/* ============================================================
   blindcat design system
   ============================================================
   Refined industrial. Dark default. Data-first. Conservative.
   ============================================================ */

:root {
  /* Surfaces (neutral zinc, not navy) */
  --bg:               #18181b;
  --surface:          #1f1f23;
  --surface-2:        #27272a;
  --surface-hover:    #2d2d31;

  /* Borders — thin, low-contrast */
  --border-subtle:    #27272a;
  --border:           #3f3f46;
  --border-strong:    #52525b;

  /* Text */
  --text:             #fafafa;
  --text-2:           #d4d4d8;
  --text-muted:       #a1a1aa;
  --text-dim:         #71717a;

  /* Accent — used sparingly, only for indicators */
  --accent:           #15803d;      /* muted forest green */
  --accent-2:         #166534;
  --accent-bg:        rgba(21, 128, 61, 0.12);
  --accent-border:    rgba(21, 128, 61, 0.35);

  /* Semantic (muted versions, not signal versions) */
  --c-ok:             #16a34a;
  --c-warn:           #d97706;
  --c-danger:         #b91c1c;
  --c-info:           #2563eb;
  --c-ok-bg:          rgba(22, 163, 74, 0.10);
  --c-warn-bg:        rgba(217, 119, 6, 0.10);
  --c-danger-bg:      rgba(185, 28, 28, 0.10);
  --c-info-bg:        rgba(37, 99, 235, 0.10);
  --c-ok-border:      rgba(22, 163, 74, 0.30);
  --c-warn-border:    rgba(217, 119, 6, 0.30);
  --c-danger-border:  rgba(185, 28, 28, 0.35);
  --c-info-border:    rgba(37, 99, 235, 0.30);

  /* Spacing */
  --s-1: 0.25rem;  --s-2: 0.5rem;  --s-3: 0.75rem;  --s-4: 1rem;
  --s-5: 1.25rem;  --s-6: 1.5rem;  --s-8: 2rem;    --s-10: 2.5rem;
  --s-12: 3rem;

  /* Type */
  --font: "Hanken Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --t-xs:   0.75rem;     /* 12 */
  --t-sm:   0.8125rem;   /* 13 */
  --t-base: 0.875rem;    /* 14 — smaller default = density */
  --t-lg:   1rem;        /* 16 */
  --t-xl:   1.25rem;     /* 20 */
  --t-2xl:  1.625rem;    /* 26 */
  --t-3xl:  2rem;        /* 32 */

  /* Squared radius — small only */
  --r-sm:  2px;
  --r:     4px;
  --r-md:  6px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html, body { height: 100%; }
body { line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, video, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* ---- Base ---- */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--t-base);
  font-feature-settings: 'tnum';   /* tabular nums for data */
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.25;
}
h1 { font-size: var(--t-2xl); letter-spacing: -0.02em; font-weight: 600; }
h2 { font-size: var(--t-lg); }
h3 { font-size: var(--t-base); }
p  { color: var(--text-2); }

code, .mono {
  font-family: var(--mono);
  font-size: 0.92em;
  font-feature-settings: 'tnum';
}

::selection { background: var(--accent-bg); }

/* ---- Layout ---- */
.app { min-height: 100%; display: flex; flex-direction: column; }

.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--s-5);
}
.app-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--s-5);
  height: 48px;
}

.app-main {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: var(--s-8) var(--s-5);
}

.container-narrow {
  max-width: 380px;
  margin: var(--s-12) auto;
  padding: 0 var(--s-4);
}

.stack > * + * { margin-top: var(--s-4); }
.stack-tight > * + * { margin-top: var(--s-2); }
.stack-lg > * + * { margin-top: var(--s-6); }

/* ---- Brand wordmark ---- */
.logo {
  font-family: var(--font);
  font-weight: 600;
  font-size: var(--t-lg);
  letter-spacing: -0.02em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.logo::before {
  content: '';
  width: 2.3em;
  height: 1.5em;
  background-image: url('/static/img/cat.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  filter: invert(1);
  transform: translateY(-0.1em);   /* optical centering — cat looks more centered when slightly lifted */
}

