/* Shared styles for all Instant Receipts GitHub Pages tools */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand-yellow: #FFC50F;
  --brand-yellow-light: #FDE7B3;
  --brand-green: #63A361;
  --brand-brown: #5B532C;
  --brand-brown-80: rgba(91,83,44,0.8);
  --brand-brown-70: rgba(91,83,44,0.7);
  --brand-brown-60: rgba(91,83,44,0.6);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--brand-brown);
  background: #fff;
  line-height: 1.6;
}

a { color: var(--brand-green); text-decoration: none; }
a:hover { color: var(--brand-brown); text-decoration: underline; }

/* ---- Nav ---- */
.site-nav {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-nav .inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.site-nav .brand {
  font-weight: 700;
  font-size: 15px;
  color: var(--brand-brown);
  text-decoration: none;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-nav .brand:hover { color: var(--brand-green); text-decoration: none; }
.site-nav .brand img {
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  max-width: 28px;
  max-height: 28px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}
.site-nav .nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  list-style: none;
}
.site-nav .nav-links a {
  font-size: 13px;
  color: var(--brand-brown-80);
  white-space: nowrap;
}
.site-nav .nav-links a:hover { color: var(--brand-green); }

/* ---- Hero ---- */
.hero {
  background: linear-gradient(135deg, rgba(253,231,179,0.3) 0%, #fff 50%, rgba(99,163,97,0.05) 100%);
  padding: 40px 20px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: rgba(255,197,15,0.12);
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.hero .inner { max-width: 900px; margin: 0 auto; position: relative; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); font-weight: 700; margin-bottom: 16px; line-height: 1.2; }
.hero .subtitle { font-size: 18px; color: var(--brand-brown-80); max-width: 640px; margin-bottom: 32px; line-height: 1.6; }

/* ---- Calculator card ---- */
.calc-card {
  background: rgba(253,231,179,0.4);
  border: 1.5px solid var(--brand-yellow);
  border-radius: 12px;
  padding: 24px;
  max-width: 600px;
}
.calc-card h2 { font-size: 18px; font-weight: 600; margin-bottom: 4px; }
.calc-card .hint { font-size: 13px; color: var(--brand-brown-70); margin-bottom: 20px; }

/* ---- Form controls ---- */
.field-row { margin-bottom: 16px; }
.field-row label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.input-wrap { position: relative; }
.input-wrap .prefix {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  font-size: 14px; color: var(--brand-brown-60); pointer-events: none;
}
input[type=number], input[type=text], select {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--brand-yellow);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--brand-brown);
  outline: none;
  appearance: none;
}
.input-wrap input[type=number] { padding-left: 28px; }
input:focus, select:focus { border-color: var(--brand-green); box-shadow: 0 0 0 3px rgba(99,163,97,0.15); }
.row2 { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.row3 { display: grid; grid-template-columns: 1fr 120px 150px; gap: 12px; }
@media (max-width: 540px) {
  .row2, .row3 { grid-template-columns: 1fr; }
}
.field-small label { font-size: 14px; font-weight: 500; margin-bottom: 6px; display: block; }

/* ---- Result box ---- */
.result-box {
  background: #fff;
  border: 1.5px solid rgba(255,197,15,0.6);
  border-radius: 8px;
  padding: 16px;
  margin-top: 4px;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 14px;
  padding: 4px 0;
}
.result-row .label { color: var(--brand-brown-80); }
.result-row .value { font-weight: 500; }
.result-row .value-green { font-weight: 500; color: var(--brand-green); }
.result-row.total { font-weight: 700; font-size: 15px; border-top: 1px solid rgba(255,197,15,0.4); padding-top: 10px; margin-top: 6px; }
.result-note { font-size: 12px; color: var(--brand-brown-70); margin-top: 8px; }

/* ---- Section divider ---- */
.section { padding: 60px 20px; }
.section.bg-gray { background: #f9fafb; }
.section .inner { max-width: 700px; margin: 0 auto; }
.section h2 { font-size: clamp(20px, 3vw, 28px); font-weight: 700; margin-bottom: 16px; }
.section h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.section p { color: var(--brand-brown-80); margin-bottom: 16px; line-height: 1.7; }
.section p:last-child { margin-bottom: 0; }

/* ---- Example box ---- */
.example-box {
  border: 2px solid rgba(99,163,97,0.3);
  background: rgba(99,163,97,0.05);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 32px;
}
.example-box .example-inner {
  background: #fff;
  border: 1px solid rgba(99,163,97,0.3);
  border-radius: 8px;
  padding: 16px;
  margin-top: 12px;
}

/* ---- Data table ---- */
.data-table-wrap { border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; margin-bottom: 32px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table thead { background: rgba(253,231,179,0.4); }
.data-table th { padding: 12px 16px; font-weight: 600; text-align: left; }
.data-table td { padding: 12px 16px; border-top: 1px solid #f3f4f6; color: var(--brand-brown-80); }

