:root {
    color-scheme: light;
    --bg: #f2f4f7;
    --panel: #ffffff;
    --ink: #172033;
    --muted: #677083;
    --line: #d8dee8;
    --accent: #153b68;
    --accent-soft: #e9f0f8;
    --danger: #a52b2b;
    --success: #266343;
    font-family: Arial, Helvetica, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
.page-shell { width: min(1120px, calc(100% - 32px)); margin: 38px auto 70px; }
.hero { margin-bottom: 26px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: 12px; font-weight: 700; color: var(--accent); margin: 0 0 8px; }
h1 { font-size: clamp(30px, 4vw, 46px); margin: 0 0 10px; }
h2 { margin: 0; font-size: 20px; }
.hero > p:last-child { max-width: 820px; color: var(--muted); font-size: 16px; line-height: 1.55; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px; margin-bottom: 18px; box-shadow: 0 10px 30px rgba(25, 39, 65, .05); }
.section-heading, .send-panel { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.section-heading > div, .send-panel > div { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.step { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 999px; background: var(--accent); color: white; font-weight: 700; }
.period-badge { padding: 8px 12px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 13px; font-weight: 700; }
.period-badge.warning { background: #fdeaea; color: var(--danger); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 22px; }
label { display: grid; gap: 7px; font-size: 13px; font-weight: 700; color: #3d4658; }
input, select { width: 100%; border: 1px solid #cbd3df; border-radius: 9px; padding: 11px 12px; font: inherit; background: white; color: var(--ink); outline: none; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(21, 59, 104, .12); }
.muted { color: var(--muted); font-size: 13px; line-height: 1.5; }
.button { border: 0; border-radius: 10px; padding: 11px 16px; font-weight: 700; cursor: pointer; font-size: 14px; }
.button.primary { background: var(--accent); color: #fff; }
.button.secondary { background: var(--accent-soft); color: var(--accent); }
.button:disabled { opacity: .6; cursor: wait; }
.receipt-card { border: 1px solid var(--line); border-radius: 13px; padding: 18px; margin-top: 16px; background: #fbfcfe; }
.receipt-card.scanning { outline: 3px solid rgba(21, 59, 104, .09); }
.receipt-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.receipt-card-head > div { display: grid; gap: 4px; }
.receipt-title { font-size: 16px; }
.scan-status { font-size: 12px; color: var(--muted); }
.remove-receipt { background: none; border: 0; color: var(--danger); cursor: pointer; font-weight: 700; }
.receipt-grid { display: grid; grid-template-columns: 260px 1fr; gap: 18px; }
.upload-box { align-content: center; justify-items: center; min-height: 180px; border: 2px dashed #bac5d3; border-radius: 12px; background: white; padding: 18px; text-align: center; }
.upload-box input { border: 0; padding: 8px 0; }
.upload-box small { color: var(--muted); font-weight: 400; }
.receipt-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.ocr-details { margin-top: 12px; }
.ocr-details summary { cursor: pointer; font-size: 12px; color: var(--muted); }
.ocr-preview { white-space: pre-wrap; max-height: 220px; overflow: auto; background: #101827; color: #dbe7f5; border-radius: 9px; padding: 12px; font-size: 11px; }
.send-panel { align-items: center; }
.send-panel > div { max-width: 670px; }
.send-panel h2 { margin-right: 10px; }
code { background: #edf1f6; padding: 2px 5px; border-radius: 4px; }
.result { max-width: 760px; margin: 60px auto; }
.result .panel { text-align: center; padding: 36px; }
.result .amount-big { font-size: 34px; font-weight: 700; margin: 15px 0; }
.error-box { border-left: 5px solid var(--danger); }
.success-box { border-left: 5px solid var(--success); }
@media (max-width: 760px) {
    .page-shell { width: min(100% - 20px, 1120px); margin-top: 20px; }
    .panel { padding: 18px; }
    .section-heading, .send-panel { align-items: stretch; flex-direction: column; }
    .form-grid, .receipt-fields, .receipt-grid { grid-template-columns: 1fr; }
    .upload-box { min-height: 130px; }
    .button { width: 100%; }
}