/* ---- Nav ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: var(--s-4);
  flex: 1;
}
.nav-link {
  color: var(--text-muted);
  font-size: var(--t-sm);
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  transition: 100ms;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--text); background: var(--surface-2); }

.nav-user {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-size: var(--t-sm);
  flex-shrink: 0;            /* Logout etc must always be reachable */
  margin-left: auto;          /* push to the right edge */
}
.nav-user-email {
  color: var(--text-muted);
  font-family: var(--mono);
  font-size: var(--t-xs);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
@media (max-width: 1100px) {
  .nav-user-email { display: none; }   /* Email is the easiest thing to drop on narrow viewports */
}
.nav-links {
  min-width: 0;               /* allow shrink so nav-user keeps its space */
}


/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: var(--t-sm);
  font-weight: 500;
  border-radius: var(--r);
  border: 1px solid transparent;
  transition: 100ms;
  white-space: nowrap;
  line-height: 1.4;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
}
.btn-primary:hover:not(:disabled) { background: var(--text-2); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--surface-hover); border-color: var(--border-strong); }

.btn-danger {
  background: var(--c-danger);
  color: #fff;
  font-weight: 500;
}
.btn-danger:hover:not(:disabled) { background: #991b1b; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }

.btn-sm { padding: 4px 10px; font-size: var(--t-xs); }
.btn-block { width: 100%; }

/* ---- Inputs ---- */
.input {
  display: block;
  width: 100%;
  padding: 8px 10px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: var(--t-sm);
  transition: 100ms;
}
.input:focus {
  outline: none;
  border-color: var(--text-muted);
  box-shadow: 0 0 0 1px var(--text-muted);
}
.input::placeholder { color: var(--text-dim); }

.field { display: block; }
.field-label {
  display: block;
  margin-bottom: 6px;
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--text-muted);
}

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.card-header {
  padding: var(--s-3) var(--s-5);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.card-header h2, .card-header h3 { margin: 0; }
.card-body { padding: var(--s-5); }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--t-sm);
}
.table thead { background: transparent; }
.table th {
  padding: 8px var(--s-3);
  text-align: left;
  font-weight: 500;
  font-size: var(--t-xs);
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: 8px var(--s-3);
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
  color: var(--text-2);
}
.table tbody tr:hover { background: var(--surface-2); }
.table tbody tr:last-child td { border-bottom: 0; }

/* ---- Code chip ---- */
code, .chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--surface-2);
  color: var(--text);
  padding: 1px 5px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  font-weight: 400;
}

/* ---- Badges (squared, low-saturation) ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  font-size: var(--t-xs);
  font-weight: 500;
  border-radius: var(--r-sm);
  border: 1px solid;
  line-height: 1.4;
  font-family: var(--mono);
}
.badge-ok      { background: var(--c-ok-bg);     color: var(--c-ok);     border-color: var(--c-ok-border); }
.badge-warn    { background: var(--c-warn-bg);   color: var(--c-warn);   border-color: var(--c-warn-border); }
.badge-danger  { background: var(--c-danger-bg); color: #fca5a5;         border-color: var(--c-danger-border); }
.badge-info    { background: var(--c-info-bg);   color: #93c5fd;         border-color: var(--c-info-border); }
.badge-muted   { background: var(--surface-2);   color: var(--text-muted); border-color: var(--border); }

/* ---- Banners ---- */
.banner {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-radius: var(--r);
  margin-bottom: var(--s-5);
  font-size: var(--t-sm);
  border: 1px solid;
}
.banner-warning {
  background: var(--c-warn-bg);
  border-color: var(--c-warn-border);
  color: var(--text-2);
}
.banner-warning a { color: var(--c-warn); font-weight: 600; border-bottom: 1px solid currentColor; }

.banner-danger {
  background: var(--c-danger-bg);
  border-color: var(--c-danger-border);
  color: var(--text);
}
.banner-danger code { background: rgba(0,0,0,0.4); color: #fff; }

