/* ==========================================================================
   BillMaker Pro — billmakerpro.online
   Design language: "ledger & receipt" — ink covers, paper pages,
   monospace receipt typography, green PAID / red DUE stamps.
   ========================================================================== */

:root {
  --paper:        #FAF6EC;
  --paper-2:      #F1EBDC;
  --line:         rgba(19, 27, 48, 0.12);
  --line-strong:  rgba(19, 27, 48, 0.22);
  --ink:          #131B30;
  --ink-2:        #1F2D4D;
  --muted:        #6E7892;
  --paper-muted:  rgba(250, 246, 236, 0.65);
  --green:        #1A8754;
  --green-soft:   #E4F3EA;
  --red:          #D6483F;
  --red-soft:     #FBE7E5;

  --font-mono: 'Space Mono', 'Courier New', monospace;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1140px;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Visually hidden, but available to assistive tech */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ----------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--green);
  color: var(--paper);
  box-shadow: 0 8px 20px -8px rgba(26, 135, 84, 0.7);
}
.btn-primary:hover { box-shadow: 0 12px 24px -8px rgba(26, 135, 84, 0.8); }

.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(250, 246, 236, 0.35);
}
.btn-ghost:hover { border-color: var(--paper); background: rgba(250,246,236,0.06); }

.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-outline:hover { border-color: var(--ink); background: var(--paper-2); }

.btn-block { width: 100%; justify-content: center; }

/* ------------------------------- Header ---------------------------------- */

.site-header {
  background: var(--ink);
  color: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(250,246,236,0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
}

.brand-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  display: grid; place-items: center;
  background: var(--green);
  color: var(--ink);
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.brand-name span { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: rgba(250,246,236,0.78);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--paper); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(250,246,236,0.3);
  border-radius: 8px;
  width: 42px; height: 42px;
  color: var(--paper);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* -------------------------------- Hero ------------------------------------ */

.hero {
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(250,246,236,0.07) 1px, transparent 0);
  background-size: 26px 26px;
  opacity: 0.5;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  padding: 84px 0 96px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--green);
  display: inline-block;
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 4.4vw, 3.6rem);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}
.hero h1 em {
  font-style: normal;
  color: var(--green);
}

.hero p.lead {
  font-size: 1.08rem;
  color: rgba(250,246,236,0.75);
  max-width: 480px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.hero-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: rgba(250,246,236,0.55);
}
.hero-meta strong { color: var(--paper); display: block; font-size: 1.15rem; }

/* ---------------------------- Receipt mockup ------------------------------ */

.receipt-wrap {
  display: flex;
  justify-content: center;
  position: relative;
}

.receipt {
  background: var(--paper);
  color: var(--ink);
  width: 100%;
  max-width: 380px;
  border-radius: 6px;
  padding: 28px 26px 30px;
  position: relative;
  transform: rotate(2.5deg);
  box-shadow: 0 30px 70px -25px rgba(0,0,0,0.55);
  font-family: var(--font-mono);
}

.receipt::before,
.receipt::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 14px;
  background:
    radial-gradient(circle at 10px 7px, transparent 7px, var(--ink) 7.5px) ,
    radial-gradient(circle at 30px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 50px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 70px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 90px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 110px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 130px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 150px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 170px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 190px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 210px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 230px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 250px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 270px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 290px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 310px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 330px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 350px 7px, transparent 7px, var(--ink) 7.5px),
    radial-gradient(circle at 370px 7px, transparent 7px, var(--ink) 7.5px);
  background-color: transparent;
}
.receipt::before { top: -7px; }
.receipt::after  { bottom: -7px; transform: rotate(180deg); }

.receipt-head {
  text-align: center;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-strong);
  margin-bottom: 14px;
}
.receipt-head .logo-row {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 6px;
}
.receipt-head .logo-row .brand-mark { width: 26px; height: 26px; border-radius: 6px; }
.receipt-head strong { font-size: 1rem; letter-spacing: 0.04em; }
.receipt-head small { display: block; color: var(--muted); font-size: 0.72rem; margin-top: 4px; letter-spacing: 0.06em; }

.receipt-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  padding: 7px 0;
  border-bottom: 1px dotted var(--line);
}
.receipt-line:last-of-type { border-bottom: none; }
.receipt-line .item { display: flex; gap: 8px; align-items: flex-start; }
.receipt-line .tick {
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}
.receipt-line .amt { color: var(--muted); white-space: nowrap; }

.receipt-total {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.95rem;
  font-weight: 700;
}
.receipt-total span:last-child { color: var(--green); }

