:root {
  --bg: #08111f;
  --panel: rgba(10, 20, 37, 0.88);
  --panel-soft: rgba(18, 32, 55, 0.88);
  --line: rgba(132, 166, 219, 0.22);
  --text: #eef4ff;
  --muted: #9cb2d6;
  --primary: #2f6fff;
  --primary-hover: #1c5cf3;
  --danger: #ff8a80;
  --success: #7ee3aa;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, rgba(50, 212, 255, 0.22), transparent 35%),
    radial-gradient(circle at 100% 0%, rgba(47, 111, 255, 0.24), transparent 34%),
    linear-gradient(180deg, #07101c 0%, #0c1729 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 20%, transparent 80%, rgba(255, 255, 255, 0.02)),
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.02) 0,
      rgba(255, 255, 255, 0.02) 1px,
      transparent 1px,
      transparent 26px
    );
  opacity: 0.6;
}

.auth-shell {
  width: min(1120px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 0;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 420px);
  gap: 18px;
  align-items: center;
}

.auth-panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.32);
}

.auth-copy {
  min-height: 520px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.auth-copy::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 212, 255, 0.28), transparent 70%);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8fb2e9;
}

.auth-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.08;
}

.auth-lead {
  max-width: 520px;
  margin: 0;
  color: #d8e5ff;
  font-size: 16px;
  line-height: 1.7;
}

.feature-list {
  display: grid;
  gap: 12px;
}

.feature-card {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid rgba(132, 166, 219, 0.16);
  border-radius: 18px;
  background: var(--panel-soft);
}

.feature-card strong {
  font-size: 15px;
}

.feature-card span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.auth-card {
  padding: 28px;
}

.auth-card h2 {
  margin: 0 0 8px;
  font-size: 28px;
}

.auth-description {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

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

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: #d9e6ff;
}

input,
button {
  width: 100%;
  min-height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font: inherit;
}

input {
  padding: 0 14px;
  color: var(--text);
  background: rgba(7, 16, 28, 0.74);
}

input::placeholder {
  color: #7890b7;
}

input:focus {
  outline: none;
  border-color: rgba(90, 143, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(47, 111, 255, 0.14);
}

button {
  margin-top: 4px;
  background: linear-gradient(90deg, #2f6fff, #1d9bf0);
  color: #ffffff;
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: linear-gradient(90deg, var(--primary-hover), #1687d2);
}

.auth-hint {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.message {
  margin: 14px 0 0;
  min-height: 56px;
  padding: 12px;
  border: 1px dashed rgba(132, 166, 219, 0.24);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.message.error {
  color: var(--danger);
  border-color: rgba(255, 138, 128, 0.4);
  background: rgba(255, 138, 128, 0.08);
}

.message.success {
  color: var(--success);
  border-color: rgba(126, 227, 170, 0.38);
  background: rgba(126, 227, 170, 0.08);
}

.hidden {
  display: none;
}

@media (max-width: 1024px) {
  .auth-shell {
    width: min(900px, calc(100vw - 24px));
    grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
    padding: 20px 0 24px;
  }

  .auth-copy,
  .auth-card {
    padding: 24px;
  }

  .auth-copy {
    min-height: 460px;
  }
}

@media (max-width: 860px) {
  .auth-shell {
    grid-template-columns: 1fr;
    width: min(720px, calc(100vw - 24px));
    padding: 20px 0 28px;
  }

  .auth-copy {
    min-height: auto;
    gap: 24px;
  }
}

@media (max-width: 640px) {
  .auth-shell {
    width: calc(100vw - 20px);
    padding: 14px 0 20px;
    gap: 14px;
  }

  .auth-card {
    order: 0;
    padding: 20px;
  }

  .auth-copy {
    order: 1;
    padding: 20px;
    gap: 18px;
  }

  .auth-panel {
    border-radius: 18px;
  }

  .auth-copy h1 {
    font-size: 30px;
  }

  .auth-lead {
    font-size: 14px;
  }

  .feature-card {
    padding: 14px;
  }

  .message {
    min-height: 72px;
  }

  .feature-list {
    display: none;
  }

  .auth-copy {
    min-height: auto;
  }

  .auth-copy::after {
    display: none;
  }
}