:root {
  color: #12233d;
  background: #eff5f9;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; grid-template-rows: 1fr auto; }
.shell { width: min(100% - 2rem, 36rem); margin: 0 auto; padding: clamp(2rem, 8vw, 5.5rem) 0 3rem; }
.brand { display: flex; align-items: center; gap: .55rem; font-size: 1.15rem; font-weight: 750; letter-spacing: -.02em; margin-bottom: 2.75rem; }
.mark { display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: .55rem; color: white; background: #0c7d8c; font-size: .9rem; }
.divider, .subbrand { color: #66809a; font-weight: 500; }
.card { background: white; border: 1px solid #dbe6ee; border-radius: 1.1rem; padding: clamp(1.5rem, 5vw, 2.6rem); box-shadow: 0 1.25rem 3.5rem rgb(29 65 96 / 8%); }
.eyebrow { margin: 0 0 .75rem; color: #0c7d8c; font-size: .78rem; font-weight: 800; letter-spacing: .1em; }
h1 { margin: 0; font-size: clamp(1.8rem, 6vw, 2.45rem); line-height: 1.1; letter-spacing: -.04em; }
.intro { color: #486077; line-height: 1.6; margin: 1rem 0 1.75rem; }
form { display: grid; gap: .6rem; }
label { margin-top: .55rem; font-weight: 700; font-size: .94rem; }
input { min-height: 3.1rem; border: 1px solid #9fb4c5; border-radius: .5rem; padding: .75rem .85rem; color: #12233d; font: inherit; }
input:focus { outline: 3px solid rgb(12 125 140 / 25%); border-color: #0c7d8c; }
button, .button { display: inline-flex; justify-content: center; align-items: center; min-height: 3.15rem; margin-top: 1.15rem; border: 0; border-radius: .5rem; padding: .75rem 1rem; color: white; background: #0c7d8c; font: inherit; font-weight: 750; text-decoration: none; cursor: pointer; }
button:hover, .button:hover { background: #086574; }
.hint { margin: 1.4rem 0 0; color: #66809a; font-size: .84rem; line-height: 1.45; }
.error { margin: .65rem 0 0; padding: .85rem; border-radius: .45rem; background: #fff3ef; color: #9b3121; line-height: 1.4; }
.result { text-align: center; }
.status { display: grid; place-items: center; width: 4.25rem; height: 4.25rem; border-radius: 50%; margin: .25rem auto 1.2rem; font-size: 2rem; font-weight: 800; }
.available { background: #e0f4eb; color: #12754a; }
.pending { background: #fff4d9; color: #9d6200; }
footer { padding: 1.5rem; text-align: center; color: #66809a; font-size: .85rem; }
@media (max-width: 26rem) { .brand { margin-bottom: 2rem; } }