.receipt-foot {
  margin-top: 16px;
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.stamp {
  position: absolute;
  top: 38%;
  right: -18px;
  width: 96px;
  height: 96px;
  border: 3px solid var(--green);
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--green);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  transform: rotate(-18deg);
  background: rgba(228, 243, 234, 0.9);
  line-height: 1.25;
}

/* ------------------------------ Sections ---------------------------------- */

section { padding: 88px 0; }

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 14px;
}

.section-head h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ------------------------------ Features ---------------------------------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-row {
  background: var(--paper);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-row .num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--green);
  letter-spacing: 0.12em;
}

.feature-row h3 {
  font-size: 1.08rem;
  font-weight: 700;
}

.feature-row p { color: var(--muted); font-size: 0.94rem; }

/* ------------------------------ Audience ----------------------------------- */

.audience-band {
  background: var(--paper-2);
}

.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 10px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper);
}

/* ------------------------------ Benefits ------------------------------------ */

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.benefit-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.benefit-item .check {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green);
  display: grid; place-items: center;
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* ------------------------------ Screenshots --------------------------------- */

.screens-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.phone {
  background: var(--ink);
  border-radius: 28px;
  padding: 14px;
  box-shadow: 0 24px 50px -24px rgba(19,27,48,0.45);
}

.phone-screen {
  background: var(--paper);
  border-radius: 18px;
  aspect-ratio: 9 / 18;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

.phone-screen .bar {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 14px 10px;
}

.phone-screen .body { padding: 14px; flex: 1; display: flex; flex-direction: column; gap: 8px; }

.phone-screen .row {
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.66rem;
  font-family: var(--font-mono);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.phone-screen .bigblock {
  flex: 1;
  border-radius: 10px;
  background: var(--green-soft);
  display: grid;
  place-items: center;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-align: center;
  letter-spacing: 0.05em;
  padding: 12px;
}

.screen-caption {
  margin-top: 14px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.screens-note {
  margin-top: 28px;
  font-size: 0.9rem;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 16px 20px;
}

/* -------------------------------- CTA band ----------------------------------- */

.cta-band {
  background: var(--ink);
  color: var(--paper);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-inner h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  max-width: 520px;
}

.cta-inner p { color: rgba(250,246,236,0.6); margin-top: 10px; max-width: 480px; }

/* -------------------------------- Footer ------------------------------------ */

.site-footer {
  background: var(--ink);
  color: rgba(250,246,236,0.7);
  border-top: 1px solid rgba(250,246,236,0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 64px 0 40px;
}

.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: 16px;
}

.footer-grid ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-grid a { text-decoration: none; font-size: 0.92rem; color: rgba(250,246,236,0.65); }
.footer-grid a:hover { color: var(--green); }

.footer-brand p { font-size: 0.92rem; max-width: 320px; color: rgba(250,246,236,0.55); margin-top: 14px; }

.footer-bottom {
  border-top: 1px solid rgba(250,246,236,0.08);
  padding: 22px 0 36px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(250,246,236,0.45);
}

/* -------------------------------- Legal pages -------------------------------- */

.legal-hero {
  background: var(--ink);
  color: var(--paper);
  padding: 64px 0;
}
.legal-hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}
.legal-hero p { color: rgba(250,246,236,0.6); margin-top: 10px; font-family: var(--font-mono); font-size: 0.85rem; }

.legal-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.legal-content h2 {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  margin: 40px 0 14px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.legal-content h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.legal-content p, .legal-content li { color: var(--ink-2); margin-bottom: 12px; }
.legal-content ul { padding-left: 22px; margin-bottom: 16px; }
.legal-content a { color: var(--green); text-decoration: underline; }

.legal-note {
  background: var(--red-soft);
  border: 1px solid var(--red);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.92rem;
  margin-bottom: 32px;
}
.legal-note strong { color: var(--red); display: block; margin-bottom: 4px; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }

/* -------------------------------- Support page -------------------------------- */

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 14px;
}
.faq-item h3 { font-size: 1.02rem; margin-bottom: 8px; }
.faq-item p { color: var(--muted); }

.contact-card {
  background: var(--paper-2);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.contact-card .item h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 6px;
}
.contact-card .item p { color: var(--ink-2); margin: 0; }

/* -------------------------------- Responsive ---------------------------------- */

@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; padding: 56px 0 64px; }
  .receipt-wrap { order: -1; }
  .receipt { transform: rotate(0deg); max-width: 340px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links {
    display: flex;
    position: absolute;
    top: 78px; left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    padding: 20px 24px 28px;
    gap: 18px;
    border-bottom: 1px solid rgba(250,246,236,0.08);
  }
  section { padding: 64px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; padding: 48px 0 30px; }
  .cta-inner { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}