.banner-content { flex: 1; }
.banner .meta { color: var(--text-muted); font-size: var(--t-xs); margin-top: 2px; }

/* ---- Stat grid ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-3);
  margin-bottom: var(--s-6);
}
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--s-4);
}
.stat-label {
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.stat-value {
  font-family: var(--mono);
  font-size: var(--t-2xl);
  font-weight: 500;
  color: var(--text);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.stat-meta {
  margin-top: var(--s-2);
  font-size: var(--t-xs);
  color: var(--text-dim);
}
.stat-meta a { color: var(--text-muted); border-bottom: 1px solid var(--border); }
.stat-meta a:hover { color: var(--text); border-bottom-color: var(--text-muted); }

/* Indicator dot for "alive" status */
.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-ok);
  margin-right: 6px;
  vertical-align: 1px;
}
.dot-danger { background: var(--c-danger); }
.dot-warn { background: var(--c-warn); }

/* ---- Utility ---- */
.text-muted { color: var(--text-muted); }
.text-dim   { color: var(--text-dim); }
.text-ok    { color: var(--c-ok); }
.text-mono  { font-family: var(--mono); }
.text-sm    { font-size: var(--t-sm); }
.text-xs    { font-size: var(--t-xs); }
.text-center { text-align: center; }

.flex { display: flex; }
.gap-2 { gap: var(--s-2); }
.gap-3 { gap: var(--s-3); }
.mt-2 { margin-top: var(--s-2); }
.mt-4 { margin-top: var(--s-4); }
.mt-6 { margin-top: var(--s-6); }
.mb-4 { margin-bottom: var(--s-4); }
.mb-6 { margin-bottom: var(--s-6); }

.page-header { margin-bottom: var(--s-6); }
.page-header h1 { margin-bottom: 4px; }
.page-header .subtitle { color: var(--text-muted); font-size: var(--t-sm); }

.empty-state {
  text-align: center;
  padding: var(--s-12) var(--s-6);
  color: var(--text-dim);
  font-size: var(--t-sm);
}

.form-error {
  background: var(--c-danger-bg);
  border: 1px solid var(--c-danger-border);
  color: var(--text);
  padding: 8px var(--s-3);
  border-radius: var(--r);
  font-size: var(--t-sm);
  margin-bottom: var(--s-4);
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .app-header-inner { gap: var(--s-3); height: auto; padding: var(--s-3) 0; flex-wrap: wrap; }
  .app-main { padding: var(--s-4); }
  h1 { font-size: var(--t-xl); }
  .stat-grid { grid-template-columns: 1fr; }

  /* Hamburger pattern: hide nav-links by default, show when .nav-open */
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    order: 99;
    width: 100%;
    flex-direction: column;
    gap: 2px;
    padding-top: var(--s-3);
    border-top: 1px solid var(--border);
    margin-top: var(--s-2);
  }
  .app-header.nav-open .nav-links { display: flex; }

  .nav-links .nav-link,
  .nav-links .nav-dropdown {
    width: 100%;
    padding: 12px 14px !important;
    border-radius: var(--r-sm);
    text-align: left;
  }
  .nav-links .nav-link:hover,
  .nav-links .nav-dropdown-toggle:hover { background: var(--surface-2); }

  /* Settings sub-menu expands inline rather than overlaying */
  .nav-dropdown { width: 100%; }
  .nav-dropdown-menu {
    position: static;
    box-shadow: none;
    border: 0;
    background: var(--surface-2);
    margin: 4px 0 0 0;
    padding: 4px;
    min-width: 0;
  }
  .nav-dropdown-toggle { width: 100%; justify-content: space-between; }
  .nav-dropdown-menu > a { padding: 10px 12px; }

  /* Order: logo - hamburger - user controls. Site picker drops below. */
  .logo { order: 1; }
  .nav-toggle { order: 2; }
  .nav-user { order: 3; margin-left: auto; }
  .nav-zone-picker { order: 4; width: 100%; }
}

