:root {
  --bg: #14160f;
  --card: #1e2418;
  --field: #14180f;
  --line: #3a4230;
  --text: #f3f6ea;
  --muted: #a3ad96;
  --accent: #c6ef55;
  --ink: #17200a;
  --ok-bg: #243312;
  --warn: #f0c14a;
  --warn-bg: #332a12;
  --bad: #ff8b6a;
  --bad-bg: #331910;
  --pending: #c5d0b4;
  --pending-bg: #262b20;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

main {
  width: min(440px, 100%);
  padding: 36px 32px 32px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
}

.mark {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 8px;
  background:
    linear-gradient(#79c94a, #79c94a) top / 100% 46% no-repeat,
    linear-gradient(#8d5a32, #8d5a32) bottom / 100% 54% no-repeat;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.25);
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.lead {
  margin: 0 0 28px;
  color: var(--muted);
  line-height: 1.5;
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--field);
  color: var(--text);
  font: inherit;
  font-size: 1.05rem;
}

input:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

button {
  width: 100%;
  margin-top: 14px;
  padding: 14px 16px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

#status {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-radius: 12px;
  line-height: 1.45;
}

#status.success {
  background: var(--ok-bg);
  color: var(--accent);
}

#status.already {
  background: var(--warn-bg);
  color: var(--warn);
}

#status.error {
  background: var(--bad-bg);
  color: var(--bad);
}

#status.pending {
  background: var(--pending-bg);
  color: var(--pending);
}