:root {
  --ink: #14181f;
  --muted: #6b7480;
  --line: #e3e7ec;
  --brand: #123c6d;
  --brand-ink: #0b2748;
  --bg: #f4f6f9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.card {
  width: min(520px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: 0 10px 40px -20px rgba(18, 39, 72, .35);
}
header h1 {
  margin: 0;
  font-size: 1.9rem;
  letter-spacing: -.02em;
  color: var(--brand-ink);
}
.sub { margin: .2rem 0 1.6rem; color: var(--muted); }
form { display: grid; gap: 1rem; }
.drop {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 1rem;
  text-align: center;
  border: 1.5px dashed var(--line);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--brand); background: #f7faff; }
.drop input { display: none; }
.drop-text { color: var(--muted); }
.field { display: grid; gap: .35rem; }
.field span { font-size: .85rem; color: var(--muted); }
select {
  padding: .6rem .7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font: inherit;
}
button {
  padding: .8rem 1rem;
  border: 0;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
button:hover { background: var(--brand-ink); }
footer { margin-top: 1.4rem; font-size: .8rem; color: var(--muted); text-align: center; }