.mp-auth-shell { display: grid; min-height: 100dvh; grid-template-columns: minmax(320px, .9fr) minmax(440px, 1.1fr); background: var(--mp-bg); }
.mp-auth-intro { position: relative; display: flex; min-height: 100%; flex-direction: column; justify-content: space-between; padding: clamp(28px, 5vw, 72px); overflow: hidden; background: #102344; color: #eaf2ff; }
.mp-auth-intro::after { position: absolute; right: -18%; bottom: -12%; width: 70%; aspect-ratio: 1; border: 1px solid rgba(102,167,255,.42); border-radius: 50%; box-shadow: 0 0 0 46px rgba(102,167,255,.08), 0 0 0 92px rgba(102,167,255,.04); content: ""; }
.mp-auth-brand { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 12px; color: #fff; font-size: 1.12rem; font-weight: 750; }
.mp-auth-brand img { width: 42px; height: 42px; border-radius: 12px; object-fit: contain; }
.mp-auth-copy { position: relative; z-index: 1; max-width: 520px; }
.mp-auth-copy span { color: #83b7ff; font-size: .78rem; font-weight: 800; letter-spacing: .14em; }
.mp-auth-copy h1 { margin: 12px 0 14px; color: #fff; font-size: clamp(2rem, 4.5vw, 3.8rem); }
.mp-auth-copy p { margin: 0; color: #c7d8f1; font-size: 1.05rem; }
.mp-auth-main { display: grid; min-width: 0; padding: 28px; place-items: center; }
.mp-auth-card { width: min(100%, 460px); padding: clamp(22px, 4vw, 38px); border: 1px solid var(--mp-border); border-radius: var(--mp-radius-lg); background: var(--mp-surface); box-shadow: var(--mp-shadow-md); }
.mp-auth-card h2 { margin-bottom: 8px; font-size: 1.55rem; }
.mp-auth-subtitle { margin-bottom: 24px; color: var(--mp-muted); }
.mp-paid-registration-fee { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 4px 16px; align-items: center; margin: -8px 0 22px; padding: 14px 16px; border: 1px solid var(--mp-border); border-left: 3px solid var(--mp-primary); border-radius: var(--mp-radius-sm); background: var(--mp-surface-subtle); }
.mp-paid-registration-fee span { color: var(--mp-muted); font-size: .88rem; }
.mp-paid-registration-fee strong { grid-row: span 2; color: var(--mp-text); font-size: 1.35rem; font-variant-numeric: tabular-nums; }
.mp-paid-registration-fee small { color: var(--mp-muted); }
.mp-auth-form { display: grid; gap: 16px; }
.mp-auth-code-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; align-items: end; }
.mp-auth-captcha { display: grid; grid-template-columns: minmax(0,1fr) 138px; gap: 10px; }
.mp-auth-captcha-button { display: grid; min-height: 48px; padding: 0; place-items: center; overflow: hidden; border: 1px solid var(--mp-border); border-radius: var(--mp-radius-sm); background: var(--mp-surface-subtle); }
.mp-auth-captcha-button img { width: 100%; height: 48px; object-fit: cover; }
.mp-auth-options { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.mp-checkbox { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; }
.mp-checkbox input { width: 18px; min-height: 18px; accent-color: var(--mp-primary); }
.mp-auth-submit { width: 100%; }
.mp-dialog.mp-security-dialog { width: min(460px, 100%); border-radius: 18px; }
.mp-dialog.mp-security-dialog .mp-dialog__header { padding: 22px 24px 12px; }
.mp-dialog.mp-security-dialog .mp-dialog__header h2 { margin: 0; font-size: 1.45rem; letter-spacing: 0; }
.mp-dialog.mp-security-dialog .mp-dialog__body { max-height: none; padding: 0 24px 24px; overflow: visible; }
.mp-dialog.mp-security-dialog .mp-dialog__footer { padding: 14px 24px 22px; }
