/* FutureForward Budget — clean, professional, desktop-first.
   Month banners / totals follow the FY26/27 Excel:
   blue banner ~#2F5597, dark-blue totals ~#1F3864 with white text. */

:root {
  --blue-banner: #2f5597;
  --blue-dark: #1f3864;
  --blue-light: #d9e2f3;
  --blue-mid: #8ea9db;
  --ink: #1a1a1a;
  --muted: #5a6472;
  --border: #d0d7e2;
  --row-alt: #f4f6fa;
  --row-hover: #eaf0fa;
  --danger: #b3261e;
  --success: #1e7d32;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: #f2f4f8;
  font-size: 14px;
  line-height: 1.45;
}

.hidden { display: none !important; }
.spacer { flex: 1; }
.hint { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
a { color: var(--blue-banner); }

/* ---------- Buttons / inputs ---------- */
.btn {
  font: inherit;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: #eef2f8; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--blue-banner); border-color: var(--blue-banner); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: #fdecea; }
.btn-ghost { background: transparent; border-color: transparent; color: #dbe4f5; }
.btn-ghost:hover { background: rgba(255,255,255,.14); color: #fff; }
.btn-block { width: 100%; padding: 10px; margin-top: 6px; }

input, select {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--blue-mid); outline-offset: 0; border-color: var(--blue-banner); }
label { display: block; font-weight: 600; margin: 12px 0 4px; font-size: 13px; }
input[type="number"] { text-align: right; }

/* ---------- Login / invite-accept ---------- */
.login-card {
  max-width: 420px;
  margin: 12vh auto 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 32px 28px;
  box-shadow: 0 4px 24px rgba(31, 56, 100, .12);
}
.login-card h1 { margin: 0 0 4px; color: var(--blue-dark); font-size: 24px; }
.login-sub { color: var(--muted); margin: 0 0 8px; }
.login-back { text-align: center; margin-top: 16px; }
.login-note {
  background: #eaf0fa;
  border: 1px solid var(--blue-mid);
  border-radius: 6px;
  padding: 10px 12px;
  margin: 12px 0 0;
  font-size: 13px;
}
#loginCode { letter-spacing: .35em; font-size: 18px; }
.login-actions { text-align: center; margin-top: 16px; }
.login-actions-sep { color: var(--muted); margin: 0 4px; }
.link-btn {
  border: none;
  background: none;
  font: inherit;
  color: var(--blue-banner);
  cursor: pointer;
  padding: 0;
}
.link-btn:hover { text-decoration: underline; }
.link-btn:disabled { opacity: .55; cursor: not-allowed; }
.form-error {
  background: #fdecea;
  color: var(--danger);
  border: 1px solid #f5c6c2;
  border-radius: 6px;
  padding: 8px 10px;
  margin-top: 12px;
  font-size: 13px;
}
.error-banner {
  background: #fdecea;
  color: var(--danger);
  border-bottom: 1px solid #f5c6c2;
  padding: 10px 20px;
  font-size: 13px;
}
.toast {
  position: fixed;
  top: 64px;
  right: 20px;
  z-index: 60;
  background: var(--success);
  color: #fff;
  padding: 10px 16px;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
  max-width: 420px;
}

/* ---------- Top bar / tabs ---------- */
.topbar {
  background: var(--blue-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 20px;
  flex-wrap: wrap;
}
.brand { font-size: 18px; font-weight: 700; letter-spacing: .2px; }
.topbar-right { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.user-info { color: #dbe4f5; margin-right: 8px; font-size: 13px; }

.tabs {
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 20px;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 20;
}
.year-tabs { display: flex; gap: 2px; }
.year-tab {
  border: none;
  background: none;
  font: inherit;
  font-weight: 600;
  color: var(--muted);
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 3px solid transparent;
}
.year-tab:hover { color: var(--blue-dark); }
.year-tab.active { color: var(--blue-dark); border-bottom-color: var(--blue-banner); }
.tabs-right { display: flex; align-items: center; gap: 12px; padding: 6px 0; }
.sub-tabs { display: flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.sub-tab {
  border: none;
  background: #fff;
  font: inherit;
  padding: 7px 16px;
  cursor: pointer;
  color: var(--muted);
}
.sub-tab.active { background: var(--blue-banner); color: #fff; }

main { padding: 20px; max-width: 1560px; margin: 0 auto; }
main h2 { color: var(--blue-dark); margin-top: 0; }

