:root {
  --bg: #0d1219;
  --panel: rgba(13, 20, 31, 0.92);
  --line: rgba(153, 170, 191, 0.18);
  --text: #edf3fc;
  --muted: #95a7c0;
  --cyan: #7ae6d4;
  --cyan-strong: #02c4ac;
  --red: #ff8b7e;
  --shadow: 0 36px 90px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--text);
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(122, 230, 212, 0.2), transparent 24%),
    radial-gradient(circle at bottom right, rgba(255, 178, 91, 0.16), transparent 18%),
    linear-gradient(180deg, #101720 0%, #0b1118 100%);
}

.login-scene {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(122, 230, 212, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 230, 212, 0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 1), transparent 88%);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) 16px max(18px, env(safe-area-inset-bottom));
}

.login-panel {
  width: min(100%, 340px);
  padding: 18px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.login-form {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
}

.field input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(7, 12, 18, 0.88);
  color: var(--text);
  font: inherit;
}

.field input::placeholder {
  color: rgba(149, 167, 192, 0.52);
}

.login-button {
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--cyan), var(--cyan-strong));
  color: #041015;
  font: inherit;
  font-weight: 700;
}

.login-button[disabled] {
  opacity: 0.7;
}

.login-button-hidden {
  display: none;
}

.login-error {
  margin: 10px 0 0;
  color: var(--red);
  line-height: 1.6;
  text-align: center;
}