/* AI ROI Calculator for Small Business — AI Tried It
   Dark minimalist theme. Self-contained, no external dependencies,
   system fonts, mobile-first. Works from file:// and http(s). */

:root {
  --ink: #eaeff6;
  --muted: #a3b1c6;
  --faint: #6e7d94;
  --bg: #0a0d12;
  --card: #10151d;
  --accent: #2dd4bf;        /* teal */
  --accent-dark: #5eead4;
  --accent-ink: #04211c;
  --accent-soft: rgba(45, 212, 191, 0.09);
  --warn: #e8b34b;
  --warn-soft: rgba(232, 179, 75, 0.1);
  --border: rgba(235, 242, 252, 0.09);
  --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

::selection { background: var(--accent); color: var(--accent-ink); }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               Helvetica, Arial, sans-serif;
  background:
    radial-gradient(720px 320px at 50% -80px, rgba(45, 212, 191, 0.08), transparent 70%),
    var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px 64px; }

/* ---------- Header ---------- */
.site-head {
  padding: 44px 0 8px;
  text-align: center;
}
.brand {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 10px; letter-spacing: -0.02em; font-weight: 750; }
.sub {
  color: var(--muted);
  font-size: 1.02rem;
  max-width: 620px;
  margin: 0 auto 8px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  margin: 18px 0;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
}
.card h2 {
  font-size: 1.15rem;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.card .hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 14px;
}

/* ---------- Sliders / fields ---------- */
.field { margin: 16px 0; }
.field-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}
.field-head label { font-weight: 600; font-size: 0.98rem; }
.field-head .val {
  font-weight: 700;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.field .desc { color: var(--muted); font-size: 0.85rem; margin: 2px 0 6px; }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 28px;
}

.row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }

.money-field input,
.text-field input {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  color: var(--ink);
  background: var(--bg);
}
.money-field input::placeholder,
.text-field input::placeholder { color: var(--faint); }
.money-field input:focus,
.text-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.2);
}

/* ---------- Advanced assumptions ---------- */
details.advanced {
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-top: 18px;
  background: var(--bg);
}
details.advanced summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent-dark);
}
details.advanced .note {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 8px 0 0;
}

/* ---------- Results ---------- */
.results { border-top: 3px solid var(--accent); }
.headline {
  text-align: center;
  margin: 6px 0 2px;
}
.headline .kicker {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 800;
}
.headline .big {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--accent-dark);
  line-height: 1.15;
  margin: 6px 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
@media (max-width: 560px) { .headline .big { font-size: 2.1rem; } }
.disclaimer {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  max-width: 560px;
  margin: 8px auto 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0 6px;
}
@media (max-width: 560px) { .stats { grid-template-columns: 1fr; } }
.stat {
  background: var(--accent-soft);
  border: 1px solid rgba(45, 212, 191, 0.18);
  border-radius: 12px;
  padding: 12px 14px;
  text-align: center;
}
.stat .n {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}
.stat .l { font-size: 0.82rem; color: var(--muted); margin-top: 2px; }

/* ---------- Breakdown bar ---------- */
.bar {
  display: flex;
  height: 26px;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(235, 242, 252, 0.07);
  margin: 12px 0 10px;
}
.bar span { height: 100%; min-width: 2px; }
.legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 14px;
  font-size: 0.88rem;
  color: var(--muted);
}
@media (max-width: 560px) { .legend { grid-template-columns: 1fr; } }
.legend li { display: flex; align-items: center; gap: 8px; }
.dot { width: 12px; height: 12px; border-radius: 3px; flex: none; }
.legend .pct { margin-left: auto; color: var(--faint); font-variant-numeric: tabular-nums; }
.empty-note { color: var(--muted); font-size: 0.9rem; }

/* ---------- Press one-liner ---------- */
.oneliner {
  display: flex;
  gap: 10px;
  align-items: stretch;
  flex-wrap: wrap;
}
.oneliner blockquote {
  flex: 1 1 100%;
  margin: 0;
  padding: 12px 14px;
  background: var(--bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  font-size: 0.98rem;
  color: var(--muted);
}
.btn {
  appearance: none;
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 0.98rem;
  font-weight: 750;
  cursor: pointer;
  font-family: inherit;
  background: var(--accent);
  color: var(--accent-ink);
  transition: transform .15s ease, background .15s ease;
}
.btn:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn.ghost {
  background: transparent;
  color: var(--accent-dark);
  border: 1px solid rgba(45, 212, 191, 0.4);
}
.btn.ghost:hover { background: var(--accent-soft); }
.copy-ok { color: var(--accent-dark); font-size: 0.9rem; font-weight: 600; }

/* ---------- Methodology ---------- */
.method ol { margin: 8px 0 0; padding-left: 22px; color: var(--muted); }
.method li { margin: 8px 0; font-size: 0.95rem; }
.method code {
  background: rgba(235, 242, 252, 0.07);
  color: #c9d6ea;
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.88em;
}
.method .assumption-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--warn-soft);
  color: var(--warn);
  border-radius: 6px;
  padding: 1px 7px;
  margin-left: 6px;
  vertical-align: 1px;
}

/* ---------- Email capture ---------- */
.capture .privacy {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 10px 0 0;
}
.capture .done {
  background: var(--accent-soft);
  border: 1px solid rgba(45, 212, 191, 0.25);
  border-radius: 10px;
  padding: 14px;
  color: var(--accent-dark);
  font-weight: 600;
}

/* ---------- Embed ---------- */
.embed pre {
  background: #070a0f;
  border: 1px solid var(--border);
  color: #c9d6ea;
  padding: 14px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-all;
}
.embed .notes { font-size: 0.9rem; color: var(--muted); }

/* ---------- Footer ---------- */
.site-foot {
  text-align: center;
  color: var(--faint);
  font-size: 0.85rem;
  margin-top: 28px;
}
.site-foot a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}