/* Stack design system tokens — include verbatim in every app */
:root {
  --navy:        #1a1a2e;
  --navy-dark:   #0f0f20;
  --gold:        #c9a84c;
  --gold-light:  #e8c96d;
  --surface:     rgba(255,255,255,0.07);
  --surface-2:   rgba(255,255,255,0.08);
  --text:        rgba(255,255,255,0.88);
  --text-muted:  rgba(255,255,255,0.48);
  --body-bg:     #f4f5f7;
  --card-bg:     #ffffff;
  --card-border: #e4e8ee;
  --text-dark:   #1e293b;
  --text-mid:    #64748b;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.08);
  --danger:      #dc2626;
  --radius:      10px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
body { background: var(--body-bg); color: var(--text-dark); font-family: var(--font); }

/* App theme + semantic tokens */
:root {
  --app-primary:       #1e6091;
  --app-primary-light: #2c7fb8;

  /* Meter category colour coding (content only — buttons stay gold) */
  --cat-electric: #d97706;
  --cat-gas:      #dc2626;
  --cat-oil:      #78716c;
  --cat-water:    #0284c7;

  --danger-bg:  #fef2f2;
  --warn-bg:    #fffbeb;
  --ok-bg:      #f0fdf4;

  --sidebar-w: 240px;
  --topbar-h:  56px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body, #root { height: 100%; margin: 0; font-size: 14px; }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 2px; }

/* ── App shell ─────────────────────────────────────────────── */
.app-shell { display: flex; height: 100vh; overflow: hidden; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--navy);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}
.sidebar-logo {
  padding: 20px 16px 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-logo svg { opacity: .8; }
.sidebar-nav { flex: 1; padding: 8px 0; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13.5px;
  transition: background .15s, color .15s;
}
.sidebar-nav a:hover { background: var(--surface); color: var(--text); }
.sidebar-nav a.active { background: rgba(201,168,76,.1); color: var(--gold); }
.sidebar-user {
  padding: 12px 16px;
  border-top: 1px solid var(--surface-2);
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-bar {
  display: none;
  height: var(--topbar-h);
  background: var(--navy);
  color: var(--text);
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  flex-shrink: 0;
}
.top-bar-title { flex: 1; font-size: 15px; font-weight: 600; color: var(--gold); }
.top-bar-nav { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.top-bar-nav::-webkit-scrollbar { display: none; }
.top-bar-nav a {
  color: var(--text-muted);
  padding: 6px 8px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 12px;
  white-space: nowrap;
}
.top-bar-nav a.active { color: var(--gold); }

.page-content { flex: 1; overflow-y: auto; display: flex; flex-direction: column; }

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 200;
    transform: translateX(calc(-1 * var(--sidebar-w)));
    transition: transform 0.25s ease;
  }
  .app-shell.menu-open .sidebar { transform: translateX(0); }
  .top-bar { display: flex; }
  .app-shell { flex-direction: column; }
  .field-row { flex-direction: column; }
}

.menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 199;
}

.top-bar-burger {
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 4px;
  flex-shrink: 0;
}

/* ── Page chrome ───────────────────────────────────────────── */
.page { padding: 20px; max-width: 1200px; width: 100%; margin: 0 auto; }
.page-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.page-header h1 { font-size: 18px; margin: 0; flex: 1; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-dark);
  border-radius: var(--radius);
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
  transition: background .12s, border-color .12s;
}
.btn:hover { border-color: var(--text-mid); }
.btn:disabled { opacity: .5; cursor: default; }
.btn-primary { background: var(--gold); border-color: var(--gold); color: var(--navy); font-weight: 600; }
.btn-primary:hover { background: var(--gold-light); border-color: var(--gold-light); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 8px; }

/* ── Forms ─────────────────────────────────────────────────── */
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; font-weight: 600; color: var(--text-mid); margin-bottom: 4px; }
.field input[type="text"], .field input[type="email"], .field input[type="date"], .field input[type="time"],
.field input[type="number"], .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13.5px;
  font-family: var(--font);
  color: var(--text-dark);
  background: var(--card-bg);
}
.field textarea { min-height: 72px; resize: vertical; }
.field-row { display: flex; gap: 12px; }
.field-row > .field { flex: 1; }
.field-check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; cursor: pointer; }
.field-check input { width: 16px; height: 16px; accent-color: var(--gold); }
.field-hint { font-size: 11.5px; color: var(--text-mid); margin-top: 3px; }

/* ── Cards & lists ─────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 14px 16px;
  margin-bottom: 10px;
}

