:root {
  --ink: #1c2b2d;
  --paper: #eef2ee;
  --pine: #2f5d50;
  --pine-dark: #1f4038;
  --brass: #b8894a;
  --line: #c9d3c8;
  --error: #b3452c;
  --card: #fffdf9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  font-family: "Iowan Old Style", "Georgia", "Times New Roman", serif;
  color: var(--ink);
}

.page-header {
  padding: 32px 24px 20px;
  text-align: center;
  background: var(--pine);
  color: #fff;
}
.page-header h1 { margin: 0 0 6px; font-size: 28px; }
.page-header .subtitle { margin: 0; color: #d7e6dd; font-size: 14.5px; }

.layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 22px 24px;
  margin-bottom: 20px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.03);
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 17px;
  color: var(--pine-dark);
  display: flex;
  align-items: center;
  gap: 6px;
}
.panel h3 { margin: 0 0 14px; font-size: 15.5px; color: var(--pine-dark); }

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px 20px;
}

.field label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: "Courier New", monospace;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pine-dark);
  margin-bottom: 6px;
}

input[type="number"], select {
  width: 100%;
  padding: 9px 10px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid #b9c4bd;
  border-radius: 3px;
  outline: none;
}
input[type="number"]:focus, select:focus {
  border-color: var(--pine);
  box-shadow: 0 0 0 3px rgba(47,93,80,0.15);
}

.input-prefix, .input-suffix {
  display: flex;
  align-items: center;
  border: 1px solid #b9c4bd;
  border-radius: 3px;
  background: #fff;
  overflow: hidden;
}
.input-prefix:focus-within, .input-suffix:focus-within {
  border-color: var(--pine);
  box-shadow: 0 0 0 3px rgba(47,93,80,0.15);
}
.input-prefix input, .input-suffix input {
  border: none;
  box-shadow: none !important;
  flex: 1;
}
.prefix, .suffix {
  padding: 0 10px;
  color: #6b7a73;
  font-size: 13px;
  background: #f2f5f1;
  align-self: stretch;
  display: flex;
  align-items: center;
}

/* Tooltip */
.tooltip-wrap { position: relative; display: inline-flex; }
.tooltip-icon {
  width: 15px; height: 15px;
  border-radius: 50%;
  background: #2f6fb8;
  color: #fff;
  font-size: 10px;
  font-family: Georgia, serif;
  font-style: italic;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: help;
}
.tooltip-text {
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 8px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-family: Georgia, serif;
  text-transform: none;
  letter-spacing: normal;
  width: 220px;
  z-index: 20;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease;
}
.tooltip-wrap:hover .tooltip-text,
.tooltip-icon:focus + .tooltip-text {
  opacity: 1;
}

/* SS table */
.ss-table { width: 100%; border-collapse: collapse; }
.ss-table th, .ss-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
}
.ss-table th { font-family: "Courier New", monospace; font-size: 11px; text-transform: uppercase; color: var(--pine-dark); }
.ss-table .input-prefix { max-width: 160px; }

/* Expense blocks */
.expense-block {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}
.expense-block label {
  font-family: "Courier New", monospace;
  font-size: 10px;
  text-transform: uppercase;
  color: var(--pine-dark);
  display: block;
  margin-bottom: 5px;
}
.remove-block-btn {
  background: transparent;
  border: 1px solid var(--error);
  color: var(--error);
  border-radius: 3px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 13px;
}
.remove-block-btn:hover { background: rgba(179,69,44,0.08); }

.secondary-btn {
  background: transparent;
  border: 1px solid var(--pine);
  color: var(--pine);
  border-radius: 3px;
  padding: 9px 16px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
}
.secondary-btn:hover { background: rgba(47,93,80,0.08); }

.button-row { display: flex; gap: 12px; margin: 24px 0; }
#calc-btn {
  flex: 2;
  background: var(--brass);
  border: 1px solid var(--brass);
  color: #fff;
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
}
#calc-btn:hover { background: #a67a3f; }
#reset-btn {
  flex: 1;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
}
#reset-btn:hover { border-color: var(--pine); color: var(--pine); }

.error-box {
  background: #fbeae5;
  border: 1px solid var(--error);
  color: var(--error);
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 13.5px;
  white-space: pre-line;
}

/* Results */
.results h2 { color: var(--pine-dark); }
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.summary-card {
  background: var(--pine);
  color: #fff;
  border-radius: 5px;
  padding: 16px;
}
.summary-card .label {
  font-family: "Courier New", monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d7e6dd;
  margin-bottom: 6px;
}
.summary-card .value { font-size: 21px; font-weight: 700; }
.summary-card.negative { background: var(--error); }
.summary-card.negative .label { color: #f7d9d0; }

.table-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}
.table-scroll {
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
}
#projection-table {
  border-collapse: collapse;
  width: 100%;
  font-size: 12.5px;
  white-space: nowrap;
}
#projection-table th, #projection-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: right;
}
#projection-table td:first-child, #projection-table th:first-child { text-align: left; }
#projection-table thead th {
  position: sticky;
  top: 0;
  background: var(--pine);
  color: #fff;
  font-family: "Courier New", monospace;
  font-size: 10.5px;
  text-transform: uppercase;
  z-index: 5;
}
#projection-table tbody tr:nth-child(even) { background: #f5f8f4; }

@media (max-width: 640px) {
  .expense-block { grid-template-columns: 1fr 1fr; }
}

/* Login page */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--paper);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 36px 32px;
  box-shadow: 0 12px 30px -18px rgba(31,64,56,0.35);
}
.login-card .eyebrow {
  margin: 0 0 6px;
  font-family: "Courier New", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pine);
}
.login-card h1 { margin: 0 0 8px; font-size: 24px; }
.login-card .subtitle { margin: 0 0 22px; font-size: 14px; color: #56645f; }
.login-card label {
  display: block;
  font-family: "Courier New", monospace;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pine-dark);
  margin-bottom: 6px;
}
.login-card input[type="password"] { margin-bottom: 6px; }
.login-card .error { color: var(--error); font-size: 13px; margin: 8px 0 0; }
.login-card button {
  width: 100%;
  margin-top: 18px;
  background: var(--brass);
  border: 1px solid var(--brass);
  color: #fff;
  padding: 12px 16px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
}
.login-card button:hover { background: #a67a3f; }

/* Top-right logout link */
.session-bar {
  max-width: 1080px;
  margin: 0 auto;
  padding: 10px 20px 0;
  display: flex;
  justify-content: flex-end;
}
.session-bar a {
  font-family: "Courier New", monospace;
  font-size: 12px;
  color: var(--pine-dark);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 3px;
}
.session-bar a:hover { border-color: var(--pine); color: var(--pine); }