/* ============================================
   TallyTools — Shared Styles
   Ledger / receipt inspired utility tools
   ============================================ */

:root {
  --ink: #16241F;
  --ink-soft: #3A4A42;
  --paper: #FBF8F1;
  --paper-dim: #F1ECDF;
  --signal: #2E7D5B;
  --signal-dark: #1F5C42;
  --coral: #E2725B;
  --sage: #A8BCA8;
  --sage-line: #C9D6C5;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  --radius: 6px;
  --shadow-card: 0 1px 0 rgba(22,36,31,0.06), 0 8px 24px -8px rgba(22,36,31,0.18);
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--signal-dark); text-decoration: underline; text-decoration-color: var(--sage); text-underline-offset: 3px; }
a:hover { color: var(--coral); }

img { max-width: 100%; display: block; }

/* ---------- Layout shell ---------- */
.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--sage-line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.brand:hover { color: var(--ink); }
.brand .dot { color: var(--coral); }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink-soft);
  text-decoration: none;
}
.nav-links a:hover { color: var(--coral); }
.nav-links a.active { color: var(--signal-dark); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  border-bottom: 1px dashed var(--sage-line);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal-dark);
  display: inline-block;
  margin-bottom: 14px;
}
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  line-height: 1.05;
  margin: 0 0 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 0 0;
}

/* ---------- Tool card grid (homepage) ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 48px 0 64px;
}
@media (max-width: 720px) {
  .tool-grid { grid-template-columns: 1fr; }
}
.tool-card {
  background: #fff;
  border: 1px solid var(--sage-line);
  border-radius: var(--radius);
  padding: 32px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  position: relative;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-card);
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(22,36,31,0.06), 0 16px 32px -10px rgba(22,36,31,0.24);
}
.tool-card .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--coral);
  display: block;
  margin-bottom: 10px;
}
.tool-card h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 10px;
  font-weight: 600;
}
.tool-card p {
  color: var(--ink-soft);
  margin: 0;
  font-size: 0.97rem;
}
.tool-card .go {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal-dark);
}

/* ---------- Calculator section ---------- */
.calc-section {
  padding: 48px 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 800px) {
  .calc-section { grid-template-columns: 1fr; }
}

.calc-form {
  background: #fff;
  border: 1px solid var(--sage-line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
.field { margin-bottom: 22px; }
.field:last-child { margin-bottom: 0; }
label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
input[type="number"], input[type="text"], select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  padding: 12px 14px;
  border: 1.5px solid var(--sage-line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  transition: border-color 0.15s ease;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(46,125,91,0.12);
}
.field-row { display: flex; gap: 14px; }
.field-row .field { flex: 1; }

.split-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.stepper {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--sage-line);
  border-radius: 4px;
  overflow: hidden;
}
.stepper button {
  width: 40px;
  height: 44px;
  border: none;
  background: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--ink);
}
.stepper button:hover { background: var(--sage-line); }
.stepper input {
  border: none;
  text-align: center;
  width: 56px;
  font-size: 1.15rem;
}
.stepper input:focus { box-shadow: none; outline: none; }

.pct-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.pct-buttons button {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 8px 14px;
  border: 1.5px solid var(--sage-line);
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.12s ease;
}
.pct-buttons button:hover { border-color: var(--signal); color: var(--signal-dark); }
.pct-buttons button.active {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
}

/* ---------- Receipt result card (the signature element) ---------- */
.receipt {
  background: #fff;
  border: 1px solid var(--sage-line);
  border-radius: var(--radius);
  padding: 0;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 96px;
}
.receipt-head {
  padding: 22px 28px 18px;
  border-bottom: 1px dashed var(--sage-line);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.receipt-head .label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.receipt-head .stamp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--coral);
  border: 1px solid var(--coral);
  padding: 2px 8px;
  border-radius: 20px;
  transform: rotate(-2deg);
}
.receipt-line {
  display: flex;
  justify-content: space-between;
  padding: 14px 28px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--paper-dim);
}
.receipt-line .k { color: var(--ink-soft); }
.receipt-line .v { color: var(--ink); font-weight: 500; }
.receipt-total {
  padding: 24px 28px 28px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.receipt-total .k {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
}
.receipt-total .v {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--signal-dark);
  letter-spacing: -0.02em;
}
.receipt-foot {
  border-top: 1px dashed var(--sage-line);
  padding: 16px 28px 22px;
}
.per-person-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.per-person-row .k { color: var(--ink-soft); }
.per-person-row .v { font-weight: 600; color: var(--ink); }

/* zigzag receipt bottom edge */
.receipt::after {
  content: "";
  display: block;
  height: 14px;
  background: linear-gradient(135deg, var(--paper) 50%, transparent 50%) 0 0/14px 14px repeat-x,
              linear-gradient(45deg, var(--paper) 50%, transparent 50%) 0 100%/14px 14px repeat-x;
  margin-top: -1px;
}

/* ---------- Content / FAQ sections ---------- */
.content-section {
  padding: 40px 0;
  border-top: 1px solid var(--sage-line);
}
.content-section h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  margin: 0 0 16px;
}
.content-section h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 28px 0 8px;
}
.content-section p { color: var(--ink-soft); max-width: 680px; }

.faq-item {
  border-bottom: 1px solid var(--paper-dim);
  padding: 20px 0;
}
.faq-item summary {
  font-family: var(--font-body);
  font-weight: 600;
  cursor: pointer;
  font-size: 1.02rem;
  color: var(--ink);
}
.faq-item p {
  margin: 12px 0 0;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--sage-line);
  padding: 32px 0 48px;
  margin-top: 24px;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- Ad slot placeholders ---------- */
.ad-slot {
  border: 1px dashed var(--sage-line);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--sage);
  margin: 32px 0;
  background: var(--paper-dim);
}

/* ---------- Utility ---------- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}