/* ============================================================
   Bilkoll — multi-tenant fleet admin design system.
   All classes prefixed `bk-` so it coexists with the YTS module CSS.
   Mercury/Stripe-style: cream bg, terracotta accent (per-company via --bk-accent).
   ============================================================ */
.bk {
  --bk-bg: #f6f5f1;
  --bk-surface: #ffffff;
  --bk-surface-2: #fafaf7;
  --bk-sunken: #f0eee8;
  --bk-ink: #18181a;
  --bk-ink-2: #4a4a48;
  --bk-ink-3: #8a8a86;
  --bk-ink-4: #b8b5ad;
  --bk-line: #e8e6e0;
  --bk-line-2: #ddd9d0;
  --bk-accent: #d97757;
  --bk-accent-soft: #f4e4d6;
  --bk-positive: #1f6d3a; --bk-positive-soft: #e3f0e6;
  --bk-warning: #a8721d;  --bk-warning-soft: #f5e9d4;
  --bk-danger: #9b2c2c;   --bk-danger-soft: #f6e0dc;
  --bk-info: #2a5a8a;     --bk-info-soft: #dde7f0;
  --bk-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --bk-sans: "Helvetica Neue", Helvetica, Arial, -apple-system, sans-serif;
  --bk-shadow-sm: 0 1px 0 rgba(20,20,20,.04), 0 1px 2px rgba(20,20,20,.04);
  --bk-shadow-lg: 0 8px 24px rgba(20,20,20,.08), 0 24px 48px rgba(20,20,20,.12);
  --bk-radius: 8px; --bk-radius-lg: 12px;
  font-family: var(--bk-sans);
  color: var(--bk-ink);
  background: var(--bk-bg);
}
.bk *, .bk *::before, .bk *::after { box-sizing: border-box; }
.bk .bk-num { font-variant-numeric: tabular-nums; }
.bk .bk-mono { font-family: var(--bk-mono); }
.bk .bk-eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; font-weight: 500; color: var(--bk-ink-3); }
.bk .bk-dim { color: var(--bk-ink-3); }

/* shell */
.bk-app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.bk-sidebar { background: var(--bk-sunken); border-right: 1px solid var(--bk-line); display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; }
.bk-brand { padding: 18px 20px 14px; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--bk-line); }
.bk-brand-mark { width: 28px; height: 28px; background: var(--bk-ink); color: var(--bk-bg); border-radius: 6px; display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.bk-brand-name { font-weight: 600; font-size: 15px; letter-spacing: -.01em; }
.bk-side-section { padding: 12px 12px 4px; }
.bk-side-title { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--bk-ink-3); padding: 4px 10px 8px; font-weight: 500; }
.bk-nav { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 6px; color: var(--bk-ink-2); font-size: 13.5px; font-weight: 450; cursor: pointer; margin-bottom: 1px; width: 100%; text-align: left; border: 0; background: none; }
.bk-nav:hover { background: var(--bk-line); color: var(--bk-ink); }
.bk-nav.active { background: var(--bk-surface); color: var(--bk-ink); font-weight: 500; box-shadow: var(--bk-shadow-sm); }
.bk-nav svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .75; }
.bk-nav.active svg { opacity: 1; }
.bk-nav .bk-count { margin-left: auto; font-size: 11px; color: var(--bk-ink-3); }
.bk-nav.warn .bk-count { background: var(--bk-warning-soft); color: var(--bk-warning); padding: 1px 6px; border-radius: 10px; font-weight: 600; }

/* company switcher */
.bk-cs-wrap { margin-top: auto; border-top: 1px solid var(--bk-line); padding: 12px; position: relative; }
.bk-cs { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 6px; width: 100%; cursor: pointer; border: 0; background: none; }
.bk-cs:hover { background: var(--bk-line); }
.bk-cs-avatar { width: 28px; height: 28px; border-radius: 6px; display: grid; place-items: center; color: #fff; font-weight: 600; font-size: 12px; flex-shrink: 0; }
.bk-cs-name { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: left; }
.bk-cs-sub { font-size: 11px; color: var(--bk-ink-3); text-align: left; }
.bk-cs-pop { position: absolute; bottom: calc(100% + 4px); left: 12px; right: 12px; background: var(--bk-surface); border: 1px solid var(--bk-line); border-radius: 8px; box-shadow: var(--bk-shadow-lg); padding: 6px; z-index: 50; }
.bk-cs-opt { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 6px; cursor: pointer; width: 100%; text-align: left; border: 0; background: none; }
.bk-cs-opt:hover { background: var(--bk-surface-2); }
.bk-cs-opt.active { background: var(--bk-accent-soft); }

