:root {
  --bg: #0f2228;
  --bg-soft: #17343c;
  --line: rgba(255, 255, 255, 0.16);
  --text: #f4fbfc;
  --muted: #b4cfd6;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  width: 100%;
  min-height: 100%;
}

body {
  font-family: "Avenir Next", "SF Pro Text", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(165deg, var(--bg), var(--bg-soft));
}

.login-wrap {
  min-height: 100dvh;
  display: grid;
  align-content: center;
  gap: 0.8rem;
  width: min(460px, 100% - 1rem);
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 1rem) 0 calc(env(safe-area-inset-bottom) + 1rem);
}

h1 {
  margin: 0;
  text-align: center;
  font-size: clamp(1.3rem, 5.5vw, 2rem);
}

.login-card {
  display: grid;
  gap: 0.5rem;
  background: rgba(15, 40, 48, 0.92);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 0.75rem;
}

label span {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0.56rem;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  font-size: 1rem;
  padding: 0.52rem;
}

button {
  border: 0;
  border-radius: 0.6rem;
  min-height: 2.5rem;
  background: #7df4d0;
  color: #042319;
  font-size: 1rem;
  font-weight: 800;
}

.message {
  min-height: 1.1rem;
  font-size: 0.85rem;
  color: #ffd5d5;
  margin: 0;
}

.back {
  text-align: center;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  opacity: 0.9;
}