/* ============================================================================
   ROI CALCULATOR — grounded in real QuickPOS pricing and real loss categories
   ============================================================================ */
.roi{background:var(--paper-2);border-top:1px solid var(--paper-line)}
.roigrid{display:grid;grid-template-columns:1fr 1fr;gap:26px;max-width:1000px;margin:0 auto;align-items:start}
.roicard{background:#fff;border:1px solid var(--paper-line);border-radius:18px;padding:26px 28px;box-shadow:var(--shadow-card)}
.roicard h3{font-family:var(--font-display);font-size:19px;font-weight:700;margin:0 0 4px}
.roicard__sub{font-size:13.5px;color:var(--ink-55);margin:0 0 22px}

.roifield{margin-bottom:20px}
.roifield__label{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:9px}
.roifield__val{font-family:var(--font-mono);font-size:14px;color:var(--emerald-deep);font-weight:700}
.roifield__hint{font-size:12px;color:var(--ink-40);font-weight:400;margin-top:2px;display:block}
input[type=range].roirange{width:100%;-webkit-appearance:none;appearance:none;height:6px;border-radius:6px;
  background:linear-gradient(90deg,var(--emerald) var(--fill,30%),var(--paper-line) var(--fill,30%));outline:none;cursor:pointer}
input[type=range].roirange::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;
  background:var(--ink);border:3px solid #fff;box-shadow:0 2px 6px rgba(10,22,38,.3);cursor:pointer}
input[type=range].roirange::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--ink);border:3px solid #fff;cursor:pointer}

.roiplan{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.roiplan__opt{flex:1;min-width:80px;border:1px solid var(--paper-line);border-radius:11px;padding:11px 8px;text-align:center;cursor:pointer;transition:all .13s;background:#fff}
.roiplan__opt.on{border-color:var(--ink);background:var(--ink);color:#fff}
.roiplan__opt b{display:block;font-size:13px}
.roiplan__opt small{font-family:var(--font-mono);font-size:11px;opacity:.8}

/* results side */
.roiresult{background:linear-gradient(155deg,#0f2137,#0a1626);color:#fff;border-radius:18px;padding:28px;position:sticky;top:20px}
.roiresult__k{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#8ea3bd}
.roiresult__big{font-family:var(--font-mono);font-size:clamp(34px,6vw,46px);font-weight:700;line-height:1.05;letter-spacing:-.02em;margin:8px 0 2px;color:#3ddc97}
.roiresult__sub{font-size:13px;color:#9fb0c4;margin-bottom:24px}
.roibreak{border-top:1px solid #1a3050;padding-top:18px}
.roiline{display:flex;justify-content:space-between;align-items:baseline;padding:9px 0;font-size:14px;border-bottom:1px solid #14263d}
.roiline:last-child{border-bottom:0}
.roiline__l{color:#aebfd2}
.roiline__l small{display:block;color:#6b7f96;font-size:11px;margin-top:1px}
.roiline__v{font-family:var(--font-mono);font-weight:700}
.roiline__v.pos{color:#3ddc97}
.roiline__v.neg{color:#ff8a8a}
.roiresult__net{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding-top:18px;border-top:1px solid #1a3050}
.roiresult__net .l{font-size:15px;font-weight:600}
.roiresult__net .v{font-family:var(--font-mono);font-size:22px;font-weight:700;color:#3ddc97}
.roiroicalc{background:rgba(61,220,151,.1);border:1px solid rgba(61,220,151,.25);border-radius:12px;padding:14px 16px;margin-top:20px;text-align:center}
.roiroicalc b{font-family:var(--font-mono);font-size:20px;color:#3ddc97}
.roiroicalc span{display:block;font-size:12px;color:#9fb0c4;margin-top:3px}
.roidisc{font-size:11.5px;color:var(--ink-40);text-align:center;max-width:760px;margin:26px auto 0;line-height:1.5}

@media(max-width:820px){.roigrid{grid-template-columns:1fr}.roiresult{position:static}}