { display: flex; align-items: center; gap: 12px; }
.plate.is-soon { opacity: .62; }
.plate.is-soon .plate-title { color: var(--color-neutral-700); }
.plate-note { font-size: 12.5px; color: var(--color-neutral-600); }

/* — login (2a) — */
.login-page {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 36px; background: var(--color-bg);
}
.login-mark { width: 10px; height: 10px; background: var(--color-accent); margin: 0 auto 16px; }
.login-name {
  font-family: var(--font-heading); font-weight: 600; font-size: 32px; letter-spacing: .1em;
}
.login-sub {
  font-size: 11px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--color-accent-700); margin-top: 4px;
}
.login-card {
  width: 320px; padding: 32px; display: flex; flex-direction: column; gap: 18px;
  background: transparent;
}
.login-foot { font-size: 12px; color: var(--color-neutral-600); }
.login-error { font-size: 12.5px; color: #a04545; text-align: center; }

/* — file detail — */
.detail-cols { display: flex; gap: 0; flex: 1; min-height: 0; }
.detail-main { flex: 1; display: flex; flex-direction: column; gap: 24px; min-width: 0; }
.detail-side {
  width: 280px; flex: none; border-left: 1px solid var(--color-divider);
  padding-left: 28px; margin-left: 28px;
  display: flex; flex-direction: column; gap: 20px;
}
.detail-kicker {
  font-size: 11px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--color-neutral-600); margin-bottom: 10px;
}
.detail-body { font-size: 13px; line-height: 2; }
.preview-well {
  flex: 1; min-height: 320px; display: flex; align-items: center; justify-content: center;
  background: repeating-linear-gradient(45deg, transparent 0 14px, rgba(89,128,166,.07) 14px 15px);
}
.preview-note { font-family: ui-monospace, Menlo, monospace; font-size: 12px; color: var(--color-neutral-600); }

/* — misc — */
.footnote { margin-top: auto; font-size: 12.5px; color: var(--color-neutral-600); }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.table a { text-decoration: none; }
.table td .tag { vertical-align: middle; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 720px; }
.form-grid .full { grid-column: 1 / -1; }
.field-label {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--color-neutral-600); margin-bottom: 6px;
}
.actions { display: flex; gap: 10px; align-items: center; }
.select-bar {
  flex-direction: row; align-items: center; gap: 18px; padding: 16px 20px; display: flex;
}
.flash {
  padding: 10px 16px; font-size: 13px; border: 1px solid var(--color-accent);
  color: var(--color-accent-800); background: var(--color-accent-100);
}

@media (max-width: 900px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 12px 8px; }
  .brand { padding: 0 16px; }
  .nav-main { flex-direction: row; flex-wrap: wrap; }
  .sidebar-foot { border-top: none; margin: 0; padding: 0 16px; }
  .sidebar-spacer, .side-kicker, .side-item { display: none; }
  .main { padding: 24px 20px; }
  .stat-grid, .plate-grid, .form-grid { grid-template-columns: 1fr; }
  .detail-cols { flex-direction: column; }
  .detail-side { width: auto; border-left: none; margin-left: 0; padding-left: 0; border-top: 1px solid var(--color-divider); padding-top: 20px; }
}