:root {
  --bg-page: #f5f0e8;
  --bg-card: #ffffff;
  --bg-dark: #16110d;
  --bg-dark-elevated: #231b15;
  --text-main: #18130f;
  --text-muted: #65594d;
  --text-light: #f9f5ee;
  --gold: #c59b49;
  --gold-dark: #9e782f;
  --gold-soft: #f6eedb;
  --green: #1e6b43;
  --green-soft: #e3f4ea;
  --amber: #b86b11;
  --amber-soft: #fef1dc;
  --red: #b92b27;
  --red-soft: #fde8e8;
  --border: #e2d9c8;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow: 0 4px 16px rgba(22, 17, 13, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.45;
  padding-bottom: 84px; /* Space for mobile bottom nav */
  -webkit-font-smoothing: antialiased;
}

/* Header & Operator Bar */
.app-header {
  background: var(--bg-dark);
  color: var(--text-light);
  border-bottom: 2px solid var(--gold);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--gold);
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #fff;
  display: block;
}

.brand-subtitle {
  font-size: 0.74rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.user-select {
  background: var(--bg-dark-elevated);
  color: #fff;
  border: 1px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.38rem 0.7rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}

.status-pill.online {
  background: rgba(30, 107, 67, 0.28);
  color: #6ee7a8;
  border: 1px solid #2b8a57;
}

.status-pill.offline {
  background: rgba(185, 43, 39, 0.3);
  color: #fca5a5;
  border: 1px solid #ef4444;
}

.sync-btn {
  background: var(--gold);
  color: var(--bg-dark);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.42rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}

/* Main Container */
.main-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem;
}

/* Desktop Top Tabs + Mobile Bottom Bar */
.nav-tabs {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-dark);
  border-top: 2px solid var(--gold);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  z-index: 100;
}

.nav-tab-btn {
  background: transparent;
  color: #b7aba0;
  border: none;
  padding: 0.55rem 0.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  font-size: 0.68rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}

.nav-tab-btn .tab-icon {
  font-size: 1.2rem;
}

.nav-tab-btn.active {
  color: var(--gold);
  background: rgba(197, 155, 73, 0.14);
}

@media (min-width: 900px) {
  body {
    padding-bottom: 2rem;
  }
  .nav-tabs {
    position: static;
    max-width: 1280px;
    margin: 1rem auto 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: hidden;
  }
  .nav-tab-btn {
    flex-direction: row;
    font-size: 0.88rem;
    padding: 0.85rem 1rem;
    gap: 0.5rem;
  }
}

/* Views */
.tab-view {
  display: none;
}

.tab-view.active {
  display: block;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}

.kpi-card.green { border-left-color: var(--green); }
.kpi-card.red { border-left-color: var(--red); }
.kpi-card.amber { border-left-color: var(--amber); }

.kpi-label {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 700;
}

.kpi-value {
  font-size: 1.45rem;
  font-weight: 800;
  margin-top: 0.2rem;
  font-family: var(--font-mono);
}

.kpi-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Cards & Grids */
.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 960px) {
  .section-grid.two-col {
    grid-template-columns: 430px 1fr;
    align-items: start;
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
}

.card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Sub-navigation Pills */
.sub-pills {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.sub-pill-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}

.sub-pill-btn.active {
  background: var(--bg-dark);
  color: var(--gold);
  border-color: var(--gold);
}

/* Forms — High-contrast field inputs */
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.7rem 0.8rem;
  font-size: 0.96rem;
  border: 1.5px solid #cbbba0;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text-main);
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--gold-dark);
  box-shadow: 0 0 0 3px rgba(197, 155, 73, 0.22);
}

.form-control.mono {
  font-family: var(--font-mono);
  font-weight: 700;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.8rem;
  background: var(--gold-soft);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 0.86rem;
  font-weight: 700;
}

.checkbox-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--bg-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.85rem 1.2rem;
  font-size: 0.96rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  width: 100%;
  transition: transform 0.1s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.99);
}

.btn-primary {
  background: var(--bg-dark);
  color: var(--gold);
  border: 1.5px solid var(--gold);
}

.btn-gold {
  background: var(--gold);
  color: var(--bg-dark);
}

.btn-green {
  background: var(--green);
  color: #fff;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  width: auto;
}

/* Badges & Tags */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.badge-green { background: var(--green-soft); color: var(--green); }
.badge-amber { background: var(--amber-soft); color: var(--amber); }
.badge-red { background: var(--red-soft); color: var(--red); }
.badge-gold { background: var(--gold-soft); color: var(--gold-dark); }

/* Responsive Tables */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

th, td {
  padding: 0.65rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: #faf6f0;
  font-weight: 800;
}

.mono {
  font-family: var(--font-mono);
}

/* Alert Box */
.alert-banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.86rem;
  font-weight: 700;
  display: none;
}

.alert-banner.show {
  display: block;
}

.alert-banner.success {
  background: var(--green-soft);
  color: var(--green);
  border: 1px solid #95d5b2;
}

.alert-banner.error {
  background: var(--red-soft);
  color: var(--red);
  border: 1px solid #f8b4b4;
}

/* Score Selector Buttons (Bunk Slick 0-4, Temperament 1-5, Panting 0-4) */
.score-btn-group {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
}

.score-btn {
  padding: 0.6rem 0.25rem;
  border: 1.5px solid var(--border);
  background: #fff;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.82rem;
  text-align: center;
  cursor: pointer;
}

.score-btn.selected {
  background: var(--bg-dark);
  color: var(--gold);
  border-color: var(--gold);
}


/* =========================================================================
   AUTHENTICATION LOCK SCREEN & SECURITY MODAL
   ========================================================================= */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top, #271e17 0%, #120e0b 100%);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.auth-overlay.hidden {
  display: none;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: #ffffff;
  border: 2px solid var(--gold);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65);
}

.auth-logo-wrap {
  text-align: center;
  margin-bottom: 1.2rem;
}

.auth-logo {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  object-fit: cover;
  margin-bottom: 0.5rem;
}

.auth-mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  background: var(--bg-page);
  padding: 0.3rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.auth-mode-btn {
  border: none;
  background: transparent;
  padding: 0.55rem;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
}

.auth-mode-btn.active {
  background: var(--bg-dark);
  color: var(--gold);
}

.user-badge-pill {
  background: var(--bg-dark-elevated);
  border: 1px solid var(--gold);
  color: #fff;
  padding: 0.38rem 0.7rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
}

.header-btn {
  background: transparent;
  color: var(--text-light);
  border: 1px solid rgba(197, 155, 73, 0.6);
  border-radius: var(--radius-sm);
  padding: 0.38rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
}

.header-btn:hover {
  background: rgba(197, 155, 73, 0.2);
}

/* Security Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(18, 14, 11, 0.78);
  z-index: 5000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-y: auto;
}

.modal-backdrop.open {
  display: flex;
}

.modal-card {
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-card);
  border: 2px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
}