/* ---- Stat-tile unit suffix (°C, etc.) ---- */
.stat-value .unit {
  font-family: var(--font);
  font-size: 0.5em;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 3px;
  vertical-align: 0.6em;
  letter-spacing: 0;
}

/* ---- Tenant page: devices column link with hover-arrow ---- */
.link-arrow {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--t-sm);
  transition: 100ms;
}
.link-arrow:hover { color: var(--text); text-decoration: none; }
.link-arrow-glyph {
  color: var(--text-dim);
  transition: transform 100ms, color 100ms;
}
.link-arrow:hover .link-arrow-glyph {
  color: var(--text-muted);
  transform: translateX(2px);
}

/* ---- Chart grid (dashboard time-series) ---- */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: var(--s-4);
  margin-bottom: var(--s-6);
}
.chart-grid .card { overflow: hidden; }   /* clip chart SVG to card */
@media (max-width: 640px) {
  .chart-grid { grid-template-columns: 1fr; }
}

/* ---- Chart controls (range pills, mode toggle) ---- */
.chart-controls {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-4);
  flex-wrap: wrap;
}
.pill-group {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 2px;
  gap: 2px;
}
.pill-group button {
  padding: 4px 12px;
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  transition: 80ms;
}
.pill-group button:hover { color: var(--text); }
.pill-group button.active {
  background: var(--surface-2);
  color: var(--text);
}
.chart-card-wide { grid-column: 1 / -1; }

/* ---- Vertical-stacked logo (login/forgot/reset pages) ---- */
.logo-stacked {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font);
  font-weight: 600;
  font-size: var(--t-2xl);
  letter-spacing: -0.02em;
  color: var(--text);
}
.logo-stacked::before {
  content: '';
  width: 3em;
  height: 2em;
  background-image: url('/static/img/cat.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  filter: invert(1);
}


/* ---- Inventory: dynamic row editors (fields, stages) ---- */
.inventory-row {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: var(--s-2);
}
.inventory-row-inner {
  display: flex;
  gap: var(--s-2);
  align-items: center;
  flex-wrap: wrap;
}
.inventory-row .input { margin-bottom: 0; }
.inventory-row .row-remove { padding: 4px 10px; }


/* ─────────── Modal dialog (used by calendar, finance, anywhere) ─────────── */
.modal-dialog,
.event-modal {
    /* Native <dialog> centers itself only when shown via showModal().
       inset:0 + margin:auto makes centering robust across browsers. */
    inset: 0;
    margin: auto;

    border: 1px solid var(--border);
    border-radius: var(--r);
    background: var(--surface);
    color: var(--text);
    padding: 0;
    width: min(560px, 92vw);
    max-height: 92vh;
    overflow-y: auto;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}
.modal-dialog::backdrop,
.event-modal::backdrop {
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(2px);
}
.modal-dialog .modal-header,
.event-modal .modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--s-4) var(--s-5);
    border-bottom: 1px solid var(--border);
}
.modal-dialog .modal-header h2,
.event-modal .modal-header h2 { margin: 0; font-size: var(--t-lg); }
.modal-dialog .modal-close,
.event-modal .modal-close {
    background: transparent; border: 0; color: var(--text-muted);
    font-size: 22px; line-height: 1; cursor: pointer; padding: 0 6px;
}
.modal-dialog .modal-body,
.event-modal .modal-body {
    padding: var(--s-5);
    display: flex; flex-direction: column;
    gap: var(--s-3);
}
.modal-dialog .modal-actions,
.event-modal .modal-actions {
    display: flex; gap: var(--s-2); align-items: center;
    padding: var(--s-3) var(--s-5) var(--s-4);
    border-top: 1px solid var(--border);
}
.modal-dialog .form-row,
.event-modal .form-row {
    display: flex; flex-direction: column; gap: 4px;
    font-size: var(--t-xs); color: var(--text-muted);
}
.modal-dialog .form-row > input,
.modal-dialog .form-row > select,
.modal-dialog .form-row > textarea,
.event-modal .form-row > input,
.event-modal .form-row > select,
.event-modal .form-row > textarea {
    font-family: inherit; font-size: var(--t-sm);
    background: var(--surface-2); color: var(--text);
    border: 1px solid var(--border); border-radius: var(--r-sm);
    padding: 8px 10px;
}
.modal-dialog .form-row > input:focus,
.modal-dialog .form-row > select:focus,
.modal-dialog .form-row > textarea:focus,
.event-modal .form-row > input:focus,
.event-modal .form-row > select:focus,
.event-modal .form-row > textarea:focus {
    outline: 1px solid var(--text); outline-offset: 0;
}
.modal-dialog .form-grid-2,
.event-modal .form-grid-2 {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3);
}
@media (max-width: 520px) {
    .modal-dialog .form-grid-2,
    .event-modal .form-grid-2 { grid-template-columns: 1fr; }
}