/* topbar + content */
.bk-main { display: flex; flex-direction: column; min-width: 0; }
.bk-topbar { display: flex; align-items: center; gap: 16px; padding: 14px 28px; border-bottom: 1px solid var(--bk-line); background: var(--bk-surface); position: sticky; top: 0; z-index: 20; min-height: 60px; }
.bk-crumbs { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--bk-ink-3); }
.bk-crumbs .cur { color: var(--bk-ink); font-weight: 500; }
.bk-crumbs .lk { cursor: pointer; } .bk-crumbs .lk:hover { color: var(--bk-ink); }
.bk-topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.bk-iconbtn { width: 32px; height: 32px; border-radius: 6px; display: grid; place-items: center; color: var(--bk-ink-2); position: relative; border: 0; background: none; cursor: pointer; }
.bk-iconbtn:hover { background: var(--bk-surface-2); color: var(--bk-ink); }
.bk-iconbtn .bk-dot { position: absolute; top: 6px; right: 6px; width: 7px; height: 7px; border-radius: 50%; background: var(--bk-accent); }
.bk-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--bk-ink); color: var(--bk-bg); display: grid; place-items: center; font-size: 11px; font-weight: 600; }
.bk-content { padding: 28px 32px; max-width: 1400px; width: 100%; margin: 0 auto; }

/* buttons */
.bk-btn { height: 32px; padding: 0 12px; border-radius: 6px; font-size: 13px; font-weight: 500; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--bk-line-2); background: var(--bk-surface); color: var(--bk-ink); cursor: pointer; white-space: nowrap; font-family: inherit; }
.bk-btn:hover { background: var(--bk-surface-2); border-color: var(--bk-ink-4); }
.bk-btn.primary { background: var(--bk-ink); color: var(--bk-bg); border-color: var(--bk-ink); }
.bk-btn.accent { background: var(--bk-accent); color: #fff; border-color: var(--bk-accent); }
.bk-btn.accent:hover { filter: brightness(.95); }
.bk-btn.ghost { background: transparent; border-color: transparent; color: var(--bk-ink-2); }
.bk-btn.ghost:hover { background: var(--bk-surface-2); color: var(--bk-ink); }
.bk-btn.sm { height: 28px; padding: 0 10px; font-size: 12.5px; }
.bk-btn.danger { color: var(--bk-danger); } .bk-btn.danger:hover { background: var(--bk-danger-soft); border-color: var(--bk-danger); }

/* page header */
.bk-ph { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 26px; }
.bk-ph h1 { font-size: 28px; font-weight: 600; letter-spacing: -.02em; margin: 0 0 4px; }
.bk-ph .sub { color: var(--bk-ink-3); font-size: 14px; }
.bk-ph-actions { display: flex; gap: 8px; align-items: center; }

/* stat tiles */
.bk-stats { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--bk-surface); border: 1px solid var(--bk-line); border-radius: var(--bk-radius-lg); overflow: hidden; margin-bottom: 24px; }
.bk-stat { padding: 18px 20px; border-right: 1px solid var(--bk-line); }
.bk-stat:last-child { border-right: 0; }
.bk-stat .lbl { font-size: 11.5px; text-transform: uppercase; letter-spacing: .06em; color: var(--bk-ink-3); font-weight: 500; margin-bottom: 6px; }
.bk-stat .val { font-size: 26px; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.bk-stat .val .u { font-size: 13px; color: var(--bk-ink-3); font-weight: 500; margin-left: 4px; }
.bk-stat .delta { margin-top: 8px; font-size: 12px; font-weight: 500; }
.bk-stat .delta.up { color: var(--bk-positive); } .bk-stat .delta.down { color: var(--bk-danger); }

