:root {
    --primary: #485680;
    --bg: #f5f5f7;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html,
  body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: #111827;
  }

  .auth {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
  }

  .auth-layout {
    width: 100%;
    max-width: 420px;
    padding: 1.5rem;
  }

  .auth-card {
    background: #ffffff;
    border-radius: 18px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
    padding: 1.6rem 1.7rem 1.5rem;
    border: 1px solid rgba(15, 23, 42, 0.06);
  }

  .auth-header {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1.2rem;
  }

  .auth-logo {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background-color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
  }

  .auth-title-wrap {
    display: flex;
    flex-direction: column;
  }

  .auth-title {
    margin: 0;
    font-size: 1.2rem;
    letter-spacing: 0.02em;
  }

  .auth-subtitle {
    margin: 0.08rem 0 0;
    font-size: 0.82rem;
    color: #6b7280;
  }

  .auth-form {
    margin-top: 0.4rem;
  }

  .auth-field {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.9rem;
  }

  .auth-field label {
    font-size: 0.84rem;
    font-weight: 500;
    color: #374151;
  }

  .auth-field input {
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.9);
    padding: 0.55rem 0.65rem;
    font-size: 0.9rem;
    outline: none;
    background: #f9fafb;
    transition: border-color 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
  }

  .auth-field input:focus {
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 1px rgba(72, 86, 128, 0.2), 0 0 0 4px rgba(72, 86, 128, 0.12);
  }

  .auth-extra {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 1rem;
  }

  .auth-remember {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: #4b5563;
    cursor: pointer;
  }

  .auth-remember input {
    width: 14px;
    height: 14px;
    accent-color: var(--primary);
  }

  .auth-link {
    font-size: 0.8rem;
    color: var(--primary);
    text-decoration: none;
  }

  .auth-link:hover {
    text-decoration: underline;
  }

  .auth-submit {
    width: 100%;
    border: none;
    border-radius: 999px;
    padding: 0.55rem 1rem;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    background-color: var(--primary);
    color: #ffffff;
    transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.08s ease;
  }

  .auth-submit:hover {
    filter: brightness(1.03);
  }

  .auth-meta {
    margin: 0.7rem 0 0;
    font-size: 0.76rem;
    color: #9ca3af;
    text-align: center;
  }

  @media (max-width: 480px) {
    .auth-card {
      padding: 1.3rem 1.25rem 1.2rem;
      border-radius: 16px;
    }

    .auth-layout {
      padding: 1rem;
    }
  }