:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #08100f;
  color: #f5f7f2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 10%, rgba(63, 178, 130, 0.16), transparent 34rem),
    radial-gradient(circle at 90% 90%, rgba(221, 176, 80, 0.12), transparent 30rem),
    #08100f;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 430px);
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  background: rgba(15, 27, 25, 0.92);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.36);
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: #52c492;
  color: #07100d;
  font-weight: 850;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 28px 0 8px;
  color: #78d7ad;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: clamp(2rem, 7vw, 2.7rem); line-height: 1.06; letter-spacing: -0.045em; }
.supporting { margin: 14px 0 30px; color: #a7b6b1; line-height: 1.55; }
form { display: grid; gap: 10px; }
label { margin-top: 8px; color: #d9e2de; font-size: 0.88rem; font-weight: 650; }

input {
  width: 100%;
  border: 1px solid #334b45;
  border-radius: 12px;
  padding: 13px 14px;
  background: #0a1513;
  color: #fff;
  font: inherit;
  outline: none;
}

input:focus { border-color: #62cf9f; box-shadow: 0 0 0 3px rgba(98, 207, 159, 0.14); }

button {
  margin-top: 10px;
  border: 0;
  border-radius: 12px;
  padding: 14px 18px;
  background: #62cf9f;
  color: #07100d;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:hover { background: #79dcaf; }
button:disabled { cursor: wait; opacity: 0.7; }
.error { min-height: 1.3em; margin: 4px 0 0; color: #ff9b91; font-size: 0.86rem; }

@media (max-width: 520px) {
  .login-card { padding: 30px 24px; border-radius: 20px; }
}