/* cards */
.bk-card { background: var(--bk-surface); border: 1px solid var(--bk-line); border-radius: var(--bk-radius-lg); overflow: hidden; }
.bk-card-head { padding: 16px 22px; border-bottom: 1px solid var(--bk-line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.bk-card-title { font-size: 14px; font-weight: 600; margin: 0; }
.bk-card-body { padding: 20px 22px; }
.bk-card-body.flush { padding: 0; }

/* table */
.bk-tbl { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.bk-tbl thead th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--bk-ink-3); font-weight: 500; padding: 10px 16px; border-bottom: 1px solid var(--bk-line); background: var(--bk-surface-2); white-space: nowrap; }
.bk-tbl tbody td { padding: 12px 16px; border-bottom: 1px solid var(--bk-line); font-size: 13.5px; vertical-align: middle; }
.bk-tbl tbody tr:last-child td { border-bottom: 0; }
.bk-tbl tbody tr { cursor: pointer; }
.bk-tbl tbody tr:hover { background: var(--bk-surface-2); }
.bk-tbl .r { text-align: right; }

/* badges */
.bk-badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 7px; border-radius: 4px; font-size: 11.5px; font-weight: 500; white-space: nowrap; }
.bk-badge .d { width: 6px; height: 6px; border-radius: 50%; }
.bk-badge.ok { background: var(--bk-positive-soft); color: var(--bk-positive); } .bk-badge.ok .d { background: var(--bk-positive); }
.bk-badge.warn { background: var(--bk-warning-soft); color: var(--bk-warning); } .bk-badge.warn .d { background: var(--bk-warning); }
.bk-badge.danger { background: var(--bk-danger-soft); color: var(--bk-danger); } .bk-badge.danger .d { background: var(--bk-danger); }
.bk-badge.muted { background: var(--bk-surface-2); color: var(--bk-ink-2); } .bk-badge.muted .d { background: var(--bk-ink-3); }
.bk-badge.accent { background: var(--bk-accent-soft); color: var(--bk-accent); } .bk-badge.accent .d { background: var(--bk-accent); }

/* reg plate */
.bk-plate { display: inline-flex; align-items: stretch; border: 1.5px solid var(--bk-ink); border-radius: 4px; overflow: hidden; font-family: var(--bk-mono); font-weight: 700; font-size: 13px; letter-spacing: .06em; line-height: 1; background: var(--bk-surface); }
.bk-plate .eu { background: #1d3a8a; color: #fff; padding: 4px 4px 3px; font-size: 9px; display: grid; place-items: center; font-weight: 600; }
.bk-plate .eu::before { content: "★"; display: block; font-size: 8px; margin-bottom: 1px; color: #f5c518; }
.bk-plate .n { padding: 5px 7px 4px; }
.bk-plate.lg { font-size: 16px; } .bk-plate.lg .n { padding: 7px 9px 6px; }

/* tabs */
.bk-tabs { display: flex; border-bottom: 1px solid var(--bk-line); }
.bk-tab { padding: 10px 14px; font-size: 13px; font-weight: 450; color: var(--bk-ink-3); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; background: none; border-top: 0; border-left: 0; border-right: 0; }
.bk-tab:hover { color: var(--bk-ink); }
.bk-tab.active { color: var(--bk-ink); border-bottom-color: var(--bk-ink); font-weight: 500; }

/* filter chips */
.bk-filters { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.bk-chip { display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px; border: 1px solid var(--bk-line-2); background: var(--bk-surface); border-radius: 6px; font-size: 12.5px; cursor: pointer; color: var(--bk-ink-2); }
.bk-chip:hover { background: var(--bk-surface-2); }
.bk-chip.active { background: var(--bk-ink); color: var(--bk-bg); border-color: var(--bk-ink); }

/* def list */
.bk-defs { display: grid; grid-template-columns: max-content 1fr; column-gap: 24px; row-gap: 10px; font-size: 13.5px; }
.bk-defs dt { color: var(--bk-ink-3); } .bk-defs dd { margin: 0; font-weight: 500; font-variant-numeric: tabular-nums; }

