:root {
  --base: #14171A;
  --surface: #1E2226;
  --surface-raised: #24282D;
  --hairline: #2C3136;
  --text: #E8E6E1;
  --text-muted: #8B9198;
  --signal: #3DD68C;
  --signal-dim: #2A6B4C;
  --warning: #E0A63D;
  --alert: #E2574C;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--base);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 72px; /* room for mobile bottom nav */
}

a { color: inherit; text-decoration: none; }

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--base);
  border-bottom: 1px solid var(--hairline);
  padding: 14px 16px;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 960px;
  margin: 0 auto;
}

.brand {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal);
  white-space: nowrap;
  text-transform: uppercase;
}

.brand span { color: var(--text-muted); }

.search-wrap {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: var(--sans);
}

.search-input:focus {
  outline: none;
  border-color: var(--signal-dim);
}

.search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--surface-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  display: none;
  max-height: 320px;
  overflow-y: auto;
  z-index: 30;
}

.search-results.open { display: block; }

.search-result-item {
  display: block;
  padding: 10px 12px;
  border-bottom: 1px solid var(--hairline);
  font-size: 14px;
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--surface); }

.search-result-item .addr {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---------- Layout ---------- */

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}

.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 12px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 4px;
}

/* ---------- Bottom nav (mobile-first) ---------- */

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--hairline);
  z-index: 20;
}

.bottom-nav a {
  flex: 1;
  text-align: center;
  padding: 10px 4px 8px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.bottom-nav a.active { color: var(--signal); }

.bottom-nav .icon {
  display: block;
  font-size: 18px;
  margin-bottom: 2px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-raised);
  border: 1px solid var(--hairline);
  color: var(--text);
  padding: 9px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--sans);
  cursor: pointer;
}

.btn:hover { border-color: var(--signal-dim); }

.btn-primary {
  background: var(--signal-dim);
  border-color: var(--signal-dim);
  color: #E8FFF3;
}

.btn-primary:hover { background: var(--signal); color: #0B1410; }

.btn-danger { color: var(--alert); }
.btn-danger:hover { border-color: var(--alert); }

.btn-sm { padding: 6px 10px; font-size: 12.5px; }

/* ---------- Cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

@media (min-width: 560px) {
  .stat-row { grid-template-columns: repeat(3, 1fr); }
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 14px;
}

.stat-value {
  font-family: var(--mono);
  font-size: 26px;
  color: var(--signal);
  display: block;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Site tag / signature element ---------- */

.site-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--hairline);
}

.site-row:last-child { border-bottom: none; }

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  flex-shrink: 0;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface-raised);
  border: 1px solid var(--hairline);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

.site-row-main { flex: 1; min-width: 0; }

.site-row-name {
  font-weight: 500;
  font-size: 15px;
}

.site-row-addr {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Forms ---------- */

label {
  display: block;
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
  margin-top: 14px;
}

label:first-child { margin-top: 0; }

input[type=text], input[type=password], input[type=email], input[type=tel], textarea, select {
  width: 100%;
  background: var(--surface-raised);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-size: 15px;
  font-family: var(--sans);
}

textarea { resize: vertical; min-height: 70px; }

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--signal-dim);
}

.form-actions {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}

/* ---------- Tabs (site detail) ---------- */

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 16px;
  overflow-x: auto;
}

.tab {
  padding: 10px 14px;
  font-size: 13.5px;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
}

.tab.active { color: var(--signal); border-bottom-color: var(--signal); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- Equipment / credential rows ---------- */

.item-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
}

.item-row:last-child { border-bottom: none; }

.item-meta { font-size: 12.5px; color: var(--text-muted); font-family: var(--mono); margin-top: 2px; }

.reveal-btn {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  background: none;
  border: 1px dashed var(--hairline);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
}

.reveal-btn.shown { color: var(--warning); border-color: var(--warning); }

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-state .icon { font-size: 32px; display: block; margin-bottom: 10px; }

/* ---------- Flash messages ---------- */

.flash {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid;
}

.flash-error { background: rgba(226, 87, 76, 0.1); border-color: var(--alert); color: #FFB4AC; }
.flash-success { background: rgba(61, 214, 140, 0.1); border-color: var(--signal); color: var(--signal); }

/* ---------- Login page ---------- */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 340px;
}

.login-brand {
  text-align: center;
  margin-bottom: 24px;
}

.login-brand .brand {
  font-size: 16px;
}

.login-brand .sub {
  color: var(--text-muted);
  font-size: 12.5px;
  margin-top: 6px;
}

/* ---------- Desktop nav (hidden on mobile) ---------- */

.desktop-nav { display: none; }

@media (min-width: 720px) {
  body { padding-bottom: 0; }
  .bottom-nav { display: none; }
  .desktop-nav {
    display: flex;
    gap: 4px;
    margin-left: 20px;
  }
  .desktop-nav a {
    padding: 8px 12px;
    font-size: 13.5px;
    color: var(--text-muted);
    border-radius: var(--radius);
  }
  .desktop-nav a.active, .desktop-nav a:hover { color: var(--text); background: var(--surface); }
}