/* ---- CTA inline ---- */
.cta-inline {
  border: 1px solid rgba(99,163,97,0.3);
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.cta-inline .text { flex: 1; min-width: 200px; }
.cta-inline .text strong { display: block; margin-bottom: 4px; }
.cta-inline .text p { font-size: 14px; color: var(--brand-brown-70); margin: 0; }
.btn-green {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--brand-green);
  color: #fff;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-green:hover { background: #4e8a4c; color: #fff; text-decoration: none; }
.btn-yellow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-yellow);
  color: var(--brand-brown);
  padding: 14px 32px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-yellow:hover { background: #e8b10e; color: var(--brand-brown); text-decoration: none; }

/* ---- FAQ ---- */
.faq-list { list-style: none; }
.faq-item {
  background: #fff;
  border: 2px solid #e5e7eb;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 12px;
  transition: border-color 0.15s;
}
.faq-item.open { border-color: var(--brand-yellow); }
.faq-btn {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-brown);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-btn:hover { color: var(--brand-green); }
.faq-chevron { flex-shrink: 0; transition: transform 0.2s; width: 20px; height: 20px; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer { padding: 0 24px 20px; font-size: 14px; color: var(--brand-brown-80); line-height: 1.7; display: none; }
.faq-item.open .faq-answer { display: block; }

/* ---- CTA section ---- */
.cta-section { padding: 60px 20px; background: #f9fafb; }
.cta-section .inner { max-width: 700px; margin: 0 auto; }
.cta-box {
  background: linear-gradient(135deg, rgba(255,197,15,0.15), rgba(99,163,97,0.1));
  border: 2px solid rgba(255,197,15,0.3);
  border-radius: 24px;
  padding: 48px 32px;
  text-align: center;
}
.cta-box h2 { font-size: clamp(20px, 3vw, 28px); font-weight: 700; margin-bottom: 12px; }
.cta-box p { color: var(--brand-brown-80); max-width: 480px; margin: 0 auto 24px; }
.cta-box .sub { font-size: 13px; color: var(--brand-brown-70); margin-top: 16px; margin-bottom: 0; }

/* ---- Related links ---- */
.related-links { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.related-links a {
  font-size: 13px;
  background: rgba(253,231,179,0.5);
  border: 1px solid var(--brand-yellow);
  border-radius: 20px;
  padding: 5px 14px;
  color: var(--brand-brown);
  text-decoration: none;
}
.related-links a:hover { background: var(--brand-yellow); }

/* ---- Footer ---- */
.site-footer {
  background: #f9fafb;
  border-top: 1px solid #e5e7eb;
  padding: 32px 20px;
  text-align: center;
  font-size: 13px;
  color: var(--brand-brown-70);
}
.site-footer a { color: var(--brand-green); }
.site-footer a:hover { color: var(--brand-brown); }
.site-footer .footer-links { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }

/* ---- Index page cards ---- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.tool-card {
  border: 1.5px solid #e5e7eb;
  border-radius: 16px;
  padding: 24px;
  background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: var(--brand-brown);
  display: block;
}
.tool-card:hover {
  border-color: var(--brand-green);
  box-shadow: 0 4px 16px rgba(99,163,97,0.12);
  text-decoration: none;
  color: var(--brand-brown);
}
.tool-card .icon { font-size: 28px; margin-bottom: 12px; }
.tool-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.tool-card p { font-size: 13px; color: var(--brand-brown-70); line-height: 1.5; }

/* Compare section */
.compare-card {
  border: 2px solid rgba(255,197,15,0.4);
  background: rgba(255,197,15,0.1);
  border-radius: 12px;
  padding: 16px;
  margin-top: 20px;
}
.compare-card h3 { font-size: 15px; margin-bottom: 4px; }
.compare-card .hint { font-size: 13px; color: var(--brand-brown-70); margin-bottom: 16px; }

/* Utility */
.hidden { display: none !important; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
hr.divider { border: none; border-top: 1px solid rgba(255,197,15,0.4); margin: 10px 0; }

/* Results breakdown table */
.breakdown { width: 100%; }
.breakdown td { padding: 5px 0; font-size: 14px; }
.breakdown td:last-child { text-align: right; font-weight: 500; }
.breakdown .sub { color: var(--brand-brown-70); }
.breakdown .positive { color: var(--brand-green); }
.breakdown .total-row td { font-weight: 700; font-size: 15px; border-top: 1px solid #e5e7eb; padding-top: 12px; }

.highlight-box {
  background: rgba(99,163,97,0.1);
  border-radius: 12px;
  padding: 16px;
  margin-top: 12px;
}
.highlight-box .hl-row { display: flex; justify-content: space-between; align-items: baseline; }
.highlight-box .hl-label { font-weight: 700; }
.highlight-box .hl-value { font-weight: 700; color: var(--brand-green); font-size: 18px; }
.highlight-box .hl-note { font-size: 12px; color: var(--brand-brown-70); margin-top: 6px; }

.warning-box {
  background: #FBEFDC;
  border-radius: 8px;
  padding: 12px;
  margin-top: 12px;
  font-size: 13px;
  color: #96631A;
}

/* Year toggle buttons */
.toggle-group { display: flex; gap: 8px; flex-wrap: wrap; }
.toggle-btn {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid var(--brand-yellow);
  background: #fff;
  color: var(--brand-brown);
  transition: all 0.15s;
}
.toggle-btn.active { background: var(--brand-green); color: #fff; border-color: var(--brand-green); }
.toggle-btn:hover:not(.active) { background: rgba(253,231,179,0.5); }