/* ============================================================
   BillEase — shared styles
   Demo invoicing app · Designed & built by Pavan Rengade
   ============================================================ */

:root {
  --accent: #5b5bd6;
  --accent-dark: #4747b8;
  --accent-light: #eeeefc;
  --ink: #1a1a2e;
  --ink-soft: #55556b;
  --ink-faint: #8b8ba3;
  --surface: #ffffff;
  --bg: #f6f7fb;
  --border: #e4e5ef;
  --success: #1d9b6c;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.07);
  --shadow-md: 0 6px 24px rgba(26, 26, 46, 0.09);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.13);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Demo ribbon ---------- */
.demo-ribbon {
  background: linear-gradient(90deg, #2b2b52, #3d3d7a);
  color: #dcdcf5;
  text-align: center;
  font-size: 0.82rem;
  padding: 8px 16px;
  letter-spacing: 0.01em;
}
.demo-ribbon a { color: #fff; font-weight: 600; text-decoration: underline; }

/* ---------- Nav ---------- */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand .brand-mark { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--ink-soft); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 9px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
  text-align: center;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(91, 91, 214, 0.35);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: var(--border);
}
.btn-ghost:hover { color: #c0392b; border-color: #c0392b; }
.btn-lg { font-size: 1.05rem; padding: 14px 30px; border-radius: 11px; }
.btn-block { display: block; width: 100%; }

/* ---------- Landing: hero ---------- */
.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 24px 56px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.lead {
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin-bottom: 28px;
  max-width: 46ch;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-note { font-size: 0.85rem; color: var(--ink-faint); margin-top: 14px; }

/* ---------- Landing: invoice mock ---------- */
.mock-wrap { position: relative; }
.mock-invoice {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 26px 28px;
  font-size: 0.78rem;
  transform: rotate(1.2deg);
}
.mock-invoice .m-head { display: flex; justify-content: space-between; margin-bottom: 16px; }
.mock-invoice .m-biz { font-weight: 700; font-size: 0.95rem; }
.mock-invoice .m-biz small { display: block; font-weight: 400; color: var(--ink-faint); }
.mock-invoice .m-tag {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
}
.mock-invoice table { width: 100%; border-collapse: collapse; margin: 12px 0; }
.mock-invoice th {
  text-align: left; font-size: 0.68rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--ink-faint);
  border-bottom: 1px solid var(--border); padding: 5px 4px;
}
.mock-invoice td { padding: 6px 4px; border-bottom: 1px solid #f0f0f7; }
.mock-invoice td:last-child, .mock-invoice th:last-child { text-align: right; }
.mock-invoice .m-totals { margin-left: auto; width: 60%; }
.mock-invoice .m-totals div { display: flex; justify-content: space-between; padding: 3px 4px; color: var(--ink-soft); }
.mock-invoice .m-totals .m-grand {
  font-weight: 800; color: var(--ink); font-size: 0.95rem;
  border-top: 2px solid var(--ink); margin-top: 5px; padding-top: 7px;
}
.mock-chip {
  position: absolute;
  bottom: -16px;
  left: -14px;
  background: var(--success);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow-md);
}

/* ---------- Landing: sections ---------- */
.section { max-width: 1080px; margin: 0 auto; padding: 56px 24px; }
.section-title {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 10px;
}
.section-sub {
  text-align: center;
  color: var(--ink-soft);
  margin-bottom: 42px;
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
}
.step-num {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-weight: 800;
  border-radius: 10px;
  margin-bottom: 14px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 6px; }
.step p { color: var(--ink-soft); font-size: 0.92rem; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s, transform 0.15s;
}
.feature:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature .f-icon { font-size: 1.5rem; margin-bottom: 10px; }
.feature h3 { font-size: 1rem; margin-bottom: 5px; }
.feature p { color: var(--ink-soft); font-size: 0.9rem; }

.testimonial {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 36px;
}
.testimonial blockquote { font-size: 1.08rem; line-height: 1.7; margin-bottom: 16px; }
.testimonial cite { font-style: normal; color: var(--ink-soft); font-size: 0.9rem; }
.testimonial cite strong { color: var(--ink); }

.cta-band {
  background: linear-gradient(120deg, var(--accent), #7c5bd6);
  border-radius: 18px;
  text-align: center;
  padding: 52px 32px;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; }
.cta-band p { color: #e6e6ff; margin-bottom: 26px; }
.cta-band .btn { background: #fff; color: var(--accent-dark); }
.cta-band .btn:hover { background: #f0f0ff; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
  padding: 26px 20px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 40px;
}

/* ============================================================
   APP (app.html)
   ============================================================ */
.app-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 56px;
  display: grid;
  grid-template-columns: minmax(340px, 460px) 1fr;
  gap: 30px;
  align-items: start;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 22px;
  margin-bottom: 20px;
}
.panel h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent-dark);
  margin-bottom: 14px;
}