/* forms */
.bk-field { display: flex; flex-direction: column; gap: 6px; }
.bk-field-lbl { font-size: 12px; font-weight: 500; color: var(--bk-ink-2); }
.bk-input, .bk-select, .bk-textarea { height: 36px; background: var(--bk-surface); border: 1px solid var(--bk-line-2); border-radius: 6px; padding: 0 10px; font-size: 13.5px; color: var(--bk-ink); width: 100%; font-family: inherit; }
.bk-textarea { height: auto; min-height: 70px; padding: 10px; resize: vertical; }
.bk-input:focus, .bk-select:focus, .bk-textarea:focus { outline: none; border-color: var(--bk-ink-2); box-shadow: 0 0 0 3px rgba(40,40,40,.06); }
.bk-form-row { display: grid; gap: 14px; } .bk-form-row.c2 { grid-template-columns: 1fr 1fr; } .bk-form-row.c3 { grid-template-columns: 1fr 1fr 1fr; }

/* grids + misc */
.bk-grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.bk-grid-2e { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.bk-grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.bk-row { display: flex; align-items: center; gap: 12px; }
.bk-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.bk-empty { text-align: center; padding: 40px 20px; color: var(--bk-ink-3); }
.bk-empty .ei { width: 44px; height: 44px; margin: 0 auto 10px; opacity: .5; }
.bk-spin { width: 26px; height: 26px; border: 3px solid var(--bk-line); border-top-color: var(--bk-accent); border-radius: 999px; animation: bkspin .7s linear infinite; margin: 30px auto; }
@keyframes bkspin { to { transform: rotate(360deg); } }
.bk-mt8 { margin-top: 8px; } .bk-mt16 { margin-top: 16px; } .bk-mb16 { margin-bottom: 16px; } .bk-mb24 { margin-bottom: 24px; }

/* modal (reuses portal; bk- scoped) */
.bk-modal-bg { position: fixed; inset: 0; background: rgba(20,20,20,.4); z-index: 100; display: grid; place-items: center; padding: 24px; }
.bk-modal { background: var(--bk-surface); border: 1px solid var(--bk-line); border-radius: 14px; width: 100%; max-width: 560px; max-height: 90vh; display: flex; flex-direction: column; box-shadow: var(--bk-shadow-lg); }
.bk-modal-head { padding: 18px 22px 14px; display: flex; align-items: flex-start; justify-content: space-between; border-bottom: 1px solid var(--bk-line); }
.bk-modal-head h3 { font-size: 17px; font-weight: 600; margin: 0; }
.bk-modal-body { padding: 18px 22px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.bk-modal-foot { padding: 14px 22px; border-top: 1px solid var(--bk-line); display: flex; justify-content: flex-end; gap: 10px; background: var(--bk-surface-2); border-radius: 0 0 14px 14px; }

/* mobile menu toggle (hidden on desktop) */
.bk-hamburger { display: none; width: 32px; height: 32px; border-radius: 6px; place-items: center; color: var(--bk-ink-2); border: 0; background: none; cursor: pointer; }
.bk-sidebar-backdrop { display: none; }

@media (max-width: 820px) {
  .bk-app { grid-template-columns: 1fr; }
  .bk-sidebar { position: fixed; top: 0; left: 0; bottom: 0; width: 264px; z-index: 60; transform: translateX(-100%); transition: transform .2s ease; }
  .bk-sidebar.open { transform: translateX(0); box-shadow: var(--bk-shadow-lg); }
  .bk-sidebar-backdrop.show { display: block; position: fixed; inset: 0; background: rgba(20,20,20,.4); z-index: 55; }
  .bk-hamburger { display: grid; }
  .bk-grid-2, .bk-grid-2e, .bk-grid-3 { grid-template-columns: 1fr; }
  .bk-stats { grid-template-columns: 1fr 1fr; }
  .bk-content { padding: 16px; }
  .bk-ph { flex-direction: column; align-items: flex-start; }
  .bk-topbar { padding: 10px 16px; }
  .bk-modal { max-width: 100%; }
}
@media (max-width: 520px) { .bk-stats { grid-template-columns: 1fr; } }