.auth-shell {
    max-width: 460px;
    margin: 48px auto;
}

.auth-card {
    padding: 36px;
}

.auth-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-kicker {
    color: var(--muted-text);
    font-size: 0.92rem;
    margin-bottom: 8px;
}

.auth-title {
    margin: 0;
    color: var(--yaguya-dark);
    font-size: 1.9rem;
    letter-spacing: -0.04em;
}

.auth-error {
    color: #e74c3c;
    font-size: 0.92rem;
    margin-bottom: 15px;
    text-align: center;
    background-color: #fff0ef;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid #ffd3cf;
}

.auth-field {
    margin-bottom: 16px;
}

.auth-field-lg {
    margin-bottom: 24px;
}

.auth-label {
    font-weight: 700;
    display: block;
    margin-bottom: 6px;
}

.auth-footer {
    text-align: center;
    margin-top: 18px;
    font-size: 0.95rem;
    color: #666;
}

.auth-footer a {
    color: var(--yaguya-dark);
    text-decoration: none;
    font-weight: 700;
    margin-left: 5px;
}

.auth-inputs input[type="text"],
.auth-inputs input[type="password"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line-color);
    border-radius: 12px;
    box-sizing: border-box;
    font: inherit;
}

.signup-shell {
    max-width: 620px;
    margin: 40px auto;
}

.signup-card {
    padding: 36px;
}

.signup-grid {
    display: grid;
    gap: 18px;
}

.signup-form input[type="text"],
.signup-form input[type="password"],
.signup-form input[type="email"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line-color);
    border-radius: 12px;
    box-sizing: border-box;
    font: inherit;
}

.inline-check {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: start;
}

.rule-list {
    list-style: none;
    padding: 0;
    margin: 10px 0 0;
    font-size: 0.88rem;
    color: #888;
    display: grid;
    gap: 6px;
}

.signup-feedback {
    font-size: 0.85rem;
    margin-top: 6px;
    min-height: 18px;
}

.agreement-shell {
    max-width: 760px;
}

.agreement-card {
    padding: 36px;
}

.terms-panel {
    display: grid;
    gap: 10px;
}

.terms-title {
    margin: 0;
    color: var(--yaguya-dark);
    font-size: 1.05rem;
}

.terms-box {
    display: grid;
    gap: 10px;
    height: 160px;
    overflow-y: auto;
    scrollbar-gutter: stable;
    padding: 18px;
    border: 1px solid #d9e2ec;
    border-radius: 16px;
    background: linear-gradient(180deg, #fbfdff, #f4f8fc);
    color: #4d5d70;
    line-height: 1.65;
}

.terms-box p {
    margin: 0;
}

.agreement-checklist {
    display: grid;
    gap: 12px;
    padding: 18px;
    border: 1px solid #d9e2ec;
    border-radius: 16px;
    background: #f8fbfe;
}

.agreement-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--text-color);
    cursor: pointer;
}

.agreement-item input {
    width: 18px;
    height: 18px;
    margin: 0;
}

.agreement-error {
    margin: -2px 0 0;
    text-align: left;
}

.agreement-submit {
    width: 100%;
    font-size: 1.05rem;
}

.auth-message-shell {
    max-width: 560px;
    margin: 60px auto;
}

.auth-message-card {
    padding: 40px;
    text-align: center;
}

.auth-message-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.auth-message-body {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #555;
    margin: 0;
}

.auth-message-note {
    margin-top: 26px;
    padding: 16px;
    background-color: #f8fbfe;
    border-radius: 14px;
    font-size: 0.92rem;
    color: var(--muted-text);
    border: 1px solid #dde8f4;
}

@media (max-width: 768px) {
    .agreement-card {
        padding: 24px 18px;
    }

    .terms-box {
        height: 148px;
        padding: 16px;
    }

    .agreement-checklist {
        padding: 16px;
    }

    .inline-check {
        grid-template-columns: 1fr;
    }
}