.field { margin-bottom: 12px; }
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.field input, .field textarea, .field select {
  width: 100%;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--ink);
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfbfe;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 91, 214, 0.15);
  background: #fff;
}
.field textarea { resize: vertical; min-height: 64px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.field .hint { font-size: 0.75rem; color: var(--ink-faint); font-weight: 400; }

/* Line item rows */
.item-row {
  display: grid;
  grid-template-columns: 1fr 64px 96px 30px;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}
.item-row input {
  width: 100%;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfbfe;
}
.item-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 91, 214, 0.15);
  background: #fff;
}
.item-row input[type="number"] { text-align: right; }
.item-head {
  display: grid;
  grid-template-columns: 1fr 64px 96px 30px;
  gap: 8px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 600;
  margin-bottom: 6px;
}
.remove-item {
  background: none;
  border: none;
  color: var(--ink-faint);
  font-size: 1rem;
  cursor: pointer;
  border-radius: 6px;
  width: 28px;
  height: 32px;
  line-height: 1;
}
.remove-item:hover { color: #c0392b; background: #fdeeec; }
.add-item-btn {
  width: 100%;
  margin-top: 6px;
  background: var(--accent-light);
  color: var(--accent-dark);
  border: 1px dashed var(--accent);
  border-radius: 8px;
  padding: 9px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.add-item-btn:hover { background: #e2e2fa; }

.app-actions { display: grid; grid-template-columns: 1fr; gap: 10px; }
.app-actions .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* ---------- Invoice preview ---------- */
.preview-col { position: sticky; top: 80px; }
.preview-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.preview-toolbar span { font-size: 0.85rem; color: var(--ink-faint); }

.invoice-paper {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 40px 44px;
  min-height: 640px;
  font-size: 0.9rem;
  color: #21213a;
}

.inv-top { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.inv-biz-name { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.01em; }
.inv-biz-detail { color: var(--ink-soft); font-size: 0.85rem; white-space: pre-line; }
.inv-label {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-align: right;
}
.inv-meta { text-align: right; font-size: 0.85rem; color: var(--ink-soft); margin-top: 6px; }
.inv-meta strong { color: var(--ink); }

.inv-billto { margin-bottom: 24px; }
.inv-billto .bt-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--ink-faint);
  margin-bottom: 4px;
}
.inv-billto .bt-name { font-weight: 700; font-size: 1rem; }
.inv-billto .bt-detail { color: var(--ink-soft); font-size: 0.85rem; white-space: pre-line; }

.inv-table { width: 100%; border-collapse: collapse; margin-bottom: 18px; }
.inv-table th {
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  text-align: left;
  padding: 9px 12px;
}
.inv-table th.num, .inv-table td.num { text-align: right; }
.inv-table th:first-child { border-radius: 7px 0 0 7px; }
.inv-table th:last-child { border-radius: 0 7px 7px 0; }
.inv-table td { padding: 10px 12px; border-bottom: 1px solid #eef0f6; }
.inv-table tr.empty-note td { color: var(--ink-faint); font-style: italic; text-align: center; padding: 22px; }

.inv-totals { margin-left: auto; width: 62%; max-width: 320px; }
.inv-totals .t-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 12px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.inv-totals .t-row span:last-child { color: var(--ink); font-variant-numeric: tabular-nums; }
.inv-totals .t-row.t-discount span:last-child { color: var(--success); }
.inv-totals .t-grand {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 8px;
  padding: 12px;
  background: var(--accent-light);
  border-radius: 9px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--accent-dark);
}
.inv-totals .t-grand span:last-child { font-variant-numeric: tabular-nums; }

.inv-words {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}
.inv-words strong { color: var(--ink); }

.inv-notes { margin-top: 18px; font-size: 0.82rem; color: var(--ink-soft); white-space: pre-line; }
.inv-notes .n-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--ink-faint);
  margin-bottom: 3px;
}

.inv-footer {
  margin-top: 30px;
  text-align: center;
  font-size: 0.72rem;
  color: #b6b6c9;
  border-top: 1px solid #f0f0f7;
  padding-top: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; gap: 44px; }
  .steps, .features { grid-template-columns: 1fr 1fr; }
  .app-main { grid-template-columns: 1fr; }
  .preview-col { position: static; }
}
@media (max-width: 600px) {
  .steps, .features { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .invoice-paper { padding: 24px 20px; }
  .inv-top { flex-direction: column; }
  .inv-label, .inv-meta { text-align: left; }
  .nav-links { gap: 12px; }
}

/* ============================================================
   PRINT — show ONLY the invoice preview, clean A4
   ============================================================ */
@media print {
  @page { size: A4; margin: 14mm; }

  body { background: #fff; }

  body * { visibility: hidden; }
  .invoice-paper, .invoice-paper * { visibility: visible; }

  .invoice-paper {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    min-height: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
  }

  .demo-ribbon, .nav, .site-footer, .form-col, .preview-toolbar, .app-actions {
    display: none !important;
  }

  .app-main { display: block; padding: 0; max-width: none; }
  .preview-col { position: static; }

  .inv-table th {
    background: var(--accent) !important;
    color: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .inv-totals .t-grand {
    background: var(--accent-light) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}