:root {
  --bg: #f8f9fa;
  --card: #fff;
  --border: #e2e8f0;
  --text: #1a202c;
  --muted: #64748b;
  --accent: #4f46e5;
  --accent-light: #eef2ff;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #ea580c;
  --blue: #2563eb;
  --yellow: #ca8a04;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 13px;
}

.hidden { display: none !important; }

/* ===== Auth Screen ===== */
.auth-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.auth-card {
  background: var(--card);
  padding: 3rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
  max-width: 400px;
  width: 90%;
}

.auth-card h1 { font-size: 20px; margin-bottom: 4px; }
.auth-subtitle { color: var(--muted); font-size: 13px; margin-bottom: 2rem; }
#google-signin-btn { display: flex; justify-content: center; margin: 1.5rem 0; }
.auth-note { font-size: 12px; color: var(--muted); }

/* ===== Header ===== */
.header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.header-left h1 { font-size: 18px; font-weight: 700; }
.header-left .meta { color: var(--muted); font-size: 12px; margin-top: 2px; }

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--muted);
}

.header-right .user-email { font-weight: 500; color: var(--text); }

.btn-signout {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all .15s;
}
.btn-signout:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Nav Strip ===== */
.nav-strip {
  display: flex;
  gap: 0;
  padding: 12px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  align-items: stretch;
}

.nav-strip-home {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-width: 44px;
  cursor: pointer;
  border-radius: 8px;
  margin-right: 10px;
  transition: all .15s;
  color: var(--muted);
  border: 1px solid var(--border);
}
.nav-strip-home:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-light); }
.nav-strip-home.active { color: var(--accent); border-color: var(--accent); background: var(--accent-light); }

.nav-strip-cards {
  display: flex;
  gap: 8px;
  flex: 1;
}

.nav-strip-card {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all .15s;
  flex: 1;
  min-width: 0;
  background: #f1f5f9;
}
.nav-strip-card:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(79,70,229,.08); }
.nav-strip-card.active { border-color: var(--accent); background: var(--accent-light); }

.nav-strip-card .nsc-icon { font-size: 20px; line-height: 1; flex-shrink: 0; margin-top: 1px; }
.nav-strip-card .nsc-title { font-weight: 600; font-size: 12px; white-space: nowrap; }
.nav-strip-card .nsc-desc { font-size: 10px; color: var(--muted); line-height: 1.3; margin-top: 2px; }

/* ===== Container ===== */
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 16px 24px;
}

/* ===== Cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.card .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 2px; }
.card .value { font-size: 24px; font-weight: 700; }
.card .sub { font-size: 11px; color: var(--muted); margin-top: 2px; }

/* ===== Tables ===== */
.scroll-table {
  overflow-x: auto;
  border-radius: 8px;
  margin-bottom: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 12px;
}

th {
  background: #f1f5f9;
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .3px;
  color: var(--muted);
  position: sticky;
  top: 0;
  white-space: nowrap;
}

td { padding: 6px 10px; border-top: 1px solid var(--border); }
tr:hover td { background: #f8fafc; }

.pct { color: var(--accent); font-weight: 600; }
.good { color: var(--green); font-weight: 600; }
.warn { color: var(--orange); font-weight: 600; }
.bad { color: var(--red); font-weight: 600; }
.zero { color: #cbd5e1; }
.totals-row td { font-weight: 700; background: #f1f5f9 !important; border-top: 2px solid var(--border); }

/* ===== Throughput Stage Cells ===== */
.stage-hdr { background: #e8edf5 !important; text-align: center !important; border-left: 2px solid var(--border); }
.stage-sub { text-align: center !important; font-size: 10px !important; }
td.stage-cell { text-align: center; border-left: 1px solid #f1f5f9; }
td.stage-first { border-left: 2px solid var(--border); }

/* ===== Filter Bar ===== */
.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-bar input,
.filter-bar select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  background: var(--card);
}

.filter-bar input:focus,
.filter-bar select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(79,70,229,.1);
}

/* ===== Headings ===== */
h2 { font-size: 15px; font-weight: 600; margin-bottom: 12px; }
h3 { font-size: 13px; font-weight: 600; margin: 16px 0 10px; color: var(--muted); }

/* ===== Metric Grid ===== */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.metric-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.metric-box h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px solid #f1f5f9;
}
.metric-row:last-child { border: none; }
.metric-label { color: var(--text); }
.metric-val { font-weight: 600; }

/* ===== Source Bar ===== */
.source-bar {
  height: 28px;
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  margin: 8px 0;
}

.source-bar div {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
}

/* ===== Misc ===== */
.sub-note { color: var(--muted); font-size: 11px; margin: 6px 0 14px; }
hr.section-divider { border: none; border-top: 2px solid var(--border); margin: 28px 0; }

.chart-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 20px;
  position: relative;
}
.chart-wrap canvas { max-height: 300px; }

.page-content { animation: fadeIn .2s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Admin Styles ===== */
.admin-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}

.admin-section h3 { margin: 0 0 10px; }

.form-row {
  display: flex;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label { font-size: 11px; color: var(--muted); font-weight: 500; }
.form-group input,
.form-group select { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 12px; }

.btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: none;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #3730a3; }
.btn-danger { background: var(--red); color: #fff; }
.btn-sm { padding: 3px 8px; font-size: 11px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

.nav-card:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(79,70,229,.1); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .container { padding: 10px; }
  .metric-grid { grid-template-columns: 1fr; }
  .header { padding: 10px 16px; }
  .tabs { padding: 0 16px; }
  .tab { padding: 8px 12px; font-size: 12px; }
}