:root {
  --bg: #f4f4f1;
  --card: #ffffff;
  --text: #111111;
  --muted: #666660;
  --line: #d9d9d3;
  --field: #ffffff;
  --accent: #111111;
  --accent-text: #ffffff;
  --highlight: #ffff99; /* the form's own field colour */
  --error: #c0261d;
  --error-bg: #fdecea;
  --radius: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --card: #1f1f1d;
    --text: #f0f0ea;
    --muted: #a3a39b;
    --line: #3a3a36;
    --field: #262624;
    --accent: #ffff99;
    --accent-text: #111111;
    --error: #ff7b70;
    --error-bg: #3a1d1a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

.site-header { padding: 40px 0 24px; }
.logos { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin: 0 0 36px; }
.logo-iad { width: 200px; height: auto; }
.logo-zhdk { width: 150px; height: auto; }
@media (max-width: 640px) {
  .logo-iad { width: 130px; }
  .logo-zhdk { width: 105px; }
}
@media (prefers-color-scheme: dark) { .logos img { filter: invert(1); } }
.eyebrow { margin: 0 0 4px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
h1 { margin: 0 0 12px; font-size: clamp(28px, 5vw, 40px); line-height: 1.1; letter-spacing: -.01em; }
.lede { margin: 0 0 8px; max-width: 62ch; }
.privacy { margin: 0; font-size: 14px; color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 18px; }
.de { font-weight: 400; color: var(--muted); font-size: .85em; margin-left: 4px; }
.hint { margin: -4px 0 14px; color: var(--muted); font-size: 14px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.span-2 { grid-column: span 2; }
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
}

.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; font-weight: 600; }
.field .de { font-weight: 400; }
.field small { font-weight: 400; color: var(--muted); font-size: 13px; }
.optional { margin-left: 0; font-size: 13px; font-weight: 400; font-style: italic; color: var(--muted); }
.required-note { margin: 0 0 14px; font-size: 14px; color: var(--muted); }
.sub-field { margin-top: 10px; padding-left: 14px; border-left: 3px solid var(--text); }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 6px; }

input, select, textarea {
  font: inherit;
  font-weight: 400;
  font-size: 16px;
  color: var(--text);
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px 12px;
  width: 100%;
  min-width: 0;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible, a:focus-visible {
  outline: 3px solid var(--highlight);
  outline-offset: 1px;
  border-color: var(--text);
}
.upper { text-transform: uppercase; }
.upper::placeholder { text-transform: none; }
/* Optional fields are grey, so the required ones stand out */
.optional-input { background: var(--bg); border-style: dashed; }
.optional-input:focus { background: var(--field); border-style: solid; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: .03em; }

[aria-invalid="true"] { border-color: var(--error); background: var(--error-bg); }
.field-error { color: var(--error); font-size: 13px; font-weight: 500; }

.check { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 16px; font-size: 15px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin-top: 2px; flex: none; }
.slip-upload { max-width: 420px; }

.currency { margin-bottom: 14px; }
.currency legend { font-size: 15px; }
.step-hint { margin: 0; }
.segmented { display: inline-flex; align-self: flex-start; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.segmented label { position: relative; cursor: pointer; }
.segmented input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segmented span { display: block; padding: 9px 26px; font-weight: 600; }
.segmented label + label span { border-left: 1px solid var(--line); }
.segmented input:checked + span { background: var(--accent); color: var(--accent-text); }
.segmented input:focus-visible + span { outline: 3px solid var(--highlight); outline-offset: -3px; }
.currency[aria-invalid="true"] .segmented, .segmented:has([aria-invalid="true"]) { border-color: var(--error); background: var(--error-bg); }
.phone { display: grid; grid-template-columns: minmax(0, 11em) 1fr; gap: 8px; }
select:disabled { opacity: .6; }

