/* RUG Revenue Report - styles
   Internal reporting tool, so the design priority is legibility and
   density over visual flourish. Dark navy + cream, plain sans for
   numbers, a single accent colour reserved for variance highlighting.
*/

:root {
  --navy: #1b2436;
  --navy-light: #2a3551;
  --cream: #f7f5f0;
  --ink: #1b2436;
  --muted: #6b7280;
  --border: #e3e1da;
  --accent: #3c6e71;
  --negative: #b3434a;
  --positive: #2f7a4f;
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-size: 14px;
  line-height: 1.5;
}

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

h1 {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
  color: var(--navy);
}

h2 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 4px 0;
  color: var(--navy);
}

.panel-sub {
  color: var(--muted);
  margin: 0 0 20px 0;
  font-size: 13px;
}

/* Login screen */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
}

.login-box {
  background: var(--cream);
  padding: 40px;
  border-radius: var(--radius);
  width: 100%;
  max-width: 360px;
  text-align: center;
}

.login-sub {
  color: var(--muted);
  font-size: 13px;
  margin: 8px 0 24px 0;
}

#login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#password-input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}

#password-input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.login-error {
  color: var(--negative);
  font-size: 13px;
  margin-top: 12px;
}

/* App shell */
.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.generated-at {
  font-size: 12px;
  color: var(--muted);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  background: none;
  border: none;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

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

.tab-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

/* Tables */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  background: var(--navy);
  color: var(--cream);
  text-align: left;
  padding: 10px 14px;
  font-weight: 600;
  white-space: nowrap;
}

th.num, td.num {
  text-align: right;
}

tbody td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:nth-child(even) {
  background: #fbfaf7;
}

.variance-negative { color: var(--negative); font-weight: 600; }
.variance-positive { color: var(--positive); font-weight: 600; }

/* KPI grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.kpi-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.kpi-label {
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 6px 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
}

/* Buttons + inputs */
.btn-secondary {
  background: var(--navy);
  color: var(--cream);
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary:hover { background: var(--navy-light); }

.btn-secondary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-icon {
  background: none;
  border: none;
  color: var(--negative);
  cursor: pointer;
  font-size: 13px;
}

input[type="month"], input[type="number"] {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
  width: 140px;
}

#add-budget-row {
  margin-top: 12px;
}

.save-status {
  margin-top: 10px;
  font-size: 13px;
  color: var(--positive);
  min-height: 18px;
}

@media (max-width: 640px) {
  .topbar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .tabs { flex-wrap: wrap; }
}