:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-alt: #eef2ff;
  --border: #d9e0f0;
  --text: #142033;
  --muted: #5c6a82;
  --primary: #2947f0;
  --primary-dark: #1f36bb;
  --success: #13795b;
  --error: #b42318;
  --shadow: 0 20px 60px rgba(20, 32, 51, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #eef2ff 0%, var(--bg) 24%, var(--bg) 100%);
  color: var(--text);
}

a { color: inherit; }
.shell { max-width: 1200px; margin: 0 auto; padding: 24px; }
.site-header {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 28px;
  align-items: stretch;
  padding: 56px 0 24px;
}
.eyebrow, .section-label, .small-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
}
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.6rem, 5vw, 4.7rem); line-height: 1.02; margin-bottom: 16px; }
h2 { font-size: clamp(2rem, 3vw, 3rem); line-height: 1.08; margin-bottom: 14px; }
h3 { font-size: 1.1rem; margin-bottom: 10px; }
.lead { color: var(--muted); font-size: 1.15rem; line-height: 1.65; max-width: 48rem; }
.cta-row, .panel-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  background: var(--surface);
}
.button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary { background: rgba(255,255,255,0.7); }
.button-wide { width: 100%; margin-top: 10px; }
.hero-points, .trust-card ul { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.hero-points li, .trust-card li, .check-item {
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(217,224,240,0.9);
  border-radius: 16px;
  padding: 12px 14px;
  color: var(--muted);
}
.hero-card, .panel, .trust-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.hero-card { padding: 24px; display: grid; gap: 14px; }
.hero-stat { padding: 16px; background: var(--surface-alt); border-radius: 18px; }
.hero-stat span { display: block; color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.hero-stat strong { font-size: 1.02rem; }
.section { padding: 28px 0; }
.grid.two-up { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.steps, .benefits, .faq-list, .form-stack { display: grid; gap: 16px; }
.steps { grid-template-columns: repeat(3, 1fr); }
.steps article, .benefits article {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 22px;
}
.steps span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface-alt);
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
}
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 16px; }
.section-head.small { margin-bottom: 12px; }
.demo-grid { display: grid; grid-template-columns: 1fr 0.95fr; gap: 20px; margin-top: 20px; }
.lower-grid { align-items: start; }
.panel { padding: 24px; }
.summary-panel { min-height: 100%; }
.queue-panel { min-height: 540px; }
.timeline-panel { min-height: 540px; }
.code-label, .muted, .microcopy { color: var(--muted); }
.code-inline {
  display: inline-block;
  padding: 10px 12px;
  border-radius: 14px;
  background: #0f172a;
  color: #dbeafe;
  margin-bottom: 14px;
}
textarea, input, select {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 14px;
  font: inherit;
  color: var(--text);
}
textarea { resize: vertical; min-height: 180px; }
.message { min-height: 24px; margin-top: 14px; color: var(--muted); }
.message.success { color: var(--success); }
.message.error { color: var(--error); }
.summary-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.metric-card {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
}
.metric-card span { display: block; color: var(--muted); margin-bottom: 8px; }
.metric-card strong { font-size: 1.8rem; }
.empty-state {
  display: grid;
  place-items: center;
  min-height: 120px;
  background: #fbfcff;
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 18px;
  color: var(--muted);
}
.queue-table { display: grid; gap: 10px; }
.queue-head, .queue-row {
  display: grid;
  grid-template-columns: 1.1fr 1.2fr 0.7fr 0.8fr 0.8fr 0.8fr;
  gap: 10px;
  align-items: center;
}
.queue-head {
  padding: 0 14px;
  color: var(--muted);
  font-size: 0.85rem;
}
.queue-row {
  width: 100%;
  text-align: left;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px;
  cursor: pointer;
}
.queue-row.selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(41, 71, 240, 0.1); }
.status-pill {
  display: inline-flex;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface-alt);
  text-transform: capitalize;
  font-size: 0.82rem;
}
.selected-invoice { border: 1px solid var(--border); border-radius: 18px; padding: 18px; margin-bottom: 14px; }
.status-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.status-button {
  border: 1px solid var(--border);
  background: var(--surface-alt);
  border-radius: 999px;
  padding: 10px 12px;
  cursor: pointer;
}
.field { display: grid; gap: 8px; margin-bottom: 12px; }
.preview {
  white-space: pre-wrap;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 18px;
  padding: 16px;
  min-height: 180px;
}
.timeline { display: grid; gap: 12px; }
.timeline-item { border-left: 3px solid var(--primary); padding: 8px 0 8px 14px; }
.timeline-item p { margin-bottom: 6px; }
.timeline-item span { color: var(--muted); font-size: 0.85rem; }
.faq-list details {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 18px;
  background: rgba(255,255,255,0.72);
}
.faq-list summary { cursor: pointer; font-weight: 700; }
.faq-list p { margin-top: 12px; color: var(--muted); }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 36px 0 54px;
  border-top: 1px solid var(--border);
  margin-top: 28px;
}
.site-footer p { color: var(--muted); margin-bottom: 0; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 12px; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.text-link { color: var(--primary); }

@media (max-width: 960px) {
  .site-header, .grid.two-up, .demo-grid, .steps, .site-footer {
    grid-template-columns: 1fr;
    display: grid;
  }
  .queue-head, .queue-row { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 680px) {
  .shell { padding: 18px; }
  .queue-head { display: none; }
  .queue-row {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .summary-cards { grid-template-columns: 1fr; }
  .button, .button-wide { width: 100%; }
}