:root {
  --bg: #0b1220;
  --card: #0f1b33;
  --text: #eaf0ff;
  --muted: rgba(234, 240, 255, 0.72);
  --border: rgba(255,255,255,0.10);
  --accent: #1f5bef;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 30% 10%, rgba(31,91,239,0.25), transparent 60%),
              linear-gradient(180deg, #09101f, #070b14);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 10px; }
.logo-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(31,91,239,0.65);
}
.brand-name { font-weight: 700; letter-spacing: 0.2px; }

.toplink {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.toplink:hover { color: var(--text); }

.container { max-width: 1100px; margin: 0 auto; padding: 18px; }

.hero h1 { margin: 10px 0 6px; font-size: 28px; }
.hero p { margin: 0 0 16px; color: var(--muted); }

.app {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 16px;
}

.panel {
  background: rgba(15,27,51,0.75);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  backdrop-filter: blur(10px);
}

.section { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.section:first-of-type { margin-top: 0; padding-top: 0; border-top: 0; }

h2 { margin: 0 0 8px; font-size: 18px; }
h3 { margin: 0 0 10px; font-size: 14px; color: var(--muted); font-weight: 600; }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 10px; }
input {
  width: 100%;
  margin-top: 6px;
  padding: 10px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(7,11,20,0.65);
  color: var(--text);
  outline: none;
}
input:focus { border-color: rgba(31,91,239,0.6); box-shadow: 0 0 0 3px rgba(31,91,239,0.18); }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.hint { color: var(--muted); font-size: 12px; margin-bottom: 10px; }

.primary {
  width: 100%;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 0;
  background: var(--accent);
  color: white;
  font-weight: 700;
  cursor: pointer;
}
.primary:hover { filter: brightness(1.05); }

/* Preview "paper" */
.paper {
  background: white;
  color: #0b1220;
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  min-height: 520px;
}
.paper-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  padding-bottom: 12px;
}
.p-business { font-weight: 800; font-size: 18px; }
.p-title { font-weight: 900; letter-spacing: 0.8px; }
.p-right { text-align: right; }
.p-muted { color: rgba(11,18,32,0.65); font-size: 12px; }
.p-strong { font-weight: 700; }

.paper-block { padding: 14px 0; }
.p-label { font-size: 11px; letter-spacing: 0.4px; color: rgba(11,18,32,0.55); text-transform: uppercase; margin-bottom: 4px; }

.paper-table { margin-top: 8px; border-top: 1px solid rgba(0,0,0,0.08); }
.t-head, .t-row {
  display: grid;
  grid-template-columns: 1.4fr 0.4fr 0.6fr 0.6fr;
  gap: 8px;
  padding: 10px 0;
}
.t-head { font-size: 11px; color: rgba(11,18,32,0.55); text-transform: uppercase; border-bottom: 1px solid rgba(0,0,0,0.08); }
.t-row { font-size: 13px; }

.paper-totals { margin-top: 10px; padding-top: 10px; border-top: 1px solid rgba(0,0,0,0.08); }
.totals-row { display: flex; justify-content: space-between; margin-top: 8px; font-size: 13px; }
.totals-row.total { font-weight: 900; font-size: 15px; }

.paper-footer {
  margin-top: 18px;
  font-size: 11px;
  color: rgba(11,18,32,0.55);
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-top: 10px;
  text-align: center;
}

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
}