/* ─────────── Arm-to-delete pattern (replaces native confirm()) ─────────── */
.btn-confirm-armed {
    background: var(--c-danger) !important;
    color: #fff !important;
    border-color: var(--c-danger) !important;
}
.btn-confirm-armed::after {
    content: ' - tap again';
    font-weight: 600;
}


/* ─────── Nav dropdown (Settings menu) ─────── */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-toggle {
    background: transparent; border: 0; cursor: pointer;
    font: inherit; padding: 6px 12px;
    color: var(--text-muted);
    display: inline-flex; align-items: center; gap: 4px;
    border-radius: var(--r-sm);
}
.nav-dropdown-toggle:hover { color: var(--text); }
.nav-dropdown-caret { font-size: 10px; opacity: 0.7; }
.nav-dropdown-menu {
    position: absolute; top: 100%; right: 0; margin-top: 6px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r);
    min-width: 180px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 100;
    padding: 4px;
    display: none;
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu > a {
    display: block; padding: 8px 12px;
    color: var(--text); text-decoration: none;
    font-size: var(--t-sm); border-radius: var(--r-sm);
}
.nav-dropdown-menu > a:hover { background: var(--surface-2); }

/* ─────── PWA install banner ─────── */
.pwa-banner {
    position: fixed; bottom: 16px; left: 16px; right: 16px;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--r);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    animation: pwa-slide-up 250ms ease-out;
}
@keyframes pwa-slide-up {
    from { transform: translateY(120%); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}
.pwa-banner-content {
    display: flex; align-items: center; gap: var(--s-3);
    padding: var(--s-3) var(--s-4);
}
.pwa-banner-icon {
    font-size: 20px; color: var(--text);
    background: var(--surface-2);
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}
.pwa-banner-text { flex: 1; min-width: 0; }
.pwa-banner-text strong { display: block; font-size: var(--t-sm); }
.pwa-banner-close {
    background: transparent; border: 0; color: var(--text-muted);
    font-size: 22px; cursor: pointer; padding: 4px 8px;
}
@media (min-width: 821px) {
    .pwa-banner { display: none !important; }   /* desktop never sees the banner */
}

/* ---- Nav: zone (Site) picker ---- */
.nav-zone-picker {
  display: inline-flex;
  align-items: center;
  margin: 0 var(--s-2);
}
.nav-zone-picker select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: var(--t-sm);
  font-weight: 500;
  font-family: inherit;
  padding: 5px 28px 5px 10px;
  cursor: pointer;
  transition: 100ms;
  /* custom chevron */
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none'%3e%3cpath d='M1 1l4 4 4-4' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.nav-zone-picker select:hover { color: var(--text); border-color: var(--text-muted); }
.nav-zone-picker select:focus { outline: none; border-color: var(--text); color: var(--text); }
/* dropdown panel still uses browser defaults (with options on a dark UA looks fine);
   make sure option text is readable in both light + dark UA chromes */
.nav-zone-picker select option,
.nav-zone-picker select optgroup { background: var(--surface); color: var(--text); }