.mp-dialog.mp-security-dialog .mp-icon-button { border-color: transparent; background: transparent; box-shadow: none; }
.mp-dialog.mp-security-dialog .mp-icon-button:hover { border-color: var(--mp-border); background: var(--mp-surface-subtle); box-shadow: none; transform: none; }
.mp-dialog.mp-security-dialog .mp-dialog__footer .mp-button { min-width: 92px; }
.mp-security-code { width: 100%; max-width: 380px; margin: 0 auto; text-align: center; font-variant-numeric: tabular-nums; letter-spacing: .16em; }
.mp-dialog.mp-paid-registration-dialog { width: min(480px, 100%); }
.mp-paid-registration-content { display: grid; gap: 16px; }
.mp-paid-registration-content > p { margin: 0; color: var(--mp-muted); line-height: 1.7; }
.mp-paid-registration-actions { display: grid; gap: 10px; }
.mp-paid-registration-actions .mp-button { width: 100%; justify-content: center; }
.mp-paid-registration-order { color: var(--mp-muted); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.mp-auth-result { min-height: 22px; margin: 0; color: var(--mp-muted); font-size: .9rem; }
.mp-auth-result[data-state="error"] { color: var(--mp-danger); }
.mp-auth-result[data-state="success"] { color: var(--mp-success); }
.mp-auth-footer-link { margin: 20px 0 0; color: var(--mp-muted); text-align: center; }
.mp-auth-oauth { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 18px; }
.mp-auth-oauth a { min-height: 44px; }
.mp-auth-social-only { padding: 18px; border: 1px solid var(--mp-border); border-radius: var(--mp-radius-sm); background: var(--mp-surface-subtle); color: var(--mp-muted); text-align: center; }
.mp-auth-social-only p { margin: 0; }
.mp-behavior-captcha { display: grid; gap: 8px; }
.mp-behavior-captcha__button { width: 100%; }
.mp-behavior-captcha__host { min-height: 44px; }
.mp-behavior-captcha__status { min-height: 20px; margin: 0; color: var(--mp-muted); font-size: .88rem; }
.mp-behavior-captcha[data-state="error"] .mp-behavior-captcha__status { color: var(--mp-danger); }
.mp-behavior-captcha[data-state="success"] .mp-behavior-captcha__status { color: var(--mp-success); }
.mp-auth-status { text-align: center; }
.mp-auth-status img { width: 60px; height: 60px; margin: 0 auto 18px; }
.mp-auth-spinner { width: 34px; height: 34px; margin: 20px auto 0; border: 3px solid var(--mp-border); border-top-color: var(--mp-primary); border-radius: 50%; animation: mp-auth-spin .8s linear infinite; }
@keyframes mp-auth-spin { to { transform: rotate(360deg); } }

@media (max-width: 767px) {
  .mp-auth-shell { grid-template-columns: 1fr; }
  .mp-auth-intro { min-height: auto; padding: 20px; }
  .mp-auth-copy { display: none; }
  .mp-auth-main { padding: 18px 12px 28px; }
  .mp-auth-card { padding: 22px 18px; }
  .mp-dialog.mp-security-dialog { width: 100%; }
  .mp-dialog.mp-security-dialog .mp-dialog__header { padding: 18px 18px 10px; }
  .mp-dialog.mp-security-dialog .mp-dialog__body { padding: 0 18px 18px; }
  .mp-dialog.mp-security-dialog .mp-dialog__footer { padding: 12px 18px 18px; }
  .mp-security-code { max-width: none; }
  .mp-dialog.mp-paid-registration-dialog { width: 100%; }
  .mp-auth-code-row { grid-template-columns: 1fr; }
  .mp-auth-code-row .mp-button { width: 100%; }
}

@media (max-width: 420px) {
  .mp-auth-captcha { grid-template-columns: 1fr; }
  .mp-auth-captcha-button { width: 100%; }
}