:root {
  --navy: #1b3358;
  --navy-dark: #12233d;
  --gold: #c9a13b;
  --cream: #fdf6ea;
  --cream-dark: #f5ead2;
  --green: #1e7a46;
  --red: #b23b3b;
  --grey: #6b7280;
  --border: #e2e0d8;
  --bg: #f7f5f0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: #24303f;
}

button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }

.hidden { display: none !important; }

/* ---------- Paywall ---------- */
#paywall-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 16px 64px;
}

.paywall-header {
  text-align: center;
  max-width: 640px;
  margin-bottom: 32px;
}

.paywall-header h1 {
  color: var(--navy);
  font-size: 1.9rem;
  margin-bottom: 8px;
}

.paywall-header p {
  color: var(--grey);
  line-height: 1.5;
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(240px, 300px));
  gap: 20px;
  max-width: 980px;
  width: 100%;
}

@media (max-width: 860px) {
  .plans { grid-template-columns: 1fr; justify-items: center; }
}

.plan-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 10px rgba(20, 30, 50, 0.06);
  position: relative;
}

.plan-card.featured {
  border: 2px solid var(--gold);
}

.plan-badge {
  position: absolute;
  top: -12px;
  right: 16px;
  background: var(--gold);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.plan-card h3 {
  color: var(--navy);
  margin: 4px 0 4px;
}

.plan-price {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--navy-dark);
  margin: 8px 0 0;
}

.plan-price span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--grey);
}

.plan-sub {
  font-size: 0.8rem;
  color: var(--green);
  font-weight: 600;
  min-height: 18px;
  margin-bottom: 8px;
}

.plan-card ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 20px;
  font-size: 0.9rem;
  color: #3a4657;
  flex-grow: 1;
}

.plan-card ul li {
  padding: 4px 0 4px 20px;
  position: relative;
}

.plan-card ul li::before {
  content: "✓";
  color: var(--green);
  position: absolute;
  left: 0;
  font-weight: 700;
}

.paypal-btn-container { min-height: 45px; }

.paywall-footer {
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--grey);
  text-align: center;
}

.paywall-footer a { color: var(--navy); }

/* ---------- App shell ---------- */
#app-screen {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: var(--navy);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.topbar h1 {
  font-size: 1.15rem;
  margin: 0;
  font-weight: 700;
}
.topbar .sub { color: #cdd6e4; font-size: 0.75rem; }

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.topbar select, .topbar button {
  background: var(--navy-dark);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.85rem;
}

.tabs {
  display: flex;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 12px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--grey);
  border-bottom: 3px solid transparent;
}

.tab-btn.active {
  color: var(--navy);
  border-bottom-color: var(--gold);
}

.tab-panel { display: none; padding: 20px; flex: 1; }
.tab-panel.active { display: block; }

/* ---------- Tracker table ---------- */
.tracker-wrap {
  overflow-x: auto;
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
}

table.tracker {
  border-collapse: collapse;
  width: 100%;
  min-width: 1100px;
  font-size: 0.85rem;
}

table.tracker th, table.tracker td {
  padding: 6px 8px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.tracker th:first-child, table.tracker td:first-child {
  text-align: left;
  position: sticky;
  left: 0;
  background: #fff;
  min-width: 220px;
  z-index: 1;
}

table.tracker thead th {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 2;
}
table.tracker thead th:first-child { z-index: 3; }

tr.section-header td {
  background: var(--navy-dark);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-align: left;
}

tr.section-total td {
  background: #eef1f6;
  font-weight: 700;
}

tr.grand-total td {
  background: var(--gold);
  color: #fff;
  font-weight: 800;
  font-size: 0.95rem;
}

tr.grand-total.negative td { background: var(--red); }

td input.cell-input {
  width: 78px;
  border: 1px solid var(--cream-dark);
  background: var(--cream);
  border-radius: 4px;
  padding: 4px 6px;
  text-align: right;
  font-size: 0.85rem;
}
td input.cell-input:focus { outline: 2px solid var(--gold); background: #fff; }

input.item-name {
  border: none;
  background: transparent;
  font-size: 0.85rem;
  width: 100%;
  min-width: 180px;
  font-family: inherit;
}
input.item-name:focus { outline: 1px solid var(--gold); background: var(--cream); }

.remove-item-btn {
  border: none;
  background: none;
  color: var(--red);
  font-size: 0.9rem;
  padding: 0 4px;
  visibility: hidden;
}
tr:hover .remove-item-btn { visibility: visible; }

.add-item-row td {
  text-align: left;
  padding: 6px 8px 10px;
}
.add-item-btn {
  border: 1px dashed var(--navy);
  background: none;
  color: var(--navy);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.8rem;
}

.legend {
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--grey);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: center;
}
.legend .swatch {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 3px;
  margin-right: 4px;
  vertical-align: middle;
}
.legend .swatch.editable { background: var(--cream); border: 1px solid var(--cream-dark); }
.legend .swatch.formula { background: #eef1f6; border: 1px solid var(--border); }

.toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.toolbar button {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 0.82rem;
  color: var(--navy);
  font-weight: 600;
}
.toolbar button:hover { border-color: var(--navy); }

/* ---------- Dashboard ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.card {
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 16px;
  text-align: center;
}

.card .label {
  font-size: 0.75rem;
  color: var(--grey);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.card .value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--navy);
  margin-top: 6px;
}

.card.negative .value { color: var(--red); }

.charts-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 16px;
}
@media (max-width: 860px) { .charts-grid { grid-template-columns: 1fr; } }

.chart-card {
  background: #fff;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 16px;
}
.chart-card h3 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 1rem;
}
.chart-card canvas { max-height: 320px; }

.install-banner {
  background: var(--cream);
  border: 1px solid var(--cream-dark);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.82rem;
  color: #4a3c1c;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.install-banner button {
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

@media print {
  .topbar, .tabs, .toolbar, .install-banner { display: none !important; }
  .tab-panel { display: block !important; }
}