.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Mobile responsive sweep (task #57)
   Targets 640px and 480px viewports. CSS-only fix - we don't
   touch templates so inline style="min-width: 200px;" etc.
   gets overridden globally below the breakpoint.
   ============================================================ */

@media (max-width: 640px) {
  /* 1) Inline min-width on .field rows causes horizontal scroll on phones.
        Reset so flex children can shrink to viewport width. */
  .field { min-width: 0 !important; flex-basis: 100% !important; }

  /* 2) Flex rows that hold multiple .field columns: stack them. */
  .card-body .flex.gap-3,
  .stack .flex.gap-3 {
    flex-direction: column;
    align-items: stretch !important;
  }

  /* 3) Page headers that split title + side controls: stack. */
  .page-header { flex-direction: column; gap: var(--s-2); }

  /* 4) Cards have tighter chrome. */
  .card-body { padding: var(--s-3); }
  .card-header { padding: var(--s-3); }
  .card-header h2 { font-size: var(--t-md); }

  /* 5) Tables: smaller font + tighter cell padding so more columns fit
        before .table-wrap kicks in horizontal scroll. */
  .table { font-size: var(--t-xs); }
  .table th, .table td { padding: 6px 8px !important; }

  /* 6) Forms: inputs + selects always full width. */
  .input { width: 100%; max-width: 100% !important; }

  /* 7) Buttons: full-width primary in card forms; ghost actions stay inline. */
  .card-body .btn.btn-primary {
    width: 100%;
    justify-content: center;
    align-self: stretch !important;
  }

  /* 8) App main padding tighter. */
  .app-main { padding: var(--s-3) !important; }

  /* 9) Banner stacks Stop/Restore buttons under the message. */
  .banner { flex-direction: column; align-items: stretch; gap: var(--s-2); }

  /* 10) Hide the nav-user role badge on phones; it's noise. */
  .nav-user .badge-muted { display: none; }

  /* 11) Inventory stat-grid + chart-grid already collapse via existing rules. */

  /* 12) Site picker: take its own row, full width, smaller font. */
  .nav-zone-picker { width: 100%; margin: var(--s-2) 0 !important; order: 4; }
  .nav-zone-picker select { width: 100%; max-width: none; }

  /* 13) Fieldsets in automation form: tighter inner padding. */
  fieldset { padding: var(--s-2) !important; }
  fieldset legend { font-size: var(--t-xs); }

  /* 14) Forms inline with action buttons (locations rename etc.): wrap. */
  .text-right .flex.gap-1,
  .text-right .flex.gap-2 { justify-content: flex-start; flex-wrap: wrap; }
}

/* Extra-narrow: ~iPhone SE / portrait phone. Tighten further. */
@media (max-width: 480px) {
  h1 { font-size: var(--t-lg); }
  .subtitle { font-size: var(--t-sm); }
  .stat-value { font-size: var(--t-2xl); }
  .stat-grid { gap: var(--s-2); }
  .app-main { padding: var(--s-2) !important; }

  /* Hide breadcrumb-style "in <parent path>" text in location rows. */
  .text-dim.text-xs { display: none; }

  /* Truncate long URLs / monospace IDs to a fixed char count. */
  .text-mono { word-break: break-all; }
}

/* Tap-target: ensure interactive controls are >= 36px tall on touch. */
@media (max-width: 640px) and (pointer: coarse) {
  .btn-sm { padding: 8px 10px; }
  .btn { padding: 10px 14px; }
  .input, select { min-height: 40px; }
}

/* ---- Mobile nav hamburger button ---- */
/* The actual display:inline-flex lives in @media (max-width: 640px) above.
   Desktop hides via @media (min-width: 641px) below so source order works. */
.nav-toggle {
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  border-radius: var(--r-sm);
  display: inline-flex;
}
@media (min-width: 641px) {
  .nav-toggle { display: none; }
}
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  transition: 100ms;
  border-radius: 1px;
}
.nav-toggle:hover .nav-toggle-bar,
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: var(--text); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}