.rows { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.row { border: 1px solid var(--line); border-radius: 9px; padding: 12px; }
.row-main {
  display: grid;
  grid-template-columns: 24px 1fr 160px 40px;
  gap: 8px;
  align-items: center;
}
.row .num { color: var(--muted); font-weight: 600; font-variant-numeric: tabular-nums; text-align: center; }
.amount-wrap { position: relative; display: block; min-width: 0; }
.row .amount { text-align: right; font-variant-numeric: tabular-nums; padding-right: 52px; }
.amount-wrap .cur { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font-size: 14px; font-weight: 700; color: var(--muted); pointer-events: none; }
.flash { animation: flash 1s ease-out; }
@keyframes flash { 0% { background: var(--highlight); color: #111; } 100% { background: transparent; } }
.total.flash, .cur.flash { border-radius: 4px; }
.row .remove {
  width: 40px; height: 40px; border-radius: 7px; border: 1px solid var(--line);
  background: transparent; color: var(--muted); font-size: 20px; cursor: pointer;
}
.row .remove:hover:not(:disabled) { color: var(--error); border-color: var(--error); }
.row .remove:disabled { opacity: .35; cursor: default; }
.row-main + .field-error, .row > .field-error { display: block; margin: 6px 0 0 32px; }

.fx { margin: 10px 0 6px 32px; }
.fx-toggle { display: inline-flex; gap: 8px; align-items: center; font-size: 14px; cursor: pointer; }
.fx-toggle input { width: 16px; height: 16px; margin: 0; }
.fx-panel { margin-top: 10px; }
.fx-grid { display: grid; grid-template-columns: 1fr 1.3fr 1fr; gap: 10px; }
.fx-result { margin: 8px 0 0; font-size: 13px; color: var(--muted); }
.fx-result:empty { display: none; }
.fx-result.ok { color: var(--text); font-weight: 600; }
.fx-result.error { color: var(--error); }
.fx-result a { color: inherit; font-weight: 600; }
.amount[readonly] { background: var(--bg); color: var(--text); font-weight: 600; cursor: default; }
.docs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0 0 32px; }
.doc { min-width: 0; }
.doc-label { margin: 0 0 6px; font-size: 15px; font-weight: 700; }
.drop {
  position: relative; display: flex; align-items: center; justify-content: center; text-align: center;
  min-height: 72px; padding: 10px; border: 1.5px dashed var(--line); border-radius: 8px;
  cursor: pointer; font-size: 14px; line-height: 1.35;
}
.drop small { color: var(--muted); font-size: 12px; }
.drop strong { font-size: 13px; font-weight: 600; }
.drop:hover { border-color: var(--text); }
.drop:focus-within { outline: 3px solid var(--highlight); outline-offset: 1px; border-color: var(--text); }
.drop .file { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }
.drop.has-file { display: none; }
.doc.invalid .drop { border-color: var(--error); background: var(--error-bg); }
.doc-info { display: flex; gap: 10px; align-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 8px; }
.thumb { width: 52px; height: 52px; object-fit: cover; border-radius: 5px; flex: none; background: var(--bg); border: 1px solid var(--line); }
.pdf-badge {
  width: 52px; height: 52px; flex: none; display: grid; place-items: center;
  border-radius: 5px; background: var(--bg); font-size: 12px; font-weight: 700; color: var(--muted);
}
.doc-meta { min-width: 0; display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.doc-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.page-pick { font-size: 13px; display: flex; gap: 6px; align-items: center; }
.page-pick select { width: auto; padding: 3px 6px; font-size: 13px; }
.doc-status { margin: 4px 0 0; font-size: 12px; color: var(--muted); }
.doc-status:empty { display: none; }
.doc-status.error { color: var(--error); font-weight: 500; }

.link {
  background: none; border: 0; padding: 0; font: inherit; color: inherit;
  text-decoration: underline; text-underline-offset: 2px; cursor: pointer; align-self: flex-start;
}

@media (max-width: 640px) {
  .row-main { grid-template-columns: 22px 1fr 40px; }
  .row .amount-wrap { grid-column: 2; }
  .row .remove { grid-row: 1; grid-column: 3; }
  .docs { grid-template-columns: 1fr; margin-left: 0; }
  .fx { margin-left: 0; }
  .fx-grid { grid-template-columns: 1fr; }
  .row-main + .field-error, .row > .field-error { margin-left: 0; }
}

.rows-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; gap: 12px; flex-wrap: wrap; }
.total { margin: 0; font-size: 18px; font-variant-numeric: tabular-nums; }
.total .pending { font-size: 14px; font-weight: 400; color: var(--muted); }

.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  border-radius: 8px; padding: 12px 20px; border: 1px solid var(--accent);
}
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { filter: brightness(1.15); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--text); }
.btn-ghost[disabled] { opacity: .45; cursor: not-allowed; }