.meter-card {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: box-shadow .12s;
}
.meter-card:hover { box-shadow: var(--shadow-md); }
.meter-card.inactive { opacity: .55; }
.meter-thumb {
  width: 48px; height: 48px; border-radius: 8px; object-fit: cover;
  border: 1px solid var(--card-border); flex-shrink: 0; background: var(--body-bg);
}
.meter-thumb-placeholder {
  width: 48px; height: 48px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--body-bg); color: var(--text-mid);
}
.meter-card-main { flex: 1; min-width: 0; }
.meter-card-title { font-weight: 600; font-size: 14px; margin-bottom: 2px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.meter-card-meta { font-size: 12px; color: var(--text-mid); display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.meter-card-side { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; flex-shrink: 0; }
.meter-reading-val { font-weight: 700; font-size: 14px; }
.meter-reading-date { font-size: 11px; color: var(--text-mid); }

/* ── Category tabs ─────────────────────────────────────────── */
.tab-bar { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tab-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 20px; border: 1px solid var(--card-border);
  background: var(--card-bg); cursor: pointer; font-size: 13px; color: var(--text-mid);
  font-family: var(--font); transition: all .12s;
}
.tab-btn:hover { border-color: var(--gold); color: var(--text-dark); }
.tab-btn.active { background: var(--navy); border-color: var(--navy); color: var(--gold); font-weight: 600; }

/* Category colour dots (content coding, not buttons) */
.cat-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.cat-electric { background: var(--cat-electric); }
.cat-gas { background: var(--cat-gas); }
.cat-oil { background: var(--cat-oil); }
.cat-water { background: var(--cat-water); }

/* ── Badges ────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: 20px;
  padding: 2px 9px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
}
.badge-outline {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-mid);
  font-weight: 500;
}
.badge-anomaly { background: var(--danger); }
.badge-tou { background: var(--app-primary); }

/* ── Chips ─────────────────────────────────────────────────── */
.chip-bar { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0 4px; align-items: center; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  cursor: pointer;
  font-size: 12px;
  color: var(--text-mid);
  user-select: none;
  font-family: var(--font);
  transition: all .12s;
}
.chip:hover { border-color: var(--gold); color: var(--text-dark); }
.chip.active { background: var(--gold); border-color: var(--gold); color: var(--navy); font-weight: 600; }

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,15,32,.55);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px 12px;
  z-index: 100;
  overflow-y: auto;
}
.modal {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 680px;
  padding: 20px;
  margin: auto 0;
}
.modal-header { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; }
.modal-header h2 { font-size: 16px; margin: 0; flex: 1; }
.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-mid);
  padding: 2px;
  display: flex;
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }

/* ── Tables ────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th {
  text-align: left;
  padding: 9px 12px;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-mid);
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}
table.data td { padding: 9px 12px; border-bottom: 1px solid var(--card-border); vertical-align: top; }
table.data tr:last-child td { border-bottom: none; }
table.data tr.clickable { cursor: pointer; }
table.data tr.clickable:hover td { background: var(--body-bg); }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr.total-row td { font-weight: 700; background: var(--body-bg); border-top: 2px solid var(--card-border); }
table.data tr.subtotal-row td { font-weight: 600; background: var(--body-bg); border-top: 1px solid var(--card-border); }
table.data tr.anomaly-row td { background: var(--danger-bg); }

/* ── Stats strip ───────────────────────────────────────────── */
.stats-strip { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.stat-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 10px 16px;
  min-width: 110px;
}
.stat-box .stat-value { font-size: 18px; font-weight: 700; }
.stat-box .stat-label { font-size: 11px; color: var(--text-mid); text-transform: uppercase; letter-spacing: .04em; }

/* ── Settings ──────────────────────────────────────────────── */
.settings-section { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius); margin-bottom: 20px; overflow: hidden; }
.settings-section-header { padding: 14px 20px; border-bottom: 1px solid var(--card-border); font-weight: 600; font-size: 15px; }
.settings-section-body { padding: 16px 20px; }
.settings-row { display: flex; align-items: center; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--card-border); }
.settings-row:last-child { border-bottom: none; }
.settings-label { flex: 1; font-size: 13px; }

/* ── Misc ──────────────────────────────────────────────────── */
.empty-state { text-align: center; color: var(--text-mid); padding: 40px 16px; font-size: 13.5px; }
.error-banner {
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 13px;
}
.info-banner {
  background: var(--warn-bg);
  border: 1px solid var(--gold);
  color: var(--text-dark);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 13px;
}
.section-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-mid); margin: 18px 0 8px; }
.muted { color: var(--text-mid); }
.loading-state { text-align: center; color: var(--text-mid); padding: 40px 16px; font-size: 13.5px; }

/* Sidebar scrollbar */
.nav-scroll::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.nav-scroll::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.nav-scroll::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(201,168,76,0.35); border-radius: 2px; }
.nav-scroll::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover,
.sidebar-nav::-webkit-scrollbar-thumb:hover { background: rgba(201,168,76,0.65); }
.nav-scroll, .sidebar, .sidebar-nav { scrollbar-width: thin; scrollbar-color: rgba(201,168,76,0.35) transparent; }