:root {
  --bg: #f5f3eb;
  --surface: rgba(255, 255, 255, 0.90);
  --surface-solid: #fffdfa;
  --surface-alt: #f6f1e4;
  --surface-warm: rgba(250, 247, 238, 0.92);
  --text: #171715;
  --muted: #6e695f;
  --border: #ddd5c2;
  --border-strong: #bfb39a;
  --accent: #e9a900;
  --accent-hover: #d39700;
  --accent-soft: #fff2bd;
  --danger: #a83b32;
  --danger-bg: #fde8e3;
  --warning-bg: #f4b0a8;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  isolation: isolate;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.5;
  background: transparent;
}

/* Very faint YellowSunny artwork behind the entire planner. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(245, 243, 235, 0.93), rgba(245, 243, 235, 0.93)),
    url("../assets/Yellowsunny.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.wrap { max-width: 1180px; margin: 0 auto; padding: 24px 18px 48px; }
.top-nav { margin-bottom: 18px; }
.home-link { color: #8a6500; text-decoration: none; font-weight: 700; }
.home-link:hover { color: var(--accent-hover); text-decoration: underline; }
.page-header { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 22px; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.035em; }
h2 { margin: 8px 0 4px; font-size: 1.05rem; }
.subtitle { margin: 5px 0 0; color: var(--muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  box-shadow: 0 10px 28px rgba(65, 54, 27, 0.07);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}
summary {
  cursor: pointer;
  font-weight: 780;
  padding: 14px 16px;
  background: rgba(246, 241, 228, 0.94);
  border-bottom: 1px solid var(--border);
}
.panel { padding: 16px; display: grid; gap: 13px; }
.prose p { margin: 0; }
.prose ul { margin-top: 4px; }

.form-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px 14px; }
.span-2 { grid-column: 1 / -1; }
label { display: grid; gap: 5px; font-weight: 650; }
label span, legend { font-size: .92rem; }
.label-with-info, .heading-with-info { display: inline-flex; align-items: center; gap: 6px; }
.info-tip {
  width: 17px;
  height: 17px;
  border: 1px solid #a89d85;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
  color: #655c49;
  background: rgba(255,255,255,.55);
  cursor: help;
  vertical-align: middle;
  user-select: none;
}

input, select {
  width: 100%;
  min-width: 96px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,.94);
  color: var(--text);
  font: inherit;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(233,169,0,.20);
}

.radio-fieldset { margin: 0; padding: 10px 12px 12px; border: 1px solid var(--border); border-radius: 9px; background: rgba(255,255,255,.34); }
.radio-fieldset legend { padding: 0 5px; font-weight: 650; }
.radio-group { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.radio-option { display: inline-flex; grid-template-columns: none; flex-direction: row; align-items: center; gap: 6px; font-size: .92rem; font-weight: 550; }
.radio-option input { width: auto; min-width: 0; margin: 0; accent-color: var(--accent-hover); }
.flat-tax-rate { max-width: 360px; }
.hidden { display: none !important; }

.controls, .run-row, .section-heading { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.section-heading { justify-content: space-between; margin-top: 2px; }
.input-group {
  border: 2px solid var(--border-strong);
  border-radius: 11px;
  padding: 10px;
  background: var(--surface-warm);
  display: grid;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(65,54,27,.045);
}
.assumptions-group { padding: 12px; }
.input-group .section-heading { margin: 0; }
.input-group .section-heading h2 { margin: 0; }
.input-group .input-table-wrap { border-color: var(--border); }
.run-row { margin-top: 5px; }
.status { color: var(--muted); font-size: .94rem; }
.status.error { color: var(--danger); font-weight: 650; }

.btn {
  appearance: none;
  border: 1px solid #c99a16;
  border-radius: 9px;
  background: rgba(255,255,255,.86);
  color: #765700;
  padding: 9px 13px;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  transition: background 120ms ease, transform 120ms ease, border-color 120ms ease;
}
.btn:hover { background: var(--accent-soft); border-color: var(--accent-hover); }
.btn.primary { background: var(--accent); color: #17130a; border-color: #c69000; }
.btn.primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn:focus-visible { outline: 3px solid rgba(233,169,0,.32); outline-offset: 2px; }

.row-actions { display: flex; gap: 4px; align-items: center; white-space: nowrap; }
.btn.icon { width: 29px; height: 29px; padding: 0; display: inline-flex; align-items: center; justify-content: center; font-size: 1.15rem; line-height: 1; border-radius: 7px; }
.btn.delete { border-color: #dfb3a9; color: var(--danger); background: #fffaf8; }
.btn.delete:hover { background: var(--danger-bg); }
.btn.add { border-color: #d0aa3d; color: #765700; background: #fffdf5; }
.btn.add:hover { background: var(--accent-soft); }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: rgba(255,255,255,.82); }
.input-table-wrap { border: 1px solid var(--border-strong); box-shadow: inset 0 0 0 1px rgba(118,102,65,.05); }
table { width: 100%; border-collapse: collapse; background: rgba(255,255,255,.91); }
th { text-align: left; background: var(--surface-alt); font-size: .87rem; }
th, td { padding: 8px 9px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.input-table th, .input-table td { padding: 5px 6px; }
.input-table input, .input-table select { padding: 6px 7px; border-radius: 6px; font-size: .91rem; }
.input-table th:last-child, .input-table td:last-child { width: 74px; }
tbody tr:last-child td { border-bottom: 0; }

.worksheet-table td:nth-child(n+3) { font-variant-numeric: tabular-nums; text-align: right; }
.worksheet-table th:nth-child(n+3) { text-align: right; }
.negative { background: var(--danger-bg); }
.negative-strong { background: var(--warning-bg); }
.empty-row { color: var(--muted); text-align: center !important; padding: 24px; }
.money-input { text-align: right; font-variant-numeric: tabular-nums; }

/* Scrollable projection worksheet with frozen column headers. */
.worksheet-wrap {
  max-height: 560px;
  overflow: auto;
  position: relative;
}
.worksheet-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: #eee5cf;
  box-shadow: 0 1px 0 var(--border-strong);
}

@media (max-width:720px) {
  .wrap { padding: 16px 10px 36px; }
  .form-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .page-header { align-items: start; }
  .radio-group { display: grid; gap: 8px; }
  body::before { background-position: center top; }
}