/* ---------- Sales: monthly sections ---------- */
.month-section { margin-bottom: 28px; }
.month-banner {
  background: var(--blue-banner);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 8px 14px;
  border-radius: 6px 6px 0 0;
}
.table-scroll { overflow-x: auto; background: #fff; border: 1px solid var(--border); border-radius: 0 0 6px 6px; }
.sales-table, .cashflow-table { border-collapse: collapse; width: 100%; min-width: 1400px; background: #fff; }
.sales-table th, .sales-table td,
.cashflow-table th, .cashflow-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  font-size: 13px;
  text-align: left;
  white-space: nowrap;
}
.sales-table thead th {
  background: var(--blue-light);
  color: var(--blue-dark);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 5;
}
.sales-table tbody tr:nth-child(even) { background: var(--row-alt); }
.sales-table tbody tr.detail-row { cursor: pointer; }
.sales-table tbody tr.detail-row:hover { background: var(--row-hover); }
.sales-table td.num, .sales-table th.num,
.cashflow-table td.num, .cashflow-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.sales-table tr.totals-row td {
  background: var(--blue-dark);
  color: #fff;
  font-weight: 700;
  border-color: var(--blue-dark);
}
.sales-table tr.totals-row td:first-child { text-align: left; }
.add-sale-btn { margin-top: 10px; }
.empty-month { color: var(--muted); font-style: italic; }

/* ---------- Cashflow ---------- */
.cashflow-table { min-width: 900px; }
.cashflow-table thead th {
  background: var(--blue-light);
  color: var(--blue-dark);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 5;
}
.cashflow-table tbody tr:nth-child(even) { background: var(--row-alt); }
.cashflow-table tr.total-row td {
  background: var(--blue-dark);
  color: #fff;
  font-weight: 700;
  border-color: var(--blue-dark);
}
.cashflow-table input {
  border: 1px solid transparent;
  background: transparent;
  padding: 4px 6px;
  border-radius: 4px;
  min-width: 84px;
}
.cashflow-table input:hover { border-color: var(--border); background: #fff; }
.cashflow-table input:focus { border-color: var(--blue-banner); background: #fff; }
.cashflow-table input.amount-input { text-align: right; }
.cashflow-table input.expense-input { min-width: 180px; text-align: left; font-weight: 600; }
.cashflow-table input.due-input { min-width: 130px; }
.cashflow-table input.saving { background: #fff8e1; }
.add-expense-form {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.add-expense-form input[type="text"] { max-width: 320px; }
.add-expense-form input[type="date"] { max-width: 180px; }
.inline-label { margin: 0; font-weight: 600; }
.row-delete {
  border: none; background: none; color: var(--danger);
  cursor: pointer; font: inherit; padding: 4px 6px; border-radius: 4px;
}
.row-delete:hover { background: #fdecea; }

/* ---------- Users ---------- */
.users-table { border-collapse: collapse; width: 100%; background: #fff; }
.users-table th, .users-table td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
.users-table thead th { background: var(--blue-light); color: var(--blue-dark); }

/* ---------- Modals ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(15, 30, 60, .55);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
  z-index: 50;
}
.modal {
  background: #fff;
  border-radius: 12px;
  padding: 24px 28px;
  width: 100%;
  max-width: 760px;
  box-shadow: 0 8px 40px rgba(0,0,0,.25);
}
.modal-small { max-width: 460px; }
.modal h2 { margin: 0 0 8px; color: var(--blue-dark); }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}
.field-wide { grid-column: 1 / -1; }
.modal-actions { display: flex; gap: 8px; margin-top: 20px; justify-content: flex-end; align-items: center; }
.invite-result { background: #eaf0fa; border: 1px solid var(--blue-mid); border-radius: 6px; padding: 10px 12px; margin-top: 12px; }
.invite-result p { margin: 0 0 4px; }

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  main { padding: 12px; }
  .tabs { padding: 0 12px; }
}