.actions { display: flex; justify-content: flex-end; align-items: center; gap: 16px; flex-wrap: wrap; margin: 8px 0 24px; }
.status { margin: 0; font-size: 14px; color: var(--muted); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn-small { padding: 9px 14px; font-size: 14px; border-color: var(--text); }
.btn-primary:disabled { opacity: .4; cursor: not-allowed; filter: none; }

.error-summary {
  border: 2px solid var(--error); background: var(--error-bg);
  border-radius: var(--radius); padding: 14px 18px; margin-bottom: 16px;
}
.error-summary h2 { margin: 0 0 6px; font-size: 16px; color: var(--error); }
.error-summary ul { margin: 0; padding-left: 18px; }
.error-summary a { color: var(--text); }

.steps { padding-left: 20px; margin: 0 0 16px; }
.steps li { margin-bottom: 4px; }
.downloads { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.note { font-size: 14px; color: var(--muted); background: var(--bg); border-radius: 8px; padding: 10px 14px; margin: 0 0 16px; }
.note p { margin: 0 0 6px; }
.note p:last-child { margin-bottom: 0; }
.note strong { color: var(--text); }
.note a { color: var(--text); font-weight: 600; }

.result > h2 { font-size: 22px; margin: 32px 0 14px; }
.step h3 { margin: 0 0 8px; font-size: 18px; }
.stepper { list-style: none; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 16px; padding: 0; font-size: 14px; font-weight: 600; color: var(--muted); }
.stepper li { display: flex; align-items: center; gap: 8px; }
.stepper li + li::before { content: ""; width: 32px; height: 2px; background: var(--line); margin-right: 2px; }
.stepper .dot { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--line); font-size: 13px; }
.stepper .current { color: var(--text); }
.stepper .current .dot { border-color: var(--text); background: var(--text); color: var(--card); }
.stepper .done { color: var(--text); }
.stepper .done .dot { border-color: var(--text); }
.next-hint { margin: 10px 0 0; font-size: 14px; font-weight: 600; }
.step > p, .unlocked > p { margin: 0 0 12px; }
.step-tag { margin: 0 0 4px; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
#step-send { border-width: 2px; border-color: var(--text); }
#step-send[data-locked] { border-color: var(--line); border-style: dashed; }
#step-send[data-locked] h3, #step-send[data-locked] .step-tag { opacity: .5; }
#step-send[data-locked] .unlocked { display: none; }
#step-send:not([data-locked]) .locked-msg { display: none; }
.locked-msg { color: var(--muted); font-size: 14px; }
.confirm { margin: 16px 0 0; padding: 12px 14px; background: var(--bg); border-radius: 8px; font-weight: 600; }
.downloads-list { list-style: none; counter-reset: dl; margin: 4px 0 16px; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.downloads-list li { counter-increment: dl; display: grid; grid-template-columns: 28px auto 1fr; gap: 12px; align-items: center; }
.downloads-list li::before { content: counter(dl); display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--text); font-size: 13px; font-weight: 700; }
.downloads-list span { font-size: 14px; color: var(--muted); }
.dl { min-width: 250px; }
.dl.done { background: transparent; color: var(--text); }
.dl.done::before { content: "✓\00a0"; }
.done-msg { margin: 0 0 16px; padding: 14px 16px; border: 2px solid #1f7a3a; border-radius: 8px; background: #e9f6ee; color: #12361f; }
.done-msg p { margin: 0; }
.done-msg .done-title { font-weight: 700; font-size: 17px; margin-bottom: 4px; }
@media (prefers-color-scheme: dark) { .done-msg { background: #14301f; color: #d6f3e0; border-color: #4caf73; } }
@media (max-width: 640px) {
  .downloads-list li { grid-template-columns: 28px 1fr; }
  .downloads-list span { grid-column: 2; }
  .dl { min-width: 0; }
}
.send { margin: 0 0 14px; }
.viewer-links { display: flex; gap: 18px; flex-wrap: wrap; margin: 8px 0 0; font-size: 14px; }
.viewer iframe { width: 100%; height: 80vh; min-height: 480px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.viewer a { color: var(--text); }

.site-footer { padding: 16px 16px 48px; font-size: 13px; color: var(--muted); }
.site-footer a { color: var(--text); }