.auth-main {
    width: 100%;
    margin: 0;
    padding: 0;
  }
  .auth-shell {
    position: relative;
    min-height: calc(100svh - 4.5rem);
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.72fr);
    gap: clamp(2rem, 6vw, 6rem);
    align-items: center;
    padding: clamp(2rem, 6vw, 5.75rem);
    overflow: hidden;
  }
  .auth-shell::before,
  .auth-shell::after {
    content: "";
    position: absolute;
    pointer-events: none;
  }
  .auth-shell::before {
    inset: 8% -10% auto 38%;
    height: 38rem;
    background:
      radial-gradient(circle at 50% 50%, rgba(161, 250, 255, 0.18), transparent 32%),
      radial-gradient(circle at 70% 62%, rgba(213, 117, 255, 0.16), transparent 28%);
    filter: blur(22px);
    opacity: 0.92;
  }
  .auth-shell::after {
    inset: 0;
    background:
      linear-gradient(rgba(161, 250, 255, 0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(161, 250, 255, 0.035) 1px, transparent 1px);
    background-size: 34px 34px;
    mask-image: radial-gradient(circle at 64% 44%, #000 0%, transparent 56%);
    opacity: 0.58;
  }
  .auth-copy,
  .auth-panel {
    position: relative;
    z-index: 1;
  }
  .auth-kicker {
    margin: 0 0 1rem;
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.36em;
    text-transform: uppercase;
    color: var(--primary);
  }
  .auth-copy h1 {
    max-width: 48rem;
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(3.2rem, 8vw, 7.25rem);
    line-height: 0.88;
    letter-spacing: -0.07em;
  }
  .auth-copy h1 span {
    color: var(--primary);
  }
  .auth-copy p {
    max-width: 31rem;
    margin: 1.45rem 0 0;
    color: rgba(255, 255, 255, 0.62);
    font-size: clamp(1rem, 1.6vw, 1.22rem);
    line-height: 1.6;
  }
  .auth-wave {
    width: min(100%, 43rem);
    margin-top: 3.2rem;
    opacity: 0.62;
  }
  .auth-panel {
    width: min(100%, 31rem);
    justify-self: end;
    padding: clamp(1.2rem, 3vw, 1.65rem);
    border-radius: 1.5rem;
    background:
      linear-gradient(180deg, rgba(32, 31, 33, 0.9), rgba(13, 13, 14, 0.95)),
      radial-gradient(circle at top right, rgba(161, 250, 255, 0.12), transparent 14rem);
    box-shadow: 0 32px 110px rgba(0, 0, 0, 0.38);
  }
  .auth-panel-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: start;
    margin-bottom: 1.25rem;
  }
  .auth-panel h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.45rem);
    line-height: 0.98;
    letter-spacing: -0.06em;
  }
  .auth-status {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    padding: 0.44rem 0.62rem;
    border-radius: 999px;
    background: rgba(161, 250, 255, 0.08);
    color: var(--primary);
    font-family: var(--font-display);
    font-size: 0.57rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
  }
  .auth-status::before {
    content: "";
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 999px;
    background: currentColor;
    box-shadow: 0 0 16px currentColor;
  }
  .auth-form {
    display: grid;
    gap: 1rem;
  }
  .auth-field {
    display: grid;
    gap: 0.42rem;
  }
  .auth-field label {
    margin: 0;
    font-family: var(--font-display);
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
  }
  .auth-field input {
    min-height: 3.15rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.045);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transition: border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
  }
  .auth-field input:focus {
    outline: none;
    border-color: rgba(161, 250, 255, 0.68);
    background: rgba(161, 250, 255, 0.06);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.05),
      0 0 0 4px rgba(161, 250, 255, 0.08);
  }
  .auth-field input[type="checkbox"] {
    width: 1.15rem;
    min-height: 1.15rem;
    padding: 0;
    accent-color: var(--primary);
  }
  .auth-field:has(input[type="checkbox"]) {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
  }
  .auth-field:has(input[type="checkbox"]) label {
    order: 2;
    letter-spacing: 0.08em;
    text-transform: none;
  }
  .auth-help {
    margin: 0;
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.78rem;
    line-height: 1.45;
  }
  .auth-help ul {
    margin: 0.25rem 0 0;
    padding-left: 1rem;
  }
  .auth-errors {
    display: grid;
    gap: 0.32rem;
    margin: 0;
    padding: 0;
    list-style: none;
    color: #ffb3a8;
    font-size: 0.82rem;
    line-height: 1.35;
  }
  .auth-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 3.3rem;
    margin-top: 0.35rem;
    border-radius: 1rem;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
    color: #041416;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: transform 160ms ease, box-shadow 160ms ease;
  }
  .auth-submit:hover,
  .auth-submit:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 0 34px rgba(161, 250, 255, 0.18);
    outline: none;
  }
  .auth-switch {
    margin: 1.2rem 0 0;
    color: rgba(255, 255, 255, 0.52);
    font-size: 0.92rem;
    line-height: 1.5;
  }
  .auth-switch a {
    color: var(--primary);
    font-weight: 700;
  }
  .auth-panel-note {
    margin: 0 0 1.15rem;
    color: rgba(255, 255, 255, 0.52);
    line-height: 1.55;
  }
  @media (max-width: 980px) {
    .auth-shell {
      grid-template-columns: 1fr;
      gap: 2rem;
      padding: 2rem 1rem 3.5rem;
    }
    .auth-panel {
      justify-self: stretch;
      width: 100%;
    }
    .auth-wave {
      display: none;
    }
  }
  @media (max-width: 640px) {
    .auth-copy h1 {
      font-size: clamp(3rem, 17vw, 4.4rem);
    }
    .auth-panel-header {
      display: grid;
    }
  }